[#175] Adopt 1.6.* aio versoins in integration tests

Signed-off-by: Roman Loginov <r.loginov@yadro.com>

.docker/Dockerfile

@@ -1,9 +1,9 @@
-FROM golang:1.19-alpine as basebuilder
+FROM golang:1.22-alpine AS basebuilder
 RUN apk add --update make bash ca-certificates
 
-FROM basebuilder as builder
-ENV GOGC off
-ENV CGO_ENABLED 0
+FROM basebuilder AS builder
+ENV GOGC=off
+ENV CGO_ENABLED=0
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.forgejo/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report to help us improve
 title: ''
-labels: community, triage
+labels: community, triage, bug
 assignees: ''
 
 ---
@@ -18,17 +18,17 @@ assignees: ''
 <!--- If suggesting a change/improvement, explain the difference from current behavior -->
 
 ## Possible Solution
-<!--- Not obligatory, but suggest a fix/reason for the bug, -->
-<!--- or ideas how to implement the addition or change -->
+<!-- Not obligatory
+    If no reason/fix/additions for the bug can be suggested,
+    uncomment the following phrase:
+
+<-- No fix can be suggested by a QA engineer. Further solutions shall be up to developers. -->
 
 ## Steps to Reproduce (for bugs)
 <!--- Provide a link to a live example, or an unambiguous set of steps to -->
 <!--- reproduce this bug. -->
 
 1.
-2.
-3.
-4.
 
 ## Context
 <!--- How has this issue affected you? What are you trying to accomplish? -->

.forgejo/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: community, triage
+assignees: ''
+
+---
+
+## Is your feature request related to a problem? Please describe.
+<!--- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+## Describe the solution you'd like
+<!--- A clear and concise description of what you want to happen. -->
+
+## Describe alternatives you've considered
+<!--- A clear and concise description of any alternative solutions or features you've considered. -->
+
+## Additional context
+<!--- Add any other context or screenshots about the feature request here. -->

.forgejo/workflows/builds.yml

@@ -0,0 +1,27 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  builds:
+    name: Builds
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go_versions: [ '1.22', '1.23' ]
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '${{ matrix.go_versions }}'
+
+      - name: Build binary
+        run: make
+
+      - name: Check dirty suffix
+        run: if [[ $(make version) == *"dirty"* ]]; then echo "Version has dirty suffix" && exit 1; fi

.forgejo/workflows/dco.yml

@@ -0,0 +1,20 @@
+on: [pull_request]
+
+jobs:
+  dco:
+    name: DCO
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+         fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.23'
+
+      - name: Run commit format checker
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
+        with:
+          from: 'origin/${{ github.event.pull_request.base.ref }}'

.forgejo/workflows/tests.yml

@@ -0,0 +1,45 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.23'
+          cache: true
+
+      - name: Install linters
+        run: make lint-install
+
+      - name: Run linters
+        run: make lint
+
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go_versions: [ '1.22', '1.23' ]
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '${{ matrix.go_versions }}'
+
+      - name: Update Go modules
+        run: make dep
+
+      - name: Run tests
+        run: make test

.forgejo/workflows/vulncheck.yml

@@ -0,0 +1,25 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  vulncheck:
+    name: Vulncheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.22'
+
+      - name: Install govulncheck
+        run: go install golang.org/x/vuln/cmd/govulncheck@latest
+
+      - name: Run govulncheck
+        run: govulncheck ./...

.github/CODEOWNERS

@@ -1 +0,0 @@
-*       @alexvanin @KirillovDenis

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: community, triage
-assignees: ''
-
----
-
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**Describe the solution you'd like**
-A clear and concise description of what you want to happen.
-
-**Describe alternatives you've considered**
-A clear and concise description of any alternative solutions or features you've considered.
-
-**Additional context**
-Add any other context or screenshots about the feature request here.

.github/workflows/builds.yml

@@ -1,67 +0,0 @@
-name: Builds
-
-on:
-  pull_request:
-    branches:
-      - master
-      - 'support/*'
-    types: [opened, synchronize]
-    paths-ignore:
-      - '**/*.md'
-
-jobs:
-  build_cli:
-    name: Build CLI
-    runs-on: ubuntu-20.04
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Setup Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.19
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: make dep
-
-      - name: Build CLI
-        run: make
-
-      - name: Check version
-        run: if [[ $(make version) == *"dirty"* ]]; then exit 1; fi
-
-  build_image:
-    needs: build_cli
-    name: Build Docker image
-    runs-on: ubuntu-20.04
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.19
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: make dep
-
-      - name: Build Docker image
-        run: make image

.github/workflows/codeql-analysis.yml

@@ -1,67 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ master, 'support/*' ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ master, 'support/*' ]
-  schedule:
-    - cron: '35 8 * * 1'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ]
-        # Learn more:
-        # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        # queries: ./path/to/local/query, your-org/your-repo/queries@main
-
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 https://git.io/JvXDl
-
-    # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines
-    #    and modify them (or add more) to build your code if your project
-    #    uses a compiled language
-
-    #- run: |
-    #   make bootstrap
-    #   make release
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2

.github/workflows/dco.yml

@@ -1,22 +0,0 @@
-name: DCO check
-
-on:
-  pull_request:
-    branches:
-      - master
-      - 'support/*'
-
-jobs:
-  commits_check_job:
-    runs-on: ubuntu-latest
-    name: Commits Check
-    steps:
-    - name: Get PR Commits
-      id: 'get-pr-commits'
-      uses: tim-actions/get-pr-commits@master
-      with:
-        token: ${{ secrets.GITHUB_TOKEN }}
-    - name: DCO Check
-      uses: tim-actions/dco@master
-      with:
-        commits: ${{ steps.get-pr-commits.outputs.commits }}

.github/workflows/tests.yml

@@ -1,86 +0,0 @@
-name: Tests
-
-on:
-  pull_request:
-    branches:
-      - master
-      - 'support/*'
-    types: [opened, synchronize]
-    paths-ignore:
-      - '**/*.md'
-
-jobs:
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2
-        with:
-          version: latest
-
-  cover:
-    name: Coverage
-    runs-on: ubuntu-20.04
-
-    env:
-      CGO_ENABLED: 1
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: 1.19
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: make dep
-
-      - name: Test and write coverage profile
-        run: make cover
-
-      - name: Upload coverage results to Codecov
-        uses: codecov/codecov-action@v1
-        with:
-          fail_ci_if_error: false
-          path_to_write_report: ./coverage.txt
-          verbose: true
-
-  tests:
-    name: Tests
-    runs-on: ubuntu-20.04
-    strategy:
-      matrix:
-        go_versions: [ '1.18', '1.19' ]
-      fail-fast: false
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: '${{ matrix.go_versions }}'
-
-      - name: Restore Go modules from cache
-        uses: actions/cache@v2
-        with:
-          path: /home/runner/go/pkg/mod
-          key: deps-${{ hashFiles('go.sum') }}
-
-      - name: Update Go modules
-        run: make dep
-
-      - name: Run tests
-        run: make test

.gitlint

@@ -0,0 +1,11 @@
+[general]
+fail-without-commits=True
+regex-style-search=True
+contrib=CC1
+
+[title-match-regex]
+regex=^\[\#[0-9Xx]+\]\s
+
+[ignore-by-title]
+regex=^Release(.*)
+ignore=title-match-regex

.golangci.yml

@@ -4,7 +4,7 @@
 # options for analysis running
 run:
   # timeout for analysis, e.g. 30s, 5m, default is 1m
-  timeout: 5m
+  timeout: 15m
 
   # include test files or not, default is true
   tests: true
@@ -12,7 +12,8 @@ run:
 # output configuration options
 output:
   # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
-  format: tab
+  formats:
+  - format: tab
 
 # all available settings of specific linters
 linters-settings:
@@ -24,6 +25,16 @@ linters-settings:
   govet:
     # report about shadowed variables
     check-shadowing: false
+  custom:
+    truecloudlab-linters:
+      path: bin/external_linters.so
+      original-url: git.frostfs.info/TrueCloudLab/linters.git
+      settings:
+        noliteral:
+          enable: true
+          target-methods: ["Fatal"]
+          disable-packages: ["req", "r"]
+          constants-package: "git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 
 linters:
   enable:
@@ -45,6 +56,7 @@ linters:
     - gofmt
     - whitespace
     - goimports
+    - truecloudlab-linters
   disable-all: true
   fast: false
 

.pre-commit-config.yaml

@@ -0,0 +1,52 @@
+ci:
+  autofix_prs: false
+
+repos:
+  - repo: https://github.com/jorisroovers/gitlint
+    rev:  v0.19.1
+    hooks:
+      - id: gitlint
+        stages: [commit-msg]
+      - id: gitlint-ci
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: check-merge-conflict
+      - id: check-json
+      - id: check-xml
+      - id: check-yaml
+      - id: trailing-whitespace
+        args: [--markdown-linebreak-ext=md]
+      - id: end-of-file-fixer
+        exclude: ".key$"
+
+  - repo: https://github.com/shellcheck-py/shellcheck-py
+    rev: v0.9.0.2
+    hooks:
+      - id: shellcheck
+
+  - repo: local
+    hooks:
+      - id: make-lint-install
+        name: install linters
+        entry: make lint-install
+        language: system
+        pass_filenames: false
+
+      - id: make-lint
+        name: run linters
+        entry: make lint
+        language: system
+        pass_filenames: false
+
+      - id: go-unit-tests
+        name: go unit tests
+        entry: make test
+        pass_filenames: false
+        types: [go]
+        language: system

CHANGELOG.md

@@ -4,284 +4,184 @@ This document outlines major changes between releases.
 
 ## [Unreleased]
 
-### Added
-- Multiple configs support (TrueCloudLab#12)
-
-### Changed
-- Update go version to 1.18 (TrueCloudLab#9)
-- Update neo-go to v0.101.0 (#8)
-- Update viper to v1.15.0 (#8)
-
-## [0.26.0] - 2022-12-28
+## [0.32.0] - Khumbu - 2024-12-20
 
 ### Fixed
-- ENV config example (#236)
+- Getting S3 object with FrostFS Object ID-like key (#166)
+- Ignore delete marked objects in versioned bucket in index page (#181)
 
 ### Added
-- Support the `Date` header on upload (#214)
-- Available routes specification (#216)
-- Mention caching strategy in docs (#215)
-- Add error response on attribute duplicates (#221)
-- Multiple server listeners (#228)
+- Metric of dropped logs by log sampler (#150)
+- Fallback FileName attribute search during FilePath attribute search (#174)
+
+### Changed
+- Updated tree service pool without api-go dependency (#178)
+
+## [0.31.0] - Rongbuk - 2024-11-20
+
+### Fixed
+- Docker warnings during image build (#126)
+- `trace_id` parameter in logs (#148)
+- SIGHUP support for `tracing.enabled` config parameter (#157)
+
+### Added
+- Vulnerability report document (#123) 
+- Root CA configuration for tracing (#139)
+- Log sampling policy configuration (#147)
+- Index page support for buckets and containers (#137, #151)
+- CORS support (#158)
+- Source IP binding configuration for FrostFS requests (#160)
+- Tracing attributes (#164)
+
+### Changed
+- Updated Go version to 1.22 (#132)
 
 ### Removed
-- Deprecated linters (#239)
+- Duplicated NNS Resolver code (#129)
 
-### Updating from v0.25.1
-Make sure your configuration is valid:
-
-If you configure application using environment variables change:
-* `HTTP_GW_LISTEN_ADDRESS` -> `HTTP_GW_SERVER_0_ADDRESS`
-* `HTTP_GW_TLS_CERT_FILE` -> `HTTP_GW_SERVER_0_TLS_CERT_FILE` (and set `HTTP_GW_SERVER_0_TLS_ENABLED=true`)
-* `HTTP_GW_TLS_KEY_FILE` -> `HTTP_GW_SERVER_0_TLS_KEY_FILE` (and set `HTTP_GW_SERVER_0_TLS_ENABLED=true`)
-
-If you configure application using `.yaml` file change:
-* `listen_address` -> `server.0.address`
-* `tls.cert_file` -> `server.0.tls.cert_file` (and set `server.0.tls.enabled: true`)
-* `tls.key_file` -> `server.0.tls.key_file` (and set `server.0.tls.enabled: true`)
-
-## [0.25.1] - 2022-11-30
+## [0.30.3] - 2024-10-18
 
 ### Fixed
-- Download zip archive when `FilePath` is invalid (#222)
-- Only one peer must be healthy to init pool (#233)
+- Get response on S3 multipart object (#142)
 
 ### Added
-- Debian packaging (#223)
-- Timeout for individual operations in streaming RPC (#234)
-
-## [0.25.0] - 2022-10-31
-
-### Added
-- Config reloading on SIGHUP (#200, #208)
-- Stop pool dial on SIGINT (#212)
-- Makefile help (#213)
+- Support percent-encoding for GET queries (#134)
 
 ### Changed
-- Update NeoFS error handling (#206)
-- GitHub actions updates (#205, #209)
-- Unified system attribute format for GET and HEAD (#213)
+- Split `FrostFS` interface into separate read methods (#127)
 
-## [0.24.0] - 2022-09-14
+## [0.30.2] - 2024-09-03
+
+### Added
+- Fuzzing tests (#135)
+
+## [0.30.1] - 2024-08-20
 
 ### Fixed
-- Fix expiration epoch calculation (#198)
-- Fix panic on go1.19 (#188)
+- Error counting in pool component before connection switch (#131)
 
 ### Added
-- Exposure of pool metrics (#179, #194)
+- Log of endpoint address during tree pool errors (#131)
 
-### Changed
-- Help doesn't print empty parameters (#186)
-- Update version calculation (#190, #199)
-- Update neofs-sdk-go (#196)
-- Update go version in CI and docker (#197, #202)
-
-## [0.23.0] - 2022-08-02
-
-### Added
-- New param to configure pool error threshold (#184)
-
-### Changed
-- Pprof and prometheus metrics configuration (#171)
-- Drop GO111MODULES from builds (#182)
-
-### Updating from v0.22.0
-1. To enable pprof use `pprof.enabled` instead of `pprof` in config.
-   To enable prometheus metrics use `prometheus.enabled` instead of `metrics` in config.
-   If you are using the command line flags you can skip this step.
-
-## [0.22.0] - 2022-07-25
-
-### Added
-- Default params documentation (#172)
-- Health metric (#175)
-
-### Changed
-- Version output (#169)
-- Updated SDK Version (#178)
-
-## [0.21.0] - 2022-06-20
+## [0.30.0] - Kangshung - 2024-07-22
 
 ### Fixed
-- Downloading ZIP archive using streaming (#163)
+- Handle query unescape and invalid bearer token errors (#107)
+- Fix HTTP/2 requests (#110)
 
 ### Added
-- New make target to build app in docker (#159)
+- Add new `reconnect_interval` config param (#100)
+- Erasure coding support in placement policy (#114)
+- HTTP Header canonicalizer for well-known headers (#121)
 
 ### Changed
-- Increased buffer size for file uploading (#148)
-- Updated linter version to v1.46.2 (#161)
-- Updated CodeQL version to v2 (#158)
+- Improve test coverage (#112, #117)
+- Bumped vulnerable dependencies (#115)
+- Replace extended ACL examples with policies in README (#118)
 
+### Removed
 
-## [0.20.0] - 2022-04-29
+## [0.29.0] - Zemu - 2024-05-27
 
 ### Fixed
-- Get rid of data race on server shutdown (#145)
-- Improved English in docs and comments (#153)
-- Use `FilePath` to download zip (#150)
+- Fix possibility of panic during SIGHUP (#99)
+- Handle query unescape and invalid bearer token errors (#108)
+- Fix log-level change on SIGHUP (#105)
 
 ### Added
-- Support container name NNS resolving (#142)
+- Support client side object cut (#70)
+  - Add `frostfs.client_cut` config param
+  - Add `frostfs.buffer_max_size_for_put` config param
+  - Add bucket/container caching
+  - Disable homomorphic hash for PUT if it's disabled in container itself
+- Add new `logger.destination` config param with journald support (#89, #104)
+- Add support namespaces (#91)
 
 ### Changed
-- Updated docs (#133, #140)
-- Increased default read/write timeouts (#154) 
-- Updated SDK (#137, #139)
-- Updated go version to 1.17 (#143)
-- Improved error messages (#144)
+- Replace atomics with mutex for reloadable params (#74)
 
-## [0.19.0] - 2022-03-16
-
-### Fixed
-- Uploading object with zero payload (#122)
-- Different headers format in GET and HEAD (#125)
-- Fixed project name in docs (#120)
+## [0.28.1] - 2024-01-24
 
 ### Added
-- Support object attributes with spaces (#123)
+- Tree pool traversal limit (#92)
+
+### Update from 0.28.0
+See new `frostfs.tree_pool_max_attempts` config parameter.
+
+## [0.28.0] - Academy of Sciences - 2023-12-07
+
+### Fixed
+- `grpc` schemas in tree configuration (#62)
+- `GetSubTree` failures (#67)
+- Debian packaging (#69, #90)
+- Get latest version of tree node (#85)
+
+### Added
+- Support dump metrics descriptions (#29)
+- Support impersonate bearer token (#40, #45)
+- Tracing support (#20, #44, #60)
+- Object name resolving with tree service (#30)
+- Metrics for current endpoint status (#77)
+- Soft memory limit with `runtime.soft_memory_limit` (#72)
+- Add selection of the node of the latest version of the object (#85)
 
 ### Changed
-- Updated fasthttp to v1.34.0 (#129)
-- Updated NeoFS SDK to v1.0.0-rc.3 (#126, #132)
-- Refactored content type detecting (#128)
+- Update prometheus to v1.15.0 (#35)
+- Update go version to 1.19 (#50)
+- Finish rebranding (#2)
+- Use gate key to form object owner (#66)
+- Move log messages to constants (#36)
+- Uploader and downloader refactor (#73)
 
+### Removed
+- Drop `tree.service` param (now endpoints from `peers` section are used) (#59)
 
-## [0.18.0] - 2021-12-10
+## [0.27.0] - Karpinsky - 2023-07-12
+
+This is a first FrostFS HTTP Gateway release named after
+[Karpinsky glacier](https://en.wikipedia.org/wiki/Karpinsky_Glacier).
 
 ### Fixed
-- System headers format (#111)
+- Require only one healthy storage server to start (#7)
+- Enable gate metrics (#38)
+- `Too many pings` error (#61)
 
 ### Added
-- Different formats to set object's expiration: in epoch, duration, timestamp, 
-  RFC3339 (#108)
-- Support of nodes priority (#115)
+- Multiple configs support (#12)
 
-### Changed 
-- Updated testcontainers dependency (#100)
+### Changed
+- Repository rebranding (#1)
+- Update neo-go to v0.101.0 (#8)
+- Update viper to v1.15.0 (#8)
+- Update go version to 1.18 (#9)
+- Errors have become more detailed (#18)
+- Update system attribute names (#22)
+- Separate integration tests with build tags (#24)
+- Changed values for `frostfs_http_gw_state_health` metric (#32)
 
-## [0.17.0] - 2021-11-15
+### Updating from neofs-http-gw v0.26.0
 
-Support of bulk file download with zip streams and various bug fixes.
+To set system attributes use updated headers
+(you can use old ones for now, but their support will be dropped in the future releases):
 
-### Fixed
-- Allow canonical `X-Attribute-Neofs-*` headers (#87)
-- Responses with error message now end with `\n` character (#105)
-- Application does not require all neofs endpoints to be healthy at start now
-  (#103)
-- Application now tracks session token errors and recreates tokens in runtime
-  (#95)
+* `X-Attribute-Neofs-*` -> `X-Attribute-System-*`
+* `X-Attribute-NEOFS-*` -> `X-Attribute-SYSTEM-*`
+* `X-Attribute-neofs-*` -> `X-Attribute-system-*`
 
-### Added
-- Integration tests with [all-in-one](https://github.com/nspcc-dev/neofs-aio/)
-  test containers (#85, #94)
-- Bulk download support with zip streams (#92, #96)
-
-## 0.16.1 (28 Jul 2021)
-
-New features:
-* logging requests (#77)
-* HEAD methods for download routes (#76)
-
-Improvements:
-* updated sdk-go dependency (#82)
-
-Bugs fixed:
-* wrong NotFound status was used (#30)
-
-## 0.16.0 (29 Jun 2021)
-
-We update HTTP gateway with NEP-6 wallets support, YAML configuration files
-and small fixes.
-
-New features:
- * YAML configuration file (#71)
-
-Behavior changes:
- * gateway key needs to be stored in a proper NEP-6 wallet now, `-k` option is
-   no longer available, see `-w` and `-a` (#68)
-
-Bugs fixed:
- * downloads were not streamed leading to excessive memory usage (#67)
- * Last-Modified header incorrectly used local time (#75)
-
-## 0.15.2 (22 Jun 2021)
-
-New features:
- * Content-Type returned for object GET requests can now be taken from
-   attributes (overriding autodetection, #65)
-
-Behavior changes:
- * grpc keepalive options can no longer be changed (#60)
-
-Improvements:
- * code refactoring (more reuse between different gateways, moved some code to
-   sdk-go, #47, #46, #51, #62, #63)
- * documentation updates and fixes (#53, #49, #55, #59)
- * updated api-go dependency (#57)
-
-Bugs fixed:
- * `-k` option wasn't accepted for key although it was documented (#50)
-
-## 0.15.1 (24 May 2021)
-
-This important release makes HTTP gateway compatible with NeoFS node version
-0.20.0.
-
-Behavior changes:
- * neofs-api-go was updated to 1.26.1, which contains some incompatible
-   changes in underlying components (#39, #44)
- * `neofs-http-gw` is consistently used now for repository, binary and image
-   names (#43)
-
-Improvements:
- * minor code cleanups based on stricter set of linters (#41)
- * updated README (#42)
-
-## 0.15.0 (30 Apr 2021)
-
-This is the first public release incorporating latest NeoFS protocol support
-and fixing some bugs.
-
-New features:
- * upload support (#14, #13, #29)
- * ephemeral keys (#26)
- * TLS server support (#28)
-
-Behavior changes:
- * node weights can now be specified as simple numbers instead of percentages
-   and gateway will calculate the proportion automatically (#27)
- * attributes are converted now to `X-Attribute-*` headers when retrieving
-   object from gate instead of `X-*` (#29)
-
-Improvements:
- * better Makefile (#16, #24, #33, #34)
- * updated documentation (#16, #29, #35, #36)
- * updated neofs-api-go to v1.25.0 (#17, #20)
- * updated fasthttp to v1.23.0+ (#17, #29)
- * refactoring, eliminating some dependencies (#20, #29)
-
-Bugs fixed:
- * gateway attempted to work with no NeoFS peers configured (#29)
- * some invalid headers could be sent for attributes using non-ASCII or
-   non-printable characters (#29)
 
 ## Older versions
 
-Please refer to [Github
-releases](https://github.com/nspcc-dev/neofs-http-gw/releases/) for older
-releases.
+This project is a fork of [NeoFS HTTP Gateway](https://github.com/nspcc-dev/neofs-http-gw) from version v0.26.0.
+To see CHANGELOG for older versions, refer to https://github.com/nspcc-dev/neofs-http-gw/blob/master/CHANGELOG.md.
 
-[0.17.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.16.1...v0.17.0
-[0.18.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.17.0...v0.18.0
-[0.19.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.18.0...v0.19.0
-[0.20.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.19.0...v0.20.0
-[0.21.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.20.0...v0.21.0
-[0.22.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.21.0...v0.22.0
-[0.23.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.22.0...v0.23.0
-[0.24.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.23.0...v0.24.0
-[0.25.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.24.0...v0.25.0
-[0.25.1]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.25.0...v0.25.1
-[0.26.0]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.25.1...v0.26.0
-[Unreleased]: https://github.com/nspcc-dev/neofs-http-gw/compare/v0.26.0...master
+[0.27.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/72734ab4...v0.27.0
+[0.28.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.27.0...v0.28.0
+[0.28.1]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.28.0...v0.28.1
+[0.29.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.28.1...v0.29.0
+[0.30.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.29.0...v0.30.0
+[0.30.1]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.30.0...v0.30.1
+[0.30.2]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.30.1...v0.30.2
+[0.30.3]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.30.2...v0.30.3
+[0.31.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.30.3...v0.31.0
+[0.32.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.31.0...v0.32.0
+[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.32.0...master

CODEOWNERS

@@ -0,0 +1,3 @@
+.*          @TrueCloudLab/storage-services-developers @TrueCloudLab/storage-services-committers
+.forgejo/.* @potyarkin
+Makefile    @potyarkin

CONTRIBUTING.md

@@ -3,8 +3,8 @@
 First, thank you for contributing! We love and encourage pull requests from
 everyone. Please follow the guidelines:
 
-- Check the open [issues](https://github.com/TrueCloudLab/frostfs-http-gw/issues) and
-  [pull requests](https://github.com/TrueCloudLab/frostfs-http-gw/pulls) for existing
+- Check the open [issues](https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/issues) and
+  [pull requests](https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/pulls) for existing
   discussions.
 
 - Open an issue first, to discuss a new feature or enhancement.
@@ -27,20 +27,20 @@ Start by forking the `frostfs-http-gw` repository, make changes in a branch and
 send a pull request. We encourage pull requests to discuss code changes. Here
 are the steps in details:
 
-### Set up your GitHub Repository
+### Set up your git repository
 Fork [FrostFS HTTP Gateway
-upstream](https://github.com/TrueCloudLab/frostfs-http-gw/fork) source repository
+upstream](https://git.frostfs.info/repo/fork/8) source repository
 to your own personal repository. Copy the URL of your fork (you will need it for
 the `git clone` command below).
 
 ```sh
-$ git clone https://github.com/TrueCloudLab/frostfs-http-gw
+$ git clone https://git.frostfs.info/<username>/frostfs-http-gw.git
 ```
 
 ### Set up git remote as ``upstream``
 ```sh
 $ cd frostfs-http-gw
-$ git remote add upstream https://github.com/TrueCloudLab/frostfs-http-gw
+$ git remote add upstream https://git.frostfs.info/TrueCloudLab/frostfs-http-gw.git
 $ git fetch upstream
 $ git merge upstream/master
 ...
@@ -90,8 +90,8 @@ $ git push origin feature/123-something_awesome
 ```
 
 ### Create a Pull Request
-Pull requests can be created via GitHub. Refer to [this
-document](https://help.github.com/articles/creating-a-pull-request/) for
+Pull requests can be created via Forgejo. Refer to [this
+document](https://docs.codeberg.org/collaborating/pull-requests-and-git-flow/) for
 detailed steps on how to create a pull request. After a Pull Request gets peer
 reviewed and approved, it will be merged.
 

Makefile

@@ -2,36 +2,47 @@
 
 REPO ?= $(shell go list -m)
 VERSION ?= $(shell git describe --tags --match "v*" --dirty --always --abbrev=8 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")
-GO_VERSION ?= 1.19
-LINT_VERSION ?= 1.49.0
+GO_VERSION ?= 1.22
+LINT_VERSION ?= 1.60.3
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.6
 BUILD ?= $(shell date -u --iso=seconds)
 
 HUB_IMAGE ?= truecloudlab/frostfs-http-gw
 HUB_TAG ?= "$(shell echo ${VERSION} | sed 's/^v//')"
 
+METRICS_DUMP_OUT ?= ./metrics-dump.json
+
+OUTPUT_LINT_DIR ?= $(shell pwd)/bin
+LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
+TMP_DIR := .cache
+
 # List of binaries to build. For now just one.
 BINDIR = bin
-DIRS = $(BINDIR)
-BINS = $(BINDIR)/frostfs-http-gw
+CMDS = $(addprefix frostfs-, $(notdir $(wildcard cmd/*)))
+BINS = $(addprefix $(BINDIR)/, $(CMDS))
 
-.PHONY: all $(BINS) $(DIRS) dep docker/ test cover fmt image image-push dirty-image lint docker/lint version clean
+.PHONY: all $(BINS) $(DIRS) dep docker/ test cover fmt image image-push dirty-image lint docker/lint pre-commit unpre-commit version clean
 
 # .deb package versioning
 OS_RELEASE = $(shell lsb_release -cs)
 PKG_VERSION ?= $(shell echo $(VERSION) | sed "s/^v//" | \
 			sed -E "s/(.*)-(g[a-fA-F0-9]{6,8})(.*)/\1\3~\2/" | \
 			sed "s/-/~/")-${OS_RELEASE}
-.PHONY: debpackage debclean	
+.PHONY: debpackage debclean
+
+FUZZ_NGFUZZ_DIR ?= ""
+FUZZ_TIMEOUT ?= 30
+FUZZ_FUNCTIONS ?= "all"
+FUZZ_AUX ?= ""
 
 # Make all binaries
 all: $(BINS)
-
-$(BINS): $(DIRS) dep
+$(BINS):  $(DIRS) dep
 	@echo "⇒ Build $@"
 	CGO_ENABLED=0 \
 	go build -v -trimpath \
 	-ldflags "-X main.Version=$(VERSION)" \
-	-o $@ ./
+	-o $@ ./cmd/$(subst frostfs-,,$(notdir $@))
 
 $(DIRS):
 	@echo "⇒ Ensure dir: $@"
@@ -62,11 +73,45 @@ docker/%:
 test:
 	@go test ./... -cover
 
+# Run integration tests
+.PHONY: integration-test
+integration-test:
+	@go test ./... -cover --tags=integration
+
 # Run tests with race detection and produce coverage output
 cover:
 	@go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
 	@go tool cover -html=coverage.txt -o coverage.html
 
+# Run fuzzing
+CLANG := $(shell which clang-17 2>/dev/null)
+.PHONY: check-clang all
+check-clang:
+ifeq ($(CLANG),)
+	@echo "clang-17 is not installed. Please install it before proceeding - https://apt.llvm.org/llvm.sh "
+	@exit 1
+endif
+
+.PHONY: check-ngfuzz all
+check-ngfuzz:
+	@if [ -z "$(FUZZ_NGFUZZ_DIR)" ]; then \
+		echo "Please set a variable FUZZ_NGFUZZ_DIR to specify path to the ngfuzz"; \
+		exit 1; \
+	fi
+
+.PHONY: install-fuzzing-deps
+install-fuzzing-deps: check-clang check-ngfuzz
+
+.PHONY: fuzz
+fuzz: install-fuzzing-deps  
+	@START_PATH=$$(pwd); \
+	ROOT_PATH=$$(realpath --relative-to=$(FUZZ_NGFUZZ_DIR) $$START_PATH) ; \
+	cd $(FUZZ_NGFUZZ_DIR) && \
+	./ngfuzz -clean && \
+	./ngfuzz -fuzz $(FUZZ_FUNCTIONS) -rootdir $$ROOT_PATH -timeout $(FUZZ_TIMEOUT) $(FUZZ_AUX) && \
+	./ngfuzz -report
+
+
 # Reformat code
 fmt:
 	@echo "⇒ Processing gofmt check"
@@ -79,7 +124,7 @@ image:
 		--build-arg REPO=$(REPO) \
 		--build-arg VERSION=$(VERSION) \
 		--rm \
-		-f Dockerfile \
+		-f .docker/Dockerfile \
 		-t $(HUB_IMAGE):$(HUB_TAG) .
 
 # Push Docker image to the hub
@@ -94,12 +139,26 @@ dirty-image:
 		--build-arg REPO=$(REPO) \
 		--build-arg VERSION=$(VERSION) \
 		--rm \
-		-f Dockerfile.dirty \
+		-f .docker/Dockerfile.dirty \
 		-t $(HUB_IMAGE)-dirty:$(HUB_TAG) .
 
+# Install linters
+ lint-install:
+	@mkdir -p $(TMP_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@git -c advice.detachedHead=false clone --branch v$(TRUECLOUDLAB_LINT_VERSION) https://git.frostfs.info/TrueCloudLab/linters.git $(TMP_DIR)/linters
+	@@make -C $(TMP_DIR)/linters lib CGO_ENABLED=1 OUT_DIR=$(OUTPUT_LINT_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@rmdir $(TMP_DIR) 2>/dev/null || true
+	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
+
 # Run linters
 lint:
-	@golangci-lint --timeout=5m run
+	@if [ ! -d "$(LINT_DIR)" ]; then \
+ 		echo "Run make lint-install"; \
+ 		exit 1; \
+ 	fi
+	$(LINT_DIR)/golangci-lint --timeout=5m run
 
 # Run linters in Docker
 docker/lint:
@@ -109,6 +168,14 @@ docker/lint:
 	--env HOME=/src \
 	golangci/golangci-lint:v$(LINT_VERSION) bash -c 'cd /src/ && make lint'
 
+# Activate pre-commit hooks
+pre-commit:
+	pre-commit install -t pre-commit -t commit-msg
+
+# Deactivate pre-commit hooks
+unpre-commit:
+	pre-commit uninstall -t pre-commit -t commit-msg
+
 # Print version
 version:
 	@echo $(VERSION)
@@ -116,7 +183,7 @@ version:
 # Clean up
 clean:
 	rm -rf vendor
-	rm -rf $(BINDIR)
+	rm -rf $(BINDIR) 
 
 # Package for Debian
 debpackage:
@@ -130,4 +197,10 @@ debpackage:
 debclean:
 	dh clean
 
+# Dump metrics (use METRICS_DUMP_OUT variable to override default out file './metrics-dump.json')
+.PHONY: dump-metrics
+dump-metrics:
+	@go test ./metrics -run TestDescribeAll --tags=dump_metrics --out=$(abspath $(METRICS_DUMP_OUT))
+
+
 include help.mk

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-<img src="./.github/logo.svg" width="500px" alt="FrostFS logo">
+<img src="./.forgejo/logo.svg" width="500px" alt="FrostFS logo">
 </p>
 <p align="center">
   <a href="https://frostfs.info">FrostFS</a> is a decentralized distributed object storage integrated with the <a href="https://neo.org">NEO Blockchain</a>.
@@ -7,6 +7,8 @@
 
 ---
 [![Report](https://goreportcard.com/badge/git.frostfs.info/TrueCloudLab/frostfs-http-gw)](https://goreportcard.com/report/git.frostfs.info/TrueCloudLab/frostfs-http-gw)
+![Release](https://img.shields.io/badge/dynamic/json.svg?label=release&url=https://git.frostfs.info/api/v1/repos/TrueCloudLab/frostfs-http-gw/releases&query=$[0].tag_name&color=orange)
+![License](https://img.shields.io/badge/license-GPL--3.0-orange.svg)
 
 # FrostFS HTTP Gateway
 
@@ -48,8 +50,8 @@ can be done either via `-p` parameter or via `HTTP_GW_PEERS_<N>_ADDRESS` and
 `HTTP_GW_PEERS_<N>_WEIGHT` environment variables (the gate supports multiple
 FrostFS nodes with weighted load balancing).
 
-If you launch HTTP gateway in bundle with [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env), 
-you can get the IP address of the node in the output of `make hosts` command 
+If you launch HTTP gateway in bundle with [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env),
+you can get the IP address of the node in the output of `make hosts` command
 (with s0*.frostfs.devenv name).
 
 These two commands are functionally equivalent, they run the gate with one
@@ -86,12 +88,12 @@ $ HTTP_GW_PEERS_0_ADDRESS=192.168.130.71:8080 HTTP_GW_PEERS_0_WEIGHT=1 HTTP_GW_P
   HTTP_GW_PEERS_2_ADDRESS=192.168.130.73:8080 HTTP_GW_PEERS_2_WEIGHT=1 HTTP_GW_PEERS_2_PRIORITY=2 \
   frostfs-http-gw
 ```
-This command will make gateway use 192.168.130.71 while it is healthy. Otherwise, it will make the gateway use 
+This command will make gateway use 192.168.130.71 while it is healthy. Otherwise, it will make the gateway use
 192.168.130.72 for 90% of requests and 192.168.130.73 for remaining 10%.
 
 ### Keys
-You can provide a wallet via `--wallet` or `-w` flag. You can also specify the account address using `--address` 
-(if no address provided default one will be used). If wallet is used, you need to set `HTTP_GW_WALLET_PASSPHRASE` variable to decrypt the wallet. 
+You can provide a wallet via `--wallet` or `-w` flag. You can also specify the account address using `--address`
+(if no address provided default one will be used). If wallet is used, you need to set `HTTP_GW_WALLET_PASSPHRASE` variable to decrypt the wallet.
 If no wallet provided, the gateway autogenerates a key pair it will use for FrostFS requests.
 ```
 $ frostfs-http-gw -p $FROSTFS_NODE -w $WALLET_PATH --address $ACCOUNT_ADDRESS
@@ -162,7 +164,7 @@ All timing options accept values with suffixes, so "15s" is 15 seconds and
 "2m" is 2 minutes.
 
 ### Zip streaming
-The gateway supports downloading files by common prefix (like dir) in zip format. You can enable compression 
+The gateway supports downloading files by common prefix (like dir) in zip format. You can enable compression
 using config or `HTTP_GW_ZIP_COMPRESSION=true` environment variable.
 
 ### Logging
@@ -172,7 +174,7 @@ HTTP_GW_LOGGER_LEVEL=debug
 ```
 
 ### Yaml file
-Configuration file is optional and can be used instead of environment variables/other parameters. 
+Configuration file is optional and can be used instead of environment variables/other parameters.
 It can be specified with `--config` parameter:
 ```
 $ frostfs-http-gw --config your-config.yaml
@@ -207,7 +209,7 @@ supported.
 
 ### Preparation
 
-Before uploading or downloading a file make sure you have a prepared container. 
+Before uploading or downloading a file make sure you have a prepared container.
 You can create it with instructions below.
 
 Also, in case of downloading, you need to have a file inside a container.
@@ -215,41 +217,8 @@ Also, in case of downloading, you need to have a file inside a container.
 ### NNS
 
 In all download/upload routes you can use container name instead of its id (`$CID`).
+Read more about it in [docs/nns.md](./docs/nns.md).
 
-Steps to start using name resolving:
-
-1. Enable NNS resolving in config (`rpc_endpoint` must be a valid neo rpc node, see [configs](./config) for other examples):
-
-```yaml
-rpc_endpoint: http://morph-chain.frostfs.devenv:30333
-resolve_order:
-  - nns
-```
-
-2. Make sure your container is registered in NNS contract. If you use [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env) 
-you can check if your container (e.g. with `container-name` name) is registered in NNS:
-
-```shell
-$ curl -s --data '{"id":1,"jsonrpc":"2.0","method":"getcontractstate","params":[1]}' \
-    http://morph-chain.frostfs.devenv:30333 | jq -r '.result.hash'
-    
-0x8e6c3cd4b976b28e84a3788f6ea9e2676c15d667
-
-$ docker exec -it morph_chain neo-go \
-    contract testinvokefunction \
-    -r http://morph-chain.frostfs.devenv:30333 0x8e6c3cd4b976b28e84a3788f6ea9e2676c15d667 \
-    resolve string:container-name.container int:16 \
-    | jq -r '.stack[0].value | if type=="array" then .[0].value else . end' \
-    | base64 -d && echo
-    
-7f3vvkw4iTiS5ZZbu5BQXEmJtETWbi3uUjLNaSs29xrL
-```
-
-3. Use container name instead of its `$CID`. For example:
-
-```shell
-$ curl http://localhost:8082/get_by_attribute/container-name/FileName/object-name
-```
 
 #### Create a container
 
@@ -257,7 +226,7 @@ You can create a container via [frostfs-cli](https://git.frostfs.info/TrueCloudL
 ```
 $ frostfs-cli -r $FROSTFS_NODE -w $WALLET container create --policy $POLICY --basic-acl $ACL
 ```
-where `$WALLET` is a path to user wallet,   
+where `$WALLET` is a path to user wallet,  
 `$ACL` -- hex encoded basic ACL value or keywords 'private, 'public-read', 'public-read-write' and  
 `$POLICY` -- QL-encoded or JSON-encoded placement policy or path to file with it
 
@@ -267,17 +236,17 @@ $ frostfs-cli -r 192.168.130.72:8080 -w ./wallet.json container create --policy
 ```
 
 If you have launched nodes via [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env),
-you can get the key value from `wallets/wallet.json` or write the path to 
+you can get the key value from `wallets/wallet.json` or write the path to
 the file `wallets/wallet.key`.
 
 #### Prepare a file in a container
 
 To create a file via [frostfs-cli](https://git.frostfs.info/TrueCloudLab/frostfs-node/releases), run a command below:
 ```
-$ frostfs-cli -r $FROSTFS_NODE -k $KEY object put --file $FILENAME --cid $CID 
+$ frostfs-cli -r $FROSTFS_NODE -k $KEY object put --file $FILENAME --cid $CID
 ```
-where 
-`$KEY` -- the key, please read the information [above](#create-a-container), 
+where
+`$KEY` -- the key, please read the information [above](#create-a-container),
 `$CID` -- container ID.
 
 For example:
@@ -290,13 +259,13 @@ $ frostfs-cli -r 192.168.130.72:8080 -w ./wallet.json object put --file cat.png
 
 #### Requests
 
-The following requests support GET/HEAD methods. 
+The following requests support GET/HEAD methods.
 
 ##### By IDs
 
 Basic downloading involves container ID and object ID and is done via GET
-requests to `/get/$CID/$OID` path, where `$CID` is a container ID or its name if NNS is enabled, 
-`$OID` is an object's (i.e. your file's) ID. 
+requests to `/get/$CID/$OID` path, where `$CID` is a container ID or its name if NNS is enabled,
+`$OID` is an object's (i.e. your file's) ID.
 
 For example:
 
@@ -317,12 +286,12 @@ can be used as well. The generic syntax for it looks like this:
 
 ```/get_by_attribute/$CID/$ATTRIBUTE_NAME/$ATTRIBUTE_VALUE```
 
-where 
-`$CID` is a container ID or its name if NNS is enabled, 
+where
+`$CID` is a container ID or its name if NNS is enabled,
 `$ATTRIBUTE_NAME` is the name of the attribute we want to use,
 `$ATTRIBUTE_VALUE` is the value of this attribute that the target object should have.
 
-**NB!** The attribute key and value should be url encoded, i.e., if you want to download an object with the attribute value 
+**NB!** The attribute key and value should be url encoded, i.e., if you want to download an object with the attribute value
 `a cat`, the value in the request must be `a+cat`. In the same way with the attribute key. If you don't escape such values
 everything can still work (for example you can use `d@ta` without encoding) but it's HIGHLY RECOMMENDED to encode all your attributes.  
 
@@ -346,7 +315,7 @@ Some other user-defined attributes:
 $ wget http://localhost:8082/get_by_attribute/Dxhf4PNprrJHWWTG5RGLdfLkJiSQ3AQqit1MSnEPRkDZ/Ololo/100500
 ```
 
-Or when the attribute includes special symbols: 
+Or when the attribute includes special symbols:
 ```
 $ wget http://localhost:8082/get_by_attribute/Dxhf4PNprrJHWWTG5RGLdfLkJiSQ3AQqit1MSnEPRkDZ/Olo%2Blo/100500 # means Olo+lo
 ```
@@ -365,7 +334,7 @@ You can download some dir (files with the same prefix) in zip (it will be compre
 $ wget http://localhost:8082/zip/Dxhf4PNprrJHWWTG5RGLdfLkJiSQ3AQqit1MSnEPRkDZ/common/prefix
 ```
 
-**Note:** the objects must have a valid `FilePath` attribute (it should not contain trailing `/`), 
+**Note:** the objects must have a valid `FilePath` attribute (it should not contain trailing `/`),
 otherwise they will not be in the zip archive. You can upload file with this attribute using `curl`:
 
 ```
@@ -393,7 +362,7 @@ set of reply headers generated using the following rules:
 
 ##### Caching strategy
 
-HTTP Gateway doesn't control caching (doesn't anything with the `Cache-Control` header). Caching strategy strictly 
+HTTP Gateway doesn't control caching (doesn't anything with the `Cache-Control` header). Caching strategy strictly
 depends on application use case. So it should be carefully done by proxy server.
 
 ### Uploading
@@ -424,12 +393,12 @@ You can also add some attributes to your file using the following rules:
    "X-Attribute-" prefix stripped, that is if you add "X-Attribute-Ololo:
    100500" header to your request the resulting object will get "Ololo:
    100500" attribute
- * "X-Attribute-NEOFS-*" headers are special 
-   (`-NEOFS-` part can also be `-neofs-` or`-Neofs-`), they're used to set internal
-   NeoFS attributes starting with `__NEOFS__` prefix, for these attributes all
+ * "X-Attribute-SYSTEM-*" headers are special
+   (`-SYSTEM-` part can also be `-system-` or`-System-` (and even legacy `-Neofs-` for some next releases)), they're used to set internal
+   FrostFS attributes starting with `__SYSTEM__` prefix, for these attributes all
    dashes get converted to underscores and all letters are capitalized. For
-   example, you can use "X-Attribute-NEOFS-Expiration-Epoch" header to set
-   `__NEOFS__EXPIRATION_EPOCH` attribute
+   example, you can use "X-Attribute-SYSTEM-Expiration-Epoch" header to set
+   `__SYSTEM__EXPIRATION_EPOCH` attribute
  * `FileName` attribute is set from multipart's `filename` if not set
    explicitly via `X-Attribute-FileName` header
  * `Timestamp` attribute can be set using gateway local time if using
@@ -439,13 +408,13 @@ You can also add some attributes to your file using the following rules:
 ---
 **NOTE**
 
-There are some reserved headers type of `X-Attribute-NEOFS-*` (headers are arranged in descending order of priority):
-1. `X-Attribute-Neofs-Expiration-Epoch: 100`
-2. `X-Attribute-Neofs-Expiration-Duration: 24h30m`
-3. `X-Attribute-Neofs-Expiration-Timestamp: 1637574797`
-4. `X-Attribute-Neofs-Expiration-RFC3339: 2021-11-22T09:55:49Z`
+There are some reserved headers type of `X-Attribute-SYSTEM-*` (headers are arranged in descending order of priority):
+1. `X-Attribute-System-Expiration-Epoch: 100`
+2. `X-Attribute-System-Expiration-Duration: 24h30m`
+3. `X-Attribute-System-Expiration-Timestamp: 1637574797`
+4. `X-Attribute-System-Expiration-RFC3339: 2021-11-22T09:55:49Z`
 
-which transforms to `X-Attribute-Neofs-Expiration-Epoch`. So you can provide expiration any convenient way. 
+which transforms to `X-Attribute-System-Expiration-Epoch`. So you can provide expiration any convenient way.
 
 ---
 
@@ -460,149 +429,37 @@ object ID, like this:
 
 #### Authentication
 
-You can always upload files to public containers (open for anyone to put
-objects into), but for restricted containers you need to explicitly allow PUT
-operations for a request signed with your HTTP Gateway keys.
-
-If your don't want to manage gateway's secret keys and adjust eACL rules when
-gateway configuration changes (new gate, key rotation, etc) or you plan to use
-public services, there is an option to let your application backend (or you) to
-issue Bearer Tokens ans pass them from the client via gate down to FrostFS level
-to grant access.
-
-FrostFS Bearer Token basically is a container owner-signed ACL data (refer to FrostFS
-documentation for more details). There are two options to pass them to gateway:
- * "Authorization" header with "Bearer" type and base64-encoded token in
-   credentials field
- * "Bearer" cookie with base64-encoded token contents
-
-For example, you have a mobile application frontend with a backend part storing
-data in FrostFS. When a user authorizes in the mobile app, the backend issues a FrostFS
-Bearer token and provides it to the frontend. Then, the mobile app may generate
-some data and upload it via any available FrostFS HTTP Gateway by adding
-the corresponding header to the upload request. Accessing the ACL protected data
-works the same way.
-
-##### Example
-In order to generate a bearer token, you need to know the container owner key and 
-the address of the sender who will do the request to FrostFS (in our case, it's a gateway wallet address).
-
-Suppose we have:
-* **KxDgvEKzgSBPPfuVfw67oPQBSjidEiqTHURKSDL1R7yGaGYAeYnr** (container owner key)
-* **NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3** (token owner address)
-* **BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K** (container id)
-
-Firstly, we need to encode the container id and the sender address to base64 (now it's base58). 
-So use **base58** and **base64** utils.
-
-1. Encoding container id:
-```
-$ echo 'BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K' | base58 --decode | base64
-# output: mRnZWzewzxjzIPa7Fqlfqdl3TM1KpJ0YnsXsEhafJJg=
-```
-
-2. Encoding token owner id:
-```
-$ echo 'NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3' | base58 --decode | base64
-# output: NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg==
-```
-
-Now, we can form a Bearer token (10000 is liftetime expiration in epoch) and save it to **bearer.json**:
-```
-{
-    "body": {
-        "eaclTable": {
-            "version": {
-                "major": 0,
-                "minor": 0
-            },
-            "containerID": {
-                "value": "mRnZWzewzxjzIPa7Fqlfqdl3TM1KpJ0YnsXsEhafJJg="
-            },
-            "records": []
-        },
-        "ownerID": {
-            "value": "NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg=="
-        },
-        "lifetime": {
-            "exp": "10000",
-            "nbf": "0",
-            "iat": "0"
-        }
-    },
-    "signature": null
-}
-```
-
-Next, sign it with the container owner key:
-```
-$ frostfs-cli util sign bearer-token --from bearer.json --to signed.json -w ./wallet.json
-```
-Encoding to base64 to use via the header:
-```
-$ base64 -w 0 signed.json 
-# output: Ck4KKgoECAIQBhIiCiCZGdlbN7DPGPMg9rsWqV+p2XdMzUqknRiexewSFp8kmBIbChk17MUri6OJ0X5ftsHzy7NERDNFB4C92PcaGgMIkE4SZgohAxpsb7vfAso1F0X6hrm6WpRS14WsT3/Ct1SMoqRsT89KEkEEGxKi8GjKSf52YqhppgaOTQHbUsL3jn7SHLqS3ndAQ7NtAATnmRHleZw2V2xRRSRBQdjDC05KK83LhdSax72Fsw==
-```
-
-After that, the Bearer token can be used:
-
-```
-$ curl -F 'file=@cat.jpeg;filename=cat.jpeg' -H "Authorization: Bearer Ck4KKgoECAIQBhIiCiCZGdlbN7DPGPMg9rsWqV+p2XdMzUqknRiexewSFp8kmBIbChk17MUri6OJ0X5ftsHzy7NERDNFB4C92PcaGgMIkE4SZgohAxpsb7vfAso1F0X6hrm6WpRS14WsT3/Ct1SMoqRsT89KEkEEGxKi8GjKSf52YqhppgaOTQHbUsL3jn7SHLqS3ndAQ7NtAATnmRHleZw2V2xRRSRBQdjDC05KK83LhdSax72Fsw==" \
-  http://localhost:8082/upload/BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K
-# output:
-# {
-#	"object_id": "DhfES9nVrFksxGDD2jQLunGADfrXExxNwqXbDafyBn9X",
-#	"container_id": "BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K"
-# }
-```
-
-##### Note
-For the token to work correctly, you need to create a container with a basic ACL that:
-1. Allow PUT operation to others
-2. Doesn't set "final" bit
-
-For example:
-```
-$ frostfs-cli -w ./wallet.json --basic-acl 0x0FFFCFFF -r 192.168.130.72:8080 container create --policy "REP 3"  --await
-```
-
-To deny access to a container without a token, set the eACL rules:
-```
-$ frostfs-cli -w ./wallet.json -r 192.168.130.72:8080 container set-eacl --table eacl.json --await --cid BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K
-```
-
-File **eacl.json**:
-```
-{
-    "version": {
-        "major": 0,
-        "minor": 0
-    },
-    "containerID": {
-        "value": "mRnZWzewzxjzIPa7Fqlfqdl3TM1KpJ0YnsXsEhafJJg="
-    },
-    "records": [
-        {
-            "operation": "PUT",
-            "action": "DENY",
-            "filters": [],
-            "targets": [
-                {
-                    "role": "OTHERS",
-                    "keys": []
-                }
-            ]
-        }
-    ]
-}
-```
+Read more about request authentication in [docs/authentication.md](./docs/authemtnication.md)
 
 ### Metrics and Pprof
 
-If enabled, Prometheus metrics are available at `localhost:8084` endpoint 
-and Pprof at `localhost:8083/debug/pprof` by default. Host and port can be configured. 
+If enabled, Prometheus metrics are available at `localhost:8084` endpoint
+and Pprof at `localhost:8083/debug/pprof` by default. Host and port can be configured.
 See [configuration](./docs/gate-configuration.md).
 
 ## Credits
 
 Please see [CREDITS](CREDITS.md) for details.
+
+## Fuzzing
+
+To run fuzzing tests use the following command:
+
+```shell
+$ make fuzz
+```
+
+This command will install dependencies for the fuzzing process and run existing fuzzing tests.
+
+You can also use the following arguments:
+
+```
+FUZZ_TIMEOUT - time to run each fuzzing test (default 30) 
+FUZZ_FUNCTIONS - fuzzing tests that will be started (default "all")
+FUZZ_AUX - additional parameters for the fuzzer (for example, "-debug")
+FUZZ_NGFUZZ_DIR - path to ngfuzz tool
+````
+
+## Credits
+
+Please see [CREDITS](CREDITS.md) for details.

SECURITY.md

@@ -0,0 +1,26 @@
+# Security Policy
+
+
+## How To Report a Vulnerability
+
+If you think you have found a vulnerability in this repository, please report it to us through coordinated disclosure.
+
+**Please do not report security vulnerabilities through public issues, discussions, or change requests.**
+
+Instead, you can report it using one of the following ways:
+
+* Contact the [TrueCloudLab Security Team](mailto:security@frostfs.info) via email
+
+Please include as much of the information listed below as you can to help us better understand and resolve the issue:
+
+* The type of issue (e.g., buffer overflow, or cross-site scripting)
+* Affected version(s)
+* Impact of the issue, including how an attacker might exploit the issue
+* Step-by-step instructions to reproduce the issue
+* The location of the affected source code (tag/branch/commit or direct URL)
+* Full paths of source file(s) related to the manifestation of the issue
+* Any special configuration required to reproduce the issue
+* Any log files that are related to this issue (if possible)
+* Proof-of-concept or exploit code (if possible)
+
+This information will help us triage your report more quickly.

VERSION

@@ -1 +1 @@
-v0.26.0
+v0.32.0

app.go

@@ -1,542 +0,0 @@
-package main
-
-import (
-	"context"
-	"crypto/ecdsa"
-	"fmt"
-	"net/http"
-	"os"
-	"os/signal"
-	"strconv"
-	"sync"
-	"syscall"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/downloader"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/metrics"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/uploader"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
-	"github.com/fasthttp/router"
-	"github.com/nspcc-dev/neo-go/cli/flags"
-	"github.com/nspcc-dev/neo-go/cli/input"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/wallet"
-	"github.com/spf13/viper"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-)
-
-type (
-	app struct {
-		log       *zap.Logger
-		logLevel  zap.AtomicLevel
-		pool      *pool.Pool
-		owner     *user.ID
-		cfg       *viper.Viper
-		webServer *fasthttp.Server
-		webDone   chan struct{}
-		resolver  *resolver.ContainerResolver
-		metrics   *gateMetrics
-		services  []*metrics.Service
-		settings  *appSettings
-		servers   []Server
-	}
-
-	appSettings struct {
-		Uploader   *uploader.Settings
-		Downloader *downloader.Settings
-	}
-
-	// App is an interface for the main gateway function.
-	App interface {
-		Wait()
-		Serve(context.Context)
-	}
-
-	// Option is an application option.
-	Option func(a *app)
-
-	gateMetrics struct {
-		logger   *zap.Logger
-		provider GateMetricsProvider
-		mu       sync.RWMutex
-		enabled  bool
-	}
-
-	GateMetricsProvider interface {
-		SetHealth(int32)
-		Unregister()
-	}
-)
-
-// WithLogger returns Option to set a specific logger.
-func WithLogger(l *zap.Logger, lvl zap.AtomicLevel) Option {
-	return func(a *app) {
-		if l == nil {
-			return
-		}
-		a.log = l
-		a.logLevel = lvl
-	}
-}
-
-// WithConfig returns Option to use specific Viper configuration.
-func WithConfig(c *viper.Viper) Option {
-	return func(a *app) {
-		if c == nil {
-			return
-		}
-		a.cfg = c
-	}
-}
-
-func newApp(ctx context.Context, opt ...Option) App {
-	var (
-		key *ecdsa.PrivateKey
-		err error
-	)
-
-	a := &app{
-		log:       zap.L(),
-		cfg:       viper.GetViper(),
-		webServer: new(fasthttp.Server),
-		webDone:   make(chan struct{}),
-	}
-	for i := range opt {
-		opt[i](a)
-	}
-
-	// -- setup FastHTTP server --
-	a.webServer.Name = "frost-http-gw"
-	a.webServer.ReadBufferSize = a.cfg.GetInt(cfgWebReadBufferSize)
-	a.webServer.WriteBufferSize = a.cfg.GetInt(cfgWebWriteBufferSize)
-	a.webServer.ReadTimeout = a.cfg.GetDuration(cfgWebReadTimeout)
-	a.webServer.WriteTimeout = a.cfg.GetDuration(cfgWebWriteTimeout)
-	a.webServer.DisableHeaderNamesNormalizing = true
-	a.webServer.NoDefaultServerHeader = true
-	a.webServer.NoDefaultContentType = true
-	a.webServer.MaxRequestBodySize = a.cfg.GetInt(cfgWebMaxRequestBodySize)
-	a.webServer.DisablePreParseMultipartForm = true
-	a.webServer.StreamRequestBody = a.cfg.GetBool(cfgWebStreamRequestBody)
-	// -- -- -- -- -- -- -- -- -- -- -- -- -- --
-	key, err = getFrostFSKey(a)
-	if err != nil {
-		a.log.Fatal("failed to get frostfs credentials", zap.Error(err))
-	}
-
-	var owner user.ID
-	user.IDFromKey(&owner, key.PublicKey)
-	a.owner = &owner
-
-	var prm pool.InitParameters
-	prm.SetKey(key)
-	prm.SetNodeDialTimeout(a.cfg.GetDuration(cfgConTimeout))
-	prm.SetNodeStreamTimeout(a.cfg.GetDuration(cfgStreamTimeout))
-	prm.SetHealthcheckTimeout(a.cfg.GetDuration(cfgReqTimeout))
-	prm.SetClientRebalanceInterval(a.cfg.GetDuration(cfgRebalance))
-	prm.SetErrorThreshold(a.cfg.GetUint32(cfgPoolErrorThreshold))
-
-	for i := 0; ; i++ {
-		address := a.cfg.GetString(cfgPeers + "." + strconv.Itoa(i) + ".address")
-		weight := a.cfg.GetFloat64(cfgPeers + "." + strconv.Itoa(i) + ".weight")
-		priority := a.cfg.GetInt(cfgPeers + "." + strconv.Itoa(i) + ".priority")
-		if address == "" {
-			break
-		}
-		if weight <= 0 { // unspecified or wrong
-			weight = 1
-		}
-		if priority <= 0 { // unspecified or wrong
-			priority = 1
-		}
-		prm.AddNode(pool.NewNodeParam(priority, address, weight))
-		a.log.Info("add connection", zap.String("address", address),
-			zap.Float64("weight", weight), zap.Int("priority", priority))
-	}
-
-	a.pool, err = pool.NewPool(prm)
-	if err != nil {
-		a.log.Fatal("failed to create connection pool", zap.Error(err))
-	}
-
-	err = a.pool.Dial(ctx)
-	if err != nil {
-		a.log.Fatal("failed to dial pool", zap.Error(err))
-	}
-
-	a.initAppSettings()
-	a.initResolver()
-	a.initMetrics()
-
-	return a
-}
-
-func (a *app) initAppSettings() {
-	a.settings = &appSettings{
-		Uploader:   &uploader.Settings{},
-		Downloader: &downloader.Settings{},
-	}
-
-	a.updateSettings()
-}
-
-func (a *app) initResolver() {
-	var err error
-	a.resolver, err = resolver.NewContainerResolver(a.getResolverConfig())
-	if err != nil {
-		a.log.Fatal("failed to create resolver", zap.Error(err))
-	}
-}
-
-func (a *app) getResolverConfig() ([]string, *resolver.Config) {
-	resolveCfg := &resolver.Config{
-		FrostFS:    resolver.NewFrostFSResolver(a.pool),
-		RPCAddress: a.cfg.GetString(cfgRPCEndpoint),
-	}
-
-	order := a.cfg.GetStringSlice(cfgResolveOrder)
-	if resolveCfg.RPCAddress == "" {
-		order = remove(order, resolver.NNSResolver)
-		a.log.Warn(fmt.Sprintf("resolver '%s' won't be used since '%s' isn't provided", resolver.NNSResolver, cfgRPCEndpoint))
-	}
-
-	if len(order) == 0 {
-		a.log.Info("container resolver will be disabled because of resolvers 'resolver_order' is empty")
-	}
-
-	return order, resolveCfg
-}
-
-func (a *app) initMetrics() {
-	gateMetricsProvider := metrics.NewGateMetrics(a.pool)
-	a.metrics = newGateMetrics(a.log, gateMetricsProvider, a.cfg.GetBool(cfgPrometheusEnabled))
-}
-
-func newGateMetrics(logger *zap.Logger, provider GateMetricsProvider, enabled bool) *gateMetrics {
-	if !enabled {
-		logger.Warn("metrics are disabled")
-	}
-	return &gateMetrics{
-		logger:   logger,
-		provider: provider,
-	}
-}
-
-func (m *gateMetrics) SetEnabled(enabled bool) {
-	if !enabled {
-		m.logger.Warn("metrics are disabled")
-	}
-
-	m.mu.Lock()
-	m.enabled = enabled
-	m.mu.Unlock()
-}
-
-func (m *gateMetrics) SetHealth(status int32) {
-	m.mu.RLock()
-	if !m.enabled {
-		m.mu.RUnlock()
-		return
-	}
-	m.mu.RUnlock()
-
-	m.provider.SetHealth(status)
-}
-
-func (m *gateMetrics) Shutdown() {
-	m.mu.Lock()
-	if m.enabled {
-		m.provider.SetHealth(0)
-		m.enabled = false
-	}
-	m.provider.Unregister()
-	m.mu.Unlock()
-}
-
-func remove(list []string, element string) []string {
-	for i, item := range list {
-		if item == element {
-			return append(list[:i], list[i+1:]...)
-		}
-	}
-	return list
-}
-
-func getFrostFSKey(a *app) (*ecdsa.PrivateKey, error) {
-	walletPath := a.cfg.GetString(cfgWalletPath)
-
-	if len(walletPath) == 0 {
-		a.log.Info("no wallet path specified, creating ephemeral key automatically for this run")
-		key, err := keys.NewPrivateKey()
-		if err != nil {
-			return nil, err
-		}
-		return &key.PrivateKey, nil
-	}
-	w, err := wallet.NewWalletFromFile(walletPath)
-	if err != nil {
-		return nil, err
-	}
-
-	var password *string
-	if a.cfg.IsSet(cfgWalletPassphrase) {
-		pwd := a.cfg.GetString(cfgWalletPassphrase)
-		password = &pwd
-	}
-
-	address := a.cfg.GetString(cfgWalletAddress)
-
-	return getKeyFromWallet(w, address, password)
-}
-
-func getKeyFromWallet(w *wallet.Wallet, addrStr string, password *string) (*ecdsa.PrivateKey, error) {
-	var addr util.Uint160
-	var err error
-
-	if addrStr == "" {
-		addr = w.GetChangeAddress()
-	} else {
-		addr, err = flags.ParseAddress(addrStr)
-		if err != nil {
-			return nil, fmt.Errorf("invalid address")
-		}
-	}
-
-	acc := w.GetAccount(addr)
-	if acc == nil {
-		return nil, fmt.Errorf("couldn't find wallet account for %s", addrStr)
-	}
-
-	if password == nil {
-		pwd, err := input.ReadPassword("Enter password > ")
-		if err != nil {
-			return nil, fmt.Errorf("couldn't read password")
-		}
-		password = &pwd
-	}
-
-	if err := acc.Decrypt(*password, w.Scrypt); err != nil {
-		return nil, fmt.Errorf("couldn't decrypt account: %w", err)
-	}
-
-	return &acc.PrivateKey().PrivateKey, nil
-}
-
-func (a *app) Wait() {
-	a.log.Info("starting application", zap.String("app_name", "frostfs-http-gw"), zap.String("version", Version))
-
-	a.setHealthStatus()
-
-	<-a.webDone // wait for web-server to be stopped
-}
-
-func (a *app) setHealthStatus() {
-	a.metrics.SetHealth(1)
-}
-
-func (a *app) Serve(ctx context.Context) {
-	uploadRoutes := uploader.New(ctx, a.AppParams(), a.settings.Uploader)
-	downloadRoutes := downloader.New(ctx, a.AppParams(), a.settings.Downloader)
-
-	// Configure router.
-	a.configureRouter(uploadRoutes, downloadRoutes)
-
-	a.startServices()
-	a.initServers(ctx)
-
-	for i := range a.servers {
-		go func(i int) {
-			a.log.Info("starting server", zap.String("address", a.servers[i].Address()))
-			if err := a.webServer.Serve(a.servers[i].Listener()); err != nil && err != http.ErrServerClosed {
-				a.log.Fatal("listen and serve", zap.Error(err))
-			}
-		}(i)
-	}
-
-	sigs := make(chan os.Signal, 1)
-	signal.Notify(sigs, syscall.SIGHUP)
-
-LOOP:
-	for {
-		select {
-		case <-ctx.Done():
-			break LOOP
-		case <-sigs:
-			a.configReload()
-		}
-	}
-
-	a.log.Info("shutting down web server", zap.Error(a.webServer.Shutdown()))
-
-	a.metrics.Shutdown()
-	a.stopServices()
-
-	close(a.webDone)
-}
-
-func (a *app) configReload() {
-	a.log.Info("SIGHUP config reload started")
-	if !a.cfg.IsSet(cmdConfig) && !a.cfg.IsSet(cmdConfigDir) {
-		a.log.Warn("failed to reload config because it's missed")
-		return
-	}
-	if err := readInConfig(a.cfg); err != nil {
-		a.log.Warn("failed to reload config", zap.Error(err))
-		return
-	}
-
-	if lvl, err := getLogLevel(a.cfg); err != nil {
-		a.log.Warn("log level won't be updated", zap.Error(err))
-	} else {
-		a.logLevel.SetLevel(lvl)
-	}
-
-	if err := a.resolver.UpdateResolvers(a.getResolverConfig()); err != nil {
-		a.log.Warn("failed to update resolvers", zap.Error(err))
-	}
-
-	if err := a.updateServers(); err != nil {
-		a.log.Warn("failed to reload server parameters", zap.Error(err))
-	}
-
-	a.stopServices()
-	a.startServices()
-
-	a.updateSettings()
-
-	a.metrics.SetEnabled(a.cfg.GetBool(cfgPrometheusEnabled))
-	a.setHealthStatus()
-
-	a.log.Info("SIGHUP config reload completed")
-}
-
-func (a *app) updateSettings() {
-	a.settings.Uploader.SetDefaultTimestamp(a.cfg.GetBool(cfgUploaderHeaderEnableDefaultTimestamp))
-	a.settings.Downloader.SetZipCompression(a.cfg.GetBool(cfgZipCompression))
-}
-
-func (a *app) startServices() {
-	pprofConfig := metrics.Config{Enabled: a.cfg.GetBool(cfgPprofEnabled), Address: a.cfg.GetString(cfgPprofAddress)}
-	pprofService := metrics.NewPprofService(a.log, pprofConfig)
-	a.services = append(a.services, pprofService)
-	go pprofService.Start()
-
-	prometheusConfig := metrics.Config{Enabled: a.cfg.GetBool(cfgPrometheusEnabled), Address: a.cfg.GetString(cfgPrometheusAddress)}
-	prometheusService := metrics.NewPrometheusService(a.log, prometheusConfig)
-	a.services = append(a.services, prometheusService)
-	go prometheusService.Start()
-}
-
-func (a *app) stopServices() {
-	ctx, cancel := context.WithTimeout(context.Background(), defaultShutdownTimeout)
-	defer cancel()
-
-	for _, svc := range a.services {
-		svc.ShutDown(ctx)
-	}
-}
-
-func (a *app) configureRouter(uploadRoutes *uploader.Uploader, downloadRoutes *downloader.Downloader) {
-	r := router.New()
-	r.RedirectTrailingSlash = true
-	r.NotFound = func(r *fasthttp.RequestCtx) {
-		response.Error(r, "Not found", fasthttp.StatusNotFound)
-	}
-	r.MethodNotAllowed = func(r *fasthttp.RequestCtx) {
-		response.Error(r, "Method Not Allowed", fasthttp.StatusMethodNotAllowed)
-	}
-	r.POST("/upload/{cid}", a.logger(uploadRoutes.Upload))
-	a.log.Info("added path /upload/{cid}")
-	r.GET("/get/{cid}/{oid}", a.logger(downloadRoutes.DownloadByAddress))
-	r.HEAD("/get/{cid}/{oid}", a.logger(downloadRoutes.HeadByAddress))
-	a.log.Info("added path /get/{cid}/{oid}")
-	r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(downloadRoutes.DownloadByAttribute))
-	r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(downloadRoutes.HeadByAttribute))
-	a.log.Info("added path /get_by_attribute/{cid}/{attr_key}/{attr_val:*}")
-	r.GET("/zip/{cid}/{prefix:*}", a.logger(downloadRoutes.DownloadZipped))
-	a.log.Info("added path /zip/{cid}/{prefix}")
-
-	a.webServer.Handler = r.Handler
-}
-
-func (a *app) logger(h fasthttp.RequestHandler) fasthttp.RequestHandler {
-	return func(ctx *fasthttp.RequestCtx) {
-		a.log.Info("request", zap.String("remote", ctx.RemoteAddr().String()),
-			zap.ByteString("method", ctx.Method()),
-			zap.ByteString("path", ctx.Path()),
-			zap.ByteString("query", ctx.QueryArgs().QueryString()),
-			zap.Uint64("id", ctx.ID()))
-		h(ctx)
-	}
-}
-
-func (a *app) AppParams() *utils.AppParams {
-	return &utils.AppParams{
-		Logger:   a.log,
-		Pool:     a.pool,
-		Owner:    a.owner,
-		Resolver: a.resolver,
-	}
-}
-
-func (a *app) initServers(ctx context.Context) {
-	serversInfo := fetchServers(a.cfg)
-
-	a.servers = make([]Server, 0, len(serversInfo))
-	for _, serverInfo := range serversInfo {
-		fields := []zap.Field{
-			zap.String("address", serverInfo.Address), zap.Bool("tls enabled", serverInfo.TLS.Enabled),
-			zap.String("tls cert", serverInfo.TLS.CertFile), zap.String("tls key", serverInfo.TLS.KeyFile),
-		}
-		srv, err := newServer(ctx, serverInfo)
-		if err != nil {
-			a.log.Warn("failed to add server", append(fields, zap.Error(err))...)
-			continue
-		}
-
-		a.servers = append(a.servers, srv)
-		a.log.Info("add server", fields...)
-	}
-
-	if len(a.servers) == 0 {
-		a.log.Fatal("no healthy servers")
-	}
-}
-
-func (a *app) updateServers() error {
-	serversInfo := fetchServers(a.cfg)
-
-	var found bool
-	for _, serverInfo := range serversInfo {
-		index := a.serverIndex(serverInfo.Address)
-		if index == -1 {
-			continue
-		}
-
-		if serverInfo.TLS.Enabled {
-			if err := a.servers[index].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
-				return fmt.Errorf("failed to update tls certs: %w", err)
-			}
-		}
-		found = true
-	}
-
-	if !found {
-		return fmt.Errorf("invalid servers configuration: no known server found")
-	}
-
-	return nil
-}
-
-func (a *app) serverIndex(address string) int {
-	for i := range a.servers {
-		if a.servers[i].Address() == address {
-			return i
-		}
-	}
-	return -1
-}

cmd/http-gw/integration_test.go

@@ -1,27 +1,36 @@
+//go:build integration
+
 package main
 
 import (
 	"archive/zip"
 	"bytes"
 	"context"
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
 	"mime/multipart"
 	"net/http"
+	"os"
 	"sort"
+	"strings"
 	"testing"
 	"time"
 
+	containerv2 "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/require"
 	"github.com/testcontainers/testcontainers-go"
@@ -34,25 +43,28 @@ type putResponse struct {
 }
 
 const (
-	testContainerName      = "friendly"
-	versionWithNativeNames = "0.27.5"
-	testListenAddress      = "localhost:8082"
-	testHost               = "http://" + testListenAddress
+	testContainerName = "friendly"
+	testListenAddress = "localhost:8082"
+	testHost          = "http://" + testListenAddress
 )
 
 func TestIntegration(t *testing.T) {
 	rootCtx := context.Background()
-	aioImage := "nspccdev/neofs-aio-testcontainer:"
+	aioImage := "truecloudlab/frostfs-aio:"
 	versions := []string{
-		"0.29.0",
-		"0.30.0",
-		"0.32.0",
-		"0.34.0",
-		"latest",
+		"1.2.7",
+		"1.3.0",
+		"1.5.0",
+		"1.6.5",
 	}
 	key, err := keys.NewPrivateKeyFromHex("1dd37fba80fec4e6a6f13fd708d8dcb3b29def768017052f6c930fa1c5d90bbb")
 	require.NoError(t, err)
 
+	file, err := os.CreateTemp("", "wallet")
+	require.NoError(t, err)
+	defer os.Remove(file.Name())
+	makeTempWallet(t, key, file.Name())
+
 	var ownerID user.ID
 	user.IDFromKey(&ownerID, key.PrivateKey.PublicKey)
 
@@ -60,16 +72,26 @@ func TestIntegration(t *testing.T) {
 		ctx, cancel2 := context.WithCancel(rootCtx)
 
 		aioContainer := createDockerContainer(ctx, t, aioImage+version)
-		server, cancel := runServer()
+		if strings.HasPrefix(version, "1.6") {
+			registerUser(t, ctx, aioContainer, file.Name())
+		}
+
+		// See the logs from the command execution.
+		server, cancel := runServer(file.Name())
 		clientPool := getPool(ctx, t, key)
-		CID, err := createContainer(ctx, t, clientPool, ownerID, version)
+		CID, err := createContainer(ctx, t, clientPool, ownerID)
 		require.NoError(t, err, version)
 
-		t.Run("simple put "+version, func(t *testing.T) { simplePut(ctx, t, clientPool, CID, version) })
+		token := makeBearerToken(t, key, ownerID, version)
+
+		t.Run("simple put "+version, func(t *testing.T) { simplePut(ctx, t, clientPool, CID) })
+		t.Run("put with bearer token in header"+version, func(t *testing.T) { putWithBearerTokenInHeader(ctx, t, clientPool, CID, token) })
+		t.Run("put with bearer token in cookie"+version, func(t *testing.T) { putWithBearerTokenInCookie(ctx, t, clientPool, CID, token) })
 		t.Run("put with duplicate keys "+version, func(t *testing.T) { putWithDuplicateKeys(t, CID) })
-		t.Run("simple get "+version, func(t *testing.T) { simpleGet(ctx, t, clientPool, ownerID, CID, version) })
-		t.Run("get by attribute "+version, func(t *testing.T) { getByAttr(ctx, t, clientPool, ownerID, CID, version) })
-		t.Run("get zip "+version, func(t *testing.T) { getZip(ctx, t, clientPool, ownerID, CID, version) })
+		t.Run("simple get "+version, func(t *testing.T) { simpleGet(ctx, t, clientPool, ownerID, CID) })
+		t.Run("get by attribute "+version, func(t *testing.T) { getByAttr(ctx, t, clientPool, ownerID, CID) })
+		t.Run("get zip "+version, func(t *testing.T) { getZip(ctx, t, clientPool, ownerID, CID) })
+		t.Run("test namespaces "+version, func(t *testing.T) { checkNamespaces(ctx, t, clientPool, ownerID, CID) })
 
 		cancel()
 		server.Wait()
@@ -79,28 +101,59 @@ func TestIntegration(t *testing.T) {
 	}
 }
 
-func runServer() (App, context.CancelFunc) {
+func runServer(pathToWallet string) (App, context.CancelFunc) {
 	cancelCtx, cancel := context.WithCancel(context.Background())
 
 	v := getDefaultConfig()
-	l, lvl := newLogger(v)
-	application := newApp(cancelCtx, WithConfig(v), WithLogger(l, lvl))
-	go application.Serve(cancelCtx)
+	v.Set(cfgWalletPath, pathToWallet)
+	v.Set(cfgWalletPassphrase, "")
+
+	application := newApp(cancelCtx, v)
+	go application.Serve()
 
 	return application, cancel
 }
 
-func simplePut(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID, version string) {
+func simplePut(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID) {
 	url := testHost + "/upload/" + CID.String()
 	makePutRequestAndCheck(ctx, t, p, CID, url)
 
-	if version >= versionWithNativeNames {
-		url = testHost + "/upload/" + testContainerName
-		makePutRequestAndCheck(ctx, t, p, CID, url)
-	}
+	url = testHost + "/upload/" + testContainerName
+	makePutRequestAndCheck(ctx, t, p, CID, url)
+}
+
+func putWithBearerTokenInHeader(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID, token string) {
+	url := testHost + "/upload/" + CID.String()
+
+	request, content, attributes := makePutRequest(t, url)
+	request.Header.Set("Authorization", "Bearer "+token)
+	resp, err := http.DefaultClient.Do(request)
+	require.NoError(t, err)
+
+	checkPutResponse(ctx, t, p, CID, resp, content, attributes)
+}
+
+func putWithBearerTokenInCookie(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID, token string) {
+	url := testHost + "/upload/" + CID.String()
+
+	request, content, attributes := makePutRequest(t, url)
+	request.AddCookie(&http.Cookie{Name: "Bearer", Value: token})
+	resp, err := http.DefaultClient.Do(request)
+	require.NoError(t, err)
+
+	checkPutResponse(ctx, t, p, CID, resp, content, attributes)
 }
 
 func makePutRequestAndCheck(ctx context.Context, t *testing.T, p *pool.Pool, cnrID cid.ID, url string) {
+	request, content, attributes := makePutRequest(t, url)
+
+	resp, err := http.DefaultClient.Do(request)
+	require.NoError(t, err)
+
+	checkPutResponse(ctx, t, p, cnrID, resp, content, attributes)
+}
+
+func makePutRequest(t *testing.T, url string) (*http.Request, string, map[string]string) {
 	content := "content of file"
 	keyAttr, valAttr := "User-Attribute", "user value"
 	attributes := map[string]string{
@@ -122,9 +175,10 @@ func makePutRequestAndCheck(ctx context.Context, t *testing.T, p *pool.Pool, cnr
 	request.Header.Set("Content-Type", w.FormDataContentType())
 	request.Header.Set("X-Attribute-"+keyAttr, valAttr)
 
-	resp, err := http.DefaultClient.Do(request)
-	require.NoError(t, err)
+	return request, content, attributes
+}
 
+func checkPutResponse(ctx context.Context, t *testing.T, p *pool.Pool, cnrID cid.ID, resp *http.Response, content string, attributes map[string]string) {
 	defer func() {
 		err := resp.Body.Close()
 		require.NoError(t, err)
@@ -208,7 +262,7 @@ func putWithDuplicateKeys(t *testing.T, CID cid.ID) {
 	require.Equal(t, http.StatusBadRequest, resp.StatusCode)
 }
 
-func simpleGet(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID, version string) {
+func simpleGet(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID) {
 	content := "content of file"
 	attributes := map[string]string{
 		"some-attr": "some-get-value",
@@ -220,11 +274,9 @@ func simpleGet(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID
 	require.NoError(t, err)
 	checkGetResponse(t, resp, content, attributes)
 
-	if version >= versionWithNativeNames {
-		resp, err = http.Get(testHost + "/get/" + testContainerName + "/" + id.String())
-		require.NoError(t, err)
-		checkGetResponse(t, resp, content, attributes)
-	}
+	resp, err = http.Get(testHost + "/get/" + testContainerName + "/" + id.String())
+	require.NoError(t, err)
+	checkGetResponse(t, resp, content, attributes)
 }
 
 func checkGetResponse(t *testing.T, resp *http.Response, content string, attributes map[string]string) {
@@ -257,7 +309,7 @@ func checkGetByAttrResponse(t *testing.T, resp *http.Response, content string, a
 	}
 }
 
-func getByAttr(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID, version string) {
+func getByAttr(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID) {
 	keyAttr, valAttr := "some-attr", "some-get-by-attr-value"
 	content := "content of file"
 	attributes := map[string]string{keyAttr: valAttr}
@@ -274,14 +326,12 @@ func getByAttr(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID
 	require.NoError(t, err)
 	checkGetByAttrResponse(t, resp, content, expectedAttr)
 
-	if version >= versionWithNativeNames {
-		resp, err = http.Get(testHost + "/get_by_attribute/" + testContainerName + "/" + keyAttr + "/" + valAttr)
-		require.NoError(t, err)
-		checkGetByAttrResponse(t, resp, content, expectedAttr)
-	}
+	resp, err = http.Get(testHost + "/get_by_attribute/" + testContainerName + "/" + keyAttr + "/" + valAttr)
+	require.NoError(t, err)
+	checkGetByAttrResponse(t, resp, content, expectedAttr)
 }
 
-func getZip(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID, version string) {
+func getZip(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID) {
 	names := []string{"zipfolder/dir/name1.txt", "zipfolder/name2.txt"}
 	contents := []string{"content of file1", "content of file2"}
 	attributes1 := map[string]string{object.AttributeFilePath: names[0]}
@@ -293,10 +343,8 @@ func getZip(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID us
 	baseURL := testHost + "/zip/" + CID.String()
 	makeZipTest(t, baseURL, names, contents)
 
-	if version >= versionWithNativeNames {
-		baseURL = testHost + "/zip/" + testContainerName
-		makeZipTest(t, baseURL, names, contents)
-	}
+	baseURL = testHost + "/zip/" + testContainerName
+	makeZipTest(t, baseURL, names, contents)
 }
 
 func makeZipTest(t *testing.T, baseURL string, names, contents []string) {
@@ -348,10 +396,44 @@ func checkZip(t *testing.T, data []byte, length int64, names, contents []string)
 	}
 }
 
+func checkNamespaces(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID) {
+	content := "content of file"
+	attributes := map[string]string{
+		"some-attr": "some-get-value",
+	}
+
+	id := putObject(ctx, t, clientPool, ownerID, CID, content, attributes)
+
+	req, err := http.NewRequest(http.MethodGet, testHost+"/get/"+testContainerName+"/"+id.String(), nil)
+	require.NoError(t, err)
+	req.Header.Set(defaultNamespaceHeader, "")
+
+	resp, err := http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	checkGetResponse(t, resp, content, attributes)
+
+	req, err = http.NewRequest(http.MethodGet, testHost+"/get/"+testContainerName+"/"+id.String(), nil)
+	require.NoError(t, err)
+	req.Header.Set(defaultNamespaceHeader, "root")
+
+	resp, err = http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	checkGetResponse(t, resp, content, attributes)
+
+	req, err = http.NewRequest(http.MethodGet, testHost+"/get/"+testContainerName+"/"+id.String(), nil)
+	require.NoError(t, err)
+	req.Header.Set(defaultNamespaceHeader, "root2")
+
+	resp, err = http.DefaultClient.Do(req)
+	require.NoError(t, err)
+	require.Equal(t, http.StatusNotFound, resp.StatusCode)
+
+}
+
 func createDockerContainer(ctx context.Context, t *testing.T, image string) testcontainers.Container {
 	req := testcontainers.ContainerRequest{
 		Image:       image,
-		WaitingFor:  wait.NewLogStrategy("aio container started").WithStartupTimeout(30 * time.Second),
+		WaitingFor:  wait.NewLogStrategy("aio container started").WithStartupTimeout(2 * time.Minute),
 		Name:        "aio",
 		Hostname:    "aio",
 		NetworkMode: "host",
@@ -391,7 +473,7 @@ func getPool(ctx context.Context, t *testing.T, key *keys.PrivateKey) *pool.Pool
 	return clientPool
 }
 
-func createContainer(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, version string) (cid.ID, error) {
+func createContainer(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID) (cid.ID, error) {
 	var policy netmap.PlacementPolicy
 	err := policy.DecodeString("REP 1")
 	require.NoError(t, err)
@@ -404,11 +486,11 @@ func createContainer(ctx context.Context, t *testing.T, clientPool *pool.Pool, o
 
 	container.SetCreationTime(&cnr, time.Now())
 
-	if version >= versionWithNativeNames {
-		var domain container.Domain
-		domain.SetName(testContainerName)
-		container.WriteDomain(&cnr, domain)
-	}
+	var domain container.Domain
+	domain.SetName(testContainerName)
+
+	cnr.SetAttribute(containerv2.SysAttributeName, domain.Name())
+	cnr.SetAttribute(containerv2.SysAttributeZone, domain.Zone())
 
 	var waitPrm pool.WaitParams
 	waitPrm.SetTimeout(15 * time.Second)
@@ -430,7 +512,7 @@ func createContainer(ctx context.Context, t *testing.T, clientPool *pool.Pool, o
 func putObject(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID user.ID, CID cid.ID, content string, attributes map[string]string) oid.ID {
 	obj := object.New()
 	obj.SetContainerID(CID)
-	obj.SetOwnerID(&ownerID)
+	obj.SetOwnerID(ownerID)
 
 	var attrs []object.Attribute
 	for key, val := range attributes {
@@ -448,5 +530,51 @@ func putObject(ctx context.Context, t *testing.T, clientPool *pool.Pool, ownerID
 	id, err := clientPool.PutObject(ctx, prm)
 	require.NoError(t, err)
 
-	return id
+	return id.ObjectID
+}
+
+func registerUser(t *testing.T, ctx context.Context, aioContainer testcontainers.Container, pathToWallet string) {
+	err := aioContainer.CopyFileToContainer(ctx, pathToWallet, "/usr/wallet.json", 644)
+	require.NoError(t, err)
+
+	_, err = aioContainer.Exec(ctx, []string{
+		"/usr/bin/frostfs-s3-authmate", "register-user",
+		"--wallet", "/usr/wallet.json",
+		"--rpc-endpoint", "http://localhost:30333",
+		"--contract-wallet", "/config/s3-gw-wallet.json"})
+	require.NoError(t, err)
+}
+
+func makeBearerToken(t *testing.T, key *keys.PrivateKey, ownerID user.ID, version string) string {
+	tkn := new(bearer.Token)
+	tkn.ForUser(ownerID)
+	tkn.SetExp(10000)
+
+	if version == "1.2.7" {
+		tkn.SetEACLTable(*eacl.NewTable())
+	} else {
+		tkn.SetImpersonate(true)
+	}
+
+	err := tkn.Sign(key.PrivateKey)
+	require.NoError(t, err)
+
+	t64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
+	require.NotEmpty(t, t64)
+
+	return t64
+}
+
+func makeTempWallet(t *testing.T, key *keys.PrivateKey, path string) {
+	w, err := wallet.NewWallet(path)
+	require.NoError(t, err)
+
+	acc := wallet.NewAccountFromPrivateKey(key)
+	err = acc.Encrypt("", w.Scrypt)
+	require.NoError(t, err)
+
+	w.AddAccount(acc)
+
+	err = w.Save()
+	require.NoError(t, err)
 }

cmd/http-gw/main.go

@@ -9,9 +9,8 @@ import (
 func main() {
 	globalContext, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	v := settings()
-	logger, atomicLevel := newLogger(v)
 
-	application := newApp(globalContext, WithLogger(logger, atomicLevel), WithConfig(v))
-	go application.Serve(globalContext)
+	application := newApp(globalContext, v)
+	go application.Serve()
 	application.Wait()
 }

cmd/http-gw/server.go

@@ -68,11 +68,13 @@ func newServer(ctx context.Context, serverInfo ServerInfo) (*server, error) {
 
 	if serverInfo.TLS.Enabled {
 		if err = tlsProvider.UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
-			return nil, fmt.Errorf("failed to update cert: %w", err)
+			lnErr := ln.Close()
+			return nil, fmt.Errorf("failed to update cert (listener close: %v): %w", lnErr, err)
 		}
 
 		ln = tls.NewListener(ln, &tls.Config{
 			GetCertificate: tlsProvider.GetCertificate,
+			NextProtos:     []string{"h2"}, // required to enable HTTP/2 requests in `http.Serve`
 		})
 	}
 

cmd/http-gw/server_test.go

@@ -0,0 +1,119 @@
+package main
+
+import (
+	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"fmt"
+	"math/big"
+	"net"
+	"net/http"
+	"os"
+	"path"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"golang.org/x/net/http2"
+)
+
+const (
+	expHeaderKey   = "Foo"
+	expHeaderValue = "Bar"
+)
+
+func TestHTTP2TLS(t *testing.T) {
+	ctx := context.Background()
+	certPath, keyPath := prepareTestCerts(t)
+
+	srv := &http.Server{
+		Handler: http.HandlerFunc(testHandler),
+	}
+
+	tlsListener, err := newServer(ctx, ServerInfo{
+		Address: ":0",
+		TLS: ServerTLSInfo{
+			Enabled:  true,
+			CertFile: certPath,
+			KeyFile:  keyPath,
+		},
+	})
+	require.NoError(t, err)
+	port := tlsListener.Listener().Addr().(*net.TCPAddr).Port
+	addr := fmt.Sprintf("https://localhost:%d", port)
+
+	go func() {
+		_ = srv.Serve(tlsListener.Listener())
+	}()
+
+	// Server is running, now send HTTP/2 request
+
+	tlsClientConfig := &tls.Config{
+		InsecureSkipVerify: true,
+	}
+
+	cliHTTP1 := http.Client{Transport: &http.Transport{TLSClientConfig: tlsClientConfig}}
+	cliHTTP2 := http.Client{Transport: &http2.Transport{TLSClientConfig: tlsClientConfig}}
+
+	req, err := http.NewRequest("GET", addr, nil)
+	require.NoError(t, err)
+	req.Header[expHeaderKey] = []string{expHeaderValue}
+
+	resp, err := cliHTTP1.Do(req)
+	require.NoError(t, err)
+	require.Equal(t, http.StatusOK, resp.StatusCode)
+
+	resp, err = cliHTTP2.Do(req)
+	require.NoError(t, err)
+	require.Equal(t, http.StatusOK, resp.StatusCode)
+}
+
+func testHandler(resp http.ResponseWriter, req *http.Request) {
+	hdr, ok := req.Header[expHeaderKey]
+	if !ok || len(hdr) != 1 || hdr[0] != expHeaderValue {
+		resp.WriteHeader(http.StatusBadRequest)
+	} else {
+		resp.WriteHeader(http.StatusOK)
+	}
+}
+
+func prepareTestCerts(t *testing.T) (certPath, keyPath string) {
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	require.NoError(t, err)
+
+	template := x509.Certificate{
+		SerialNumber:          big.NewInt(1),
+		Subject:               pkix.Name{CommonName: "localhost"},
+		NotBefore:             time.Now(),
+		NotAfter:              time.Now().Add(time.Hour * 24 * 365),
+		KeyUsage:              x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
+		BasicConstraintsValid: true,
+	}
+
+	derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &privateKey.PublicKey, privateKey)
+	require.NoError(t, err)
+
+	dir := t.TempDir()
+	certPath = path.Join(dir, "cert.pem")
+	keyPath = path.Join(dir, "key.pem")
+
+	certFile, err := os.Create(certPath)
+	require.NoError(t, err)
+	defer certFile.Close()
+
+	keyFile, err := os.Create(keyPath)
+	require.NoError(t, err)
+	defer keyFile.Close()
+
+	err = pem.Encode(certFile, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
+	require.NoError(t, err)
+
+	err = pem.Encode(keyFile, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)})
+	require.NoError(t, err)
+
+	return certPath, keyPath
+}

cmd/http-gw/settings.go

@@ -0,0 +1,830 @@
+package main
+
+import (
+	"context"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"math"
+	"os"
+	"path"
+	"runtime"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	internalnet "git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/net"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	grpctracing "git.frostfs.info/TrueCloudLab/frostfs-observability/tracing/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
+	"git.frostfs.info/TrueCloudLab/zapjournald"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/spf13/pflag"
+	"github.com/spf13/viper"
+	"github.com/ssgreg/journald"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"google.golang.org/grpc"
+)
+
+const (
+	destinationStdout   = "stdout"
+	destinationJournald = "journald"
+)
+
+const (
+	defaultRebalanceTimer = 60 * time.Second
+	defaultRequestTimeout = 15 * time.Second
+	defaultConnectTimeout = 10 * time.Second
+	defaultStreamTimeout  = 10 * time.Second
+
+	defaultLoggerSamplerInterval = 1 * time.Second
+
+	defaultShutdownTimeout = 15 * time.Second
+
+	defaultPoolErrorThreshold uint32 = 100
+
+	defaultSoftMemoryLimit = math.MaxInt64
+
+	defaultBufferMaxSizeForPut = 1024 * 1024 // 1mb
+
+	defaultNamespaceHeader = "X-Frostfs-Namespace"
+
+	defaultReconnectInterval = time.Minute
+
+	defaultCORSMaxAge = 600 // seconds
+
+	defaultMultinetFallbackDelay = 300 * time.Millisecond
+
+	cfgServer      = "server"
+	cfgTLSEnabled  = "tls.enabled"
+	cfgTLSCertFile = "tls.cert_file"
+	cfgTLSKeyFile  = "tls.key_file"
+
+	cfgReconnectInterval = "reconnect_interval"
+
+	cfgIndexPageEnabled      = "index_page.enabled"
+	cfgIndexPageTemplatePath = "index_page.template_path"
+
+	cfgWorkerPoolSize = "worker_pool_size"
+
+	// Web.
+	cfgWebReadBufferSize     = "web.read_buffer_size"
+	cfgWebWriteBufferSize    = "web.write_buffer_size"
+	cfgWebReadTimeout        = "web.read_timeout"
+	cfgWebWriteTimeout       = "web.write_timeout"
+	cfgWebStreamRequestBody  = "web.stream_request_body"
+	cfgWebMaxRequestBodySize = "web.max_request_body_size"
+
+	// Metrics / Profiler.
+	cfgPrometheusEnabled = "prometheus.enabled"
+	cfgPrometheusAddress = "prometheus.address"
+	cfgPprofEnabled      = "pprof.enabled"
+	cfgPprofAddress      = "pprof.address"
+
+	// Tracing ...
+	cfgTracingEnabled    = "tracing.enabled"
+	cfgTracingExporter   = "tracing.exporter"
+	cfgTracingEndpoint   = "tracing.endpoint"
+	cfgTracingTrustedCa  = "tracing.trusted_ca"
+	cfgTracingAttributes = "tracing.attributes"
+
+	// Pool config.
+	cfgConTimeout         = "connect_timeout"
+	cfgStreamTimeout      = "stream_timeout"
+	cfgReqTimeout         = "request_timeout"
+	cfgRebalance          = "rebalance_timer"
+	cfgPoolErrorThreshold = "pool_error_threshold"
+
+	// Logger.
+	cfgLoggerLevel       = "logger.level"
+	cfgLoggerDestination = "logger.destination"
+
+	cfgLoggerSamplingEnabled    = "logger.sampling.enabled"
+	cfgLoggerSamplingInitial    = "logger.sampling.initial"
+	cfgLoggerSamplingThereafter = "logger.sampling.thereafter"
+	cfgLoggerSamplingInterval   = "logger.sampling.interval"
+
+	// Wallet.
+	cfgWalletPassphrase = "wallet.passphrase"
+	cfgWalletPath       = "wallet.path"
+	cfgWalletAddress    = "wallet.address"
+
+	// Uploader Header.
+	cfgUploaderHeaderEnableDefaultTimestamp = "upload_header.use_default_timestamp"
+
+	// Peers.
+	cfgPeers = "peers"
+
+	// NeoGo.
+	cfgRPCEndpoint = "rpc_endpoint"
+
+	// Resolving.
+	cfgResolveOrder = "resolve_order"
+
+	// Zip compression.
+	cfgZipCompression = "zip.compression"
+
+	// Runtime.
+	cfgSoftMemoryLimit = "runtime.soft_memory_limit"
+
+	// Enabling client side object preparing for PUT operations.
+	cfgClientCut = "frostfs.client_cut"
+	// Sets max buffer size for read payload in put operations.
+	cfgBufferMaxSizeForPut = "frostfs.buffer_max_size_for_put"
+	// Configuration of parameters of requests to FrostFS.
+	// Sets max attempt to make successful tree request.
+	cfgTreePoolMaxAttempts = "frostfs.tree_pool_max_attempts"
+
+	// Caching.
+	cfgBucketsCacheLifetime = "cache.buckets.lifetime"
+	cfgBucketsCacheSize     = "cache.buckets.size"
+
+	// Bucket resolving options.
+	cfgResolveNamespaceHeader   = "resolve_bucket.namespace_header"
+	cfgResolveDefaultNamespaces = "resolve_bucket.default_namespaces"
+
+	// CORS.
+	cfgCORSAllowOrigin      = "cors.allow_origin"
+	cfgCORSAllowMethods     = "cors.allow_methods"
+	cfgCORSAllowHeaders     = "cors.allow_headers"
+	cfgCORSExposeHeaders    = "cors.expose_headers"
+	cfgCORSAllowCredentials = "cors.allow_credentials"
+	cfgCORSMaxAge           = "cors.max_age"
+
+	// Multinet.
+	cfgMultinetEnabled       = "multinet.enabled"
+	cfgMultinetBalancer      = "multinet.balancer"
+	cfgMultinetRestrict      = "multinet.restrict"
+	cfgMultinetFallbackDelay = "multinet.fallback_delay"
+	cfgMultinetSubnets       = "multinet.subnets"
+
+	// Feature.
+	cfgFeaturesEnableFilepathFallback = "features.enable_filepath_fallback"
+
+	// Command line args.
+	cmdHelp          = "help"
+	cmdVersion       = "version"
+	cmdPprof         = "pprof"
+	cmdMetrics       = "metrics"
+	cmdWallet        = "wallet"
+	cmdAddress       = "address"
+	cmdConfig        = "config"
+	cmdConfigDir     = "config-dir"
+	cmdListenAddress = "listen_address"
+)
+
+var ignore = map[string]struct{}{
+	cfgPeers:   {},
+	cmdHelp:    {},
+	cmdVersion: {},
+}
+
+type Logger struct {
+	logger *zap.Logger
+	lvl    zap.AtomicLevel
+}
+
+func settings() *viper.Viper {
+	v := viper.New()
+	v.AutomaticEnv()
+	v.SetEnvPrefix(Prefix)
+	v.AllowEmptyEnv(true)
+	v.SetConfigType("yaml")
+	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	// flags setup:
+	flags := pflag.NewFlagSet("commandline", pflag.ExitOnError)
+	flags.SetOutput(os.Stdout)
+	flags.SortFlags = false
+
+	flags.Bool(cmdPprof, false, "enable pprof")
+	flags.Bool(cmdMetrics, false, "enable prometheus")
+
+	help := flags.BoolP(cmdHelp, "h", false, "show help")
+	version := flags.BoolP(cmdVersion, "v", false, "show version")
+
+	flags.StringP(cmdWallet, "w", "", `path to the wallet`)
+	flags.String(cmdAddress, "", `address of wallet account`)
+	flags.StringArray(cmdConfig, nil, "config paths")
+	flags.String(cmdConfigDir, "", "config dir path")
+	flags.Duration(cfgConTimeout, defaultConnectTimeout, "gRPC connect timeout")
+	flags.Duration(cfgStreamTimeout, defaultStreamTimeout, "gRPC individual message timeout")
+	flags.Duration(cfgReqTimeout, defaultRequestTimeout, "gRPC request timeout")
+	flags.Duration(cfgRebalance, defaultRebalanceTimer, "gRPC connection rebalance timer")
+
+	flags.String(cmdListenAddress, "0.0.0.0:8080", "addresses to listen")
+	flags.String(cfgTLSCertFile, "", "TLS certificate path")
+	flags.String(cfgTLSKeyFile, "", "TLS key path")
+	peers := flags.StringArrayP(cfgPeers, "p", nil, "FrostFS nodes")
+
+	resolveMethods := flags.StringSlice(cfgResolveOrder, []string{resolver.NNSResolver, resolver.DNSResolver}, "set container name resolve order")
+
+	// set defaults:
+
+	// logger:
+	v.SetDefault(cfgLoggerLevel, "debug")
+	v.SetDefault(cfgLoggerDestination, "stdout")
+	v.SetDefault(cfgLoggerSamplingEnabled, false)
+	v.SetDefault(cfgLoggerSamplingThereafter, 100)
+	v.SetDefault(cfgLoggerSamplingInitial, 100)
+	v.SetDefault(cfgLoggerSamplingInterval, defaultLoggerSamplerInterval)
+
+	// pool:
+	v.SetDefault(cfgPoolErrorThreshold, defaultPoolErrorThreshold)
+
+	// frostfs:
+	v.SetDefault(cfgBufferMaxSizeForPut, defaultBufferMaxSizeForPut)
+
+	// web-server:
+	v.SetDefault(cfgWebReadBufferSize, 4096)
+	v.SetDefault(cfgWebWriteBufferSize, 4096)
+	v.SetDefault(cfgWebReadTimeout, time.Minute*10)
+	v.SetDefault(cfgWebWriteTimeout, time.Minute*5)
+	v.SetDefault(cfgWebStreamRequestBody, true)
+	v.SetDefault(cfgWebMaxRequestBodySize, fasthttp.DefaultMaxRequestBodySize)
+
+	v.SetDefault(cfgWorkerPoolSize, 1000)
+	// upload header
+	v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
+
+	// zip:
+	v.SetDefault(cfgZipCompression, false)
+
+	// metrics
+	v.SetDefault(cfgPprofAddress, "localhost:8083")
+	v.SetDefault(cfgPrometheusAddress, "localhost:8084")
+
+	// resolve bucket
+	v.SetDefault(cfgResolveNamespaceHeader, defaultNamespaceHeader)
+	v.SetDefault(cfgResolveDefaultNamespaces, []string{"", "root"})
+
+	// multinet
+	v.SetDefault(cfgMultinetFallbackDelay, defaultMultinetFallbackDelay)
+
+	// Binding flags
+	if err := v.BindPFlag(cfgPprofEnabled, flags.Lookup(cmdPprof)); err != nil {
+		panic(err)
+	}
+	if err := v.BindPFlag(cfgPrometheusEnabled, flags.Lookup(cmdMetrics)); err != nil {
+		panic(err)
+	}
+
+	if err := v.BindPFlag(cfgWalletPath, flags.Lookup(cmdWallet)); err != nil {
+		panic(err)
+	}
+
+	if err := v.BindPFlag(cfgWalletAddress, flags.Lookup(cmdAddress)); err != nil {
+		panic(err)
+	}
+
+	if err := v.BindPFlags(flags); err != nil {
+		panic(err)
+	}
+
+	if err := v.BindPFlag(cfgServer+".0.address", flags.Lookup(cmdListenAddress)); err != nil {
+		panic(err)
+	}
+	if err := v.BindPFlag(cfgServer+".0."+cfgTLSKeyFile, flags.Lookup(cfgTLSKeyFile)); err != nil {
+		panic(err)
+	}
+	if err := v.BindPFlag(cfgServer+".0."+cfgTLSCertFile, flags.Lookup(cfgTLSCertFile)); err != nil {
+		panic(err)
+	}
+
+	if err := flags.Parse(os.Args); err != nil {
+		panic(err)
+	}
+
+	if v.IsSet(cfgServer+".0."+cfgTLSKeyFile) && v.IsSet(cfgServer+".0."+cfgTLSCertFile) {
+		v.Set(cfgServer+".0."+cfgTLSEnabled, true)
+	}
+
+	if resolveMethods != nil {
+		v.SetDefault(cfgResolveOrder, *resolveMethods)
+	}
+
+	switch {
+	case help != nil && *help:
+		fmt.Printf("FrostFS HTTP Gateway %s\n", Version)
+		flags.PrintDefaults()
+
+		fmt.Println()
+		fmt.Println("Default environments:")
+		fmt.Println()
+		keys := v.AllKeys()
+		sort.Strings(keys)
+
+		for i := range keys {
+			if _, ok := ignore[keys[i]]; ok {
+				continue
+			}
+
+			defaultValue := v.GetString(keys[i])
+			if len(defaultValue) == 0 {
+				continue
+			}
+
+			k := strings.Replace(keys[i], ".", "_", -1)
+			fmt.Printf("%s_%s = %s\n", Prefix, strings.ToUpper(k), defaultValue)
+		}
+
+		fmt.Println()
+		fmt.Println("Peers preset:")
+		fmt.Println()
+
+		fmt.Printf("%s_%s_[N]_ADDRESS = string\n", Prefix, strings.ToUpper(cfgPeers))
+		fmt.Printf("%s_%s_[N]_WEIGHT = float\n", Prefix, strings.ToUpper(cfgPeers))
+
+		os.Exit(0)
+	case version != nil && *version:
+		fmt.Printf("FrostFS HTTP Gateway\nVersion: %s\nGoVersion: %s\n", Version, runtime.Version())
+		os.Exit(0)
+	}
+
+	if err := readInConfig(v); err != nil {
+		panic(err)
+	}
+
+	if peers != nil && len(*peers) > 0 {
+		for i := range *peers {
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i])
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1)
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".priority", 1)
+		}
+	}
+
+	return v
+}
+
+func readInConfig(v *viper.Viper) error {
+	if v.IsSet(cmdConfig) {
+		if err := readConfig(v); err != nil {
+			return err
+		}
+	}
+
+	if v.IsSet(cmdConfigDir) {
+		if err := readConfigDir(v); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func readConfigDir(v *viper.Viper) error {
+	cfgSubConfigDir := v.GetString(cmdConfigDir)
+	entries, err := os.ReadDir(cfgSubConfigDir)
+	if err != nil {
+		return err
+	}
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+		ext := path.Ext(entry.Name())
+		if ext != ".yaml" && ext != ".yml" {
+			continue
+		}
+
+		if err = mergeConfig(v, path.Join(cfgSubConfigDir, entry.Name())); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func readConfig(v *viper.Viper) error {
+	for _, fileName := range v.GetStringSlice(cmdConfig) {
+		if err := mergeConfig(v, fileName); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func mergeConfig(v *viper.Viper, fileName string) error {
+	cfgFile, err := os.Open(fileName)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		if errClose := cfgFile.Close(); errClose != nil {
+			panic(errClose)
+		}
+	}()
+
+	return v.MergeConfig(cfgFile)
+}
+
+type LoggerAppSettings interface {
+	DroppedLogsInc()
+}
+
+func pickLogger(v *viper.Viper, settings LoggerAppSettings) *Logger {
+	lvl, err := getLogLevel(v)
+	if err != nil {
+		panic(err)
+	}
+
+	dest := v.GetString(cfgLoggerDestination)
+
+	switch dest {
+	case destinationStdout:
+		return newStdoutLogger(v, lvl, settings)
+	case destinationJournald:
+		return newJournaldLogger(v, lvl, settings)
+	default:
+		panic(fmt.Sprintf("wrong destination for logger: %s", dest))
+	}
+}
+
+// newStdoutLogger constructs a zap.Logger instance for current application.
+// Panics on failure.
+//
+// Logger is built from zap's production logging configuration with:
+//   - parameterized level (debug by default)
+//   - console encoding
+//   - ISO8601 time encoding
+//
+// Logger records a stack trace for all messages at or above fatal level.
+//
+// See also zapcore.Level, zap.NewProductionConfig, zap.AddStacktrace.
+func newStdoutLogger(v *viper.Viper, lvl zapcore.Level, settings LoggerAppSettings) *Logger {
+	stdout := zapcore.AddSync(os.Stderr)
+	level := zap.NewAtomicLevelAt(lvl)
+
+	consoleOutCore := zapcore.NewCore(newLogEncoder(), stdout, level)
+	consoleOutCore = applyZapCoreMiddlewares(consoleOutCore, v, settings)
+
+	return &Logger{
+		logger: zap.New(consoleOutCore, zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel))),
+		lvl:    level,
+	}
+}
+
+func newJournaldLogger(v *viper.Viper, lvl zapcore.Level, settings LoggerAppSettings) *Logger {
+	level := zap.NewAtomicLevelAt(lvl)
+
+	encoder := zapjournald.NewPartialEncoder(newLogEncoder(), zapjournald.SyslogFields)
+
+	core := zapjournald.NewCore(level, encoder, &journald.Journal{}, zapjournald.SyslogFields)
+	coreWithContext := core.With([]zapcore.Field{
+		zapjournald.SyslogFacility(zapjournald.LogDaemon),
+		zapjournald.SyslogIdentifier(),
+		zapjournald.SyslogPid(),
+	})
+
+	coreWithContext = applyZapCoreMiddlewares(coreWithContext, v, settings)
+
+	return &Logger{
+		logger: zap.New(coreWithContext, zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel))),
+		lvl:    level,
+	}
+}
+
+func newLogEncoder() zapcore.Encoder {
+	c := zap.NewProductionEncoderConfig()
+	c.EncodeTime = zapcore.ISO8601TimeEncoder
+
+	return zapcore.NewConsoleEncoder(c)
+}
+
+func applyZapCoreMiddlewares(core zapcore.Core, v *viper.Viper, settings LoggerAppSettings) zapcore.Core {
+	if v.GetBool(cfgLoggerSamplingEnabled) {
+		core = zapcore.NewSamplerWithOptions(core,
+			v.GetDuration(cfgLoggerSamplingInterval),
+			v.GetInt(cfgLoggerSamplingInitial),
+			v.GetInt(cfgLoggerSamplingThereafter),
+			zapcore.SamplerHook(func(_ zapcore.Entry, dec zapcore.SamplingDecision) {
+				if dec&zapcore.LogDropped > 0 {
+					settings.DroppedLogsInc()
+				}
+			}))
+	}
+
+	return core
+}
+
+func getLogLevel(v *viper.Viper) (zapcore.Level, error) {
+	var lvl zapcore.Level
+	lvlStr := v.GetString(cfgLoggerLevel)
+	err := lvl.UnmarshalText([]byte(lvlStr))
+	if err != nil {
+		return lvl, fmt.Errorf("incorrect logger level configuration %s (%v), "+
+			"value should be one of %v", lvlStr, err, [...]zapcore.Level{
+			zapcore.DebugLevel,
+			zapcore.InfoLevel,
+			zapcore.WarnLevel,
+			zapcore.ErrorLevel,
+			zapcore.DPanicLevel,
+			zapcore.PanicLevel,
+			zapcore.FatalLevel,
+		})
+	}
+	return lvl, nil
+}
+
+func fetchReconnectInterval(cfg *viper.Viper) time.Duration {
+	reconnect := cfg.GetDuration(cfgReconnectInterval)
+	if reconnect <= 0 {
+		reconnect = defaultReconnectInterval
+	}
+
+	return reconnect
+}
+
+func fetchIndexPageTemplate(v *viper.Viper, l *zap.Logger) (string, bool) {
+	if !v.GetBool(cfgIndexPageEnabled) {
+		return "", false
+	}
+
+	reader, err := os.Open(v.GetString(cfgIndexPageTemplatePath))
+	if err != nil {
+		l.Warn(logs.FailedToReadIndexPageTemplate, zap.Error(err))
+		return "", true
+	}
+
+	tmpl, err := io.ReadAll(reader)
+	if err != nil {
+		l.Warn(logs.FailedToReadIndexPageTemplate, zap.Error(err))
+		return "", true
+	}
+
+	l.Info(logs.SetCustomIndexPageTemplate)
+	return string(tmpl), true
+}
+
+func fetchDefaultNamespaces(v *viper.Viper) []string {
+	namespaces := v.GetStringSlice(cfgResolveDefaultNamespaces)
+
+	for i := range namespaces { // to be set namespaces in env variable as `HTTP_GW_RESOLVE_BUCKET_DEFAULT_NAMESPACES="" "root"`
+		namespaces[i] = strings.Trim(namespaces[i], "\"")
+	}
+
+	return namespaces
+}
+
+func fetchCORSMaxAge(v *viper.Viper) int {
+	maxAge := v.GetInt(cfgCORSMaxAge)
+	if maxAge <= 0 {
+		maxAge = defaultCORSMaxAge
+	}
+
+	return maxAge
+}
+
+func fetchServers(v *viper.Viper, log *zap.Logger) []ServerInfo {
+	var servers []ServerInfo
+	seen := make(map[string]struct{})
+
+	for i := 0; ; i++ {
+		key := cfgServer + "." + strconv.Itoa(i) + "."
+
+		var serverInfo ServerInfo
+		serverInfo.Address = v.GetString(key + "address")
+		serverInfo.TLS.Enabled = v.GetBool(key + cfgTLSEnabled)
+		serverInfo.TLS.KeyFile = v.GetString(key + cfgTLSKeyFile)
+		serverInfo.TLS.CertFile = v.GetString(key + cfgTLSCertFile)
+
+		if serverInfo.Address == "" {
+			break
+		}
+
+		if _, ok := seen[serverInfo.Address]; ok {
+			log.Warn(logs.WarnDuplicateAddress, zap.String("address", serverInfo.Address))
+			continue
+		}
+		seen[serverInfo.Address] = struct{}{}
+		servers = append(servers, serverInfo)
+	}
+
+	return servers
+}
+
+func getPools(ctx context.Context, logger *zap.Logger, cfg *viper.Viper, dialSource *internalnet.DialerSource) (*pool.Pool, *treepool.Pool, *keys.PrivateKey) {
+	key, err := getFrostFSKey(cfg, logger)
+	if err != nil {
+		logger.Fatal(logs.CouldNotLoadFrostFSPrivateKey, zap.Error(err))
+	}
+
+	var prm pool.InitParameters
+	var prmTree treepool.InitParameters
+
+	prm.SetKey(&key.PrivateKey)
+	prmTree.SetKey(key)
+	logger.Info(logs.UsingCredentials, zap.String("FrostFS", hex.EncodeToString(key.PublicKey().Bytes())))
+
+	for _, peer := range fetchPeers(logger, cfg) {
+		prm.AddNode(peer)
+		prmTree.AddNode(peer)
+	}
+
+	connTimeout := cfg.GetDuration(cfgConTimeout)
+	if connTimeout <= 0 {
+		connTimeout = defaultConnectTimeout
+	}
+	prm.SetNodeDialTimeout(connTimeout)
+	prmTree.SetNodeDialTimeout(connTimeout)
+
+	streamTimeout := cfg.GetDuration(cfgStreamTimeout)
+	if streamTimeout <= 0 {
+		streamTimeout = defaultStreamTimeout
+	}
+	prm.SetNodeStreamTimeout(streamTimeout)
+	prmTree.SetNodeStreamTimeout(streamTimeout)
+
+	healthCheckTimeout := cfg.GetDuration(cfgReqTimeout)
+	if healthCheckTimeout <= 0 {
+		healthCheckTimeout = defaultRequestTimeout
+	}
+	prm.SetHealthcheckTimeout(healthCheckTimeout)
+	prmTree.SetHealthcheckTimeout(healthCheckTimeout)
+
+	rebalanceInterval := cfg.GetDuration(cfgRebalance)
+	if rebalanceInterval <= 0 {
+		rebalanceInterval = defaultRebalanceTimer
+	}
+	prm.SetClientRebalanceInterval(rebalanceInterval)
+	prmTree.SetClientRebalanceInterval(rebalanceInterval)
+
+	errorThreshold := cfg.GetUint32(cfgPoolErrorThreshold)
+	if errorThreshold <= 0 {
+		errorThreshold = defaultPoolErrorThreshold
+	}
+	prm.SetErrorThreshold(errorThreshold)
+	prm.SetLogger(logger)
+	prmTree.SetLogger(logger)
+
+	prmTree.SetMaxRequestAttempts(cfg.GetInt(cfgTreePoolMaxAttempts))
+
+	interceptors := []grpc.DialOption{
+		grpc.WithUnaryInterceptor(grpctracing.NewUnaryClientInteceptor()),
+		grpc.WithStreamInterceptor(grpctracing.NewStreamClientInterceptor()),
+		grpc.WithContextDialer(dialSource.GrpcContextDialer()),
+	}
+	prm.SetGRPCDialOptions(interceptors...)
+	prmTree.SetGRPCDialOptions(interceptors...)
+
+	p, err := pool.NewPool(prm)
+	if err != nil {
+		logger.Fatal(logs.FailedToCreateConnectionPool, zap.Error(err))
+	}
+
+	if err = p.Dial(ctx); err != nil {
+		logger.Fatal(logs.FailedToDialConnectionPool, zap.Error(err))
+	}
+
+	treePool, err := treepool.NewPool(prmTree)
+	if err != nil {
+		logger.Fatal(logs.FailedToCreateTreePool, zap.Error(err))
+	}
+	if err = treePool.Dial(ctx); err != nil {
+		logger.Fatal(logs.FailedToDialTreePool, zap.Error(err))
+	}
+
+	return p, treePool, key
+}
+
+func fetchPeers(l *zap.Logger, v *viper.Viper) []pool.NodeParam {
+	var nodes []pool.NodeParam
+	for i := 0; ; i++ {
+		key := cfgPeers + "." + strconv.Itoa(i) + "."
+		address := v.GetString(key + "address")
+		weight := v.GetFloat64(key + "weight")
+		priority := v.GetInt(key + "priority")
+
+		if address == "" {
+			break
+		}
+		if weight <= 0 { // unspecified or wrong
+			weight = 1
+		}
+		if priority <= 0 { // unspecified or wrong
+			priority = 1
+		}
+
+		nodes = append(nodes, pool.NewNodeParam(priority, address, weight))
+
+		l.Info(logs.AddedStoragePeer,
+			zap.Int("priority", priority),
+			zap.String("address", address),
+			zap.Float64("weight", weight))
+	}
+
+	return nodes
+}
+
+func fetchSoftMemoryLimit(cfg *viper.Viper) int64 {
+	softMemoryLimit := cfg.GetSizeInBytes(cfgSoftMemoryLimit)
+	if softMemoryLimit <= 0 {
+		softMemoryLimit = defaultSoftMemoryLimit
+	}
+
+	return int64(softMemoryLimit)
+}
+
+func getCacheOptions(v *viper.Viper, l *zap.Logger) *cache.Config {
+	cacheCfg := cache.DefaultBucketConfig(l)
+
+	cacheCfg.Lifetime = fetchCacheLifetime(v, l, cfgBucketsCacheLifetime, cacheCfg.Lifetime)
+	cacheCfg.Size = fetchCacheSize(v, l, cfgBucketsCacheSize, cacheCfg.Size)
+
+	return cacheCfg
+}
+
+func fetchCacheLifetime(v *viper.Viper, l *zap.Logger, cfgEntry string, defaultValue time.Duration) time.Duration {
+	if v.IsSet(cfgEntry) {
+		lifetime := v.GetDuration(cfgEntry)
+		if lifetime <= 0 {
+			l.Error(logs.InvalidLifetimeUsingDefaultValue,
+				zap.String("parameter", cfgEntry),
+				zap.Duration("value in config", lifetime),
+				zap.Duration("default", defaultValue))
+		} else {
+			return lifetime
+		}
+	}
+
+	return defaultValue
+}
+
+func fetchCacheSize(v *viper.Viper, l *zap.Logger, cfgEntry string, defaultValue int) int {
+	if v.IsSet(cfgEntry) {
+		size := v.GetInt(cfgEntry)
+		if size <= 0 {
+			l.Error(logs.InvalidCacheSizeUsingDefaultValue,
+				zap.String("parameter", cfgEntry),
+				zap.Int("value in config", size),
+				zap.Int("default", defaultValue))
+		} else {
+			return size
+		}
+	}
+
+	return defaultValue
+}
+
+func getDialerSource(logger *zap.Logger, cfg *viper.Viper) *internalnet.DialerSource {
+	source, err := internalnet.NewDialerSource(fetchMultinetConfig(cfg, logger))
+	if err != nil {
+		logger.Fatal(logs.FailedToLoadMultinetConfig, zap.Error(err))
+	}
+	return source
+}
+
+func fetchMultinetConfig(v *viper.Viper, l *zap.Logger) (cfg internalnet.Config) {
+	cfg.Enabled = v.GetBool(cfgMultinetEnabled)
+	cfg.Balancer = v.GetString(cfgMultinetBalancer)
+	cfg.Restrict = v.GetBool(cfgMultinetRestrict)
+	cfg.FallbackDelay = v.GetDuration(cfgMultinetFallbackDelay)
+	cfg.Subnets = make([]internalnet.Subnet, 0, 5)
+	cfg.EventHandler = internalnet.NewLogEventHandler(l)
+
+	for i := 0; ; i++ {
+		key := cfgMultinetSubnets + "." + strconv.Itoa(i) + "."
+		subnet := internalnet.Subnet{}
+
+		subnet.Prefix = v.GetString(key + "mask")
+		if subnet.Prefix == "" {
+			break
+		}
+		subnet.SourceIPs = v.GetStringSlice(key + "source_ips")
+		cfg.Subnets = append(cfg.Subnets, subnet)
+	}
+
+	return
+}
+
+func fetchTracingAttributes(v *viper.Viper) (map[string]string, error) {
+	attributes := make(map[string]string)
+	for i := 0; ; i++ {
+		key := cfgTracingAttributes + "." + strconv.Itoa(i) + "."
+		attrKey := v.GetString(key + "key")
+		attrValue := v.GetString(key + "value")
+		if attrKey == "" {
+			break
+		}
+
+		if _, ok := attributes[attrKey]; ok {
+			return nil, fmt.Errorf("tracing attribute key %s defined more than once", attrKey)
+		}
+
+		if attrValue == "" {
+			return nil, fmt.Errorf("empty tracing attribute value for key %s", attrKey)
+		}
+
+		attributes[attrKey] = attrValue
+	}
+
+	return attributes, nil
+}

config/config.env

@@ -14,8 +14,12 @@ HTTP_GW_PPROF_ADDRESS=localhost:8083
 HTTP_GW_PROMETHEUS_ENABLED=true
 HTTP_GW_PROMETHEUS_ADDRESS=localhost:8084
 
-# Log level.
+# Logger.
 HTTP_GW_LOGGER_LEVEL=debug
+HTTP_GW_LOGGER_SAMPLING_ENABLED=false
+HTTP_GW_LOGGER_SAMPLING_INITIAL=100
+HTTP_GW_LOGGER_SAMPLING_THEREAFTER=100
+HTTP_GW_LOGGER_SAMPLING_INTERVAL=1s
 
 HTTP_GW_SERVER_0_ADDRESS=0.0.0.0:443
 HTTP_GW_SERVER_0_TLS_ENABLED=false
@@ -26,6 +30,9 @@ HTTP_GW_SERVER_1_TLS_ENABLED=true
 HTTP_GW_SERVER_1_TLS_CERT_FILE=/path/to/tls/cert
 HTTP_GW_SERVER_1_TLS_KEY_FILE=/path/to/tls/key
 
+# How often to reconnect to the servers
+HTTP_GW_RECONNECT_INTERVAL: 1m
+
 # Nodes configuration.
 # This configuration make the gateway use the first node (grpc://s01.frostfs.devenv:8080)
 # while it's healthy. Otherwise, the gateway use the second node (grpc://s01.frostfs.devenv:8080)
@@ -92,3 +99,66 @@ HTTP_GW_POOL_ERROR_THRESHOLD=100
 
 # Enable zip compression to download files by common prefix.
 HTTP_GW_ZIP_COMPRESSION=false
+
+HTTP_GW_TRACING_ENABLED=true
+HTTP_GW_TRACING_ENDPOINT="localhost:4317"
+HTTP_GW_TRACING_EXPORTER="otlp_grpc"
+HTTP_GW_TRACING_TRUSTED_CA=""
+HTTP_GW_TRACING_ATTRIBUTES_0_KEY=key0
+HTTP_GW_TRACING_ATTRIBUTES_0_VALUE=value
+HTTP_GW_TRACING_ATTRIBUTES_1_KEY=key1
+HTTP_GW_TRACING_ATTRIBUTES_1_VALUE=value
+
+HTTP_GW_RUNTIME_SOFT_MEMORY_LIMIT=1073741824
+
+# Parameters of requests to FrostFS
+# This flag enables client side object preparing.
+HTTP_GW_FROSTFS_CLIENT_CUT=false
+# Sets max buffer size for read payload in put operations.
+HTTP_GW_FROSTFS_BUFFER_MAX_SIZE_FOR_PUT=1048576
+
+# Caching
+# Cache which contains mapping of bucket name to bucket info
+HTTP_GW_CACHE_BUCKETS_LIFETIME=1m
+HTTP_GW_CACHE_BUCKETS_SIZE=1000
+
+# Header to determine zone to resolve bucket name
+HTTP_GW_RESOLVE_BUCKET_NAMESPACE_HEADER=X-Frostfs-Namespace
+# Namespaces that should be handled as default
+HTTP_GW_RESOLVE_BUCKET_DEFAULT_NAMESPACES="" "root"
+
+# Max attempt to make successful tree request.
+# default value is 0 that means the number of attempts equals to number of nodes in pool.
+HTTP_GW_FROSTFS_TREE_POOL_MAX_ATTEMPTS=0
+
+HTTP_GW_CORS_ALLOW_ORIGIN="*"
+HTTP_GW_CORS_ALLOW_METHODS="GET" "POST"
+HTTP_GW_CORS_ALLOW_HEADERS="*"
+HTTP_GW_CORS_EXPOSE_HEADERS="*"
+HTTP_GW_CORS_ALLOW_CREDENTIALS=false
+HTTP_GW_CORS_MAX_AGE=600
+
+# Multinet properties
+# Enable multinet support
+HTTP_GW_MULTINET_ENABLED=false
+# Strategy to pick source IP address
+HTTP_GW_MULTINET_BALANCER=roundrobin
+# Restrict requests with unknown destination subnet
+HTTP_GW_MULTINET_RESTRICT=false
+# Delay between ipv6 to ipv4 fallback switch
+HTTP_GW_MULTINET_FALLBACK_DELAY=300ms
+# List of subnets and IP addresses to use as source for those subnets
+HTTP_GW_MULTINET_SUBNETS_1_MASK=1.2.3.4/24
+HTTP_GW_MULTINET_SUBNETS_1_SOURCE_IPS=1.2.3.4 1.2.3.5
+
+# Number of workers in handler's worker pool
+HTTP_GW_WORKER_POOL_SIZE=1000
+
+# Index page
+# Enable index page support
+HTTP_GW_INDEX_PAGE_ENABLED=false
+# Index page template path
+HTTP_GW_INDEX_PAGE_TEMPLATE_PATH=internal/handler/templates/index.gotmpl
+
+# Enable using fallback path to search for a object by attribute
+HTTP_GW_FEATURES_ENABLE_FILEPATH_FALLBACK=false

config/config.yaml

@@ -10,8 +10,25 @@ prometheus:
   enabled: false # Enable metrics.
   address: localhost:8084
 
+tracing:
+  enabled: true
+  exporter: "otlp_grpc"
+  endpoint: "localhost:4317"
+  trusted_ca: ""
+  attributes:
+    - key: key0
+      value: value
+    - key: key1
+      value: value
+
 logger:
   level: debug # Log level.
+  destination: stdout
+  sampling:
+    enabled: false
+    initial: 100
+    thereafter: 100
+    interval: 1s
 
 server:
   - address: 0.0.0.0:8080
@@ -50,6 +67,7 @@ peers:
     priority: 2
     weight: 9
 
+reconnect_interval: 1m
 
 web:
   # Per-connection buffer size for requests' reading.
@@ -95,5 +113,66 @@ request_timeout: 5s # Timeout to check node health during rebalance.
 rebalance_timer: 30s # Interval to check nodes health.
 pool_error_threshold: 100 # The number of errors on connection after which node is considered as unhealthy.
 
+# Number of workers in handler's worker pool
+worker_pool_size: 1000
+
+# Enable index page to see objects list for specified container and prefix
+index_page:
+  enabled: false
+  template_path: internal/handler/templates/index.gotmpl
+
 zip:
   compression: false # Enable zip compression to download files by common prefix.
+
+runtime:
+  soft_memory_limit: 1gb
+
+# Parameters of requests to FrostFS
+frostfs:
+  # This flag enables client side object preparing.
+  client_cut: false
+  # Sets max buffer size for read payload in put operations.
+  buffer_max_size_for_put: 1048576
+  # Max attempt to make successful tree request.
+  # default value is 0 that means the number of attempts equals to number of nodes in pool.
+  tree_pool_max_attempts: 0
+
+# Caching
+cache:
+  # Cache which contains mapping of bucket name to bucket info
+  buckets:
+    lifetime: 1m
+    size: 1000
+
+resolve_bucket:
+  namespace_header: X-Frostfs-Namespace
+  default_namespaces: [ "", "root" ]
+
+cors:
+  allow_origin: ""
+  allow_methods: []
+  allow_headers: []
+  expose_headers: []
+  allow_credentials: false
+  max_age: 600
+
+# Multinet properties
+multinet:
+  # Enable multinet support
+  enabled: false
+  # Strategy to pick source IP address
+  balancer: roundrobin
+  # Restrict requests with unknown destination subnet
+  restrict: false
+  # Delay between ipv6 to ipv4 fallback switch
+  fallback_delay: 300ms
+  # List of subnets and IP addresses to use as source for those subnets
+  subnets:
+    - mask: 1.2.3.4/24
+      source_ips:
+        - 1.2.3.4
+        - 1.2.3.5
+
+features:
+  # Enable using fallback path to search for a object by attribute
+  enable_filepath_fallback: false

debian/control

@@ -12,4 +12,3 @@ Package: frostfs-http-gw
 Architecture: any
 Depends: ${misc:Depends}
 Description: FrostFS HTTP Gateway bridges FrostFS internal protocol and HTTP standard.
-

debian/copyright

@@ -14,12 +14,12 @@ License: GPL-3
  This program is free software: you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published
  by the Free Software Foundation; version 3.
- 
+
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.
- 
+
  You should have received a copy of the GNU General Public License
- along with this program or at /usr/share/common-licenses/GPL-3.  
- If not, see <http://www.gnu.org/licenses/>. 
+ along with this program or at /usr/share/common-licenses/GPL-3.
+ If not, see <http://www.gnu.org/licenses/>.

debian/frostfs-http-gw.postinst

@@ -21,7 +21,7 @@ set -e
 case "$1" in
     configure)
         USERNAME=http
-        id -u frostfs-$USERNAME >/dev/null 2>&1 || useradd -s /usr/sbin/nologin -d /srv/frostfs_cache --system -M -U -c "FrostFS HTTP gateway" frostfs-$USERNAME
+        id -u frostfs-$USERNAME >/dev/null 2>&1 || useradd -s /usr/sbin/nologin -d /var/lib/frostfs/$USERNAME --system -m -U -c "FrostFS HTTP gateway" frostfs-$USERNAME
         if ! dpkg-statoverride --list /etc/frostfs/$USERNAME >/dev/null; then
             chown -f root:frostfs-$USERNAME /etc/frostfs/$USERNAME
             chown -f root:frostfs-$USERNAME /etc/frostfs/$USERNAME/config.yaml || true
@@ -29,8 +29,8 @@ case "$1" in
             chmod -f 0640 /etc/frostfs/$USERNAME/config.yaml || true
         fi
         USERDIR=$(getent passwd "frostfs-$USERNAME" | cut -d: -f6)
-        if ! dpkg-statoverride --list frostfs-$USERDIR >/dev/null; then
-            chown -f frostfs-$USERNAME: $USERDIR
+        if ! dpkg-statoverride --list "$USERDIR" >/dev/null; then
+            chown -f frostfs-$USERNAME: "$USERDIR"
         fi
     ;;
 

debian/rules

@@ -8,9 +8,7 @@ SERVICE = frostfs-http-gw
 	dh $@
 
 override_dh_installsystemd:
-		dh_installsystemd --no-enable --no-start $(SERVICE).service		
+		dh_installsystemd --no-enable --no-start $(SERVICE).service
 
 override_dh_installchangelogs:
-		dh_installchangelogs -k CHANGELOG.md		
-		
-
+		dh_installchangelogs -k CHANGELOG.md

docs/api.md

@@ -8,7 +8,7 @@
 | `/zip/{cid}/{prefix}`                           | [Download objects in archive](#download-zip) |
 
 **Note:** `cid` parameter can be base58 encoded container ID or container name
-(the name must be registered in NNS, see appropriate section in [README](../README.md#nns)).
+(the name must be registered in NNS, see appropriate section in [nns.md](./nns.md)).
 
 Route parameters can be:
 
@@ -18,7 +18,7 @@ Route parameters can be:
 
 ### Bearer token
 
-All routes can accept [bearer token](../README.md#authentication) from:
+All routes can accept [bearer token](./authentication.md) from:
 
 * `Authorization` header with `Bearer` type and base64-encoded token in
   credentials field
@@ -56,21 +56,21 @@ Upload file as object with attributes to FrostFS.
 
 ###### Headers
 
-| Header                | Description                                                                                                                                       |
-|-----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|
-| Common headers        | See [bearer token](#bearer-token).                                                                                                                |
-| `X-Attribute-Neofs-*` | Used to set system NeoFS object attributes <br/> (e.g. use "X-Attribute-Neofs-Expiration-Epoch" to set `__NEOFS__EXPIRATION_EPOCH` attribute).    |
-| `X-Attribute-*`       | Used to set regular object attributes <br/> (e.g. use "X-Attribute-My-Tag" to set `My-Tag` attribute).                                            |
-| `Date`                | This header is used to calculate the right `__NEOFS__EXPIRATION` attribute for object. If the header is missing, the current server time is used. |
+| Header                 | Description                                                                                                                                        |
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------|
+| Common headers         | See [bearer token](#bearer-token).                                                                                                                 |
+| `X-Attribute-System-*` | Used to set system FrostFS object attributes <br/> (e.g. use "X-Attribute-System-Expiration-Epoch" to set `__SYSTEM__EXPIRATION_EPOCH` attribute). |
+| `X-Attribute-*`        | Used to set regular object attributes <br/> (e.g. use "X-Attribute-My-Tag" to set `My-Tag` attribute).                                             |
+| `Date`                 | This header is used to calculate the right `__SYSTEM__EXPIRATION` attribute for object. If the header is missing, the current server time is used. |
 
-There are some reserved headers type of `X-Attribute-NEOFS-*` (headers are arranged in descending order of priority):
+There are some reserved headers type of `X-Attribute-FROSTFS-*` (headers are arranged in descending order of priority):
 
-1. `X-Attribute-Neofs-Expiration-Epoch: 100`
-2. `X-Attribute-Neofs-Expiration-Duration: 24h30m`
-3. `X-Attribute-Neofs-Expiration-Timestamp: 1637574797`
-4. `X-Attribute-Neofs-Expiration-RFC3339: 2021-11-22T09:55:49Z`
+1. `X-Attribute-System-Expiration-Epoch: 100`
+2. `X-Attribute-System-Expiration-Duration: 24h30m`
+3. `X-Attribute-System-Expiration-Timestamp: 1637574797`
+4. `X-Attribute-System-Expiration-RFC3339: 2021-11-22T09:55:49Z`
 
-which transforms to `X-Attribute-Neofs-Expiration-Epoch`. So you can provide expiration any convenient way.
+which transforms to `X-Attribute-System-Expiration-Epoch`. So you can provide expiration any convenient way.
 
 If you don't specify the `X-Attribute-Timestamp` header the `Timestamp` attribute can be set anyway
 (see http-gw [configuration](gate-configuration.md#upload-header-section)).
@@ -95,12 +95,12 @@ The `filename` field from the multipart form will be set as `FileName` attribute
 
 ## Get object
 
-Route: `/get/{cid}/{oid}?[download=true]`
+Route: `/get/{cid}/{oid}?[download=false]`
 
 | Route parameter | Type   | Description                                                                                                                                                |
 |-----------------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `cid`           | Single | Base58 encoded container ID or container name from NNS.                                                                                                    |
-| `oid`           | Single | Base58 encoded object ID.                                                                                                                                  |
+| `cid`           | Single | Base58 encoded `container ID` or `container name` from NNS or `bucket name`.                                                                               |
+| `oid`           | Single | Base58 encoded `object ID`. Also could be `S3 object name` if `cid` is specified as bucket name.                                                           |
 | `download`      | Query  | Set the `Content-Disposition` header as `attachment` in response.<br/> This make the browser to download object as file instead of showing it on the page. |
 
 ### Methods
@@ -121,17 +121,17 @@ Get an object (payload and attributes) by an address.
 
 ###### Headers
 
-| Header                | Description                                                                                                                                  |
-|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header).                     |
-| `X-Attribute-*`       | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
-| `Content-Disposition` | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
-| `Content-Type`        | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
-| `Content-Length`      | Size of object payload.                                                                                                                      |
-| `Last-Modified`       | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                                     |
-| `X-Owner-Id`          | Base58 encoded owner ID.                                                                                                                     |
-| `X-Container-Id`      | Base58 encoded container ID.                                                                                                                 |
-| `X-Object-Id`         | Base58 encoded object ID.                                                                                                                    |
+| Header                 | Description                                                                                                                                  |
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header).                 |
+| `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
+| `Content-Disposition`  | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
+| `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
+| `Content-Length`       | Size of object payload.                                                                                                                      |
+| `Last-Modified`        | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                                     |
+| `X-Owner-Id`           | Base58 encoded owner ID.                                                                                                                     |
+| `X-Container-Id`       | Base58 encoded container ID.                                                                                                                 |
+| `X-Object-Id`          | Base58 encoded object ID.                                                                                                                    |
 
 ###### Status codes
 
@@ -141,6 +141,13 @@ Get an object (payload and attributes) by an address.
 | 400    | Some error occurred during object downloading. |
 | 404    | Container or object not found.                 |
 
+###### Body
+
+Returns object data. If request performed from browser, either displays raw data or downloads it as
+attachment if `download` query parameter is set to `true`.
+If `index_page.enabled` is set to `true`, returns HTML with index-page if no object with specified
+S3-name was found.
+
 #### HEAD
 
 Get an object attributes by an address.
@@ -157,16 +164,16 @@ Get an object attributes by an address.
 
 ###### Headers
 
-| Header                | Description                                                                                                              |
-|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header). |
-| `X-Attribute-*`       | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                         |
-| `Content-Type`        | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                            |
-| `Content-Length`      | Size of object payload.                                                                                                  |
-| `Last-Modified`       | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                 |
-| `X-Owner-Id`          | Base58 encoded owner ID.                                                                                                 |
-| `X-Container-Id`      | Base58 encoded container ID.                                                                                             |
-| `X-Object-Id`         | Base58 encoded object ID.                                                                                                |
+| Header                 | Description                                                                                                                  |
+|------------------------|------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header). |
+| `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                             |
+| `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                |
+| `Content-Length`       | Size of object payload.                                                                                                      |
+| `Last-Modified`        | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                     |
+| `X-Owner-Id`           | Base58 encoded owner ID.                                                                                                     |
+| `X-Container-Id`       | Base58 encoded container ID.                                                                                                 |
+| `X-Object-Id`          | Base58 encoded object ID.                                                                                                    |
 
 ###### Status codes
 
@@ -206,17 +213,17 @@ If more than one object is found, an arbitrary one will be returned.
 
 ###### Headers
 
-| Header                | Description                                                                                                                                  |
-|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header).                     |
-| `X-Attribute-*`       | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
-| `Content-Disposition` | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
-| `Content-Type`        | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
-| `Content-Length`      | Size of object payload.                                                                                                                      |
-| `Last-Modified`       | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                                     |
-| `X-Owner-Id`          | Base58 encoded owner ID.                                                                                                                     |
-| `X-Container-Id`      | Base58 encoded container ID.                                                                                                                 |
-| `X-Object-Id`         | Base58 encoded object ID.                                                                                                                    |
+| Header                 | Description                                                                                                                                  |
+|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header).                 |
+| `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                                             |
+| `Content-Disposition`  | Indicate how to browsers should treat file. <br/> Set `filename` as base part of `FileName` object attribute (if it's set, empty otherwise). |
+| `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                                |
+| `Content-Length`       | Size of object payload.                                                                                                                      |
+| `Last-Modified`        | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                                     |
+| `X-Owner-Id`           | Base58 encoded owner ID.                                                                                                                     |
+| `X-Container-Id`       | Base58 encoded container ID.                                                                                                                 |
+| `X-Object-Id`          | Base58 encoded object ID.                                                                                                                    |
 
 ###### Status codes
 
@@ -243,16 +250,16 @@ If more than one object is found, an arbitrary one will be used to get attribute
 
 ###### Headers
 
-| Header                | Description                                                                                                              |
-|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
-| `X-Attribute-Neofs-*` | System NeoFS object attributes <br/> (e.g. `__NEOFS__EXPIRATION_EPOCH` set "X-Attribute-Neofs-Expiration-Epoch" header). |
-| `X-Attribute-*`       | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                         |
-| `Content-Type`        | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                            |
-| `Content-Length`      | Size of object payload.                                                                                                  |
-| `Last-Modified`       | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                 |
-| `X-Owner-Id`          | Base58 encoded owner ID.                                                                                                 |
-| `X-Container-Id`      | Base58 encoded container ID.                                                                                             |
-| `X-Object-Id`         | Base58 encoded object ID.                                                                                                |
+| Header                 | Description                                                                                                                  |
+|------------------------|------------------------------------------------------------------------------------------------------------------------------|
+| `X-Attribute-System-*` | System FrostFS object attributes <br/> (e.g. `__SYSTEM__EXPIRATION_EPOCH` set "X-Attribute-System-Expiration-Epoch" header). |
+| `X-Attribute-*`        | Regular object attributes <br/> (e.g. `My-Tag` set "X-Attribute-My-Tag" header).                                             |
+| `Content-Type`         | Indicate content type of object. Set from `Content-Type` attribute or detected using payload.                                |
+| `Content-Length`       | Size of object payload.                                                                                                      |
+| `Last-Modified`        | Contains the `Timestamp` attribute (if exists) formatted as HTTP time (RFC7231,RFC1123).                                     |
+| `X-Owner-Id`           | Base58 encoded owner ID.                                                                                                     |
+| `X-Container-Id`       | Base58 encoded container ID.                                                                                                 |
+| `X-Object-Id`          | Base58 encoded object ID.                                                                                                    |
 
 ###### Status codes
 

docs/authentication.md

@@ -0,0 +1,108 @@
+# Request authentication
+
+HTTP Gateway does not authorize requests. Gateway converts HTTP request to a 
+FrostFS request and signs it with its own private key. 
+
+You can always upload files to public containers (open for anyone to put
+objects into), but for restricted containers you need to explicitly allow PUT
+operations for a request signed with your HTTP Gateway keys.
+
+If you don't want to manage gateway's secret keys and adjust policies when
+gateway configuration changes (new gate, key rotation, etc) or you plan to use
+public services, there is an option to let your application backend (or you) to
+issue Bearer Tokens and pass them from the client via gate down to FrostFS level
+to grant access.
+
+FrostFS Bearer Token basically is a container owner-signed policy (refer to FrostFS
+documentation for more details). There are two options to pass them to gateway:
+* "Authorization" header with "Bearer" type and base64-encoded token in
+  credentials field
+* "Bearer" cookie with base64-encoded token contents
+
+For example, you have a mobile application frontend with a backend part storing
+data in FrostFS. When a user authorizes in the mobile app, the backend issues a FrostFS
+Bearer token and provides it to the frontend. Then, the mobile app may generate
+some data and upload it via any available FrostFS HTTP Gateway by adding
+the corresponding header to the upload request. Accessing policy protected data
+works the same way.
+
+##### Example
+In order to generate a bearer token, you need to have wallet (which will be used to sign the token)
+
+1. Suppose you have a container with private policy for wallet key
+
+```
+$ frostfs-cli container create -r <endpoint> --wallet <wallet> -policy <policy> --basic-acl 0 --await
+CID: 9dfzyvq82JnFqp5svxcREf2iy6XNuifYcJPusEDnGK9Z
+
+$ frostfs-cli ape-manager add -r <endpoint> --wallet <wallet> \
+  --target-type container --target-name 9dfzyvq82JnFqp5svxcREf2iy6XNuifYcJPusEDnGK9Z \
+  --rule "allow Object.* RequestCondition:"\$Actor:publicKey"=03b09baabff3f6107c7e9acb8721a6fc5618d45b50247a314d82e548702cce8cd5 *" \
+  --chain-id <chainID>
+```
+
+
+2. Form a Bearer token (10000 is lifetime expiration in epoch) to impersonate
+   HTTP Gateway request as wallet signed request and save it to **bearer.json**:
+```
+{
+    "body": {
+        "allowImpersonate": true,
+        "lifetime": {
+            "exp": "10000",
+            "nbf": "0",
+            "iat": "0"
+        }
+    },
+    "signature": null
+}
+```
+
+3. Sign it with the wallet:
+```
+$ frostfs-cli util sign bearer-token --from bearer.json --to signed.json -w <wallet>
+```
+
+4. Encode to base64 to use in header:
+```
+$ base64 -w 0 signed.json
+# output: Ck4KKgoECAIQBhIiCiCZGdlbN7DPGPMg9rsWqV+p2XdMzUqknRiexewSFp8kmBIbChk17MUri6OJ0X5ftsHzy7NERDNFB4C92PcaGgMIkE4SZgohAxpsb7vfAso1F0X6hrm6WpRS14WsT3/Ct1SMoqRsT89KEkEEGxKi8GjKSf52YqhppgaOTQHbUsL3jn7SHLqS3ndAQ7NtAATnmRHleZw2V2xRRSRBQdjDC05KK83LhdSax72Fsw==
+```
+
+After that, the Bearer token can be used:
+
+```
+$ curl -F 'file=@cat.jpeg;filename=cat.jpeg' -H "Authorization: Bearer Ck4KKgoECAIQBhIiCiCZGdlbN7DPGPMg9rsWqV+p2XdMzUqknRiexewSFp8kmBIbChk17MUri6OJ0X5ftsHzy7NERDNFB4C92PcaGgMIkE4SZgohAxpsb7vfAso1F0X6hrm6WpRS14WsT3/Ct1SMoqRsT89KEkEEGxKi8GjKSf52YqhppgaOTQHbUsL3jn7SHLqS3ndAQ7NtAATnmRHleZw2V2xRRSRBQdjDC05KK83LhdSax72Fsw==" \
+  http://localhost:8082/upload/BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K
+# output:
+# {
+#	"object_id": "DhfES9nVrFksxGDD2jQLunGADfrXExxNwqXbDafyBn9X",
+#	"container_id": "BJeErH9MWmf52VsR1mLWKkgF3pRm3FkubYxM7TZkBP4K"
+# }
+```
+
+##### Note: Bearer Token owner
+
+You can specify exact key who can use Bearer Token (gateway wallet address).
+To do this, encode wallet address in base64 format
+
+```
+$ echo 'NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3' | base58 --decode | base64
+# output: NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg==
+```
+
+Then specify this value in Bearer Token Json
+```
+{
+    "body": {
+        "ownerID": {
+            "value": "NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg=="
+        },
+        ...
+```
+
+##### Note: Policy override
+
+Instead of impersonation, you can define the set of policies that will be applied
+to the request sender. This allows to restrict access to specific operation and
+specific objects without giving full impersonation control to the token user.

docs/gate-configuration.md

@@ -40,19 +40,26 @@ $ cat http.log
 
 # Structure
 
-| Section         | Description                                           |
-|-----------------|-------------------------------------------------------|
-| no section      | [General parameters](#general-section)                |
-| `wallet`        | [Wallet configuration](#wallet-section)               |
-| `peers`         | [Nodes configuration](#peers-section)                 |
-| `logger`        | [Logger configuration](#logger-section)               |
-| `web`           | [Web configuration](#web-section)                     |
-| `server`        | [Server configuration](#server-section)               |
-| `upload-header` | [Upload header configuration](#upload-header-section) |
-| `zip`           | [ZIP configuration](#zip-section)                     |
-| `pprof`         | [Pprof configuration](#pprof-section)                 |
-| `prometheus`    | [Prometheus configuration](#prometheus-section)       |
-
+| Section          | Description                                                    |
+|------------------|----------------------------------------------------------------|
+| no section       | [General parameters](#general-section)                         |
+| `wallet`         | [Wallet configuration](#wallet-section)                        |
+| `peers`          | [Nodes configuration](#peers-section)                          |
+| `logger`         | [Logger configuration](#logger-section)                        |
+| `web`            | [Web configuration](#web-section)                              |
+| `server`         | [Server configuration](#server-section)                        |
+| `upload-header`  | [Upload header configuration](#upload-header-section)          |
+| `zip`            | [ZIP configuration](#zip-section)                              |
+| `pprof`          | [Pprof configuration](#pprof-section)                          |
+| `prometheus`     | [Prometheus configuration](#prometheus-section)                |
+| `tracing`        | [Tracing configuration](#tracing-section)                      |
+| `runtime`        | [Runtime configuration](#runtime-section)                      |
+| `frostfs`        | [Frostfs configuration](#frostfs-section)                      |
+| `cache`          | [Cache configuration](#cache-section)                          |
+| `resolve_bucket` | [Bucket name resolving configuration](#resolve_bucket-section) |
+| `index_page`     | [Index page configuration](#index_page-section)                |
+| `multinet`       | [Multinet configuration](#multinet-section)                    |
+| `features`       | [Features configuration](#features-section)                    |
 
 # General section
 
@@ -62,29 +69,34 @@ resolve_order:
   - nns
   - dns
 
-connect_timeout: 5s 
+connect_timeout: 5s
 stream_timeout: 10s
-request_timeout: 5s 
+request_timeout: 5s
 rebalance_timer: 30s
 pool_error_threshold: 100
+reconnect_interval: 1m
+worker_pool_size: 1000
+
 ```
 
-| Parameter              | Type       | SIGHUP reload | Default value  | Description                                                                        |
-|------------------------|------------|---------------|----------------|------------------------------------------------------------------------------------|
-| `rpc_endpoint`         | `string`   | yes           |                | The address of the RPC host to which the gateway connects to resolve bucket names. |
-| `resolve_order`        | `[]string` | yes           | `[nns, dns]`   | Order of bucket name resolvers to use.                                             |
-| `connect_timeout`      | `duration` |               | `10s`          | Timeout to connect to a node.                                                      |
-| `stream_timeout`       | `duration` |               | `10s`          | Timeout for individual operations in streaming RPC.                                |
-| `request_timeout`      | `duration` |               | `15s`          | Timeout to check node health during rebalance.                                     |
-| `rebalance_timer`      | `duration` |               | `60s`          | Interval to check node health.                                                     |
-| `pool_error_threshold` | `uint32`   |               | `100`          | The number of errors on connection after which node is considered as unhealthy.    |
+| Parameter              | Type       | SIGHUP reload | Default value | Description                                                                        |
+|------------------------|------------|---------------|---------------|------------------------------------------------------------------------------------|
+| `rpc_endpoint`         | `string`   | yes           |               | The address of the RPC host to which the gateway connects to resolve bucket names. |
+| `resolve_order`        | `[]string` | yes           | `[nns, dns]`  | Order of bucket name resolvers to use.                                             |
+| `connect_timeout`      | `duration` |               | `10s`         | Timeout to connect to a node.                                                      |
+| `stream_timeout`       | `duration` |               | `10s`         | Timeout for individual operations in streaming RPC.                                |
+| `request_timeout`      | `duration` |               | `15s`         | Timeout to check node health during rebalance.                                     |
+| `rebalance_timer`      | `duration` |               | `60s`         | Interval to check node health.                                                     |
+| `pool_error_threshold` | `uint32`   |               | `100`         | The number of errors on connection after which node is considered as unhealthy.    |
+| `reconnect_interval`   | `duration` | no            | `1m`          | Listeners reconnection interval.                                                   |
+| `worker_pool_size`     | `int`      | no            | `1000`        | Maximum worker count in handler's worker pool.                                     |
 
 # `wallet` section
 
 ```yaml
 wallet:
-  path: /path/to/wallet.json 
-  address: NfgHwwTi3wHAS8aFAN243C5vGbkYDpqLHP 
+  path: /path/to/wallet.json
+  address: NfgHwwTi3wHAS8aFAN243C5vGbkYDpqLHP
   passphrase: pwd
 ```
 
@@ -156,12 +168,22 @@ server:
 ```yaml
 logger:
   level: debug
+  destination: stdout
+  sampling:
+    enabled: false
+    initial: 100
+    thereafter: 100
+    interval: 1s
 ```
 
-| Parameter | Type     | SIGHUP reload | Default value | Description                                                                                        |
-|-----------|----------|---------------|---------------|----------------------------------------------------------------------------------------------------|
-| `level`   | `string` | yes           | `debug`       | Logging level.<br/>Possible values:  `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. |
-
+| Parameter             | Type       | SIGHUP reload | Default value | Description                                                                                        |
+|-----------------------|------------|---------------|---------------|----------------------------------------------------------------------------------------------------|
+| `level`               | `string`   | yes           | `debug`       | Logging level.<br/>Possible values:  `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. |
+| `destination`         | `string`   | no            | `stdout`      | Destination for logger: `stdout` or `journald`                                                     |
+| `sampling.enabled`    | `bool`     | no            | false         | Sampling enabling flag.                                                                            |
+| `sampling.initial`    | `int`      | no            | '100'         | Sampling count of first log entries.                                                               |
+| `sampling.thereafter` | `int`      | no            | '100'         | Sampling count of entries after an `interval`.                                                     |
+| `sampling.interval`   | `duration` | no            | '1s'          | Sampling interval of messaging similar entries.                                                    |
 
 # `web` section
 
@@ -201,7 +223,7 @@ upload_header:
 
 ```yaml
 zip:
-  compression: false 
+  compression: false
 ```
 
 | Parameter     | Type   | SIGHUP reload | Default value | Description                                                  |
@@ -238,3 +260,213 @@ prometheus:
 |-----------|----------|---------------|------------------|-----------------------------------------|
 | `enabled` | `bool`   | yes           | `false`          | Flag to enable the service.             |
 | `address` | `string` | yes           | `localhost:8084` | Address that service listener binds to. |
+
+# `tracing` section
+
+Contains configuration for the `tracing` service.
+
+```yaml
+tracing:
+  enabled: true
+  exporter: "otlp_grpc"
+  endpoint: "localhost:4317"
+  trusted_ca: "/etc/ssl/telemetry-trusted-ca.pem"
+  attributes:
+    - key: key0
+      value: value
+    - key: key1
+      value: value
+```
+
+| Parameter    | Type                                   | SIGHUP reload | Default value | Description                                                                                                                     |
+| ------------ | -------------------------------------- | ------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------- |
+| `enabled`    | `bool`                                 | yes           | `false`       | Flag to enable the tracing.                                                                                                     |
+| `exporter`   | `string`                               | yes           |               | Trace collector type (`stdout` or `otlp_grpc` are supported).                                                                   |
+| `endpoint`   | `string`                               | yes           |               | Address of collector endpoint for OTLP exporters.                                                                               |
+| `trusted_ca` | `string`                               | yes           |               | Path to certificate of a certification authority in pem format, that issued the TLS certificate of the telemetry remote server. |
+| `attributes` | [[]Attributes](#attributes-subsection) | yes           |               | An array of configurable attributes in key-value format.                                                                        |
+
+
+#### `attributes` subsection
+
+```yaml
+  attributes:
+    - key: key0
+      value: value
+    - key: key1
+      value: value
+```
+
+| Parameter             | Type     | SIGHUP reload | Default value | Description                                              |
+|-----------------------|----------|---------------|---------------|----------------------------------------------------------|
+| `key`                 | `string` | yes           |               | Attribute key.                                           |
+| `value`               | `string` | yes           |               | Attribute value.                                         |
+
+# `runtime` section
+Contains runtime parameters.
+
+```yaml
+runtime:
+  soft_memory_limit: 1gb
+```
+
+| Parameter           | Type   | SIGHUP reload | Default value | Description                                                                                                                                                                  |
+|---------------------|--------|---------------|---------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `soft_memory_limit` | `size` | yes           | maxint64      | Soft memory limit for the runtime. Zero or no value stands for no limit. If `GOMEMLIMIT` environment variable is set, the value from the configuration file will be ignored. |
+
+# `frostfs` section
+
+Contains parameters of requests to FrostFS.
+
+```yaml
+frostfs:
+  client_cut: false
+  buffer_max_size_for_put: 1048576 # 1mb
+  tree_pool_max_attempts: 0
+```
+
+| Parameter                 | Type     | SIGHUP reload | Default value | Description                                                                                                               |
+|---------------------------|----------|---------------|---------------|---------------------------------------------------------------------------------------------------------------------------|
+| `client_cut`              | `bool`   | yes           | `false`       | This flag enables client side object preparing.                                                                           |
+| `buffer_max_size_for_put` | `uint64` | yes           | `1048576`     | Sets max buffer size for read payload in put operations.                                                                  |
+| `tree_pool_max_attempts`  | `uint32` | no            | `0`           | Sets max attempt to make successful tree request. Value 0 means the number of attempts equals to number of nodes in pool. |
+
+
+### `cache` section
+
+```yaml
+cache:
+  buckets:
+    lifetime: 1m
+    size: 1000
+
+```
+
+| Parameter       | Type                              | Default value                     | Description                                                                            |
+|-----------------|-----------------------------------|-----------------------------------|----------------------------------------------------------------------------------------|
+| `buckets`       | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 1000`   | Cache which contains mapping of bucket name to bucket info.                            |
+
+
+#### `cache` subsection
+
+```yaml
+lifetime: 1m
+size: 1000
+```
+
+| Parameter  | Type       | Default value    | Description                   |
+|------------|------------|------------------|-------------------------------|
+| `lifetime` | `duration` | depends on cache | Lifetime of entries in cache. |
+| `size`     | `int`      | depends on cache | LRU cache size.               |
+
+
+# `resolve_bucket` section
+
+Bucket name resolving parameters from and to container ID.
+
+```yaml
+resolve_bucket:
+  namespace_header: X-Frostfs-Namespace
+  default_namespaces: [ "", "root" ]
+```
+
+| Parameter            | Type       | SIGHUP reload | Default value         | Description                                                                                                              |
+|----------------------|------------|---------------|-----------------------|--------------------------------------------------------------------------------------------------------------------------|
+| `namespace_header`   | `string`   | yes           | `X-Frostfs-Namespace` | Header to determine zone to resolve bucket name.                                                                         |
+| `default_namespaces` | `[]string` | yes           | ["","root"]           | Namespaces that should be handled as default.                                                                            |
+
+# `index_page` section
+
+Parameters for index HTML-page output. Activates if `GetObject` request returns `not found`. Two
+index page modes available:
+
+* `s3` mode uses tree service for listing objects,
+* `native` sends requests to nodes via native protocol.
+  If request pass S3-bucket name instead of CID, `s3` mode will be used, otherwise `native`.
+
+```yaml
+index_page:
+  enabled: false
+  template_path: ""
+```
+
+| Parameter       | Type     | SIGHUP reload | Default value | Description                                                                     |
+|-----------------|----------|---------------|---------------|---------------------------------------------------------------------------------|
+| `enabled`       | `bool`   | yes           | `false`       | Flag to enable index_page return if no object with specified S3-name was found. |
+| `template_path` | `string` | yes           | `""`          | Path to .gotmpl file with html template for index_page.                         |
+
+# `cors` section
+
+Parameters for CORS (used in OPTIONS requests and responses in all handlers).
+If values are not set, headers will not be included to response.
+
+```yaml
+cors:
+  allow_origin: "*"
+  allow_methods: ["GET", "HEAD"]
+  allow_headers: ["Authorization"]
+  expose_headers: ["*"]
+  allow_credentials: false
+  max_age: 600
+```
+
+| Parameter           | Type       | SIGHUP reload | Default value | Description                                            |
+|---------------------|------------|---------------|---------------|--------------------------------------------------------|
+| `allow_origin`      | `string`   | yes           |               | Values for `Access-Control-Allow-Origin` headers.      |
+| `allow_methods`     | `[]string` | yes           |               | Values for `Access-Control-Allow-Methods` headers.     |
+| `allow_headers`     | `[]string` | yes           |               | Values for `Access-Control-Allow-Headers` headers.     |
+| `expose_headers`    | `[]string` | yes           |               | Values for `Access-Control-Expose-Headers` headers.    |
+| `allow_credentials` | `bool`     | yes           | `false`       | Values for `Access-Control-Allow-Credentials` headers. |
+| `max_age`           | `int`      | yes           | `600`         | Values for `Access-Control-Max-Age ` headers.          |
+
+# `multinet` section
+
+Configuration of multinet support.
+
+```yaml
+multinet:
+   enabled: false
+   balancer: roundrobin
+   restrict: false
+   fallback_delay: 300ms
+   subnets:
+      - mask: 1.2.3.4/24
+        source_ips:
+           - 1.2.3.4
+           - 1.2.3.5
+```
+
+| Parameter        | Type                           | SIGHUP reload | Default value | Description                                                                                |
+|------------------|--------------------------------|---------------|---------------|--------------------------------------------------------------------------------------------|
+| `enabled`        | `bool`                         | yes           | `false`       | Enables multinet setting to manage source ip of outcoming requests.                        |
+| `balancer`       | `string`                       | yes           | `""`          | Strategy to pick source IP. By default picks first address. Supports `roundrobin` setting. |
+| `restrict`       | `bool`                         | yes           | `false`       | Restricts requests to an undefined subnets.                                                |
+| `fallback_delay` | `duration`                     | yes           | `300ms`       | Delay between IPv6 and IPv4 fallback stack switch.                                         |
+| `subnets`        | [[]Subnet](#subnet-subsection) | yes           |               | Set of subnets to apply multinet dial settings.                                            |
+
+#### `subnet` subsection
+
+```yaml
+- mask: 1.2.3.4/24
+  source_ips:
+    - 1.2.3.4
+    - 1.2.3.5
+```
+
+| Parameter    | Type       | SIGHUP reload | Default value | Description                                                          |
+|--------------|------------|---------------|---------------|----------------------------------------------------------------------|
+| `mask`       | `string`   | yes           |               | Destination subnet.                                                  |
+| `source_ips` | `[]string` | yes           |               | Array of source IP addresses to use when dialing destination subnet. |
+
+# `features` section
+
+Contains parameters for enabling features.
+
+```yaml
+features:
+  enable_filepath_fallback: true
+```
+
+| Parameter                           | Type   | SIGHUP reload | Default value | Description                                                                                                                                                                                                                                                                              |
+| ----------------------------------- | ------ | ------------- | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `features.enable_filepath_fallback` | `bool` | yes           | `false`       | Enable using fallback path to search for a object by attribute. If the value of the `FilePath` attribute in the request contains no `/` symbols or single leading `/` symbol and the object was not found, then an attempt is made to search for the object by the attribute `FileName`. |

docs/nns.md

@@ -0,0 +1,36 @@
+# Nicename Resolving with NNS
+
+Steps to start using name resolving:
+
+1. Enable NNS resolving in config (`rpc_endpoint` must be a valid neo rpc node, see [configs](./config) for other examples):
+
+```yaml
+rpc_endpoint: http://morph-chain.frostfs.devenv:30333
+resolve_order:
+  - nns
+```
+
+2. Make sure your container is registered in NNS contract. If you use [frostfs-dev-env](https://git.frostfs.info/TrueCloudLab/frostfs-dev-env)
+   you can check if your container (e.g. with `container-name` name) is registered in NNS:
+
+```shell
+$ curl -s --data '{"id":1,"jsonrpc":"2.0","method":"getcontractstate","params":[1]}' \
+    http://morph-chain.frostfs.devenv:30333 | jq -r '.result.hash'
+
+0x8e6c3cd4b976b28e84a3788f6ea9e2676c15d667
+
+$ docker exec -it morph_chain neo-go \
+    contract testinvokefunction \
+    -r http://morph-chain.frostfs.devenv:30333 0x8e6c3cd4b976b28e84a3788f6ea9e2676c15d667 \
+    resolve string:container-name.container int:16 \
+    | jq -r '.stack[0].value | if type=="array" then .[0].value else . end' \
+    | base64 -d && echo
+
+7f3vvkw4iTiS5ZZbu5BQXEmJtETWbi3uUjLNaSs29xrL
+```
+
+3. Use container name instead of its `$CID`. For example:
+
+```shell
+$ curl http://localhost:8082/get_by_attribute/container-name/FileName/object-name
+```

downloader/download.go

@@ -1,534 +0,0 @@
-package downloader
-
-import (
-	"archive/zip"
-	"bufio"
-	"bytes"
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"path"
-	"strconv"
-	"strings"
-	"time"
-	"unicode"
-	"unicode/utf8"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
-	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
-	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/atomic"
-	"go.uber.org/zap"
-)
-
-type request struct {
-	*fasthttp.RequestCtx
-	appCtx context.Context
-	log    *zap.Logger
-}
-
-func isValidToken(s string) bool {
-	for _, c := range s {
-		if c <= ' ' || c > 127 {
-			return false
-		}
-		if strings.ContainsRune("()<>@,;:\\\"/[]?={}", c) {
-			return false
-		}
-	}
-	return true
-}
-
-func isValidValue(s string) bool {
-	for _, c := range s {
-		// HTTP specification allows for more technically, but we don't want to escape things.
-		if c < ' ' || c > 127 || c == '"' {
-			return false
-		}
-	}
-	return true
-}
-
-type readCloser struct {
-	io.Reader
-	io.Closer
-}
-
-// initializes io.Reader with the limited size and detects Content-Type from it.
-// Returns r's error directly. Also returns the processed data.
-func readContentType(maxSize uint64, rInit func(uint64) (io.Reader, error)) (string, []byte, error) {
-	if maxSize > sizeToDetectType {
-		maxSize = sizeToDetectType
-	}
-
-	buf := make([]byte, maxSize) // maybe sync-pool the slice?
-
-	r, err := rInit(maxSize)
-	if err != nil {
-		return "", nil, err
-	}
-
-	n, err := r.Read(buf)
-	if err != nil && err != io.EOF {
-		return "", nil, err
-	}
-
-	buf = buf[:n]
-
-	return http.DetectContentType(buf), buf, err // to not lose io.EOF
-}
-
-func (r request) receiveFile(clnt *pool.Pool, objectAddress oid.Address) {
-	var (
-		err      error
-		dis      = "inline"
-		start    = time.Now()
-		filename string
-	)
-	if err = tokens.StoreBearerToken(r.RequestCtx); err != nil {
-		r.log.Error("could not fetch and store bearer token", zap.Error(err))
-		response.Error(r.RequestCtx, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	var prm pool.PrmObjectGet
-	prm.SetAddress(objectAddress)
-	if btoken := bearerToken(r.RequestCtx); btoken != nil {
-		prm.UseBearer(*btoken)
-	}
-
-	rObj, err := clnt.GetObject(r.appCtx, prm)
-	if err != nil {
-		r.handleFrostFSErr(err, start)
-		return
-	}
-
-	// we can't close reader in this function, so how to do it?
-
-	if r.Request.URI().QueryArgs().GetBool("download") {
-		dis = "attachment"
-	}
-
-	payloadSize := rObj.Header.PayloadSize()
-
-	r.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(payloadSize, 10))
-	var contentType string
-	for _, attr := range rObj.Header.Attributes() {
-		key := attr.Key()
-		val := attr.Value()
-		if !isValidToken(key) || !isValidValue(val) {
-			continue
-		}
-		if strings.HasPrefix(key, utils.SystemAttributePrefix) {
-			key = systemBackwardTranslator(key)
-		}
-		r.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
-		switch key {
-		case object.AttributeFileName:
-			filename = val
-		case object.AttributeTimestamp:
-			value, err := strconv.ParseInt(val, 10, 64)
-			if err != nil {
-				r.log.Info("couldn't parse creation date",
-					zap.String("key", key),
-					zap.String("val", val),
-					zap.Error(err))
-				continue
-			}
-			r.Response.Header.Set(fasthttp.HeaderLastModified,
-				time.Unix(value, 0).UTC().Format(http.TimeFormat))
-		case object.AttributeContentType:
-			contentType = val
-		}
-	}
-
-	idsToResponse(&r.Response, &rObj.Header)
-
-	if len(contentType) == 0 {
-		// determine the Content-Type from the payload head
-		var payloadHead []byte
-
-		contentType, payloadHead, err = readContentType(payloadSize, func(uint64) (io.Reader, error) {
-			return rObj.Payload, nil
-		})
-		if err != nil && err != io.EOF {
-			r.log.Error("could not detect Content-Type from payload", zap.Error(err))
-			response.Error(r.RequestCtx, "could not detect Content-Type from payload: "+err.Error(), fasthttp.StatusBadRequest)
-			return
-		}
-
-		// reset payload reader since a part of the data has been read
-		var headReader io.Reader = bytes.NewReader(payloadHead)
-
-		if err != io.EOF { // otherwise, we've already read full payload
-			headReader = io.MultiReader(headReader, rObj.Payload)
-		}
-
-		// note: we could do with io.Reader, but SetBodyStream below closes body stream
-		// if it implements io.Closer and that's useful for us.
-		rObj.Payload = readCloser{headReader, rObj.Payload}
-	}
-	r.SetContentType(contentType)
-
-	r.Response.Header.Set(fasthttp.HeaderContentDisposition, dis+"; filename="+path.Base(filename))
-
-	r.Response.SetBodyStream(rObj.Payload, int(payloadSize))
-}
-
-// systemBackwardTranslator is used to convert headers looking like '__NEOFS__ATTR_NAME' to 'Neofs-Attr-Name'.
-func systemBackwardTranslator(key string) string {
-	// trim specified prefix '__NEOFS__'
-	key = strings.TrimPrefix(key, utils.SystemAttributePrefix)
-
-	var res strings.Builder
-	res.WriteString("Neofs-")
-
-	strs := strings.Split(key, "_")
-	for i, s := range strs {
-		s = title(strings.ToLower(s))
-		res.WriteString(s)
-		if i != len(strs)-1 {
-			res.WriteString("-")
-		}
-	}
-
-	return res.String()
-}
-
-func title(str string) string {
-	if str == "" {
-		return ""
-	}
-
-	r, size := utf8.DecodeRuneInString(str)
-	r0 := unicode.ToTitle(r)
-	return string(r0) + str[size:]
-}
-
-func bearerToken(ctx context.Context) *bearer.Token {
-	if tkn, err := tokens.LoadBearerToken(ctx); err == nil {
-		return tkn
-	}
-	return nil
-}
-
-func (r *request) handleFrostFSErr(err error, start time.Time) {
-	r.log.Error(
-		"could not receive object",
-		zap.Stringer("elapsed", time.Since(start)),
-		zap.Error(err),
-	)
-
-	if client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err) {
-		response.Error(r.RequestCtx, "Not Found", fasthttp.StatusNotFound)
-		return
-	}
-
-	msg := fmt.Sprintf("could not receive object: %v", err)
-	response.Error(r.RequestCtx, msg, fasthttp.StatusBadRequest)
-}
-
-// Downloader is a download request handler.
-type Downloader struct {
-	appCtx            context.Context
-	log               *zap.Logger
-	pool              *pool.Pool
-	containerResolver *resolver.ContainerResolver
-	settings          *Settings
-}
-
-// Settings stores reloading parameters, so it has to provide atomic getters and setters.
-type Settings struct {
-	zipCompression atomic.Bool
-}
-
-func (s *Settings) ZipCompression() bool {
-	return s.zipCompression.Load()
-}
-
-func (s *Settings) SetZipCompression(val bool) {
-	s.zipCompression.Store(val)
-}
-
-// New creates an instance of Downloader using specified options.
-func New(ctx context.Context, params *utils.AppParams, settings *Settings) *Downloader {
-	return &Downloader{
-		appCtx:            ctx,
-		log:               params.Logger,
-		pool:              params.Pool,
-		settings:          settings,
-		containerResolver: params.Resolver,
-	}
-}
-
-func (d *Downloader) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) *request {
-	return &request{
-		RequestCtx: ctx,
-		appCtx:     d.appCtx,
-		log:        log,
-	}
-}
-
-// DownloadByAddress handles download requests using simple cid/oid format.
-func (d *Downloader) DownloadByAddress(c *fasthttp.RequestCtx) {
-	d.byAddress(c, request.receiveFile)
-}
-
-// byAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
-// prepares request and object address to it.
-func (d *Downloader) byAddress(c *fasthttp.RequestCtx, f func(request, *pool.Pool, oid.Address)) {
-	var (
-		idCnr, _ = c.UserValue("cid").(string)
-		idObj, _ = c.UserValue("oid").(string)
-		log      = d.log.With(zap.String("cid", idCnr), zap.String("oid", idObj))
-	)
-
-	cnrID, err := utils.GetContainerID(d.appCtx, idCnr, d.containerResolver)
-	if err != nil {
-		log.Error("wrong container id", zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	objID := new(oid.ID)
-	if err = objID.DecodeString(idObj); err != nil {
-		log.Error("wrong object id", zap.Error(err))
-		response.Error(c, "wrong object id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	var addr oid.Address
-	addr.SetContainer(*cnrID)
-	addr.SetObject(*objID)
-
-	f(*d.newRequest(c, log), d.pool, addr)
-}
-
-// DownloadByAttribute handles attribute-based download requests.
-func (d *Downloader) DownloadByAttribute(c *fasthttp.RequestCtx) {
-	d.byAttribute(c, request.receiveFile)
-}
-
-// byAttribute is a wrapper similar to byAddress.
-func (d *Downloader) byAttribute(c *fasthttp.RequestCtx, f func(request, *pool.Pool, oid.Address)) {
-	var (
-		scid, _ = c.UserValue("cid").(string)
-		key, _  = url.QueryUnescape(c.UserValue("attr_key").(string))
-		val, _  = url.QueryUnescape(c.UserValue("attr_val").(string))
-		log     = d.log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
-	)
-
-	containerID, err := utils.GetContainerID(d.appCtx, scid, d.containerResolver)
-	if err != nil {
-		log.Error("wrong container id", zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	res, err := d.search(c, containerID, key, val, object.MatchStringEqual)
-	if err != nil {
-		log.Error("could not search for objects", zap.Error(err))
-		response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	defer res.Close()
-
-	buf := make([]oid.ID, 1)
-
-	n, err := res.Read(buf)
-	if n == 0 {
-		if errors.Is(err, io.EOF) {
-			log.Error("object not found", zap.Error(err))
-			response.Error(c, "object not found", fasthttp.StatusNotFound)
-			return
-		}
-
-		log.Error("read object list failed", zap.Error(err))
-		response.Error(c, "read object list failed: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	var addrObj oid.Address
-	addrObj.SetContainer(*containerID)
-	addrObj.SetObject(buf[0])
-
-	f(*d.newRequest(c, log), d.pool, addrObj)
-}
-
-func (d *Downloader) search(c *fasthttp.RequestCtx, cid *cid.ID, key, val string, op object.SearchMatchType) (pool.ResObjectSearch, error) {
-	filters := object.NewSearchFilters()
-	filters.AddRootFilter()
-	filters.AddFilter(key, val, op)
-
-	var prm pool.PrmObjectSearch
-	prm.SetContainerID(*cid)
-	prm.SetFilters(filters)
-	if btoken := bearerToken(c); btoken != nil {
-		prm.UseBearer(*btoken)
-	}
-
-	return d.pool.SearchObjects(d.appCtx, prm)
-}
-
-func (d *Downloader) getContainer(cnrID cid.ID) (container.Container, error) {
-	var prm pool.PrmContainerGet
-	prm.SetContainerID(cnrID)
-
-	return d.pool.GetContainer(d.appCtx, prm)
-}
-
-func (d *Downloader) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
-	method := zip.Store
-	if d.settings.ZipCompression() {
-		method = zip.Deflate
-	}
-
-	filePath := getZipFilePath(obj)
-	if len(filePath) == 0 || filePath[len(filePath)-1] == '/' {
-		return nil, fmt.Errorf("invalid filepath '%s'", filePath)
-	}
-
-	return zw.CreateHeader(&zip.FileHeader{
-		Name:     filePath,
-		Method:   method,
-		Modified: time.Now(),
-	})
-}
-
-// DownloadZipped handles zip by prefix requests.
-func (d *Downloader) DownloadZipped(c *fasthttp.RequestCtx) {
-	scid, _ := c.UserValue("cid").(string)
-	prefix, _ := url.QueryUnescape(c.UserValue("prefix").(string))
-	log := d.log.With(zap.String("cid", scid), zap.String("prefix", prefix))
-
-	containerID, err := utils.GetContainerID(d.appCtx, scid, d.containerResolver)
-	if err != nil {
-		log.Error("wrong container id", zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	if err = tokens.StoreBearerToken(c); err != nil {
-		log.Error("could not fetch and store bearer token", zap.Error(err))
-		response.Error(c, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	// check if container exists here to be able to return 404 error,
-	// otherwise we get this error only in object iteration step
-	// and client get 200 OK.
-	if _, err = d.getContainer(*containerID); err != nil {
-		log.Error("could not check container existence", zap.Error(err))
-		if client.IsErrContainerNotFound(err) {
-			response.Error(c, "Not Found", fasthttp.StatusNotFound)
-			return
-		}
-		response.Error(c, "could not check container existence: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	resSearch, err := d.search(c, containerID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
-	if err != nil {
-		log.Error("could not search for objects", zap.Error(err))
-		response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
-		return
-	}
-
-	c.Response.Header.Set(fasthttp.HeaderContentType, "application/zip")
-	c.Response.Header.Set(fasthttp.HeaderContentDisposition, "attachment; filename=\"archive.zip\"")
-	c.Response.SetStatusCode(http.StatusOK)
-
-	c.SetBodyStreamWriter(func(w *bufio.Writer) {
-		defer resSearch.Close()
-
-		zipWriter := zip.NewWriter(w)
-
-		var bufZip []byte
-		var addr oid.Address
-
-		empty := true
-		called := false
-		btoken := bearerToken(c)
-		addr.SetContainer(*containerID)
-
-		errIter := resSearch.Iterate(func(id oid.ID) bool {
-			called = true
-
-			if empty {
-				bufZip = make([]byte, 3<<20) // the same as for upload
-			}
-			empty = false
-
-			addr.SetObject(id)
-			if err = d.zipObject(zipWriter, addr, btoken, bufZip); err != nil {
-				log.Error("failed to add object to archive", zap.String("oid", id.EncodeToString()), zap.Error(err))
-			}
-
-			return false
-		})
-		if errIter != nil {
-			log.Error("iterating over selected objects failed", zap.Error(errIter))
-		} else if !called {
-			log.Error("objects not found")
-		}
-
-		if err = zipWriter.Close(); err != nil {
-			log.Error("close zip writer", zap.Error(err))
-		}
-	})
-}
-
-func (d *Downloader) zipObject(zipWriter *zip.Writer, addr oid.Address, btoken *bearer.Token, bufZip []byte) error {
-	var prm pool.PrmObjectGet
-	prm.SetAddress(addr)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
-	}
-
-	resGet, err := d.pool.GetObject(d.appCtx, prm)
-	if err != nil {
-		return fmt.Errorf("get FrostFS object: %v", err)
-	}
-
-	objWriter, err := d.addObjectToZip(zipWriter, &resGet.Header)
-	if err != nil {
-		return fmt.Errorf("zip create header: %v", err)
-	}
-
-	if _, err = io.CopyBuffer(objWriter, resGet.Payload, bufZip); err != nil {
-		return fmt.Errorf("copy object payload to zip file: %v", err)
-	}
-
-	if err = resGet.Payload.Close(); err != nil {
-		return fmt.Errorf("object body close error: %w", err)
-	}
-
-	if err = zipWriter.Flush(); err != nil {
-		return fmt.Errorf("flush zip writer: %v", err)
-	}
-
-	return nil
-}
-
-func getZipFilePath(obj *object.Object) string {
-	for _, attr := range obj.Attributes() {
-		if attr.Key() == object.AttributeFilePath {
-			return attr.Value()
-		}
-	}
-
-	return ""
-}

downloader/download_test.go

@@ -1,23 +0,0 @@
-package downloader
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestSystemBackwardTranslator(t *testing.T) {
-	input := []string{
-		"__NEOFS__EXPIRATION_EPOCH",
-		"__NEOFS__RANDOM_ATTR",
-	}
-	expected := []string{
-		"Neofs-Expiration-Epoch",
-		"Neofs-Random-Attr",
-	}
-
-	for i, str := range input {
-		res := systemBackwardTranslator(str)
-		require.Equal(t, expected[i], res)
-	}
-}

downloader/head.go

@@ -1,120 +0,0 @@
-package downloader
-
-import (
-	"io"
-	"net/http"
-	"strconv"
-	"strings"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
-	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-)
-
-// max bytes needed to detect content type according to http.DetectContentType docs.
-const sizeToDetectType = 512
-
-const (
-	hdrObjectID    = "X-Object-Id"
-	hdrOwnerID     = "X-Owner-Id"
-	hdrContainerID = "X-Container-Id"
-)
-
-func (r request) headObject(clnt *pool.Pool, objectAddress oid.Address) {
-	var start = time.Now()
-	if err := tokens.StoreBearerToken(r.RequestCtx); err != nil {
-		r.log.Error("could not fetch and store bearer token", zap.Error(err))
-		response.Error(r.RequestCtx, "could not fetch and store bearer token", fasthttp.StatusBadRequest)
-		return
-	}
-
-	btoken := bearerToken(r.RequestCtx)
-
-	var prm pool.PrmObjectHead
-	prm.SetAddress(objectAddress)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
-	}
-
-	obj, err := clnt.HeadObject(r.appCtx, prm)
-	if err != nil {
-		r.handleFrostFSErr(err, start)
-		return
-	}
-
-	r.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(obj.PayloadSize(), 10))
-	var contentType string
-	for _, attr := range obj.Attributes() {
-		key := attr.Key()
-		val := attr.Value()
-		if !isValidToken(key) || !isValidValue(val) {
-			continue
-		}
-		if strings.HasPrefix(key, utils.SystemAttributePrefix) {
-			key = systemBackwardTranslator(key)
-		}
-		r.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
-		switch key {
-		case object.AttributeTimestamp:
-			value, err := strconv.ParseInt(val, 10, 64)
-			if err != nil {
-				r.log.Info("couldn't parse creation date",
-					zap.String("key", key),
-					zap.String("val", val),
-					zap.Error(err))
-				continue
-			}
-			r.Response.Header.Set(fasthttp.HeaderLastModified, time.Unix(value, 0).UTC().Format(http.TimeFormat))
-		case object.AttributeContentType:
-			contentType = val
-		}
-	}
-
-	idsToResponse(&r.Response, &obj)
-
-	if len(contentType) == 0 {
-		contentType, _, err = readContentType(obj.PayloadSize(), func(sz uint64) (io.Reader, error) {
-			var prmRange pool.PrmObjectRange
-			prmRange.SetAddress(objectAddress)
-			prmRange.SetLength(sz)
-			if btoken != nil {
-				prmRange.UseBearer(*btoken)
-			}
-
-			resObj, err := clnt.ObjectRange(r.appCtx, prmRange)
-			if err != nil {
-				return nil, err
-			}
-			return &resObj, nil
-		})
-		if err != nil && err != io.EOF {
-			r.handleFrostFSErr(err, start)
-			return
-		}
-	}
-	r.SetContentType(contentType)
-}
-
-func idsToResponse(resp *fasthttp.Response, obj *object.Object) {
-	objID, _ := obj.ID()
-	cnrID, _ := obj.ContainerID()
-	resp.Header.Set(hdrObjectID, objID.String())
-	resp.Header.Set(hdrOwnerID, obj.OwnerID().String())
-	resp.Header.Set(hdrContainerID, cnrID.String())
-}
-
-// HeadByAddress handles head requests using simple cid/oid format.
-func (d *Downloader) HeadByAddress(c *fasthttp.RequestCtx) {
-	d.byAddress(c, request.headObject)
-}
-
-// HeadByAttribute handles attribute-based head requests.
-func (d *Downloader) HeadByAttribute(c *fasthttp.RequestCtx) {
-	d.byAttribute(c, request.headObject)
-}

go.mod

@@ -1,100 +1,119 @@
 module git.frostfs.info/TrueCloudLab/frostfs-http-gw
 
-go 1.18
+go 1.22
 
 require (
-	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.11.2-0.20230307104236-f69d2ad83c51
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230307124721-94476f905599
+	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241206094944-81c423e7094d
+	git.frostfs.info/TrueCloudLab/multinet v0.0.0-20241015075604-6cb0d80e0972
+	git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02
+	github.com/bluele/gcache v0.0.2
+	github.com/docker/go-units v0.4.0
 	github.com/fasthttp/router v1.4.1
-	github.com/nspcc-dev/neo-go v0.101.0
-	github.com/prometheus/client_golang v1.13.0
+	github.com/nspcc-dev/neo-go v0.106.2
+	github.com/panjf2000/ants/v2 v2.5.0
+	github.com/prometheus/client_golang v1.19.0
+	github.com/prometheus/client_model v0.5.0
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.15.0
-	github.com/stretchr/testify v1.8.1
+	github.com/ssgreg/journald v1.0.0
+	github.com/stretchr/testify v1.9.0
 	github.com/testcontainers/testcontainers-go v0.13.0
+	github.com/trailofbits/go-fuzz-utils v0.0.0-20230413173806-58c38daa3cb4
 	github.com/valyala/fasthttp v1.34.0
-	go.uber.org/atomic v1.10.0
-	go.uber.org/zap v1.24.0
+	go.opentelemetry.io/otel v1.28.0
+	go.opentelemetry.io/otel/trace v1.28.0
+	go.uber.org/zap v1.27.0
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842
+	golang.org/x/net v0.26.0
+	golang.org/x/sys v0.22.0
+	google.golang.org/grpc v1.66.2
 )
 
 require (
-	git.frostfs.info/TrueCloudLab/frostfs-contract v0.0.0-20230307110621-19a8ef2d02fb // indirect
+	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e // indirect
 	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 // indirect
-	git.frostfs.info/TrueCloudLab/hrw v1.2.0 // indirect
+	git.frostfs.info/TrueCloudLab/hrw v1.2.1 // indirect
 	git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 // indirect
 	git.frostfs.info/TrueCloudLab/tzhash v1.8.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/Microsoft/go-winio v0.5.2 // indirect
 	github.com/Microsoft/hcsshim v0.9.2 // indirect
+	github.com/VictoriaMetrics/easyproto v0.1.4 // indirect
 	github.com/andybalholm/brotli v1.0.4 // indirect
-	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20221202181307-76fa05c21b12 // indirect
+	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/containerd/cgroups v1.0.3 // indirect
 	github.com/containerd/containerd v1.6.2 // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/docker/distribution v2.8.1+incompatible // indirect
 	github.com/docker/docker v20.10.14+incompatible // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
-	github.com/docker/go-units v0.4.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/uuid v1.3.0 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/gorilla/websocket v1.4.2 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
-	github.com/hashicorp/golang-lru/v2 v2.0.1 // indirect
+	github.com/gorilla/websocket v1.5.1 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
-	github.com/klauspost/compress v1.15.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/klauspost/compress v1.16.4 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moby/sys/mount v0.3.2 // indirect
 	github.com/moby/sys/mountinfo v0.6.1 // indirect
 	github.com/moby/term v0.0.0-20210619224110-3f7ff695adc6 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/mr-tron/base58 v1.2.0 // indirect
-	github.com/nspcc-dev/go-ordered-json v0.0.0-20220111165707-25110be27d22 // indirect
-	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20221202075445-cb5c18dc73eb // indirect
-	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
+	github.com/nspcc-dev/go-ordered-json v0.0.0-20240301084351-0246b013f8b2 // indirect
+	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20240521091047-78685785716d // indirect
+	github.com/nspcc-dev/rfc6979 v0.2.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.1.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.37.0 // indirect
-	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/savsgio/gotils v0.0.0-20210617111740-97865ed5a873 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
-	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/spf13/afero v1.9.3 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/subosito/gotenv v1.4.2 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
+	github.com/twmb/murmur3 v1.1.8 // indirect
 	github.com/urfave/cli v1.22.5 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	go.etcd.io/bbolt v1.3.9 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	go.uber.org/multierr v1.9.0 // indirect
-	golang.org/x/crypto v0.4.0 // indirect
-	golang.org/x/exp v0.0.0-20221227203929-1b447090c38c // indirect
-	golang.org/x/net v0.4.0 // indirect
-	golang.org/x/sync v0.1.0 // indirect
-	golang.org/x/sys v0.3.0 // indirect
-	golang.org/x/term v0.3.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
-	google.golang.org/genproto v0.0.0-20221227171554-f9683d7f8bef // indirect
-	google.golang.org/grpc v1.52.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
-	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/metric v1.28.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.28.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/crypto v0.24.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -37,20 +37,24 @@ cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RX
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.11.2-0.20230307104236-f69d2ad83c51 h1:l4+K1hN+NuWNtlZZoV8yRRP3Uu7PifL05ukEqKcb0Ks=
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.11.2-0.20230307104236-f69d2ad83c51/go.mod h1:n0DxKYulu2Ar73R6OcNF34LiL/Xa+iDR7GZuaOChbLE=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.0.0-20230307110621-19a8ef2d02fb h1:S/TrbOOu9qEXZRZ9/Ddw7crnxbBUQLo68PSzQWYrc9M=
-git.frostfs.info/TrueCloudLab/frostfs-contract v0.0.0-20230307110621-19a8ef2d02fb/go.mod h1:nkR5gaGeez3Zv2SE7aceP0YwxG2FzIB5cGKpQO2vV2o=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e h1:kcBqZBiFIUBATUqEuvVigtkJJWQ2Gug/eYXn967o3M4=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
 git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 h1:FxqFDhQYYgpe41qsIHVOcdzSVCB8JNSfPG7Uk4r2oSk=
 git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0/go.mod h1:RUIKZATQLJ+TaYQa60X2fTDwfuhMfm8Ar60bQ5fr+vU=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230307124721-94476f905599 h1:mzGX2RX8R8H/tUqrUu1TcYk4QRDBcBIWGYscPncfLOQ=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230307124721-94476f905599/go.mod h1:z7zcpGY+puI5puyy5oyFbf20vWp84WtslCxcr6/kv5c=
-git.frostfs.info/TrueCloudLab/hrw v1.2.0 h1:KvAES7xIqmQBGd2q8KanNosD9+4BhU/zqD5Kt5KSflk=
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@@ -231,6 +216,7 @@ github.com/containerd/continuity v0.0.0-20201208142359-180525291bb7/go.mod h1:kR
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@@ -292,8 +278,8 @@ github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfc
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@@ -304,14 +290,11 @@ github.com/d2g/dhcp4 v0.0.0-20170904100407-a1d1b6c41b1c/go.mod h1:Ct2BUK8SB0YC1S
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@@ -351,20 +334,16 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
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@@ -379,14 +358,15 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
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@@ -398,13 +378,11 @@ github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8
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@@ -435,7 +413,6 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -452,14 +429,10 @@ github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QD
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@@ -474,8 +447,8 @@ github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -498,8 +471,9 @@ github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
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@@ -512,8 +486,9 @@ github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
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@@ -521,20 +496,20 @@ github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgf
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@@ -583,8 +552,8 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
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@@ -599,21 +568,17 @@ github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN
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@@ -623,6 +588,8 @@ github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh
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@@ -792,15 +730,14 @@ github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+Gx
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@@ -825,8 +762,6 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
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@@ -849,6 +784,8 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
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@@ -865,15 +802,14 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@@ -881,7 +817,10 @@ github.com/testcontainers/testcontainers-go v0.13.0 h1:OUujSlEGsXVo/ykPVZk3KanBN
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@@ -895,8 +834,6 @@ github.com/valyala/fasthttp v1.28.0/go.mod h1:cmWIqlu99AO/RKcp1HWaViTqc57FswJOfY
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@@ -915,17 +852,15 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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@@ -936,25 +871,34 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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 golang.org/x/crypto v0.0.0-20171113213409-9f005a07e0d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181009213950-7c1a557ab941/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -964,19 +908,16 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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+golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
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@@ -987,8 +928,8 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
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 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
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 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -1013,8 +954,8 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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-golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
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+golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
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@@ -1062,15 +1003,12 @@ golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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-golang.org/x/net v0.4.0/go.mod h1:MBQ8lrhLObU/6UmLb4fmbmk5OcyYmqtbGd/9yIeKjEE=
+golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
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@@ -1080,8 +1018,6 @@ golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20201109201403-9fd604954f58/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -1093,17 +1029,14 @@ golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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-golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -1120,14 +1053,11 @@ golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/sys v0.0.0-20191022100944-742c48ecaeb7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -1155,7 +1085,6 @@ golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200622214017-ed371f2e16b4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20200728102440-3e129f6d46b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -1182,26 +1111,22 @@ golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1210,17 +1135,17 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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-golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
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@@ -1242,7 +1167,6 @@ golang.org/x/tools v0.0.0-20190706070813-72ffa07ba3db/go.mod h1:jcCCGcm9btYwXyDq
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@@ -1273,7 +1197,6 @@ golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc
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@@ -1283,11 +1206,14 @@ golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4f
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-golang.org/x/tools v0.1.8/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
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@@ -1357,8 +1283,10 @@ google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6D
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+google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094/go.mod h1:Ue6ibwXGpU+dqIcODieyLOcgj7z8+IcskoNIgZxtrFY=
 google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
@@ -1382,9 +1310,8 @@ google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA5
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
-google.golang.org/grpc v1.52.0 h1:kd48UiU7EHsV4rnLyOJRuP/Il/UHE7gdDAQ+SZI7nZk=
-google.golang.org/grpc v1.52.0/go.mod h1:pu6fVzoFb+NBYNAvQL08ic+lvB2IojljRYuun5vorUY=
+google.golang.org/grpc v1.66.2 h1:3QdXkuq3Bkh7w+ywLdLvM56cmGvQHUMZpiCzt6Rqaoo=
+google.golang.org/grpc v1.66.2/go.mod h1:s3/l6xSSCURdVfAnL+TqCNMyTDAGN6+lZeVxnZR128Y=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1398,9 +1325,8 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/abiosoft/ishell.v2 v2.0.0/go.mod h1:sFp+cGtH6o4s1FtpVPTMcHq2yue+c4DGOVohJCPUzwY=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -1422,6 +1348,7 @@ gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/square/go-jose.v2 v2.3.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/square/go-jose.v2 v2.5.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -1431,6 +1358,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
@@ -1482,6 +1410,8 @@ k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=
+rsc.io/tmplfunc v0.0.3/go.mod h1:AG3sTPzElb1Io3Yg4voV9AGZJuleGAwaVRxL9M49PhA=
 sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.14/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
 sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=

internal/cache/buckets.go

@@ -0,0 +1,72 @@
+package cache
+
+import (
+	"fmt"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"github.com/bluele/gcache"
+	"go.uber.org/zap"
+)
+
+// BucketCache contains cache with objects and the lifetime of cache entries.
+type BucketCache struct {
+	cache  gcache.Cache
+	logger *zap.Logger
+}
+
+// Config stores expiration params for cache.
+type Config struct {
+	Size     int
+	Lifetime time.Duration
+	Logger   *zap.Logger
+}
+
+const (
+	// DefaultBucketCacheSize is a default maximum number of entries in cache.
+	DefaultBucketCacheSize = 1e3
+	// DefaultBucketCacheLifetime is a default lifetime of entries in cache.
+	DefaultBucketCacheLifetime = time.Minute
+)
+
+// DefaultBucketConfig returns new default cache expiration values.
+func DefaultBucketConfig(logger *zap.Logger) *Config {
+	return &Config{
+		Size:     DefaultBucketCacheSize,
+		Lifetime: DefaultBucketCacheLifetime,
+		Logger:   logger,
+	}
+}
+
+// NewBucketCache creates an object of BucketCache.
+func NewBucketCache(config *Config) *BucketCache {
+	gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build()
+	return &BucketCache{cache: gc, logger: config.Logger}
+}
+
+// Get returns a cached object.
+func (o *BucketCache) Get(ns, bktName string) *data.BucketInfo {
+	entry, err := o.cache.Get(formKey(ns, bktName))
+	if err != nil {
+		return nil
+	}
+
+	result, ok := entry.(*data.BucketInfo)
+	if !ok {
+		o.logger.Warn(logs.InvalidCacheEntryType, zap.String("actual", fmt.Sprintf("%T", entry)),
+			zap.String("expected", fmt.Sprintf("%T", result)))
+		return nil
+	}
+
+	return result
+}
+
+// Put puts an object to cache.
+func (o *BucketCache) Put(bkt *data.BucketInfo) error {
+	return o.cache.Set(formKey(bkt.Zone, bkt.Name), bkt)
+}
+
+func formKey(ns, name string) string {
+	return name + "." + ns
+}

internal/data/info.go

@@ -0,0 +1,12 @@
+package data
+
+import (
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+)
+
+type BucketInfo struct {
+	Name                    string // container name from system attribute
+	Zone                    string // container zone from system attribute
+	CID                     cid.ID
+	HomomorphicHashDisabled bool
+}

internal/data/tree.go

@@ -0,0 +1,27 @@
+package data
+
+import (
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+)
+
+// NodeVersion represent node from tree service.
+type NodeVersion struct {
+	BaseNodeVersion
+}
+
+// BaseNodeVersion is minimal node info from tree service.
+// Basically used for "system" object.
+type BaseNodeVersion struct {
+	ID             uint64
+	OID            oid.ID
+	IsDeleteMarker bool
+}
+
+type NodeInfo struct {
+	Meta []NodeMeta
+}
+
+type NodeMeta interface {
+	GetKey() string
+	GetValue() []byte
+}

internal/handler/browse.go

@@ -0,0 +1,382 @@
+package handler
+
+import (
+	"context"
+	"html/template"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/docker/go-units"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+const (
+	dateFormat       = "02-01-2006 15:04"
+	attrOID          = "OID"
+	attrCreated      = "Created"
+	attrFileName     = "FileName"
+	attrFilePath     = "FilePath"
+	attrSize         = "Size"
+	attrDeleteMarker = "IsDeleteMarker"
+)
+
+type (
+	BrowsePageData struct {
+		HasErrors bool
+		Container string
+		Prefix    string
+		Protocol  string
+		Objects   []ResponseObject
+	}
+	ResponseObject struct {
+		OID            string
+		Created        string
+		FileName       string
+		FilePath       string
+		Size           string
+		IsDir          bool
+		GetURL         string
+		IsDeleteMarker bool
+	}
+)
+
+func newListObjectsResponseS3(attrs map[string]string) ResponseObject {
+	return ResponseObject{
+		Created:        formatTimestamp(attrs[attrCreated]),
+		OID:            attrs[attrOID],
+		FileName:       attrs[attrFileName],
+		Size:           attrs[attrSize],
+		IsDir:          attrs[attrOID] == "",
+		IsDeleteMarker: attrs[attrDeleteMarker] == "true",
+	}
+}
+
+func newListObjectsResponseNative(attrs map[string]string) ResponseObject {
+	filename := lastPathElement(attrs[object.AttributeFilePath])
+	if filename == "" {
+		filename = attrs[attrFileName]
+	}
+	return ResponseObject{
+		OID:      attrs[attrOID],
+		Created:  formatTimestamp(attrs[object.AttributeTimestamp] + "000"),
+		FileName: filename,
+		FilePath: attrs[object.AttributeFilePath],
+		Size:     attrs[attrSize],
+		IsDir:    false,
+	}
+}
+
+func getNextDir(filepath, prefix string) string {
+	restPath := strings.Replace(filepath, prefix, "", 1)
+	index := strings.Index(restPath, "/")
+	if index == -1 {
+		return ""
+	}
+	return restPath[:index]
+}
+
+func lastPathElement(path string) string {
+	if path == "" {
+		return path
+	}
+	index := strings.LastIndex(path, "/")
+	if index == len(path)-1 {
+		index = strings.LastIndex(path[:index], "/")
+	}
+	return path[index+1:]
+}
+
+func parseTimestamp(tstamp string) (time.Time, error) {
+	millis, err := strconv.ParseInt(tstamp, 10, 64)
+	if err != nil {
+		return time.Time{}, err
+	}
+
+	return time.UnixMilli(millis), nil
+}
+
+func formatTimestamp(strdate string) string {
+	date, err := parseTimestamp(strdate)
+	if err != nil || date.IsZero() {
+		return ""
+	}
+
+	return date.Format(dateFormat)
+}
+
+func formatSize(strsize string) string {
+	size, err := strconv.ParseFloat(strsize, 64)
+	if err != nil {
+		return "0B"
+	}
+	return units.HumanSize(size)
+}
+
+func parentDir(prefix string) string {
+	index := strings.LastIndex(prefix, "/")
+	if index == -1 {
+		return prefix
+	}
+	return prefix[index:]
+}
+
+func trimPrefix(encPrefix string) string {
+	prefix, err := url.PathUnescape(encPrefix)
+	if err != nil {
+		return ""
+	}
+	slashIndex := strings.LastIndex(prefix, "/")
+	if slashIndex == -1 {
+		return ""
+	}
+	return prefix[:slashIndex]
+}
+
+func urlencode(path string) string {
+	var res strings.Builder
+
+	prefixParts := strings.Split(path, "/")
+	for _, prefixPart := range prefixParts {
+		prefixPart = "/" + url.PathEscape(prefixPart)
+		if prefixPart == "/." || prefixPart == "/.." {
+			prefixPart = url.PathEscape(prefixPart)
+		}
+		res.WriteString(prefixPart)
+	}
+
+	return res.String()
+}
+
+type GetObjectsResponse struct {
+	objects   []ResponseObject
+	hasErrors bool
+}
+
+func (h *Handler) getDirObjectsS3(ctx context.Context, bucketInfo *data.BucketInfo, prefix string) (*GetObjectsResponse, error) {
+	nodes, _, err := h.tree.GetSubTreeByPrefix(ctx, bucketInfo, prefix, true)
+	if err != nil {
+		return nil, err
+	}
+
+	result := &GetObjectsResponse{
+		objects: make([]ResponseObject, 0, len(nodes)),
+	}
+	for _, node := range nodes {
+		meta := node.Meta
+		if meta == nil {
+			continue
+		}
+		var attrs = make(map[string]string, len(meta))
+		for _, m := range meta {
+			attrs[m.GetKey()] = string(m.GetValue())
+		}
+		obj := newListObjectsResponseS3(attrs)
+		if obj.IsDeleteMarker {
+			continue
+		}
+		obj.FilePath = prefix + obj.FileName
+		obj.GetURL = "/get/" + bucketInfo.Name + urlencode(obj.FilePath)
+		result.objects = append(result.objects, obj)
+	}
+
+	return result, nil
+}
+
+func (h *Handler) getDirObjectsNative(ctx context.Context, bucketInfo *data.BucketInfo, prefix string) (*GetObjectsResponse, error) {
+	var basePath string
+	if ind := strings.LastIndex(prefix, "/"); ind != -1 {
+		basePath = prefix[:ind+1]
+	}
+
+	filters := object.NewSearchFilters()
+	filters.AddRootFilter()
+	if prefix != "" {
+		filters.AddFilter(object.AttributeFilePath, prefix, object.MatchCommonPrefix)
+	}
+
+	prm := PrmObjectSearch{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Container: bucketInfo.CID,
+		Filters:   filters,
+	}
+	objectIDs, err := h.frostfs.SearchObjects(ctx, prm)
+	if err != nil {
+		return nil, err
+	}
+	defer objectIDs.Close()
+
+	resp, err := h.headDirObjects(ctx, bucketInfo.CID, objectIDs, basePath)
+	if err != nil {
+		return nil, err
+	}
+
+	log := utils.GetReqLogOrDefault(ctx, h.log)
+	dirs := make(map[string]struct{})
+	result := &GetObjectsResponse{
+		objects: make([]ResponseObject, 0, 100),
+	}
+	for objExt := range resp {
+		if objExt.Error != nil {
+			log.Error(logs.FailedToHeadObject, zap.Error(objExt.Error))
+			result.hasErrors = true
+			continue
+		}
+		if objExt.Object.IsDir {
+			if _, ok := dirs[objExt.Object.FileName]; ok {
+				continue
+			}
+			objExt.Object.GetURL = "/get/" + bucketInfo.CID.EncodeToString() + urlencode(objExt.Object.FilePath)
+			dirs[objExt.Object.FileName] = struct{}{}
+		} else {
+			objExt.Object.GetURL = "/get/" + bucketInfo.CID.EncodeToString() + "/" + objExt.Object.OID
+		}
+		result.objects = append(result.objects, objExt.Object)
+	}
+	return result, nil
+}
+
+type ResponseObjectExtended struct {
+	Object ResponseObject
+	Error  error
+}
+
+func (h *Handler) headDirObjects(ctx context.Context, cnrID cid.ID, objectIDs ResObjectSearch, basePath string) (<-chan ResponseObjectExtended, error) {
+	res := make(chan ResponseObjectExtended)
+
+	go func() {
+		defer close(res)
+		log := utils.GetReqLogOrDefault(ctx, h.log).With(
+			zap.String("cid", cnrID.EncodeToString()),
+			zap.String("path", basePath),
+		)
+		var wg sync.WaitGroup
+		err := objectIDs.Iterate(func(id oid.ID) bool {
+			wg.Add(1)
+			err := h.workerPool.Submit(func() {
+				defer wg.Done()
+				var obj ResponseObjectExtended
+				obj.Object, obj.Error = h.headDirObject(ctx, cnrID, id, basePath)
+				res <- obj
+			})
+			if err != nil {
+				wg.Done()
+				log.Warn(logs.FailedToSumbitTaskToPool, zap.Error(err))
+			}
+			select {
+			case <-ctx.Done():
+				return true
+			default:
+				return false
+			}
+		})
+		if err != nil {
+			log.Error(logs.FailedToIterateOverResponse, zap.Error(err))
+		}
+		wg.Wait()
+	}()
+
+	return res, nil
+}
+
+func (h *Handler) headDirObject(ctx context.Context, cnrID cid.ID, objID oid.ID, basePath string) (ResponseObject, error) {
+	addr := newAddress(cnrID, objID)
+	obj, err := h.frostfs.HeadObject(ctx, PrmObjectHead{
+		PrmAuth: PrmAuth{BearerToken: bearerToken(ctx)},
+		Address: addr,
+	})
+	if err != nil {
+		return ResponseObject{}, err
+	}
+
+	attrs := loadAttributes(obj.Attributes())
+	attrs[attrOID] = objID.EncodeToString()
+	if multipartSize, ok := attrs[attributeMultipartObjectSize]; ok {
+		attrs[attrSize] = multipartSize
+	} else {
+		attrs[attrSize] = strconv.FormatUint(obj.PayloadSize(), 10)
+	}
+
+	dirname := getNextDir(attrs[object.AttributeFilePath], basePath)
+	if dirname == "" {
+		return newListObjectsResponseNative(attrs), nil
+	}
+
+	return ResponseObject{
+		FileName: dirname,
+		FilePath: basePath + dirname,
+		IsDir:    true,
+	}, nil
+}
+
+type browseParams struct {
+	bucketInfo  *data.BucketInfo
+	prefix      string
+	isNative    bool
+	listObjects func(ctx context.Context, bucketName *data.BucketInfo, prefix string) (*GetObjectsResponse, error)
+}
+
+func (h *Handler) browseObjects(c *fasthttp.RequestCtx, p browseParams) {
+	const S3Protocol = "s3"
+	const FrostfsProtocol = "frostfs"
+
+	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(
+		zap.String("bucket", p.bucketInfo.Name),
+		zap.String("container", p.bucketInfo.CID.EncodeToString()),
+		zap.String("prefix", p.prefix),
+	)
+	resp, err := p.listObjects(ctx, p.bucketInfo, p.prefix)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	objects := resp.objects
+	sort.Slice(objects, func(i, j int) bool {
+		if objects[i].IsDir == objects[j].IsDir {
+			return objects[i].FileName < objects[j].FileName
+		}
+		return objects[i].IsDir
+	})
+
+	tmpl, err := template.New("index").Funcs(template.FuncMap{
+		"formatSize": formatSize,
+		"trimPrefix": trimPrefix,
+		"urlencode":  urlencode,
+		"parentDir":  parentDir,
+	}).Parse(h.config.IndexPageTemplate())
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	bucketName := p.bucketInfo.Name
+	protocol := S3Protocol
+	if p.isNative {
+		bucketName = p.bucketInfo.CID.EncodeToString()
+		protocol = FrostfsProtocol
+	}
+	if err = tmpl.Execute(c, &BrowsePageData{
+		Container: bucketName,
+		Prefix:    p.prefix,
+		Objects:   objects,
+		Protocol:  protocol,
+		HasErrors: resp.hasErrors,
+	}); err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+}

internal/handler/download.go

@@ -0,0 +1,227 @@
+package handler
+
+import (
+	"archive/zip"
+	"bufio"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+// DownloadByAddressOrBucketName handles download requests using simple cid/oid or bucketname/key format.
+func (h *Handler) DownloadByAddressOrBucketName(c *fasthttp.RequestCtx) {
+	cidParam := c.UserValue("cid").(string)
+	oidParam := c.UserValue("oid").(string)
+	downloadParam := c.QueryArgs().GetBool("download")
+
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log).With(
+		zap.String("cid", cidParam),
+		zap.String("oid", oidParam),
+	)
+
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	checkS3Err := h.tree.CheckSettingsNodeExists(ctx, bktInfo)
+	if checkS3Err != nil && !errors.Is(checkS3Err, layer.ErrNodeNotFound) {
+		logAndSendBucketError(c, log, checkS3Err)
+		return
+	}
+
+	req := h.newRequest(c, log)
+
+	var objID oid.ID
+	if checkS3Err == nil && shouldDownload(oidParam, downloadParam) {
+		h.byS3Path(ctx, req, bktInfo.CID, oidParam, h.receiveFile)
+	} else if err = objID.DecodeString(oidParam); err == nil {
+		h.byNativeAddress(ctx, req, bktInfo.CID, objID, h.receiveFile)
+	} else {
+		h.browseIndex(c, checkS3Err != nil)
+	}
+}
+
+func shouldDownload(oidParam string, downloadParam bool) bool {
+	return !isDir(oidParam) || downloadParam
+}
+
+func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) request {
+	return request{
+		RequestCtx: ctx,
+		log:        log,
+	}
+}
+
+// DownloadByAttribute handles attribute-based download requests.
+func (h *Handler) DownloadByAttribute(c *fasthttp.RequestCtx) {
+	h.byAttribute(c, h.receiveFile)
+}
+
+func (h *Handler) search(ctx context.Context, cnrID cid.ID, key, val string, op object.SearchMatchType) (ResObjectSearch, error) {
+	filters := object.NewSearchFilters()
+	filters.AddRootFilter()
+	filters.AddFilter(key, val, op)
+
+	prm := PrmObjectSearch{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Container: cnrID,
+		Filters:   filters,
+	}
+
+	return h.frostfs.SearchObjects(ctx, prm)
+}
+
+func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
+	method := zip.Store
+	if h.config.ZipCompression() {
+		method = zip.Deflate
+	}
+
+	filePath := getZipFilePath(obj)
+	if len(filePath) == 0 || filePath[len(filePath)-1] == '/' {
+		return nil, fmt.Errorf("invalid filepath '%s'", filePath)
+	}
+
+	return zw.CreateHeader(&zip.FileHeader{
+		Name:     filePath,
+		Method:   method,
+		Modified: time.Now(),
+	})
+}
+
+// DownloadZipped handles zip by prefix requests.
+func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
+	scid, _ := c.UserValue("cid").(string)
+	prefix, _ := c.UserValue("prefix").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log)
+
+	prefix, err := url.QueryUnescape(prefix)
+	if err != nil {
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
+		response.Error(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	log = log.With(zap.String("cid", scid), zap.String("prefix", prefix))
+
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	resSearch, err := h.search(ctx, bktInfo.CID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
+	if err != nil {
+		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
+		response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	c.Response.Header.Set(fasthttp.HeaderContentType, "application/zip")
+	c.Response.Header.Set(fasthttp.HeaderContentDisposition, "attachment; filename=\"archive.zip\"")
+	c.Response.SetStatusCode(http.StatusOK)
+
+	c.SetBodyStreamWriter(func(w *bufio.Writer) {
+		defer resSearch.Close()
+
+		zipWriter := zip.NewWriter(w)
+
+		var bufZip []byte
+		var addr oid.Address
+
+		empty := true
+		called := false
+		btoken := bearerToken(ctx)
+		addr.SetContainer(bktInfo.CID)
+
+		errIter := resSearch.Iterate(func(id oid.ID) bool {
+			called = true
+
+			if empty {
+				bufZip = make([]byte, 3<<20) // the same as for upload
+			}
+			empty = false
+
+			addr.SetObject(id)
+			if err = h.zipObject(ctx, zipWriter, addr, btoken, bufZip); err != nil {
+				log.Error(logs.FailedToAddObjectToArchive, zap.String("oid", id.EncodeToString()), zap.Error(err))
+			}
+
+			return false
+		})
+		if errIter != nil {
+			log.Error(logs.IteratingOverSelectedObjectsFailed, zap.Error(errIter))
+		} else if !called {
+			log.Error(logs.ObjectsNotFound)
+		}
+
+		if err = zipWriter.Close(); err != nil {
+			log.Error(logs.CloseZipWriter, zap.Error(err))
+		}
+	})
+}
+
+func (h *Handler) zipObject(ctx context.Context, zipWriter *zip.Writer, addr oid.Address, btoken *bearer.Token, bufZip []byte) error {
+	prm := PrmObjectGet{
+		PrmAuth: PrmAuth{
+			BearerToken: btoken,
+		},
+		Address: addr,
+	}
+
+	resGet, err := h.frostfs.GetObject(ctx, prm)
+	if err != nil {
+		return fmt.Errorf("get FrostFS object: %v", err)
+	}
+
+	objWriter, err := h.addObjectToZip(zipWriter, &resGet.Header)
+	if err != nil {
+		return fmt.Errorf("zip create header: %v", err)
+	}
+
+	if _, err = io.CopyBuffer(objWriter, resGet.Payload, bufZip); err != nil {
+		return fmt.Errorf("copy object payload to zip file: %v", err)
+	}
+
+	if err = resGet.Payload.Close(); err != nil {
+		return fmt.Errorf("object body close error: %w", err)
+	}
+
+	if err = zipWriter.Flush(); err != nil {
+		return fmt.Errorf("flush zip writer: %v", err)
+	}
+
+	return nil
+}
+
+func getZipFilePath(obj *object.Object) string {
+	for _, attr := range obj.Attributes() {
+		if attr.Key() == object.AttributeFilePath {
+			return attr.Value()
+		}
+	}
+
+	return ""
+}

internal/handler/filter.go

@@ -0,0 +1,57 @@
+package handler
+
+import (
+	"bytes"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]string, error) {
+	var err error
+	result := make(map[string]string)
+	prefix := []byte(utils.UserAttributeHeaderPrefix)
+
+	header.VisitAll(func(key, val []byte) {
+		// checks that the key and the val not empty
+		if len(key) == 0 || len(val) == 0 {
+			return
+		}
+
+		// checks that the key has attribute prefix
+		if !bytes.HasPrefix(key, prefix) {
+			return
+		}
+
+		// removing attribute prefix
+		clearKey := bytes.TrimPrefix(key, prefix)
+
+		clearKey = utils.TransformIfSystem(clearKey)
+
+		// checks that the attribute key is not empty
+		if len(clearKey) == 0 {
+			return
+		}
+
+		// check if key gets duplicated
+		// return error containing full key name (with prefix)
+		if _, ok := result[string(clearKey)]; ok {
+			err = fmt.Errorf("key duplication error: %s", string(key))
+			return
+		}
+
+		// make string representation of key / val
+		k, v := string(clearKey), string(val)
+
+		result[k] = v
+
+		l.Debug(logs.AddAttributeToResultObject,
+			zap.String("key", k),
+			zap.String("val", v))
+	})
+
+	return result, err
+}

internal/handler/filter_test.go

@@ -0,0 +1,53 @@
+//go:build !integration
+
+package handler
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+func TestFilter(t *testing.T) {
+	log := zap.NewNop()
+
+	t.Run("duplicate keys error", func(t *testing.T) {
+		req := &fasthttp.RequestHeader{}
+		req.DisableNormalizing()
+		req.Add("X-Attribute-DupKey", "first-value")
+		req.Add("X-Attribute-DupKey", "second-value")
+		_, err := filterHeaders(log, req)
+		require.Error(t, err)
+	})
+
+	t.Run("duplicate system keys error", func(t *testing.T) {
+		req := &fasthttp.RequestHeader{}
+		req.DisableNormalizing()
+		req.Add("X-Attribute-System-DupKey", "first-value")
+		req.Add("X-Attribute-System-DupKey", "second-value")
+		_, err := filterHeaders(log, req)
+		require.Error(t, err)
+	})
+
+	req := &fasthttp.RequestHeader{}
+	req.DisableNormalizing()
+
+	req.Set("X-Attribute-System-Expiration-Epoch1", "101")
+	req.Set("X-Attribute-SYSTEM-Expiration-Epoch2", "102")
+	req.Set("X-Attribute-system-Expiration-Epoch3", "103")
+	req.Set("X-Attribute-MyAttribute", "value")
+
+	expected := map[string]string{
+		"__SYSTEM__EXPIRATION_EPOCH1": "101",
+		"MyAttribute":                 "value",
+		"__SYSTEM__EXPIRATION_EPOCH3": "103",
+		"__SYSTEM__EXPIRATION_EPOCH2": "102",
+	}
+
+	result, err := filterHeaders(log, req)
+	require.NoError(t, err)
+
+	require.Equal(t, expected, result)
+}

internal/handler/frostfs_mock.go

@@ -0,0 +1,275 @@
+package handler
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+)
+
+type TestFrostFS struct {
+	objects    map[string]*object.Object
+	containers map[string]*container.Container
+	accessList map[string]bool
+	key        *keys.PrivateKey
+}
+
+func NewTestFrostFS(key *keys.PrivateKey) *TestFrostFS {
+	return &TestFrostFS{
+		objects:    make(map[string]*object.Object),
+		containers: make(map[string]*container.Container),
+		accessList: make(map[string]bool),
+		key:        key,
+	}
+}
+
+func (t *TestFrostFS) ContainerID(name string) (*cid.ID, error) {
+	for id, cnr := range t.containers {
+		if container.Name(*cnr) == name {
+			var cnrID cid.ID
+			return &cnrID, cnrID.DecodeString(id)
+		}
+	}
+	return nil, fmt.Errorf("not found")
+}
+
+func (t *TestFrostFS) SetContainer(cnrID cid.ID, cnr *container.Container) {
+	t.containers[cnrID.EncodeToString()] = cnr
+}
+
+// AllowUserOperation grants access to object operations.
+// Empty userID and objID means any user and object respectively.
+func (t *TestFrostFS) AllowUserOperation(cnrID cid.ID, userID user.ID, op acl.Op, objID oid.ID) {
+	t.accessList[fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, objID)] = true
+}
+
+func (t *TestFrostFS) Container(_ context.Context, prm PrmContainer) (*container.Container, error) {
+	for k, v := range t.containers {
+		if k == prm.ContainerID.EncodeToString() {
+			return v, nil
+		}
+	}
+
+	return nil, fmt.Errorf("container not found %s", prm.ContainerID)
+}
+
+func (t *TestFrostFS) requestOwner(btoken *bearer.Token) user.ID {
+	if btoken != nil {
+		return bearer.ResolveIssuer(*btoken)
+	}
+
+	var owner user.ID
+	user.IDFromKey(&owner, t.key.PrivateKey.PublicKey)
+	return owner
+}
+
+func (t *TestFrostFS) retrieveObject(addr oid.Address, btoken *bearer.Token) (*object.Object, error) {
+	sAddr := addr.EncodeToString()
+
+	if obj, ok := t.objects[sAddr]; ok {
+		owner := t.requestOwner(btoken)
+
+		if !t.isAllowed(addr.Container(), owner, acl.OpObjectGet, addr.Object()) {
+			return nil, ErrAccessDenied
+		}
+
+		return obj, nil
+	}
+
+	return nil, fmt.Errorf("%w: %s", &apistatus.ObjectNotFound{}, addr)
+}
+
+func (t *TestFrostFS) HeadObject(_ context.Context, prm PrmObjectHead) (*object.Object, error) {
+	return t.retrieveObject(prm.Address, prm.BearerToken)
+}
+
+func (t *TestFrostFS) GetObject(_ context.Context, prm PrmObjectGet) (*Object, error) {
+	obj, err := t.retrieveObject(prm.Address, prm.BearerToken)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Object{
+		Header:  *obj,
+		Payload: io.NopCloser(bytes.NewReader(obj.Payload())),
+	}, nil
+}
+
+func (t *TestFrostFS) RangeObject(_ context.Context, prm PrmObjectRange) (io.ReadCloser, error) {
+	obj, err := t.retrieveObject(prm.Address, prm.BearerToken)
+	if err != nil {
+		return nil, err
+	}
+
+	off := prm.PayloadRange[0]
+	payload := obj.Payload()[off : off+prm.PayloadRange[1]]
+	return io.NopCloser(bytes.NewReader(payload)), nil
+}
+
+func (t *TestFrostFS) CreateObject(_ context.Context, prm PrmObjectCreate) (oid.ID, error) {
+	b := make([]byte, 32)
+	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+		return oid.ID{}, err
+	}
+	var id oid.ID
+	id.SetSHA256(sha256.Sum256(b))
+	prm.Object.SetID(id)
+
+	attrs := prm.Object.Attributes()
+	if prm.ClientCut {
+		a := object.NewAttribute()
+		a.SetKey("s3-client-cut")
+		a.SetValue("true")
+		attrs = append(attrs, *a)
+	}
+
+	prm.Object.SetAttributes(attrs...)
+
+	if prm.Payload != nil {
+		all, err := io.ReadAll(prm.Payload)
+		if err != nil {
+			return oid.ID{}, err
+		}
+		prm.Object.SetPayload(all)
+		prm.Object.SetPayloadSize(uint64(len(all)))
+		var hash checksum.Checksum
+		checksum.Calculate(&hash, checksum.SHA256, all)
+		prm.Object.SetPayloadChecksum(hash)
+	}
+
+	cnrID, _ := prm.Object.ContainerID()
+	objID, _ := prm.Object.ID()
+
+	owner := t.requestOwner(prm.BearerToken)
+
+	if !t.isAllowed(cnrID, owner, acl.OpObjectPut, objID) {
+		return oid.ID{}, ErrAccessDenied
+	}
+
+	addr := newAddress(cnrID, objID)
+	t.objects[addr.EncodeToString()] = prm.Object
+	return objID, nil
+}
+
+type resObjectSearchMock struct {
+	res []oid.ID
+}
+
+func (r *resObjectSearchMock) Read(buf []oid.ID) (int, error) {
+	for i := range buf {
+		if i > len(r.res)-1 {
+			return len(r.res), io.EOF
+		}
+		buf[i] = r.res[i]
+	}
+
+	r.res = r.res[len(buf):]
+
+	return len(buf), nil
+}
+
+func (r *resObjectSearchMock) Iterate(f func(oid.ID) bool) error {
+	for _, id := range r.res {
+		if f(id) {
+			return nil
+		}
+	}
+
+	return nil
+}
+
+func (r *resObjectSearchMock) Close() {}
+
+func (t *TestFrostFS) SearchObjects(_ context.Context, prm PrmObjectSearch) (ResObjectSearch, error) {
+	if !t.isAllowed(prm.Container, t.requestOwner(prm.BearerToken), acl.OpObjectSearch, oid.ID{}) {
+		return nil, ErrAccessDenied
+	}
+
+	cidStr := prm.Container.EncodeToString()
+	var res []oid.ID
+
+	if len(prm.Filters) == 1 { // match root filter
+		for k, v := range t.objects {
+			if strings.Contains(k, cidStr) {
+				id, _ := v.ID()
+				res = append(res, id)
+			}
+		}
+		return &resObjectSearchMock{res: res}, nil
+	}
+
+	filter := prm.Filters[1]
+	if len(prm.Filters) != 2 ||
+		filter.Operation() != object.MatchCommonPrefix && filter.Operation() != object.MatchStringEqual {
+		return nil, fmt.Errorf("usupported filters")
+	}
+
+	for k, v := range t.objects {
+		if strings.Contains(k, cidStr) && isMatched(v.Attributes(), filter) {
+			id, _ := v.ID()
+			res = append(res, id)
+		}
+	}
+
+	return &resObjectSearchMock{res: res}, nil
+}
+
+func (t *TestFrostFS) InitMultiObjectReader(context.Context, PrmInitMultiObjectReader) (io.Reader, error) {
+	return nil, nil
+}
+
+func isMatched(attributes []object.Attribute, filter object.SearchFilter) bool {
+	for _, attr := range attributes {
+		if attr.Key() == filter.Header() {
+			switch filter.Operation() {
+			case object.MatchStringEqual:
+				return attr.Value() == filter.Value()
+			case object.MatchCommonPrefix:
+				return strings.HasPrefix(attr.Value(), filter.Value())
+			default:
+				return false
+			}
+		}
+	}
+
+	return false
+}
+
+func (t *TestFrostFS) GetEpochDurations(context.Context) (*utils.EpochDurations, error) {
+	return &utils.EpochDurations{
+		CurrentEpoch:  10,
+		MsPerBlock:    1000,
+		BlockPerEpoch: 100,
+	}, nil
+}
+
+func (t *TestFrostFS) isAllowed(cnrID cid.ID, userID user.ID, op acl.Op, objID oid.ID) bool {
+	keysToCheck := []string{
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, objID),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, oid.ID{}),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, user.ID{}, op, objID),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, user.ID{}, op, oid.ID{}),
+	}
+
+	for _, key := range keysToCheck {
+		if t.accessList[key] {
+			return true
+		}
+	}
+	return false
+}

internal/handler/handler.go

@@ -0,0 +1,409 @@
+package handler
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/url"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+	"github.com/panjf2000/ants/v2"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type Config interface {
+	DefaultTimestamp() bool
+	ZipCompression() bool
+	ClientCut() bool
+	IndexPageEnabled() bool
+	IndexPageTemplate() string
+	BufferMaxSizeForPut() uint64
+	NamespaceHeader() string
+	EnableFilepathFallback() bool
+}
+
+// PrmContainer groups parameters of FrostFS.Container operation.
+type PrmContainer struct {
+	// Container identifier.
+	ContainerID cid.ID
+}
+
+// PrmAuth groups authentication parameters for the FrostFS operation.
+type PrmAuth struct {
+	// Bearer token to be used for the operation. Overlaps PrivateKey. Optional.
+	BearerToken *bearer.Token
+}
+
+// PrmObjectHead groups parameters of FrostFS.HeadObject operation.
+type PrmObjectHead struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Address to read the object header from.
+	Address oid.Address
+}
+
+// PrmObjectGet groups parameters of FrostFS.GetObject operation.
+type PrmObjectGet struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Address to read the object header from.
+	Address oid.Address
+}
+
+// PrmObjectRange groups parameters of FrostFS.RangeObject operation.
+type PrmObjectRange struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Address to read the object header from.
+	Address oid.Address
+
+	// Offset-length range of the object payload to be read.
+	PayloadRange [2]uint64
+}
+
+// Object represents FrostFS object.
+type Object struct {
+	// Object header (doesn't contain payload).
+	Header object.Object
+
+	// Object payload part encapsulated in io.Reader primitive.
+	// Returns ErrAccessDenied on read access violation.
+	Payload io.ReadCloser
+}
+
+// PrmObjectCreate groups parameters of FrostFS.CreateObject operation.
+type PrmObjectCreate struct {
+	// Authentication parameters.
+	PrmAuth
+
+	Object *object.Object
+
+	// Object payload encapsulated in io.Reader primitive.
+	Payload io.Reader
+
+	// Enables client side object preparing.
+	ClientCut bool
+
+	// Disables using Tillich-Zémor hash for payload.
+	WithoutHomomorphicHash bool
+
+	// Sets max buffer size to read payload.
+	BufferMaxSize uint64
+}
+
+// PrmObjectSearch groups parameters of FrostFS.sear SearchObjects operation.
+type PrmObjectSearch struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Container to select the objects from.
+	Container cid.ID
+
+	Filters object.SearchFilters
+}
+
+type PrmInitMultiObjectReader struct {
+	// payload range
+	Off, Ln uint64
+
+	Addr   oid.Address
+	Bearer *bearer.Token
+}
+
+type ResObjectSearch interface {
+	Read(buf []oid.ID) (int, error)
+	Iterate(f func(oid.ID) bool) error
+	Close()
+}
+
+var (
+	// ErrAccessDenied is returned from FrostFS in case of access violation.
+	ErrAccessDenied = errors.New("access denied")
+	// ErrGatewayTimeout is returned from FrostFS in case of timeout, deadline exceeded etc.
+	ErrGatewayTimeout = errors.New("gateway timeout")
+)
+
+// FrostFS represents virtual connection to FrostFS network.
+type FrostFS interface {
+	Container(context.Context, PrmContainer) (*container.Container, error)
+	HeadObject(context.Context, PrmObjectHead) (*object.Object, error)
+	GetObject(context.Context, PrmObjectGet) (*Object, error)
+	RangeObject(context.Context, PrmObjectRange) (io.ReadCloser, error)
+	CreateObject(context.Context, PrmObjectCreate) (oid.ID, error)
+	SearchObjects(context.Context, PrmObjectSearch) (ResObjectSearch, error)
+	InitMultiObjectReader(ctx context.Context, p PrmInitMultiObjectReader) (io.Reader, error)
+
+	utils.EpochInfoFetcher
+}
+
+type ContainerResolver interface {
+	Resolve(ctx context.Context, name string) (*cid.ID, error)
+}
+
+type Handler struct {
+	log               *zap.Logger
+	frostfs           FrostFS
+	ownerID           *user.ID
+	config            Config
+	containerResolver ContainerResolver
+	tree              layer.TreeService
+	cache             *cache.BucketCache
+	workerPool        *ants.Pool
+}
+
+type AppParams struct {
+	Logger   *zap.Logger
+	FrostFS  FrostFS
+	Owner    *user.ID
+	Resolver ContainerResolver
+	Cache    *cache.BucketCache
+}
+
+func New(params *AppParams, config Config, tree layer.TreeService, workerPool *ants.Pool) *Handler {
+	return &Handler{
+		log:               params.Logger,
+		frostfs:           params.FrostFS,
+		ownerID:           params.Owner,
+		config:            config,
+		containerResolver: params.Resolver,
+		tree:              tree,
+		cache:             params.Cache,
+		workerPool:        workerPool,
+	}
+}
+
+// byNativeAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+// prepares request and object address to it.
+func (h *Handler) byNativeAddress(ctx context.Context, req request, cnrID cid.ID, objID oid.ID, handler func(context.Context, request, oid.Address)) {
+	addr := newAddress(cnrID, objID)
+	handler(ctx, req, addr)
+}
+
+// byS3Path is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+// resolves object address from S3-like path <bucket name>/<object key>.
+func (h *Handler) byS3Path(ctx context.Context, req request, cnrID cid.ID, path string, handler func(context.Context, request, oid.Address)) {
+	c, log := req.RequestCtx, req.log
+
+	foundOID, err := h.tree.GetLatestVersion(ctx, &cnrID, path)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	if foundOID.IsDeleteMarker {
+		log.Error(logs.ObjectWasDeleted)
+		response.Error(c, "object deleted", fasthttp.StatusNotFound)
+		return
+	}
+
+	addr := newAddress(cnrID, foundOID.OID)
+	handler(ctx, h.newRequest(c, log), addr)
+}
+
+// byAttribute is a wrapper similar to byNativeAddress.
+func (h *Handler) byAttribute(c *fasthttp.RequestCtx, handler func(context.Context, request, oid.Address)) {
+	cidParam, _ := c.UserValue("cid").(string)
+	key, _ := c.UserValue("attr_key").(string)
+	val, _ := c.UserValue("attr_val").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log)
+
+	key, err := url.QueryUnescape(key)
+	if err != nil {
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_key", key), zap.Error(err))
+		response.Error(c, "could not unescape attr_key: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	val, err = url.QueryUnescape(val)
+	if err != nil {
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_val", val), zap.Error(err))
+		response.Error(c, "could not unescape attr_val: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	log = log.With(zap.String("cid", cidParam), zap.String("attr_key", key), zap.String("attr_val", val))
+
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	objID, err := h.findObjectByAttribute(ctx, log, bktInfo.CID, key, val)
+	if err != nil {
+		if errors.Is(err, io.EOF) {
+			response.Error(c, err.Error(), fasthttp.StatusNotFound)
+			return
+		}
+
+		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	var addr oid.Address
+	addr.SetContainer(bktInfo.CID)
+	addr.SetObject(objID)
+
+	handler(ctx, h.newRequest(c, log), addr)
+}
+
+func (h *Handler) findObjectByAttribute(ctx context.Context, log *zap.Logger, cnrID cid.ID, attrKey, attrVal string) (oid.ID, error) {
+	res, err := h.search(ctx, cnrID, attrKey, attrVal, object.MatchStringEqual)
+	if err != nil {
+		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
+		return oid.ID{}, fmt.Errorf("could not search for objects: %w", err)
+	}
+	defer res.Close()
+
+	buf := make([]oid.ID, 1)
+
+	n, err := res.Read(buf)
+	if n == 0 {
+		switch {
+		case errors.Is(err, io.EOF) && h.needSearchByFileName(attrKey, attrVal):
+			log.Debug(logs.ObjectNotFoundByFilePathTrySearchByFileName)
+			return h.findObjectByAttribute(ctx, log, cnrID, attrFileName, attrVal)
+		case errors.Is(err, io.EOF):
+			log.Error(logs.ObjectNotFound, zap.Error(err))
+			return oid.ID{}, fmt.Errorf("object not found: %w", err)
+		default:
+			log.Error(logs.ReadObjectListFailed, zap.Error(err))
+			return oid.ID{}, fmt.Errorf("read object list failed: %w", err)
+		}
+	}
+
+	return buf[0], nil
+}
+
+func (h *Handler) needSearchByFileName(key, val string) bool {
+	if key != attrFilePath || !h.config.EnableFilepathFallback() {
+		return false
+	}
+
+	return strings.HasPrefix(val, "/") && strings.Count(val, "/") == 1 || !strings.Contains(val, "/")
+}
+
+// resolveContainer decode container id, if it's not a valid container id
+// then trey to resolve name using provided resolver.
+func (h *Handler) resolveContainer(ctx context.Context, containerID string) (*cid.ID, error) {
+	cnrID := new(cid.ID)
+	err := cnrID.DecodeString(containerID)
+	if err != nil {
+		cnrID, err = h.containerResolver.Resolve(ctx, containerID)
+		if err != nil && strings.Contains(err.Error(), "not found") {
+			err = fmt.Errorf("%w: %s", new(apistatus.ContainerNotFound), err.Error())
+		}
+	}
+	return cnrID, err
+}
+
+func (h *Handler) getBucketInfo(ctx context.Context, containerName string, log *zap.Logger) (*data.BucketInfo, error) {
+	ns, err := middleware.GetNamespace(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if bktInfo := h.cache.Get(ns, containerName); bktInfo != nil {
+		return bktInfo, nil
+	}
+
+	cnrID, err := h.resolveContainer(ctx, containerName)
+	if err != nil {
+		return nil, err
+	}
+
+	bktInfo, err := h.readContainer(ctx, *cnrID)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = h.cache.Put(bktInfo); err != nil {
+		log.Warn(logs.CouldntPutBucketIntoCache,
+			zap.String("bucket name", bktInfo.Name),
+			zap.Stringer("bucket cid", bktInfo.CID),
+			zap.Error(err))
+	}
+
+	return bktInfo, nil
+}
+
+func (h *Handler) readContainer(ctx context.Context, cnrID cid.ID) (*data.BucketInfo, error) {
+	prm := PrmContainer{ContainerID: cnrID}
+	res, err := h.frostfs.Container(ctx, prm)
+	if err != nil {
+		return nil, fmt.Errorf("get frostfs container '%s': %w", cnrID.String(), err)
+	}
+
+	bktInfo := &data.BucketInfo{
+		CID:  cnrID,
+		Name: cnrID.EncodeToString(),
+	}
+
+	if domain := container.ReadDomain(*res); domain.Name() != "" {
+		bktInfo.Name = domain.Name()
+		bktInfo.Zone = domain.Zone()
+	}
+
+	bktInfo.HomomorphicHashDisabled = container.IsHomomorphicHashingDisabled(*res)
+
+	return bktInfo, err
+}
+
+func (h *Handler) browseIndex(c *fasthttp.RequestCtx, isNativeList bool) {
+	if !h.config.IndexPageEnabled() {
+		c.SetStatusCode(fasthttp.StatusNotFound)
+		return
+	}
+
+	cidURLParam := c.UserValue("cid").(string)
+	oidURLParam := c.UserValue("oid").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(zap.String("cid", cidURLParam), zap.String("oid", oidURLParam))
+
+	unescapedKey, err := url.QueryUnescape(oidURLParam)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	bktInfo, err := h.getBucketInfo(ctx, cidURLParam, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	listFunc := h.getDirObjectsS3
+	if isNativeList {
+		// tree probe failed, trying to use native
+		listFunc = h.getDirObjectsNative
+	}
+
+	h.browseObjects(c, browseParams{
+		bucketInfo:  bktInfo,
+		prefix:      unescapedKey,
+		listObjects: listFunc,
+		isNative:    isNativeList,
+	})
+}

internal/handler/handler_fuzz_test.go

@@ -0,0 +1,580 @@
+//go:build gofuzz
+// +build gofuzz
+
+package handler
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	go_fuzz_utils "github.com/trailofbits/go-fuzz-utils"
+	"github.com/valyala/fasthttp"
+)
+
+const (
+	fuzzSuccessExitCode = 0
+	fuzzFailExitCode    = -1
+)
+
+func prepareStrings(tp *go_fuzz_utils.TypeProvider, count int) ([]string, error) {
+	array := make([]string, count)
+	var err error
+
+	for i := 0; i < count; i++ {
+		err = tp.Reset()
+		if err != nil {
+			return nil, err
+		}
+
+		array[i], err = tp.GetString()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return array, nil
+}
+
+func prepareBools(tp *go_fuzz_utils.TypeProvider, count int) ([]bool, error) {
+	array := make([]bool, count)
+	var err error
+
+	for i := 0; i < count; i++ {
+		err = tp.Reset()
+		if err != nil {
+			return nil, err
+		}
+
+		array[i], err = tp.GetBool()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return array, nil
+}
+
+func getRandomDeterministicPositiveIntInRange(tp *go_fuzz_utils.TypeProvider, max int) (int, error) {
+	count, err := tp.GetInt()
+	if err != nil {
+		return -1, err
+	}
+	count = count % max
+	if count < 0 {
+		count += max
+	}
+	return count, nil
+}
+
+func generateHeaders(tp *go_fuzz_utils.TypeProvider, r *fasthttp.Request, params []string) error {
+	count, err := tp.GetInt()
+	if err != nil {
+		return err
+	}
+	count = count % len(params)
+	if count < 0 {
+		count += len(params)
+	}
+
+	for i := 0; i < count; i++ {
+		position, err := tp.GetInt()
+		if err != nil {
+			return err
+		}
+		position = position % len(params)
+		if position < 0 {
+			position += len(params)
+		}
+
+		v, err := tp.GetString()
+		if err != nil {
+			return err
+		}
+
+		r.Header.Set(params[position], v)
+
+	}
+
+	return nil
+}
+
+func maybeFillRandom(tp *go_fuzz_utils.TypeProvider, initValue string) (string, error) {
+	rnd, err := tp.GetBool()
+	if err != nil {
+		return "", err
+	}
+	if rnd == true {
+		initValue, err = tp.GetString()
+		if err != nil {
+			return "", err
+		}
+	}
+	return initValue, nil
+}
+
+func upload(tp *go_fuzz_utils.TypeProvider) (context.Context, *handlerContext, cid.ID, *fasthttp.RequestCtx, string, string, string, error) {
+	hc, err := prepareHandlerContext()
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	aclList := []acl.Basic{
+		acl.Private,
+		acl.PrivateExtended,
+		acl.PublicRO,
+		acl.PublicROExtended,
+		acl.PublicRW,
+		acl.PublicRWExtended,
+		acl.PublicAppend,
+		acl.PublicAppendExtended,
+	}
+
+	pos, err := getRandomDeterministicPositiveIntInRange(tp, len(aclList))
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+	acl := aclList[pos]
+
+	strings, err := prepareStrings(tp, 6)
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+	bktName := strings[0]
+	objFileName := strings[1]
+	valAttr := strings[2]
+	keyAttr := strings[3]
+
+	if len(bktName) == 0 {
+		return nil, nil, cid.ID{}, nil, "", "", "", errors.New("not enought buckets")
+	}
+
+	cnrID, cnr, err := hc.prepareContainer(bktName, acl)
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	hc.frostfs.SetContainer(cnrID, cnr)
+
+	ctx := context.Background()
+	ctx = middleware.SetNamespace(ctx, "")
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", cnrID.EncodeToString())
+
+	attributes := map[string]string{
+		object.AttributeFileName: objFileName,
+		keyAttr:                  valAttr,
+	}
+
+	var buff bytes.Buffer
+	w := multipart.NewWriter(&buff)
+	fw, err := w.CreateFormFile("file", attributes[object.AttributeFileName])
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	content, err := tp.GetBytes()
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	if _, err = io.Copy(fw, bytes.NewReader(content)); err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	if err = w.Close(); err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	r.Request.SetBodyStream(&buff, buff.Len())
+	r.Request.Header.Set("Content-Type", w.FormDataContentType())
+	r.Request.Header.Set("X-Attribute-"+keyAttr, valAttr)
+
+	err = generateHeaders(tp, &r.Request, []string{"X-Attribute-", "X-Attribute-DupKey", "X-Attribute-MyAttribute", "X-Attribute-System-DupKey", "X-Attribute-System-Expiration-Epoch1", "X-Attribute-SYSTEM-Expiration-Epoch2", "X-Attribute-system-Expiration-Epoch3", "X-Attribute-User-Attribute", "X-Attribute-", "X-Attribute-FileName", "X-Attribute-FROSTFS", "X-Attribute-neofs", "X-Attribute-SYSTEM", "X-Attribute-System-Expiration-Duration", "X-Attribute-System-Expiration-Epoch", "X-Attribute-System-Expiration-RFC3339", "X-Attribute-System-Expiration-Timestamp", "X-Attribute-Timestamp", "X-Attribute-" + strings[4], "X-Attribute-System-" + strings[5]})
+	if err != nil {
+		return nil, nil, cid.ID{}, nil, "", "", "", err
+	}
+
+	hc.Handler().Upload(r)
+
+	if r.Response.StatusCode() != http.StatusOK {
+		return nil, nil, cid.ID{}, nil, "", "", "", errors.New("error on upload")
+	}
+
+	return ctx, hc, cnrID, r, objFileName, keyAttr, valAttr, nil
+}
+
+func InitFuzzUpload() {
+
+}
+
+func DoFuzzUpload(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	_, _, _, _, _, _, _, err = upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzUpload(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzUpload(data)
+	})
+}
+
+func downloadOrHead(tp *go_fuzz_utils.TypeProvider, ctx context.Context, hc *handlerContext, cnrID cid.ID, resp *fasthttp.RequestCtx, filename string) (*fasthttp.RequestCtx, error) {
+
+	var putRes putResponse
+
+	defer func() {
+		if r := recover(); r != nil {
+			panic(resp)
+		}
+	}()
+
+	data := resp.Response.Body()
+	err := json.Unmarshal(data, &putRes)
+
+	if err != nil {
+		return nil, err
+	}
+
+	obj := hc.frostfs.objects[putRes.ContainerID+"/"+putRes.ObjectID]
+	attr := object.NewAttribute()
+	attr.SetKey(object.AttributeFilePath)
+
+	filename, err = maybeFillRandom(tp, filename)
+	if err != nil {
+		return nil, err
+	}
+
+	attr.SetValue(filename)
+	obj.SetAttributes(append(obj.Attributes(), *attr)...)
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+
+	cid := cnrID.EncodeToString()
+	cid, err = maybeFillRandom(tp, cid)
+	if err != nil {
+		return nil, err
+	}
+	oid := putRes.ObjectID
+	oid, err = maybeFillRandom(tp, oid)
+	if err != nil {
+		return nil, err
+	}
+	r.SetUserValue("cid", cid)
+	r.SetUserValue("oid", oid)
+
+	rnd, err := tp.GetBool()
+	if err != nil {
+		return nil, err
+	}
+	if rnd == true {
+		r.SetUserValue("download", "true")
+	}
+
+	return r, nil
+}
+
+func InitFuzzGet() {
+
+}
+
+func DoFuzzGet(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx, hc, cnrID, resp, filename, _, _, err := upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	r, err := downloadOrHead(tp, ctx, hc, cnrID, resp, filename)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	hc.Handler().DownloadByAddressOrBucketName(r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzGet(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzUpload(data)
+	})
+}
+
+func InitFuzzHead() {
+
+}
+
+func DoFuzzHead(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx, hc, cnrID, resp, filename, _, _, err := upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	r, err := downloadOrHead(tp, ctx, hc, cnrID, resp, filename)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	hc.Handler().HeadByAddressOrBucketName(r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzHead(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzHead(data)
+	})
+}
+
+func InitFuzzDownloadByAttribute() {
+
+}
+
+func DoFuzzDownloadByAttribute(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx, hc, cnrID, _, _, attrKey, attrVal, err := upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	cid := cnrID.EncodeToString()
+	cid, err = maybeFillRandom(tp, cid)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	attrKey, err = maybeFillRandom(tp, attrKey)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	attrVal, err = maybeFillRandom(tp, attrVal)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", cid)
+	r.SetUserValue("attr_key", attrKey)
+	r.SetUserValue("attr_val", attrVal)
+
+	hc.Handler().DownloadByAttribute(r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzDownloadByAttribute(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzDownloadByAttribute(data)
+	})
+}
+
+func InitFuzzHeadByAttribute() {
+
+}
+
+func DoFuzzHeadByAttribute(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx, hc, cnrID, _, _, attrKey, attrVal, err := upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	cid := cnrID.EncodeToString()
+	cid, err = maybeFillRandom(tp, cid)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	attrKey, err = maybeFillRandom(tp, attrKey)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	attrVal, err = maybeFillRandom(tp, attrVal)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", cid)
+	r.SetUserValue("attr_key", attrKey)
+	r.SetUserValue("attr_val", attrVal)
+
+	hc.Handler().HeadByAttribute(r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzHeadByAttribute(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzHeadByAttribute(data)
+	})
+}
+
+func InitFuzzDownloadZipped() {
+
+}
+
+func DoFuzzDownloadZipped(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx, hc, cnrID, _, _, _, _, err := upload(tp)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	cid := cnrID.EncodeToString()
+	cid, err = maybeFillRandom(tp, cid)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	prefix := ""
+	prefix, err = maybeFillRandom(tp, prefix)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", cid)
+	r.SetUserValue("prefix", prefix)
+
+	hc.Handler().DownloadZipped(r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzDownloadZipped(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzDownloadZipped(data)
+	})
+}
+
+func InitFuzzStoreBearerTokenAppCtx() {
+
+}
+
+func DoFuzzStoreBearerTokenAppCtx(input []byte) int {
+	// FUZZER INIT
+	if len(input) < 100 {
+		return fuzzFailExitCode
+	}
+
+	tp, err := go_fuzz_utils.NewTypeProvider(input)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	prefix := ""
+	prefix, err = maybeFillRandom(tp, prefix)
+	if err != nil {
+		return fuzzFailExitCode
+	}
+
+	ctx := context.Background()
+	ctx = middleware.SetNamespace(ctx, "")
+
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+
+	strings, err := prepareStrings(tp, 3)
+
+	rand, err := prepareBools(tp, 2)
+
+	if rand[0] == true {
+		r.Request.Header.Set(fasthttp.HeaderAuthorization, "Bearer"+strings[0])
+	} else if rand[1] == true {
+		r.Request.Header.SetCookie(fasthttp.HeaderAuthorization, "Bearer"+strings[1])
+	} else {
+		r.Request.Header.Set(fasthttp.HeaderAuthorization, "Bearer"+strings[0])
+		r.Request.Header.SetCookie(fasthttp.HeaderAuthorization, "Bearer"+strings[1])
+	}
+
+	tokens.StoreBearerTokenAppCtx(ctx, r)
+
+	return fuzzSuccessExitCode
+}
+
+func FuzzStoreBearerTokenAppCtx(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzStoreBearerTokenAppCtx(data)
+	})
+}

internal/handler/handler_test.go

@@ -0,0 +1,496 @@
+package handler
+
+import (
+	"archive/zip"
+	"bytes"
+	"context"
+	"encoding/json"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"testing"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/panjf2000/ants/v2"
+	"github.com/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type treeServiceMock struct {
+	system map[string]map[string]*data.BaseNodeVersion
+}
+
+func newTreeService() *treeServiceMock {
+	return &treeServiceMock{
+		system: make(map[string]map[string]*data.BaseNodeVersion),
+	}
+}
+
+func (t *treeServiceMock) CheckSettingsNodeExists(context.Context, *data.BucketInfo) error {
+	_, ok := t.system["bucket-settings"]
+	if !ok {
+		return layer.ErrNodeNotFound
+	}
+	return nil
+}
+
+func (t *treeServiceMock) GetSubTreeByPrefix(context.Context, *data.BucketInfo, string, bool) ([]data.NodeInfo, string, error) {
+	return nil, "", nil
+}
+
+func (t *treeServiceMock) GetLatestVersion(context.Context, *cid.ID, string) (*data.NodeVersion, error) {
+	return nil, nil
+}
+
+type configMock struct {
+	additionalSearch bool
+}
+
+func (c *configMock) DefaultTimestamp() bool {
+	return false
+}
+
+func (c *configMock) ZipCompression() bool {
+	return false
+}
+
+func (c *configMock) IndexPageEnabled() bool {
+	return false
+}
+
+func (c *configMock) IndexPageTemplate() string {
+	return ""
+}
+
+func (c *configMock) IndexPageNativeTemplate() string {
+	return ""
+}
+
+func (c *configMock) ClientCut() bool {
+	return false
+}
+
+func (c *configMock) BufferMaxSizeForPut() uint64 {
+	return 0
+}
+
+func (c *configMock) NamespaceHeader() string {
+	return ""
+}
+
+func (c *configMock) EnableFilepathFallback() bool {
+	return c.additionalSearch
+}
+
+type handlerContext struct {
+	key   *keys.PrivateKey
+	owner user.ID
+
+	h       *Handler
+	frostfs *TestFrostFS
+	tree    *treeServiceMock
+	cfg     *configMock
+}
+
+func (hc *handlerContext) Handler() *Handler {
+	return hc.h
+}
+
+func prepareHandlerContext() (*handlerContext, error) {
+	logger, err := zap.NewDevelopment()
+	if err != nil {
+		return nil, err
+	}
+
+	key, err := keys.NewPrivateKey()
+	if err != nil {
+		return nil, err
+	}
+
+	var owner user.ID
+	user.IDFromKey(&owner, key.PrivateKey.PublicKey)
+
+	testFrostFS := NewTestFrostFS(key)
+
+	testResolver := &resolver.Resolver{Name: "test_resolver"}
+	testResolver.SetResolveFunc(func(_ context.Context, name string) (*cid.ID, error) {
+		return testFrostFS.ContainerID(name)
+	})
+
+	params := &AppParams{
+		Logger:   logger,
+		FrostFS:  testFrostFS,
+		Owner:    &owner,
+		Resolver: testResolver,
+		Cache: cache.NewBucketCache(&cache.Config{
+			Size:     1,
+			Lifetime: 1,
+			Logger:   logger,
+		}),
+	}
+
+	treeMock := newTreeService()
+	cfgMock := &configMock{}
+
+	workerPool, err := ants.NewPool(1)
+	if err != nil {
+		return nil, err
+	}
+	handler := New(params, cfgMock, treeMock, workerPool)
+
+	return &handlerContext{
+		key:     key,
+		owner:   owner,
+		h:       handler,
+		frostfs: testFrostFS,
+		tree:    treeMock,
+		cfg:     cfgMock,
+	}, nil
+}
+
+func (hc *handlerContext) prepareContainer(name string, basicACL acl.Basic) (cid.ID, *container.Container, error) {
+	var pp netmap.PlacementPolicy
+	err := pp.DecodeString("REP 1")
+	if err != nil {
+		return cid.ID{}, nil, err
+	}
+
+	var cnr container.Container
+	cnr.Init()
+	cnr.SetOwner(hc.owner)
+	cnr.SetPlacementPolicy(pp)
+	cnr.SetBasicACL(basicACL)
+
+	var domain container.Domain
+	domain.SetName(name)
+	container.WriteDomain(&cnr, domain)
+	container.SetName(&cnr, name)
+	container.SetCreationTime(&cnr, time.Now())
+
+	cnrID := cidtest.ID()
+
+	for op := acl.OpObjectGet; op < acl.OpObjectHash; op++ {
+		hc.frostfs.AllowUserOperation(cnrID, hc.owner, op, oid.ID{})
+		if basicACL.IsOpAllowed(op, acl.RoleOthers) {
+			hc.frostfs.AllowUserOperation(cnrID, user.ID{}, op, oid.ID{})
+		}
+	}
+
+	return cnrID, &cnr, nil
+}
+
+func TestBasic(t *testing.T) {
+	hc, err := prepareHandlerContext()
+	require.NoError(t, err)
+
+	bktName := "bucket"
+	cnrID, cnr, err := hc.prepareContainer(bktName, acl.PublicRWExtended)
+	require.NoError(t, err)
+	hc.frostfs.SetContainer(cnrID, cnr)
+
+	ctx := context.Background()
+	ctx = middleware.SetNamespace(ctx, "")
+
+	content := "hello"
+	r, err := prepareUploadRequest(ctx, cnrID.EncodeToString(), content)
+	require.NoError(t, err)
+
+	hc.Handler().Upload(r)
+	require.Equal(t, r.Response.StatusCode(), http.StatusOK)
+
+	var putRes putResponse
+	err = json.Unmarshal(r.Response.Body(), &putRes)
+	require.NoError(t, err)
+
+	obj := hc.frostfs.objects[putRes.ContainerID+"/"+putRes.ObjectID]
+	attr := prepareObjectAttributes(object.AttributeFilePath, objFileName)
+	obj.SetAttributes(append(obj.Attributes(), attr)...)
+
+	t.Run("get", func(t *testing.T) {
+		r = prepareGetRequest(ctx, cnrID.EncodeToString(), putRes.ObjectID)
+		hc.Handler().DownloadByAddressOrBucketName(r)
+		require.Equal(t, content, string(r.Response.Body()))
+	})
+
+	t.Run("head", func(t *testing.T) {
+		r = prepareGetRequest(ctx, cnrID.EncodeToString(), putRes.ObjectID)
+		hc.Handler().HeadByAddressOrBucketName(r)
+		require.Equal(t, putRes.ObjectID, string(r.Response.Header.Peek(hdrObjectID)))
+		require.Equal(t, putRes.ContainerID, string(r.Response.Header.Peek(hdrContainerID)))
+	})
+
+	t.Run("get by attribute", func(t *testing.T) {
+		r = prepareGetByAttributeRequest(ctx, bktName, keyAttr, valAttr)
+		hc.Handler().DownloadByAttribute(r)
+		require.Equal(t, content, string(r.Response.Body()))
+	})
+
+	t.Run("head by attribute", func(t *testing.T) {
+		r = prepareGetByAttributeRequest(ctx, bktName, keyAttr, valAttr)
+		hc.Handler().HeadByAttribute(r)
+		require.Equal(t, putRes.ObjectID, string(r.Response.Header.Peek(hdrObjectID)))
+		require.Equal(t, putRes.ContainerID, string(r.Response.Header.Peek(hdrContainerID)))
+	})
+
+	t.Run("zip", func(t *testing.T) {
+		r = prepareGetZipped(ctx, bktName, "")
+		hc.Handler().DownloadZipped(r)
+
+		readerAt := bytes.NewReader(r.Response.Body())
+		zipReader, err := zip.NewReader(readerAt, int64(len(r.Response.Body())))
+		require.NoError(t, err)
+		require.Len(t, zipReader.File, 1)
+		require.Equal(t, objFileName, zipReader.File[0].Name)
+		f, err := zipReader.File[0].Open()
+		require.NoError(t, err)
+		defer func() {
+			inErr := f.Close()
+			require.NoError(t, inErr)
+		}()
+		data, err := io.ReadAll(f)
+		require.NoError(t, err)
+		require.Equal(t, content, string(data))
+	})
+}
+
+func TestFindObjectByAttribute(t *testing.T) {
+	hc, err := prepareHandlerContext()
+	require.NoError(t, err)
+	hc.cfg.additionalSearch = true
+
+	bktName := "bucket"
+	cnrID, cnr, err := hc.prepareContainer(bktName, acl.PublicRWExtended)
+	require.NoError(t, err)
+	hc.frostfs.SetContainer(cnrID, cnr)
+
+	ctx := context.Background()
+	ctx = middleware.SetNamespace(ctx, "")
+
+	content := "hello"
+	r, err := prepareUploadRequest(ctx, cnrID.EncodeToString(), content)
+	require.NoError(t, err)
+
+	hc.Handler().Upload(r)
+	require.Equal(t, r.Response.StatusCode(), http.StatusOK)
+
+	var putRes putResponse
+	err = json.Unmarshal(r.Response.Body(), &putRes)
+	require.NoError(t, err)
+
+	testAttrVal1 := "test-attr-val1"
+	testAttrVal2 := "test-attr-val2"
+	testAttrVal3 := "test-attr-val3"
+
+	for _, tc := range []struct {
+		name             string
+		firstAttr        object.Attribute
+		secondAttr       object.Attribute
+		reqAttrKey       string
+		reqAttrValue     string
+		err              string
+		additionalSearch bool
+	}{
+		{
+			name:             "success search by FileName",
+			firstAttr:        prepareObjectAttributes(attrFilePath, testAttrVal1),
+			secondAttr:       prepareObjectAttributes(attrFileName, testAttrVal2),
+			reqAttrKey:       attrFileName,
+			reqAttrValue:     testAttrVal2,
+			additionalSearch: false,
+		},
+		{
+			name:             "failed search by FileName",
+			firstAttr:        prepareObjectAttributes(attrFilePath, testAttrVal1),
+			secondAttr:       prepareObjectAttributes(attrFileName, testAttrVal2),
+			reqAttrKey:       attrFileName,
+			reqAttrValue:     testAttrVal3,
+			err:              "not found",
+			additionalSearch: false,
+		},
+		{
+			name:             "success search by FilePath (with additional search)",
+			firstAttr:        prepareObjectAttributes(attrFilePath, testAttrVal1),
+			secondAttr:       prepareObjectAttributes(attrFileName, testAttrVal2),
+			reqAttrKey:       attrFilePath,
+			reqAttrValue:     testAttrVal2,
+			additionalSearch: true,
+		},
+		{
+			name:             "failed by FilePath (with additional search)",
+			firstAttr:        prepareObjectAttributes(attrFilePath, testAttrVal1),
+			secondAttr:       prepareObjectAttributes(attrFileName, testAttrVal2),
+			reqAttrKey:       attrFilePath,
+			reqAttrValue:     testAttrVal3,
+			err:              "not found",
+			additionalSearch: true,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			obj := hc.frostfs.objects[putRes.ContainerID+"/"+putRes.ObjectID]
+			obj.SetAttributes(tc.firstAttr, tc.secondAttr)
+			hc.cfg.additionalSearch = tc.additionalSearch
+
+			objID, err := hc.Handler().findObjectByAttribute(ctx, hc.Handler().log, cnrID, tc.reqAttrKey, tc.reqAttrValue)
+			if tc.err != "" {
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tc.err)
+				return
+			}
+
+			require.NoError(t, err)
+			require.Equal(t, putRes.ObjectID, objID.EncodeToString())
+		})
+	}
+}
+
+func TestNeedSearchByFileName(t *testing.T) {
+	hc, err := prepareHandlerContext()
+	require.NoError(t, err)
+
+	for _, tc := range []struct {
+		name             string
+		attrKey          string
+		attrVal          string
+		additionalSearch bool
+		expected         bool
+	}{
+		{
+			name:             "need search - not contains slash",
+			attrKey:          attrFilePath,
+			attrVal:          "cat.png",
+			additionalSearch: true,
+			expected:         true,
+		},
+		{
+			name:             "need search - single lead slash",
+			attrKey:          attrFilePath,
+			attrVal:          "/cat.png",
+			additionalSearch: true,
+			expected:         true,
+		},
+		{
+			name:             "don't need search - single slash but not lead",
+			attrKey:          attrFilePath,
+			attrVal:          "cats/cat.png",
+			additionalSearch: true,
+			expected:         false,
+		},
+		{
+			name:             "don't need search - more one slash",
+			attrKey:          attrFilePath,
+			attrVal:          "/cats/cat.png",
+			additionalSearch: true,
+			expected:         false,
+		},
+		{
+			name:             "don't need search - incorrect attribute key",
+			attrKey:          attrFileName,
+			attrVal:          "cat.png",
+			additionalSearch: true,
+			expected:         false,
+		},
+		{
+			name:             "don't need search - additional search disabled",
+			attrKey:          attrFilePath,
+			attrVal:          "cat.png",
+			additionalSearch: false,
+			expected:         false,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			hc.cfg.additionalSearch = tc.additionalSearch
+
+			res := hc.h.needSearchByFileName(tc.attrKey, tc.attrVal)
+			require.Equal(t, tc.expected, res)
+		})
+	}
+}
+
+func prepareUploadRequest(ctx context.Context, bucket, content string) (*fasthttp.RequestCtx, error) {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	return r, fillMultipartBody(r, content)
+}
+
+func prepareGetRequest(ctx context.Context, bucket, objID string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("oid", objID)
+	return r
+}
+
+func prepareGetByAttributeRequest(ctx context.Context, bucket, attrKey, attrVal string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("attr_key", attrKey)
+	r.SetUserValue("attr_val", attrVal)
+	return r
+}
+
+func prepareGetZipped(ctx context.Context, bucket, prefix string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("prefix", prefix)
+	return r
+}
+
+func prepareObjectAttributes(attrKey, attrValue string) object.Attribute {
+	attr := object.NewAttribute()
+	attr.SetKey(attrKey)
+	attr.SetValue(attrValue)
+	return *attr
+}
+
+const (
+	keyAttr     = "User-Attribute"
+	valAttr     = "user value"
+	objFileName = "newFile.txt"
+)
+
+func fillMultipartBody(r *fasthttp.RequestCtx, content string) error {
+	attributes := map[string]string{
+		object.AttributeFileName: objFileName,
+		keyAttr:                  valAttr,
+	}
+
+	var buff bytes.Buffer
+	w := multipart.NewWriter(&buff)
+	fw, err := w.CreateFormFile("file", attributes[object.AttributeFileName])
+	if err != nil {
+		return err
+	}
+
+	if _, err = io.Copy(fw, bytes.NewBufferString(content)); err != nil {
+		return err
+	}
+
+	if err = w.Close(); err != nil {
+		return err
+	}
+
+	r.Request.SetBodyStream(&buff, buff.Len())
+	r.Request.Header.Set("Content-Type", w.FormDataContentType())
+	r.Request.Header.Set("X-Attribute-"+keyAttr, valAttr)
+
+	return nil
+}

internal/handler/head.go

@@ -0,0 +1,143 @@
+package handler
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"strconv"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+// max bytes needed to detect content type according to http.DetectContentType docs.
+const sizeToDetectType = 512
+
+const (
+	hdrObjectID    = "X-Object-Id"
+	hdrOwnerID     = "X-Owner-Id"
+	hdrContainerID = "X-Container-Id"
+)
+
+func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid.Address) {
+	var start = time.Now()
+
+	btoken := bearerToken(ctx)
+
+	prm := PrmObjectHead{
+		PrmAuth: PrmAuth{
+			BearerToken: btoken,
+		},
+		Address: objectAddress,
+	}
+
+	obj, err := h.frostfs.HeadObject(ctx, prm)
+	if err != nil {
+		req.handleFrostFSErr(err, start)
+		return
+	}
+
+	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(obj.PayloadSize(), 10))
+	var contentType string
+	for _, attr := range obj.Attributes() {
+		key := attr.Key()
+		val := attr.Value()
+		if !isValidToken(key) || !isValidValue(val) {
+			continue
+		}
+
+		key = utils.BackwardTransformIfSystem(key)
+
+		req.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
+		switch key {
+		case object.AttributeTimestamp:
+			value, err := strconv.ParseInt(val, 10, 64)
+			if err != nil {
+				req.log.Info(logs.CouldntParseCreationDate,
+					zap.String("key", key),
+					zap.String("val", val),
+					zap.Error(err))
+				continue
+			}
+			req.Response.Header.Set(fasthttp.HeaderLastModified, time.Unix(value, 0).UTC().Format(http.TimeFormat))
+		case object.AttributeContentType:
+			contentType = val
+		}
+	}
+
+	idsToResponse(&req.Response, obj)
+
+	if len(contentType) == 0 {
+		contentType, _, err = readContentType(obj.PayloadSize(), func(sz uint64) (io.Reader, error) {
+			prmRange := PrmObjectRange{
+				PrmAuth: PrmAuth{
+					BearerToken: btoken,
+				},
+				Address:      objectAddress,
+				PayloadRange: [2]uint64{0, sz},
+			}
+
+			return h.frostfs.RangeObject(ctx, prmRange)
+		})
+		if err != nil && err != io.EOF {
+			req.handleFrostFSErr(err, start)
+			return
+		}
+	}
+	req.SetContentType(contentType)
+}
+
+func idsToResponse(resp *fasthttp.Response, obj *object.Object) {
+	objID, _ := obj.ID()
+	cnrID, _ := obj.ContainerID()
+	resp.Header.Set(hdrObjectID, objID.String())
+	resp.Header.Set(hdrOwnerID, obj.OwnerID().String())
+	resp.Header.Set(hdrContainerID, cnrID.String())
+}
+
+// HeadByAddressOrBucketName handles head requests using simple cid/oid or bucketname/key format.
+func (h *Handler) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
+	cidParam, _ := c.UserValue("cid").(string)
+	oidParam, _ := c.UserValue("oid").(string)
+
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log).With(
+		zap.String("cid", cidParam),
+		zap.String("oid", oidParam),
+	)
+
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	checkS3Err := h.tree.CheckSettingsNodeExists(ctx, bktInfo)
+	if checkS3Err != nil && !errors.Is(checkS3Err, layer.ErrNodeNotFound) {
+		logAndSendBucketError(c, log, checkS3Err)
+		return
+	}
+
+	req := h.newRequest(c, log)
+
+	var objID oid.ID
+	if checkS3Err == nil {
+		h.byS3Path(ctx, req, bktInfo.CID, oidParam, h.headObject)
+	} else if err = objID.DecodeString(oidParam); err == nil {
+		h.byNativeAddress(ctx, req, bktInfo.CID, objID, h.headObject)
+	} else {
+		logAndSendBucketError(c, log, checkS3Err)
+		return
+	}
+}
+
+// HeadByAttribute handles attribute-based head requests.
+func (h *Handler) HeadByAttribute(c *fasthttp.RequestCtx) {
+	h.byAttribute(c, h.headObject)
+}

internal/handler/middleware/util.go

@@ -0,0 +1,26 @@
+package middleware
+
+import (
+	"context"
+	"fmt"
+)
+
+// keyWrapper is wrapper for context keys.
+type keyWrapper string
+
+const nsKey = keyWrapper("namespace")
+
+// GetNamespace extract namespace from context.
+func GetNamespace(ctx context.Context) (string, error) {
+	ns, ok := ctx.Value(nsKey).(string)
+	if !ok {
+		return "", fmt.Errorf("couldn't get namespace from context")
+	}
+
+	return ns, nil
+}
+
+// SetNamespace sets namespace in the context.
+func SetNamespace(ctx context.Context, ns string) context.Context {
+	return context.WithValue(ctx, nsKey, ns)
+}

internal/handler/multipart.go

@@ -0,0 +1,78 @@
+package handler
+
+import (
+	"errors"
+	"io"
+	"strconv"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/multipart"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"go.uber.org/zap"
+)
+
+const attributeMultipartObjectSize = "S3-Multipart-Object-Size"
+
+// MultipartFile provides standard ReadCloser interface and also allows one to
+// get file name, it's used for multipart uploads.
+type MultipartFile interface {
+	io.ReadCloser
+	FileName() string
+}
+
+func fetchMultipartFile(l *zap.Logger, r io.Reader, boundary string) (MultipartFile, error) {
+	// To have a custom buffer (3mb) the custom multipart reader is used.
+	// Default reader uses 4KiB chunks, which slow down upload speed up to 400%
+	// https://github.com/golang/go/blob/91b9915d3f6f8cd2e9e9fda63f67772803adfa03/src/mime/multipart/multipart.go#L32
+	reader := multipart.NewReader(r, boundary)
+
+	for {
+		part, err := reader.NextPart()
+		if err != nil {
+			return nil, err
+		}
+
+		name := part.FormName()
+		if name == "" {
+			l.Debug(logs.IgnorePartEmptyFormName)
+			continue
+		}
+
+		filename := part.FileName()
+
+		// ignore multipart/form-data values
+		if filename == "" {
+			l.Debug(logs.IgnorePartEmptyFilename, zap.String("form", name))
+
+			continue
+		}
+
+		return part, nil
+	}
+}
+
+// getPayload returns initial payload if object is not multipart else composes new reader with parts data.
+func (h *Handler) getPayload(p getMultiobjectBodyParams) (io.ReadCloser, uint64, error) {
+	cid, ok := p.obj.Header.ContainerID()
+	if !ok {
+		return nil, 0, errors.New("no container id set")
+	}
+	oid, ok := p.obj.Header.ID()
+	if !ok {
+		return nil, 0, errors.New("no object id set")
+	}
+	size, err := strconv.ParseUint(p.strSize, 10, 64)
+	if err != nil {
+		return nil, 0, err
+	}
+	ctx := p.req.RequestCtx
+	params := PrmInitMultiObjectReader{
+		Addr:   newAddress(cid, oid),
+		Bearer: bearerToken(ctx),
+	}
+	payload, err := h.frostfs.InitMultiObjectReader(ctx, params)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	return io.NopCloser(payload), size, nil
+}

internal/handler/multipart_test.go

@@ -1,4 +1,6 @@
-package uploader
+//go:build !integration
+
+package handler
 
 import (
 	"crypto/rand"
@@ -8,6 +10,7 @@ import (
 	"os"
 	"testing"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap"
 )
@@ -109,7 +112,7 @@ func fetchMultipartFileDefault(l *zap.Logger, r io.Reader, boundary string) (Mul
 
 		name := part.FormName()
 		if name == "" {
-			l.Debug("ignore part, empty form name")
+			l.Debug(logs.IgnorePartEmptyFormName)
 			continue
 		}
 
@@ -117,7 +120,7 @@ func fetchMultipartFileDefault(l *zap.Logger, r io.Reader, boundary string) (Mul
 
 		// ignore multipart/form-data values
 		if filename == "" {
-			l.Debug("ignore part, empty filename", zap.String("form", name))
+			l.Debug(logs.IgnorePartEmptyFilename, zap.String("form", name))
 
 			continue
 		}

internal/handler/reader.go

@@ -0,0 +1,184 @@
+package handler
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"path"
+	"strconv"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type readCloser struct {
+	io.Reader
+	io.Closer
+}
+
+// initializes io.Reader with the limited size and detects Content-Type from it.
+// Returns r's error directly. Also returns the processed data.
+func readContentType(maxSize uint64, rInit func(uint64) (io.Reader, error)) (string, []byte, error) {
+	if maxSize > sizeToDetectType {
+		maxSize = sizeToDetectType
+	}
+
+	buf := make([]byte, maxSize) // maybe sync-pool the slice?
+
+	r, err := rInit(maxSize)
+	if err != nil {
+		return "", nil, err
+	}
+
+	n, err := r.Read(buf)
+	if err != nil && err != io.EOF {
+		return "", nil, err
+	}
+
+	buf = buf[:n]
+
+	return http.DetectContentType(buf), buf, err // to not lose io.EOF
+}
+
+type getMultiobjectBodyParams struct {
+	obj     *Object
+	req     request
+	strSize string
+}
+
+func (h *Handler) receiveFile(ctx context.Context, req request, objAddress oid.Address) {
+	var (
+		shouldDownload = req.QueryArgs().GetBool("download")
+		start          = time.Now()
+		filename       string
+		filepath       string
+		contentType    string
+	)
+
+	prm := PrmObjectGet{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Address: objAddress,
+	}
+
+	rObj, err := h.frostfs.GetObject(ctx, prm)
+	if err != nil {
+		req.handleFrostFSErr(err, start)
+		return
+	}
+
+	// we can't close reader in this function, so how to do it?
+	req.setIDs(rObj.Header)
+	payload := rObj.Payload
+	payloadSize := rObj.Header.PayloadSize()
+	for _, attr := range rObj.Header.Attributes() {
+		key := attr.Key()
+		val := attr.Value()
+		if !isValidToken(key) || !isValidValue(val) {
+			continue
+		}
+
+		key = utils.BackwardTransformIfSystem(key)
+
+		req.Response.Header.Set(utils.UserAttributeHeaderPrefix+key, val)
+		switch key {
+		case object.AttributeFileName:
+			filename = val
+		case object.AttributeTimestamp:
+			if err = req.setTimestamp(val); err != nil {
+				req.log.Error(logs.CouldntParseCreationDate,
+					zap.String("val", val),
+					zap.Error(err))
+			}
+		case object.AttributeContentType:
+			contentType = val
+		case object.AttributeFilePath:
+			filepath = val
+		case attributeMultipartObjectSize:
+			payload, payloadSize, err = h.getPayload(getMultiobjectBodyParams{
+				obj:     rObj,
+				req:     req,
+				strSize: val,
+			})
+			if err != nil {
+				req.handleFrostFSErr(err, start)
+				return
+			}
+		}
+	}
+	if filename == "" {
+		filename = filepath
+	}
+
+	req.setDisposition(shouldDownload, filename)
+
+	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(payloadSize, 10))
+
+	if len(contentType) == 0 {
+		// determine the Content-Type from the payload head
+		var payloadHead []byte
+
+		contentType, payloadHead, err = readContentType(payloadSize, func(uint64) (io.Reader, error) {
+			return payload, nil
+		})
+		if err != nil && err != io.EOF {
+			req.log.Error(logs.CouldNotDetectContentTypeFromPayload, zap.Error(err))
+			response.Error(req.RequestCtx, "could not detect Content-Type from payload: "+err.Error(), fasthttp.StatusBadRequest)
+			return
+		}
+
+		// reset payload reader since a part of the data has been read
+		var headReader io.Reader = bytes.NewReader(payloadHead)
+
+		if err != io.EOF { // otherwise, we've already read full payload
+			headReader = io.MultiReader(headReader, payload)
+		}
+
+		// note: we could do with io.Reader, but SetBodyStream below closes body stream
+		// if it implements io.Closer and that's useful for us.
+		payload = readCloser{headReader, payload}
+	}
+	req.SetContentType(contentType)
+	req.Response.SetBodyStream(payload, int(payloadSize))
+}
+
+func (r *request) setIDs(obj object.Object) {
+	objID, _ := obj.ID()
+	cnrID, _ := obj.ContainerID()
+	r.Response.Header.Set(hdrObjectID, objID.String())
+	r.Response.Header.Set(hdrOwnerID, obj.OwnerID().String())
+	r.Response.Header.Set(hdrContainerID, cnrID.String())
+}
+
+func (r *request) setDisposition(shouldDownload bool, filename string) {
+	const (
+		inlineDisposition     = "inline"
+		attachmentDisposition = "attachment"
+	)
+
+	dis := inlineDisposition
+	if shouldDownload {
+		dis = attachmentDisposition
+	}
+
+	r.Response.Header.Set(fasthttp.HeaderContentDisposition, dis+"; filename="+path.Base(filename))
+}
+
+func (r *request) setTimestamp(timestamp string) error {
+	value, err := strconv.ParseInt(timestamp, 10, 64)
+	if err != nil {
+		return err
+	}
+	r.Response.Header.Set(fasthttp.HeaderLastModified,
+		time.Unix(value, 0).UTC().Format(http.TimeFormat))
+
+	return nil
+}

internal/handler/reader_test.go

@@ -1,4 +1,6 @@
-package downloader
+//go:build !integration
+
+package handler
 
 import (
 	"io"
@@ -33,7 +35,7 @@ func TestDetector(t *testing.T) {
 	} {
 		t.Run(tc.Name, func(t *testing.T) {
 			contentType, data, err := readContentType(uint64(len(tc.Expected)),
-				func(sz uint64) (io.Reader, error) {
+				func(uint64) (io.Reader, error) {
 					return strings.NewReader(tc.Expected), nil
 				},
 			)

internal/handler/upload.go

@@ -0,0 +1,194 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"strconv"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+const (
+	jsonHeader   = "application/json; charset=UTF-8"
+	drainBufSize = 4096
+)
+
+type putResponse struct {
+	ObjectID    string `json:"object_id"`
+	ContainerID string `json:"container_id"`
+}
+
+func newPutResponse(addr oid.Address) *putResponse {
+	return &putResponse{
+		ObjectID:    addr.Object().EncodeToString(),
+		ContainerID: addr.Container().EncodeToString(),
+	}
+}
+
+func (pr *putResponse) encode(w io.Writer) error {
+	enc := json.NewEncoder(w)
+	enc.SetIndent("", "\t")
+	return enc.Encode(pr)
+}
+
+// Upload handles multipart upload request.
+func (h *Handler) Upload(c *fasthttp.RequestCtx) {
+	var (
+		file  MultipartFile
+		idObj oid.ID
+		addr  oid.Address
+	)
+
+	scid, _ := c.UserValue("cid").(string)
+	bodyStream := c.RequestBodyStream()
+	drainBuf := make([]byte, drainBufSize)
+
+	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(zap.String("cid", scid))
+
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	defer func() {
+		// If the temporary reader can be closed - let's close it.
+		if file == nil {
+			return
+		}
+		err := file.Close()
+		log.Debug(
+			logs.CloseTemporaryMultipartFormFile,
+			zap.Stringer("address", addr),
+			zap.String("filename", file.FileName()),
+			zap.Error(err),
+		)
+	}()
+
+	boundary := string(c.Request.Header.MultipartFormBoundary())
+	if file, err = fetchMultipartFile(log, bodyStream, boundary); err != nil {
+		log.Error(logs.CouldNotReceiveMultipartForm, zap.Error(err))
+		response.Error(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	filtered, err := filterHeaders(log, &c.Request.Header)
+	if err != nil {
+		log.Error(logs.CouldNotProcessHeaders, zap.Error(err))
+		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	now := time.Now()
+	if rawHeader := c.Request.Header.Peek(fasthttp.HeaderDate); rawHeader != nil {
+		if parsed, err := time.Parse(http.TimeFormat, string(rawHeader)); err != nil {
+			log.Warn(logs.CouldNotParseClientTime, zap.String("Date header", string(rawHeader)), zap.Error(err))
+		} else {
+			now = parsed
+		}
+	}
+
+	if err = utils.PrepareExpirationHeader(c, h.frostfs, filtered, now); err != nil {
+		log.Error(logs.CouldNotPrepareExpirationHeader, zap.Error(err))
+		response.Error(c, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+
+	attributes := make([]object.Attribute, 0, len(filtered))
+	// prepares attributes from filtered headers
+	for key, val := range filtered {
+		attribute := object.NewAttribute()
+		attribute.SetKey(key)
+		attribute.SetValue(val)
+		attributes = append(attributes, *attribute)
+	}
+	// sets FileName attribute if it wasn't set from header
+	if _, ok := filtered[object.AttributeFileName]; !ok {
+		filename := object.NewAttribute()
+		filename.SetKey(object.AttributeFileName)
+		filename.SetValue(file.FileName())
+		attributes = append(attributes, *filename)
+	}
+	// sets Timestamp attribute if it wasn't set from header and enabled by settings
+	if _, ok := filtered[object.AttributeTimestamp]; !ok && h.config.DefaultTimestamp() {
+		timestamp := object.NewAttribute()
+		timestamp.SetKey(object.AttributeTimestamp)
+		timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10))
+		attributes = append(attributes, *timestamp)
+	}
+
+	obj := object.New()
+	obj.SetContainerID(bktInfo.CID)
+	obj.SetOwnerID(*h.ownerID)
+	obj.SetAttributes(attributes...)
+
+	prm := PrmObjectCreate{
+		PrmAuth: PrmAuth{
+			BearerToken: h.fetchBearerToken(ctx),
+		},
+		Object:                 obj,
+		Payload:                file,
+		ClientCut:              h.config.ClientCut(),
+		WithoutHomomorphicHash: bktInfo.HomomorphicHashDisabled,
+		BufferMaxSize:          h.config.BufferMaxSizeForPut(),
+	}
+
+	if idObj, err = h.frostfs.CreateObject(ctx, prm); err != nil {
+		h.handlePutFrostFSErr(c, err, log)
+		return
+	}
+
+	addr.SetObject(idObj)
+	addr.SetContainer(bktInfo.CID)
+
+	// Try to return the response, otherwise, if something went wrong, throw an error.
+	if err = newPutResponse(addr).encode(c); err != nil {
+		log.Error(logs.CouldNotEncodeResponse, zap.Error(err))
+		response.Error(c, "could not encode response", fasthttp.StatusBadRequest)
+
+		return
+	}
+	// Multipart is multipart and thus can contain more than one part which
+	// we ignore at the moment. Also, when dealing with chunked encoding
+	// the last zero-length chunk might be left unread (because multipart
+	// reader only cares about its boundary and doesn't look further) and
+	// it will be (erroneously) interpreted as the start of the next
+	// pipelined header. Thus we need to drain the body buffer.
+	for {
+		_, err = bodyStream.Read(drainBuf)
+		if err == io.EOF || err == io.ErrUnexpectedEOF {
+			break
+		}
+	}
+	// Report status code and content type.
+	c.Response.SetStatusCode(fasthttp.StatusOK)
+	c.Response.Header.SetContentType(jsonHeader)
+}
+
+func (h *Handler) handlePutFrostFSErr(r *fasthttp.RequestCtx, err error, log *zap.Logger) {
+	statusCode, msg, additionalFields := response.FormErrorResponse("could not store file in frostfs", err)
+	logFields := append([]zap.Field{zap.Error(err)}, additionalFields...)
+
+	log.Error(logs.CouldNotStoreFileInFrostfs, logFields...)
+	response.Error(r, msg, statusCode)
+}
+
+func (h *Handler) fetchBearerToken(ctx context.Context) *bearer.Token {
+	if tkn, err := tokens.LoadBearerToken(ctx); err == nil && tkn != nil {
+		return tkn
+	}
+	return nil
+}

internal/handler/utils.go

@@ -0,0 +1,93 @@
+package handler
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type request struct {
+	*fasthttp.RequestCtx
+	log *zap.Logger
+}
+
+func (r *request) handleFrostFSErr(err error, start time.Time) {
+	logFields := []zap.Field{
+		zap.Stringer("elapsed", time.Since(start)),
+		zap.Error(err),
+	}
+	statusCode, msg, additionalFields := response.FormErrorResponse("could not receive object", err)
+	logFields = append(logFields, additionalFields...)
+
+	r.log.Error(logs.CouldNotReceiveObject, logFields...)
+	response.Error(r.RequestCtx, msg, statusCode)
+}
+
+func bearerToken(ctx context.Context) *bearer.Token {
+	if tkn, err := tokens.LoadBearerToken(ctx); err == nil {
+		return tkn
+	}
+	return nil
+}
+
+func isDir(name string) bool {
+	return name == "" || strings.HasSuffix(name, "/")
+}
+
+func loadAttributes(attrs []object.Attribute) map[string]string {
+	result := make(map[string]string)
+	for _, attr := range attrs {
+		result[attr.Key()] = attr.Value()
+	}
+	return result
+}
+
+func isValidToken(s string) bool {
+	for _, c := range s {
+		if c <= ' ' || c > 127 {
+			return false
+		}
+		if strings.ContainsRune("()<>@,;:\\\"/[]?={}", c) {
+			return false
+		}
+	}
+	return true
+}
+
+func isValidValue(s string) bool {
+	for _, c := range s {
+		// HTTP specification allows for more technically, but we don't want to escape things.
+		if c < ' ' || c > 127 || c == '"' {
+			return false
+		}
+	}
+	return true
+}
+
+func logAndSendBucketError(c *fasthttp.RequestCtx, log *zap.Logger, err error) {
+	log.Error(logs.CouldntGetBucket, zap.Error(err))
+
+	if client.IsErrContainerNotFound(err) {
+		response.Error(c, "Not Found", fasthttp.StatusNotFound)
+		return
+	}
+	response.Error(c, "could not get bucket: "+err.Error(), fasthttp.StatusBadRequest)
+}
+
+func newAddress(cnr cid.ID, obj oid.ID) oid.Address {
+	var addr oid.Address
+	addr.SetContainer(cnr)
+	addr.SetObject(obj)
+	return addr
+}

internal/layer/tree_service.go

@@ -0,0 +1,24 @@
+package layer
+
+import (
+	"context"
+	"errors"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+)
+
+// TreeService provide interface to interact with tree service using s3 data models.
+type TreeService interface {
+	GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error)
+	GetSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]data.NodeInfo, string, error)
+	CheckSettingsNodeExists(ctx context.Context, bktInfo *data.BucketInfo) error
+}
+
+var (
+	// ErrNodeNotFound is returned from Tree service in case of not found error.
+	ErrNodeNotFound = errors.New("not found")
+
+	// ErrNodeAccessDenied is returned from Tree service in case of access denied error.
+	ErrNodeAccessDenied = errors.New("access denied")
+)

internal/logs/logs.go

@@ -0,0 +1,96 @@
+package logs
+
+const (
+	CouldntParseCreationDate                                              = "couldn't parse creation date"                                                           // Info in ../../downloader/*
+	CouldNotDetectContentTypeFromPayload                                  = "could not detect Content-Type from payload"                                             // Error in ../../downloader/download.go
+	CouldNotReceiveObject                                                 = "could not receive object"                                                               // Error in ../../downloader/download.go
+	WrongObjectID                                                         = "wrong object id"                                                                        // Error in ../../downloader/download.go
+	GetLatestObjectVersion                                                = "get latest object version"                                                              // Error in ../../downloader/download.go
+	ObjectWasDeleted                                                      = "object was deleted"                                                                     // Error in ../../downloader/download.go
+	CouldNotSearchForObjects                                              = "could not search for objects"                                                           // Error in ../../downloader/download.go
+	ObjectNotFound                                                        = "object not found"                                                                       // Error in ../../downloader/download.go
+	ReadObjectListFailed                                                  = "read object list failed"                                                                // Error in ../../downloader/download.go
+	FailedToAddObjectToArchive                                            = "failed to add object to archive"                                                        // Error in ../../downloader/download.go
+	IteratingOverSelectedObjectsFailed                                    = "iterating over selected objects failed"                                                 // Error in ../../downloader/download.go
+	ObjectsNotFound                                                       = "objects not found"                                                                      // Error in ../../downloader/download.go
+	CloseZipWriter                                                        = "close zip writer"                                                                       // Error in ../../downloader/download.go
+	ServiceIsRunning                                                      = "service is running"                                                                     // Info in ../../metrics/service.go
+	ServiceCouldntStartOnConfiguredPort                                   = "service couldn't start on configured port"                                              // Warn in ../../metrics/service.go
+	ServiceHasntStartedSinceItsDisabled                                   = "service hasn't started since it's disabled"                                             // Info in ../../metrics/service.go
+	ShuttingDownService                                                   = "shutting down service"                                                                  // Info in ../../metrics/service.go
+	CantShutDownService                                                   = "can't shut down service"                                                                // Panic in ../../metrics/service.go
+	CantGracefullyShutDownService                                         = "can't gracefully shut down service, force stop"                                         // Error in ../../metrics/service.go
+	IgnorePartEmptyFormName                                               = "ignore part, empty form name"                                                           // Debug in ../../uploader/upload.go
+	IgnorePartEmptyFilename                                               = "ignore part, empty filename"                                                            // Debug in ../../uploader/upload.go
+	CloseTemporaryMultipartFormFile                                       = "close temporary multipart/form file"                                                    // Debug in ../../uploader/upload.go
+	CouldNotReceiveMultipartForm                                          = "could not receive multipart/form"                                                       // Error in ../../uploader/upload.go
+	CouldNotProcessHeaders                                                = "could not process headers"                                                              // Error in ../../uploader/upload.go
+	CouldNotParseClientTime                                               = "could not parse client time"                                                            // Warn in ../../uploader/upload.go
+	CouldNotPrepareExpirationHeader                                       = "could not prepare expiration header"                                                    // Error in ../../uploader/upload.go
+	CouldNotEncodeResponse                                                = "could not encode response"                                                              // Error in ../../uploader/upload.go
+	CouldNotStoreFileInFrostfs                                            = "could not store file in frostfs"                                                        // Error in ../../uploader/upload.go
+	AddAttributeToResultObject                                            = "add attribute to result object"                                                         // Debug in ../../uploader/filter.go
+	FailedToCreateResolver                                                = "failed to create resolver"                                                              // Fatal in ../../app.go
+	FailedToCreateWorkerPool                                              = "failed to create worker pool"                                                           // Fatal in ../../app.go
+	FailedToReadIndexPageTemplate                                         = "failed to read index page template"                                                     // Error in ../../app.go
+	SetCustomIndexPageTemplate                                            = "set custom index page template"                                                         // Info in ../../app.go
+	ContainerResolverWillBeDisabledBecauseOfResolversResolverOrderIsEmpty = "container resolver will be disabled because of resolvers 'resolver_order' is empty"     // Info in ../../app.go
+	MetricsAreDisabled                                                    = "metrics are disabled"                                                                   // Warn in ../../app.go
+	NoWalletPathSpecifiedCreatingEphemeralKeyAutomaticallyForThisRun      = "no wallet path specified, creating ephemeral key automatically for this run"            // Info in ../../app.go
+	StartingApplication                                                   = "starting application"                                                                   // Info in ../../app.go
+	StartingServer                                                        = "starting server"                                                                        // Info in ../../app.go
+	ListenAndServe                                                        = "listen and serve"                                                                       // Fatal in ../../app.go
+	ShuttingDownWebServer                                                 = "shutting down web server"                                                               // Info in ../../app.go
+	FailedToShutdownTracing                                               = "failed to shutdown tracing"                                                             // Warn in ../../app.go
+	SIGHUPConfigReloadStarted                                             = "SIGHUP config reload started"                                                           // Info in ../../app.go
+	FailedToReloadConfigBecauseItsMissed                                  = "failed to reload config because it's missed"                                            // Warn in ../../app.go
+	FailedToReloadConfig                                                  = "failed to reload config"                                                                // Warn in ../../app.go
+	LogLevelWontBeUpdated                                                 = "log level won't be updated"                                                             // Warn in ../../app.go
+	FailedToUpdateResolvers                                               = "failed to update resolvers"                                                             // Warn in ../../app.go
+	FailedToReloadServerParameters                                        = "failed to reload server parameters"                                                     // Warn in ../../app.go
+	SIGHUPConfigReloadCompleted                                           = "SIGHUP config reload completed"                                                         // Info in ../../app.go
+	AddedPathUploadCid                                                    = "added path /upload/{cid}"                                                               // Info in ../../app.go
+	AddedPathGetCidOid                                                    = "added path /get/{cid}/{oid}"                                                            // Info in ../../app.go
+	AddedPathGetByAttributeCidAttrKeyAttrVal                              = "added path /get_by_attribute/{cid}/{attr_key}/{attr_val:*}"                             // Info in ../../app.go
+	AddedPathZipCidPrefix                                                 = "added path /zip/{cid}/{prefix}"                                                         // Info in ../../app.go
+	Request                                                               = "request"                                                                                // Info in ../../app.go
+	CouldNotFetchAndStoreBearerToken                                      = "could not fetch and store bearer token"                                                 // Error in ../../app.go
+	FailedToAddServer                                                     = "failed to add server"                                                                   // Warn in ../../app.go
+	AddServer                                                             = "add server"                                                                             // Info in ../../app.go
+	NoHealthyServers                                                      = "no healthy servers"                                                                     // Fatal in ../../app.go
+	FailedToInitializeTracing                                             = "failed to initialize tracing"                                                           // Warn in ../../app.go
+	TracingConfigUpdated                                                  = "tracing config updated"                                                                 // Info in ../../app.go
+	ResolverNNSWontBeUsedSinceRPCEndpointIsntProvided                     = "resolver nns won't be used since rpc_endpoint isn't provided"                           // Warn in ../../app.go
+	RuntimeSoftMemoryDefinedWithGOMEMLIMIT                                = "soft runtime memory defined with GOMEMLIMIT environment variable, config value skipped" // Warn in ../../app.go
+	RuntimeSoftMemoryLimitUpdated                                         = "soft runtime memory limit value updated"                                                // Info in ../../app.go
+	CouldNotLoadFrostFSPrivateKey                                         = "could not load FrostFS private key"                                                     // Fatal in ../../settings.go
+	UsingCredentials                                                      = "using credentials"                                                                      // Info in ../../settings.go
+	FailedToCreateConnectionPool                                          = "failed to create connection pool"                                                       // Fatal in ../../settings.go
+	FailedToDialConnectionPool                                            = "failed to dial connection pool"                                                         // Fatal in ../../settings.go
+	FailedToCreateTreePool                                                = "failed to create tree pool"                                                             // Fatal in ../../settings.go
+	FailedToDialTreePool                                                  = "failed to dial tree pool"                                                               // Fatal in ../../settings.go
+	AddedStoragePeer                                                      = "added storage peer"                                                                     // Info in ../../settings.go
+	CouldntGetBucket                                                      = "could not get bucket"                                                                   // Error in ../handler/utils.go
+	CouldntPutBucketIntoCache                                             = "couldn't put bucket info into cache"                                                    // Warn in ../handler/handler.go
+	FailedToSumbitTaskToPool                                              = "failed to submit task to pool"                                                          // Error in ../handler/browse.go
+	FailedToHeadObject                                                    = "failed to head object"                                                                  // Error in ../handler/browse.go
+	FailedToIterateOverResponse                                           = "failed to iterate over search response"                                                 // Error in ../handler/browse.go
+	InvalidCacheEntryType                                                 = "invalid cache entry type"                                                               // Warn in ../cache/buckets.go
+	InvalidLifetimeUsingDefaultValue                                      = "invalid lifetime, using default value (in seconds)"                                     // Error in ../../cmd/http-gw/settings.go
+	InvalidCacheSizeUsingDefaultValue                                     = "invalid cache size, using default value"                                                // Error in ../../cmd/http-gw/settings.go
+	FailedToUnescapeQuery                                                 = "failed to unescape query"
+	FailedToParseAddressInTreeNode                                        = "failed to parse object addr in tree node"
+	SettingsNodeInvalidOwnerKey                                           = "settings node: invalid owner key"
+	SystemNodeHasMultipleIDs                                              = "system node has multiple ids"
+	FailedToRemoveOldSystemNode                                           = "failed to remove old system node"
+	BucketSettingsNodeHasMultipleIDs                                      = "bucket settings node has multiple ids"
+	ServerReconnecting                                                    = "reconnecting server..."
+	ServerReconnectedSuccessfully                                         = "server reconnected successfully"
+	ServerReconnectFailed                                                 = "failed to reconnect server"
+	WarnDuplicateAddress                                                  = "duplicate address"
+	MultinetDialSuccess                                                   = "multinet dial successful"
+	MultinetDialFail                                                      = "multinet dial failed"
+	FailedToLoadMultinetConfig                                            = "failed to load multinet config"
+	MultinetConfigWontBeUpdated                                           = "multinet config won't be updated"
+	ObjectNotFoundByFilePathTrySearchByFileName                           = "object not found by filePath attribute, try search by fileName"
+)

internal/net/config.go

@@ -0,0 +1,68 @@
+package net
+
+import (
+	"errors"
+	"fmt"
+	"net/netip"
+	"slices"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/multinet"
+)
+
+var errEmptySourceIPList = errors.New("empty source IP list")
+
+type Subnet struct {
+	Prefix    string
+	SourceIPs []string
+}
+
+type Config struct {
+	Enabled       bool
+	Subnets       []Subnet
+	Balancer      string
+	Restrict      bool
+	FallbackDelay time.Duration
+	EventHandler  multinet.EventHandler
+}
+
+func (c Config) toMultinetConfig() (multinet.Config, error) {
+	var subnets []multinet.Subnet
+	for _, s := range c.Subnets {
+		var ms multinet.Subnet
+		p, err := netip.ParsePrefix(s.Prefix)
+		if err != nil {
+			return multinet.Config{}, fmt.Errorf("parse IP prefix '%s': %w", s.Prefix, err)
+		}
+		ms.Prefix = p
+		for _, ip := range s.SourceIPs {
+			addr, err := netip.ParseAddr(ip)
+			if err != nil {
+				return multinet.Config{}, fmt.Errorf("parse IP address '%s': %w", ip, err)
+			}
+			ms.SourceIPs = append(ms.SourceIPs, addr)
+		}
+		if len(ms.SourceIPs) == 0 {
+			return multinet.Config{}, errEmptySourceIPList
+		}
+		subnets = append(subnets, ms)
+	}
+	return multinet.Config{
+		Subnets:       subnets,
+		Balancer:      multinet.BalancerType(c.Balancer),
+		Restrict:      c.Restrict,
+		FallbackDelay: c.FallbackDelay,
+		Dialer:        newDefaultDialer(),
+		EventHandler:  c.EventHandler,
+	}, nil
+}
+
+func (c Config) equals(other Config) bool {
+	return c.Enabled == other.Enabled &&
+		slices.EqualFunc(c.Subnets, other.Subnets, func(lhs, rhs Subnet) bool {
+			return lhs.Prefix == rhs.Prefix && slices.Equal(lhs.SourceIPs, rhs.SourceIPs)
+		}) &&
+		c.Balancer == other.Balancer &&
+		c.Restrict == other.Restrict &&
+		c.FallbackDelay == other.FallbackDelay
+}

internal/net/dial_target.go

@@ -0,0 +1,54 @@
+// NOTE: code is taken from https://github.com/grpc/grpc-go/blob/v1.68.x/internal/transport/http_util.go
+
+/*
+ *
+ * Copyright 2014 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package net
+
+import (
+	"net/url"
+	"strings"
+)
+
+// parseDialTarget returns the network and address to pass to dialer.
+func parseDialTarget(target string) (string, string) {
+	net := "tcp"
+	m1 := strings.Index(target, ":")
+	m2 := strings.Index(target, ":/")
+	// handle unix:addr which will fail with url.Parse
+	if m1 >= 0 && m2 < 0 {
+		if n := target[0:m1]; n == "unix" {
+			return n, target[m1+1:]
+		}
+	}
+	if m2 >= 0 {
+		t, err := url.Parse(target)
+		if err != nil {
+			return net, target
+		}
+		scheme := t.Scheme
+		addr := t.Path
+		if scheme == "unix" {
+			if addr == "" {
+				addr = t.Host
+			}
+			return scheme, addr
+		}
+	}
+	return net, target
+}

internal/net/dialer.go

@@ -0,0 +1,36 @@
+package net
+
+import (
+	"net"
+	"syscall"
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func newDefaultDialer() net.Dialer {
+	// From `grpc.WithContextDialer` comment:
+	//
+	// Note: All supported releases of Go (as of December 2023) override the OS
+	// defaults for TCP keepalive time and interval to 15s. To enable TCP keepalive
+	// with OS defaults for keepalive time and interval, use a net.Dialer that sets
+	// the KeepAlive field to a negative value, and sets the SO_KEEPALIVE socket
+	// option to true from the Control field. For a concrete example of how to do
+	// this, see internal.NetDialerWithTCPKeepalive().
+	//
+	// https://github.com/grpc/grpc-go/blob/830135e6c5a351abf75f0c9cfdf978e5df8daeba/dialoptions.go#L432
+	//
+	// From `internal.NetDialerWithTCPKeepalive` comment:
+	//
+	// TODO: Once https://github.com/golang/go/issues/62254 lands, and the
+	// appropriate Go version becomes less than our least supported Go version, we
+	// should look into using the new API to make things more straightforward.
+	return net.Dialer{
+		KeepAlive: time.Duration(-1),
+		Control: func(_, _ string, c syscall.RawConn) error {
+			return c.Control(func(fd uintptr) {
+				_ = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_KEEPALIVE, 1)
+			})
+		},
+	}
+}

internal/net/dialer_source.go

@@ -0,0 +1,69 @@
+package net
+
+import (
+	"context"
+	"net"
+	"sync"
+
+	"git.frostfs.info/TrueCloudLab/multinet"
+)
+
+type DialerSource struct {
+	guard sync.RWMutex
+
+	c Config
+
+	md multinet.Dialer
+}
+
+func NewDialerSource(c Config) (*DialerSource, error) {
+	result := &DialerSource{}
+	if err := result.build(c); err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+func (s *DialerSource) build(c Config) error {
+	if c.Enabled {
+		mc, err := c.toMultinetConfig()
+		if err != nil {
+			return err
+		}
+		md, err := multinet.NewDialer(mc)
+		if err != nil {
+			return err
+		}
+		s.md = md
+		s.c = c
+		return nil
+	}
+	s.md = nil
+	s.c = c
+	return nil
+}
+
+// GrpcContextDialer returns grpc.WithContextDialer func.
+// Returns nil if multinet disabled.
+func (s *DialerSource) GrpcContextDialer() func(context.Context, string) (net.Conn, error) {
+	s.guard.RLock()
+	defer s.guard.RUnlock()
+
+	if s.c.Enabled {
+		return func(ctx context.Context, address string) (net.Conn, error) {
+			network, address := parseDialTarget(address)
+			return s.md.DialContext(ctx, network, address)
+		}
+	}
+	return nil
+}
+
+func (s *DialerSource) Update(c Config) error {
+	s.guard.Lock()
+	defer s.guard.Unlock()
+
+	if s.c.equals(c) {
+		return nil
+	}
+	return s.build(c)
+}

internal/net/event_handler.go

@@ -0,0 +1,28 @@
+package net
+
+import (
+	"net"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
+	"go.uber.org/zap"
+)
+
+type LogEventHandler struct {
+	logger *zap.Logger
+}
+
+func (l LogEventHandler) DialPerformed(sourceIP net.Addr, _, address string, err error) {
+	sourceIPString := "undefined"
+	if sourceIP != nil {
+		sourceIPString = sourceIP.Network() + "://" + sourceIP.String()
+	}
+	if err == nil {
+		l.logger.Debug(logs.MultinetDialSuccess, zap.String("source", sourceIPString), zap.String("destination", address))
+	} else {
+		l.logger.Debug(logs.MultinetDialFail, zap.String("source", sourceIPString), zap.String("destination", address), zap.Error(err))
+	}
+}
+
+func NewLogEventHandler(logger *zap.Logger) LogEventHandler {
+	return LogEventHandler{logger: logger}
+}

internal/service/frostfs/frostfs.go

@@ -0,0 +1,245 @@
+package frostfs
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+// FrostFS represents virtual connection to the FrostFS network.
+// It is used to provide an interface to dependent packages
+// which work with FrostFS.
+type FrostFS struct {
+	pool *pool.Pool
+}
+
+// NewFrostFS creates new FrostFS using provided pool.Pool.
+func NewFrostFS(p *pool.Pool) *FrostFS {
+	return &FrostFS{
+		pool: p,
+	}
+}
+
+// Container implements frostfs.FrostFS interface method.
+func (x *FrostFS) Container(ctx context.Context, containerPrm handler.PrmContainer) (*container.Container, error) {
+	prm := pool.PrmContainerGet{
+		ContainerID: containerPrm.ContainerID,
+	}
+
+	res, err := x.pool.GetContainer(ctx, prm)
+	if err != nil {
+		return nil, handleObjectError("read container via connection pool", err)
+	}
+
+	return &res, nil
+}
+
+// CreateObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) CreateObject(ctx context.Context, prm handler.PrmObjectCreate) (oid.ID, error) {
+	var prmPut pool.PrmObjectPut
+	prmPut.SetHeader(*prm.Object)
+	prmPut.SetPayload(prm.Payload)
+	prmPut.SetClientCut(prm.ClientCut)
+	prmPut.WithoutHomomorphicHash(prm.WithoutHomomorphicHash)
+	prmPut.SetBufferMaxSize(prm.BufferMaxSize)
+
+	if prm.BearerToken != nil {
+		prmPut.UseBearer(*prm.BearerToken)
+	}
+
+	idObj, err := x.pool.PutObject(ctx, prmPut)
+	if err != nil {
+		return oid.ID{}, handleObjectError("save object via connection pool", err)
+	}
+	return idObj.ObjectID, nil
+}
+
+// wraps io.ReadCloser and transforms Read errors related to access violation
+// to frostfs.ErrAccessDenied.
+type payloadReader struct {
+	io.ReadCloser
+}
+
+func (x payloadReader) Read(p []byte) (int, error) {
+	n, err := x.ReadCloser.Read(p)
+	if err != nil && errors.Is(err, io.EOF) {
+		return n, err
+	}
+	return n, handleObjectError("read payload", err)
+}
+
+// HeadObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) HeadObject(ctx context.Context, prm handler.PrmObjectHead) (*object.Object, error) {
+	var prmHead pool.PrmObjectHead
+	prmHead.SetAddress(prm.Address)
+
+	if prm.BearerToken != nil {
+		prmHead.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.HeadObject(ctx, prmHead)
+	if err != nil {
+		return nil, handleObjectError("read object header via connection pool", err)
+	}
+
+	return &res, nil
+}
+
+// GetObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) GetObject(ctx context.Context, prm handler.PrmObjectGet) (*handler.Object, error) {
+	var prmGet pool.PrmObjectGet
+	prmGet.SetAddress(prm.Address)
+
+	if prm.BearerToken != nil {
+		prmGet.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.GetObject(ctx, prmGet)
+	if err != nil {
+		return nil, handleObjectError("init full object reading via connection pool", err)
+	}
+
+	return &handler.Object{
+		Header:  res.Header,
+		Payload: res.Payload,
+	}, nil
+}
+
+// RangeObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) RangeObject(ctx context.Context, prm handler.PrmObjectRange) (io.ReadCloser, error) {
+	var prmRange pool.PrmObjectRange
+	prmRange.SetAddress(prm.Address)
+	prmRange.SetOffset(prm.PayloadRange[0])
+	prmRange.SetLength(prm.PayloadRange[1])
+
+	if prm.BearerToken != nil {
+		prmRange.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.ObjectRange(ctx, prmRange)
+	if err != nil {
+		return nil, handleObjectError("init payload range reading via connection pool", err)
+	}
+
+	return payloadReader{&res}, nil
+}
+
+// SearchObjects implements frostfs.FrostFS interface method.
+func (x *FrostFS) SearchObjects(ctx context.Context, prm handler.PrmObjectSearch) (handler.ResObjectSearch, error) {
+	var prmSearch pool.PrmObjectSearch
+	prmSearch.SetContainerID(prm.Container)
+	prmSearch.SetFilters(prm.Filters)
+
+	if prm.BearerToken != nil {
+		prmSearch.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.SearchObjects(ctx, prmSearch)
+	if err != nil {
+		return nil, handleObjectError("init object search via connection pool", err)
+	}
+
+	return &res, nil
+}
+
+// GetEpochDurations implements frostfs.FrostFS interface method.
+func (x *FrostFS) GetEpochDurations(ctx context.Context) (*utils.EpochDurations, error) {
+	networkInfo, err := x.pool.NetworkInfo(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	res := &utils.EpochDurations{
+		CurrentEpoch:  networkInfo.CurrentEpoch(),
+		MsPerBlock:    networkInfo.MsPerBlock(),
+		BlockPerEpoch: networkInfo.EpochDuration(),
+	}
+
+	if res.BlockPerEpoch == 0 {
+		return nil, fmt.Errorf("EpochDuration is empty")
+	}
+	return res, nil
+}
+
+// ResolverFrostFS represents virtual connection to the FrostFS network.
+// It implements resolver.FrostFS.
+type ResolverFrostFS struct {
+	pool *pool.Pool
+}
+
+// NewResolverFrostFS creates new ResolverFrostFS using provided pool.Pool.
+func NewResolverFrostFS(p *pool.Pool) *ResolverFrostFS {
+	return &ResolverFrostFS{pool: p}
+}
+
+// SystemDNS implements resolver.FrostFS interface method.
+func (x *ResolverFrostFS) SystemDNS(ctx context.Context) (string, error) {
+	networkInfo, err := x.pool.NetworkInfo(ctx)
+	if err != nil {
+		return "", handleObjectError("read network info via client", err)
+	}
+
+	domain := networkInfo.RawNetworkParameter("SystemDNS")
+	if domain == nil {
+		return "", errors.New("system DNS parameter not found or empty")
+	}
+
+	return string(domain), nil
+}
+
+func handleObjectError(msg string, err error) error {
+	if err == nil {
+		return nil
+	}
+
+	if reason, ok := IsErrObjectAccessDenied(err); ok {
+		return fmt.Errorf("%s: %w: %s", msg, handler.ErrAccessDenied, reason)
+	}
+
+	if IsTimeoutError(err) {
+		return fmt.Errorf("%s: %w: %s", msg, handler.ErrGatewayTimeout, err.Error())
+	}
+
+	return fmt.Errorf("%s: %w", msg, err)
+}
+
+func UnwrapErr(err error) error {
+	unwrappedErr := errors.Unwrap(err)
+	for unwrappedErr != nil {
+		err = unwrappedErr
+		unwrappedErr = errors.Unwrap(err)
+	}
+
+	return err
+}
+
+func IsErrObjectAccessDenied(err error) (string, bool) {
+	err = UnwrapErr(err)
+	switch err := err.(type) {
+	default:
+		return "", false
+	case *apistatus.ObjectAccessDenied:
+		return err.Reason(), true
+	}
+}
+
+func IsTimeoutError(err error) bool {
+	if strings.Contains(err.Error(), "timeout") ||
+		errors.Is(err, context.DeadlineExceeded) {
+		return true
+	}
+
+	return status.Code(UnwrapErr(err)) == codes.DeadlineExceeded
+}

internal/service/frostfs/multi_object_reader.go

@@ -0,0 +1,241 @@
+package frostfs
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+)
+
+// PartInfo is upload information about part.
+type PartInfo struct {
+	Key      string    `json:"key"`
+	UploadID string    `json:"uploadId"`
+	Number   int       `json:"number"`
+	OID      oid.ID    `json:"oid"`
+	Size     uint64    `json:"size"`
+	ETag     string    `json:"etag"`
+	MD5      string    `json:"md5"`
+	Created  time.Time `json:"created"`
+}
+
+type GetFrostFSParams struct {
+	// payload range
+	Off, Ln uint64
+	Addr    oid.Address
+}
+
+type PartObj struct {
+	OID  oid.ID
+	Size uint64
+}
+
+type readerInitiator interface {
+	InitFrostFSObjectPayloadReader(ctx context.Context, p GetFrostFSParams) (io.ReadCloser, error)
+}
+
+// MultiObjectReader implements io.Reader of payloads of the object list stored in the FrostFS network.
+type MultiObjectReader struct {
+	ctx context.Context
+
+	layer readerInitiator
+
+	startPartOffset uint64
+	endPartLength   uint64
+
+	prm GetFrostFSParams
+
+	curIndex  int
+	curReader io.ReadCloser
+
+	parts []PartObj
+}
+
+type MultiObjectReaderConfig struct {
+	Initiator readerInitiator
+
+	// the offset of complete object and total size to read
+	Off, Ln uint64
+
+	Addr  oid.Address
+	Parts []PartObj
+}
+
+var (
+	errOffsetIsOutOfRange = errors.New("offset is out of payload range")
+	errLengthIsOutOfRange = errors.New("length is out of payload range")
+	errEmptyPartsList     = errors.New("empty parts list")
+	errorZeroRangeLength  = errors.New("zero range length")
+)
+
+func (x *FrostFS) InitMultiObjectReader(ctx context.Context, p handler.PrmInitMultiObjectReader) (io.Reader, error) {
+	combinedObj, err := x.GetObject(ctx, handler.PrmObjectGet{
+		PrmAuth: handler.PrmAuth{BearerToken: p.Bearer},
+		Address: p.Addr,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("get combined object '%s': %w", p.Addr.Object().EncodeToString(), err)
+	}
+
+	var parts []*PartInfo
+	if err = json.NewDecoder(combinedObj.Payload).Decode(&parts); err != nil {
+		return nil, fmt.Errorf("unmarshal combined object parts: %w", err)
+	}
+
+	objParts := make([]PartObj, len(parts))
+	for i, part := range parts {
+		objParts[i] = PartObj{
+			OID:  part.OID,
+			Size: part.Size,
+		}
+	}
+
+	return NewMultiObjectReader(ctx, MultiObjectReaderConfig{
+		Initiator: x,
+		Off:       p.Off,
+		Ln:        p.Ln,
+		Parts:     objParts,
+		Addr:      p.Addr,
+	})
+}
+
+func NewMultiObjectReader(ctx context.Context, cfg MultiObjectReaderConfig) (*MultiObjectReader, error) {
+	if len(cfg.Parts) == 0 {
+		return nil, errEmptyPartsList
+	}
+
+	r := &MultiObjectReader{
+		ctx:   ctx,
+		layer: cfg.Initiator,
+		prm: GetFrostFSParams{
+			Addr: cfg.Addr,
+		},
+		parts: cfg.Parts,
+	}
+
+	if cfg.Off+cfg.Ln == 0 {
+		return r, nil
+	}
+
+	if cfg.Off > 0 && cfg.Ln == 0 {
+		return nil, errorZeroRangeLength
+	}
+
+	startPartIndex, startPartOffset := findStartPart(cfg)
+	if startPartIndex == -1 {
+		return nil, errOffsetIsOutOfRange
+	}
+	r.startPartOffset = startPartOffset
+
+	endPartIndex, endPartLength := findEndPart(cfg)
+	if endPartIndex == -1 {
+		return nil, errLengthIsOutOfRange
+	}
+	r.endPartLength = endPartLength
+
+	r.parts = cfg.Parts[startPartIndex : endPartIndex+1]
+
+	return r, nil
+}
+
+func findStartPart(cfg MultiObjectReaderConfig) (index int, offset uint64) {
+	position := cfg.Off
+	for i, part := range cfg.Parts {
+		// Strict inequality when searching for start position to avoid reading zero length part.
+		if position < part.Size {
+			return i, position
+		}
+		position -= part.Size
+	}
+
+	return -1, 0
+}
+
+func findEndPart(cfg MultiObjectReaderConfig) (index int, length uint64) {
+	position := cfg.Off + cfg.Ln
+	for i, part := range cfg.Parts {
+		// Non-strict inequality when searching for end position to avoid out of payload range error.
+		if position <= part.Size {
+			return i, position
+		}
+		position -= part.Size
+	}
+
+	return -1, 0
+}
+
+func (x *MultiObjectReader) Read(p []byte) (n int, err error) {
+	if x.curReader != nil {
+		n, err = x.curReader.Read(p)
+		if err != nil {
+			if closeErr := x.curReader.Close(); closeErr != nil {
+				return n, fmt.Errorf("%w (close err: %v)", err, closeErr)
+			}
+		}
+		if !errors.Is(err, io.EOF) {
+			return n, err
+		}
+
+		x.curIndex++
+	}
+
+	if x.curIndex == len(x.parts) {
+		return n, io.EOF
+	}
+
+	x.prm.Addr.SetObject(x.parts[x.curIndex].OID)
+
+	if x.curIndex == 0 {
+		x.prm.Off = x.startPartOffset
+		x.prm.Ln = x.parts[x.curIndex].Size - x.startPartOffset
+	}
+
+	if x.curIndex == len(x.parts)-1 {
+		x.prm.Ln = x.endPartLength - x.prm.Off
+	}
+
+	x.curReader, err = x.layer.InitFrostFSObjectPayloadReader(x.ctx, x.prm)
+	if err != nil {
+		return n, fmt.Errorf("init payload reader for the next part: %w", err)
+	}
+
+	x.prm.Off = 0
+	x.prm.Ln = 0
+
+	next, err := x.Read(p[n:])
+
+	return n + next, err
+}
+
+// InitFrostFSObjectPayloadReader initializes payload reader of the FrostFS object.
+// Zero range corresponds to full payload (panics if only offset is set).
+func (x *FrostFS) InitFrostFSObjectPayloadReader(ctx context.Context, p GetFrostFSParams) (io.ReadCloser, error) {
+	var prmAuth handler.PrmAuth
+
+	if p.Off+p.Ln != 0 {
+		prm := handler.PrmObjectRange{
+			PrmAuth:      prmAuth,
+			PayloadRange: [2]uint64{p.Off, p.Ln},
+			Address:      p.Addr,
+		}
+
+		return x.RangeObject(ctx, prm)
+	}
+
+	prm := handler.PrmObjectGet{
+		PrmAuth: prmAuth,
+		Address: p.Addr,
+	}
+
+	res, err := x.GetObject(ctx, prm)
+	if err != nil {
+		return nil, err
+	}
+
+	return res.Payload, nil
+}

internal/service/frostfs/multi_object_reader_test.go

@@ -0,0 +1,137 @@
+package frostfs
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"testing"
+
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
+	"github.com/stretchr/testify/require"
+)
+
+type readerInitiatorMock struct {
+	parts map[oid.ID][]byte
+}
+
+func (r *readerInitiatorMock) InitFrostFSObjectPayloadReader(_ context.Context, p GetFrostFSParams) (io.ReadCloser, error) {
+	partPayload, ok := r.parts[p.Addr.Object()]
+	if !ok {
+		return nil, errors.New("part not found")
+	}
+
+	if p.Off+p.Ln == 0 {
+		return io.NopCloser(bytes.NewReader(partPayload)), nil
+	}
+
+	if p.Off > uint64(len(partPayload)-1) {
+		return nil, fmt.Errorf("invalid offset: %d/%d", p.Off, len(partPayload))
+	}
+
+	if p.Off+p.Ln > uint64(len(partPayload)) {
+		return nil, fmt.Errorf("invalid range: %d-%d/%d", p.Off, p.Off+p.Ln, len(partPayload))
+	}
+
+	return io.NopCloser(bytes.NewReader(partPayload[p.Off : p.Off+p.Ln])), nil
+}
+
+func prepareDataReader() ([]byte, []PartObj, *readerInitiatorMock) {
+	mockInitReader := &readerInitiatorMock{
+		parts: map[oid.ID][]byte{
+			oidtest.ID(): []byte("first part 1"),
+			oidtest.ID(): []byte("second part 2"),
+			oidtest.ID(): []byte("third part 3"),
+		},
+	}
+
+	var fullPayload []byte
+	parts := make([]PartObj, 0, len(mockInitReader.parts))
+	for id, payload := range mockInitReader.parts {
+		parts = append(parts, PartObj{OID: id, Size: uint64(len(payload))})
+		fullPayload = append(fullPayload, payload...)
+	}
+
+	return fullPayload, parts, mockInitReader
+}
+
+func TestMultiReader(t *testing.T) {
+	ctx := context.Background()
+
+	fullPayload, parts, mockInitReader := prepareDataReader()
+
+	for _, tc := range []struct {
+		name string
+		off  uint64
+		ln   uint64
+		err  error
+	}{
+		{
+			name: "simple read all",
+		},
+		{
+			name: "simple read with length",
+			ln:   uint64(len(fullPayload)),
+		},
+		{
+			name: "middle of parts",
+			off:  parts[0].Size + 2,
+			ln:   4,
+		},
+		{
+			name: "first and second",
+			off:  parts[0].Size - 4,
+			ln:   8,
+		},
+		{
+			name: "first and third",
+			off:  parts[0].Size - 4,
+			ln:   parts[1].Size + 8,
+		},
+		{
+			name: "second part",
+			off:  parts[0].Size,
+			ln:   parts[1].Size,
+		},
+		{
+			name: "second and third",
+			off:  parts[0].Size,
+			ln:   parts[1].Size + parts[2].Size,
+		},
+		{
+			name: "offset out of range",
+			off:  uint64(len(fullPayload) + 1),
+			ln:   1,
+			err:  errOffsetIsOutOfRange,
+		},
+		{
+			name: "zero length",
+			off:  parts[1].Size + 1,
+			ln:   0,
+			err:  errorZeroRangeLength,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			multiReader, err := NewMultiObjectReader(ctx, MultiObjectReaderConfig{
+				Initiator: mockInitReader,
+				Parts:     parts,
+				Off:       tc.off,
+				Ln:        tc.ln,
+			})
+			require.ErrorIs(t, err, tc.err)
+
+			if tc.err == nil {
+				off := tc.off
+				ln := tc.ln
+				if off+ln == 0 {
+					ln = uint64(len(fullPayload))
+				}
+				data, err := io.ReadAll(multiReader)
+				require.NoError(t, err)
+				require.Equal(t, fullPayload[off:off+ln], data)
+			}
+		})
+	}
+}

internal/service/frostfs/tree_pool_wrapper.go

@@ -0,0 +1,163 @@
+package frostfs
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
+	apitree "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/tree"
+	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
+)
+
+type GetNodeByPathResponseInfoWrapper struct {
+	response *apitree.GetNodeByPathResponseInfo
+}
+
+func (n GetNodeByPathResponseInfoWrapper) GetNodeID() []uint64 {
+	return []uint64{n.response.GetNodeID()}
+}
+
+func (n GetNodeByPathResponseInfoWrapper) GetParentID() []uint64 {
+	return []uint64{n.response.GetParentID()}
+}
+
+func (n GetNodeByPathResponseInfoWrapper) GetTimestamp() []uint64 {
+	return []uint64{n.response.GetTimestamp()}
+}
+
+func (n GetNodeByPathResponseInfoWrapper) GetMeta() []tree.Meta {
+	res := make([]tree.Meta, len(n.response.GetMeta()))
+	for i, value := range n.response.GetMeta() {
+		res[i] = value
+	}
+	return res
+}
+
+type PoolWrapper struct {
+	p *treepool.Pool
+}
+
+func NewPoolWrapper(p *treepool.Pool) *PoolWrapper {
+	return &PoolWrapper{p: p}
+}
+
+func (w *PoolWrapper) GetNodes(ctx context.Context, prm *tree.GetNodesParams) ([]tree.NodeResponse, error) {
+	poolPrm := treepool.GetNodesParams{
+		CID:           prm.CnrID,
+		TreeID:        prm.TreeID,
+		Path:          prm.Path,
+		Meta:          prm.Meta,
+		PathAttribute: tree.FileNameKey,
+		LatestOnly:    prm.LatestOnly,
+		AllAttrs:      prm.AllAttrs,
+		BearerToken:   getBearer(ctx),
+	}
+
+	nodes, err := w.p.GetNodes(ctx, poolPrm)
+	if err != nil {
+		return nil, handleError(err)
+	}
+
+	res := make([]tree.NodeResponse, len(nodes))
+	for i, info := range nodes {
+		res[i] = GetNodeByPathResponseInfoWrapper{info}
+	}
+
+	return res, nil
+}
+
+func getBearer(ctx context.Context) []byte {
+	token, err := tokens.LoadBearerToken(ctx)
+	if err != nil {
+		return nil
+	}
+	return token.Marshal()
+}
+
+func handleError(err error) error {
+	if err == nil {
+		return nil
+	}
+	if errors.Is(err, treepool.ErrNodeNotFound) {
+		return fmt.Errorf("%w: %s", tree.ErrNodeNotFound, err.Error())
+	}
+	if errors.Is(err, treepool.ErrNodeAccessDenied) {
+		return fmt.Errorf("%w: %s", tree.ErrNodeAccessDenied, err.Error())
+	}
+
+	return err
+}
+
+func (w *PoolWrapper) GetSubTree(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID []uint64, depth uint32, sort bool) ([]tree.NodeResponse, error) {
+	order := treepool.NoneOrder
+	if sort {
+		order = treepool.AscendingOrder
+	}
+	poolPrm := treepool.GetSubTreeParams{
+		CID:         bktInfo.CID,
+		TreeID:      treeID,
+		RootID:      rootID,
+		Depth:       depth,
+		BearerToken: getBearer(ctx),
+		Order:       order,
+	}
+	if len(rootID) == 1 && rootID[0] == 0 {
+		// storage node interprets 'nil' value as []uint64{0}
+		// gate wants to send 'nil' value instead of []uint64{0}, because
+		// it provides compatibility with previous tree service api where
+		// single uint64(0) value is dropped from signature
+		poolPrm.RootID = nil
+	}
+
+	subTreeReader, err := w.p.GetSubTree(ctx, poolPrm)
+	if err != nil {
+		return nil, handleError(err)
+	}
+
+	var subtree []tree.NodeResponse
+
+	node, err := subTreeReader.Next()
+	for err == nil {
+		subtree = append(subtree, GetSubTreeResponseBodyWrapper{node})
+		node, err = subTreeReader.Next()
+	}
+	if err != io.EOF {
+		return nil, handleError(err)
+	}
+
+	return subtree, nil
+}
+
+type GetSubTreeResponseBodyWrapper struct {
+	response *apitree.GetSubTreeResponseBody
+}
+
+func (n GetSubTreeResponseBodyWrapper) GetNodeID() []uint64 {
+	return n.response.GetNodeID()
+}
+
+func (n GetSubTreeResponseBodyWrapper) GetParentID() []uint64 {
+	resp := n.response.GetParentID()
+	if resp == nil {
+		// storage sends nil that should be interpreted as []uint64{0}
+		// due to protobuf compatibility, see 'GetSubTree' function
+		return []uint64{0}
+	}
+	return resp
+}
+
+func (n GetSubTreeResponseBodyWrapper) GetTimestamp() []uint64 {
+	return n.response.GetTimestamp()
+}
+
+func (n GetSubTreeResponseBodyWrapper) GetMeta() []tree.Meta {
+	res := make([]tree.Meta, len(n.response.GetMeta()))
+	for i, value := range n.response.GetMeta() {
+		res[i] = value
+	}
+	return res
+}

internal/templates/index.gotmpl

@@ -0,0 +1,112 @@
+{{$container := .Container}}
+{{ $prefix := trimPrefix .Prefix }}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>Index of {{.Protocol}}://{{$container}}
+        /{{if $prefix}}/{{$prefix}}/{{end}}</title>
+    <style>
+        .alert {
+            width: 80%;
+            box-sizing: border-box;
+            padding: 20px;
+            background-color: #f44336;
+            color: white;
+            margin-bottom: 15px;
+        }
+        table {
+            width: 80%;
+            border-collapse: collapse;
+        }
+        body {
+            background: #f2f2f2;
+        }
+        table, th, td {
+            border: 0 solid transparent;
+        }
+        th, td {
+            padding: 10px;
+            text-align: left;
+        }
+        th {
+            background-color: #c3bcbc;
+        }
+
+        h1 {
+            font-size: 1.5em;
+        }
+        tr:nth-child(even) {background-color: #ebe7e7;}
+    </style>
+</head>
+<body>
+<h1>Index of {{.Protocol}}://{{$container}}/{{if $prefix}}{{$prefix}}/{{end}}</h1>
+{{ if .HasErrors }}
+    <div class="alert">
+        Errors occurred while processing the request. Perhaps some objects are missing
+    </div>
+{{ end }}
+<table>
+    <thead>
+    <tr>
+        <th>Filename</th>
+        <th>OID</th>
+        <th>Size</th>
+        <th>Created</th>
+        <th>Download</th>
+    </tr>
+    </thead>
+    <tbody>
+    {{ $trimmedPrefix := trimPrefix $prefix }}
+    {{if $trimmedPrefix }}
+        <tr>
+            <td>
+                ⮐<a href="/get/{{$container}}{{ urlencode $trimmedPrefix }}/">..</a>
+            </td>
+            <td></td>
+            <td></td>
+            <td></td>
+            <td></td>
+        </tr>
+    {{else}}
+        <tr>
+            <td>
+                ⮐<a href="/get/{{$container}}/">..</a>
+            </td>
+            <td></td>
+            <td></td>
+            <td></td>
+            <td></td>
+        </tr>
+    {{end}}
+    {{range .Objects}}
+        <tr>
+            <td>
+                {{if .IsDir}}
+                    🗀
+                    <a href="{{.GetURL}}/">
+                        {{.FileName}}/
+                    </a>
+                {{else}}
+                    🗎
+                    <a href="{{ .GetURL }}">
+                        {{.FileName}}
+                    </a>
+                {{end}}
+            </td>
+            <td>{{.OID}}</td>
+            <td>{{if not .IsDir}}{{ formatSize .Size }}{{end}}</td>
+            <td>{{ .Created }}</td>
+            <td>
+                {{ if .OID }}
+                    <a href="{{ .GetURL }}?download=true">
+                        Link
+                    </a>
+                {{ end }}
+            </td>
+        </tr>
+    {{end}}
+    </tbody>
+</table>
+</body>
+</html>

internal/templates/template.go

@@ -0,0 +1,6 @@
+package templates
+
+import _ "embed"
+
+//go:embed index.gotmpl
+var DefaultIndexTemplate string

metrics/desc.go

@@ -0,0 +1,168 @@
+package metrics
+
+import (
+	"encoding/json"
+
+	"github.com/prometheus/client_golang/prometheus"
+	dto "github.com/prometheus/client_model/go"
+)
+
+var appMetricsDesc = map[string]map[string]Description{
+	poolSubsystem: {
+		overallErrorsMetric: Description{
+			Type:      dto.MetricType_GAUGE,
+			Namespace: namespace,
+			Subsystem: poolSubsystem,
+			Name:      overallErrorsMetric,
+			Help:      "Total number of errors in pool",
+		},
+		overallNodeErrorsMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      poolSubsystem,
+			Name:           overallNodeErrorsMetric,
+			Help:           "Total number of errors for connection in pool",
+			VariableLabels: []string{"node"},
+		},
+		overallNodeRequestsMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      poolSubsystem,
+			Name:           overallNodeRequestsMetric,
+			Help:           "Total number of requests to specific node in pool",
+			VariableLabels: []string{"node"},
+		},
+		currentErrorMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      poolSubsystem,
+			Name:           currentErrorMetric,
+			Help:           "Number of errors on current connections that will be reset after the threshold",
+			VariableLabels: []string{"node"},
+		},
+		avgRequestDurationMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      poolSubsystem,
+			Name:           avgRequestDurationMetric,
+			Help:           "Average request duration (in milliseconds) for specific method on node in pool",
+			VariableLabels: []string{"node", "method"},
+		},
+	},
+	stateSubsystem: {
+		healthMetric: Description{
+			Type:      dto.MetricType_GAUGE,
+			Namespace: namespace,
+			Subsystem: stateSubsystem,
+			Name:      healthMetric,
+			Help:      "Current HTTP gateway state",
+		},
+		versionInfoMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      stateSubsystem,
+			Name:           versionInfoMetric,
+			Help:           "Version of current FrostFS HTTP Gate instance",
+			VariableLabels: []string{"version"},
+		},
+	},
+	serverSubsystem: {
+		healthMetric: Description{
+			Type:           dto.MetricType_GAUGE,
+			Namespace:      namespace,
+			Subsystem:      serverSubsystem,
+			Name:           healthMetric,
+			Help:           "HTTP Server endpoint health",
+			VariableLabels: []string{"endpoint"},
+		},
+	},
+	statisticSubsystem: {
+		droppedLogs: Description{
+			Type:      dto.MetricType_COUNTER,
+			Namespace: namespace,
+			Subsystem: statisticSubsystem,
+			Name:      droppedLogs,
+			Help:      "Dropped logs (by sampling) count",
+		},
+	},
+}
+
+type Description struct {
+	Type           dto.MetricType
+	Namespace      string
+	Subsystem      string
+	Name           string
+	Help           string
+	ConstantLabels prometheus.Labels
+	VariableLabels []string
+}
+
+func (d *Description) MarshalJSON() ([]byte, error) {
+	return json.Marshal(&struct {
+		Type           string            `json:"type"`
+		FQName         string            `json:"name"`
+		Help           string            `json:"help"`
+		ConstantLabels prometheus.Labels `json:"constant_labels,omitempty"`
+		VariableLabels []string          `json:"variable_labels,omitempty"`
+	}{
+		Type:           d.Type.String(),
+		FQName:         d.BuildFQName(),
+		Help:           d.Help,
+		ConstantLabels: d.ConstantLabels,
+		VariableLabels: d.VariableLabels,
+	})
+}
+
+func (d *Description) BuildFQName() string {
+	return prometheus.BuildFQName(d.Namespace, d.Subsystem, d.Name)
+}
+
+// DescribeAll returns descriptions for metrics.
+func DescribeAll() []Description {
+	var list []Description
+	for _, m := range appMetricsDesc {
+		for _, description := range m {
+			list = append(list, description)
+		}
+	}
+
+	return list
+}
+
+func newOpts(description Description) prometheus.Opts {
+	return prometheus.Opts{
+		Namespace:   description.Namespace,
+		Subsystem:   description.Subsystem,
+		Name:        description.Name,
+		Help:        description.Help,
+		ConstLabels: description.ConstantLabels,
+	}
+}
+
+func mustNewGauge(description Description) prometheus.Gauge {
+	if description.Type != dto.MetricType_GAUGE {
+		panic("invalid metric type")
+	}
+	return prometheus.NewGauge(
+		prometheus.GaugeOpts(newOpts(description)),
+	)
+}
+
+func mustNewGaugeVec(description Description) *prometheus.GaugeVec {
+	if description.Type != dto.MetricType_GAUGE {
+		panic("invalid metric type")
+	}
+	return prometheus.NewGaugeVec(
+		prometheus.GaugeOpts(newOpts(description)),
+		description.VariableLabels,
+	)
+}
+
+func mustNewCounter(description Description) prometheus.Counter {
+	if description.Type != dto.MetricType_COUNTER {
+		panic("invalid metric type")
+	}
+	return prometheus.NewCounter(
+		prometheus.CounterOpts(newOpts(description)),
+	)
+}

metrics/desc_test.go

@@ -0,0 +1,37 @@
+//go:build dump_metrics
+
+package metrics
+
+import (
+	"encoding/json"
+	"flag"
+	"os"
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"github.com/stretchr/testify/require"
+)
+
+type mock struct{}
+
+func (m mock) Statistic() pool.Statistic {
+	return pool.Statistic{}
+}
+
+var metricsPath = flag.String("out", "", "File to export http gateway metrics to.")
+
+func TestDescribeAll(t *testing.T) {
+	// to check correct metrics type mapping
+	_ = NewGateMetrics(mock{})
+
+	flag.Parse()
+
+	require.NotEmpty(t, metricsPath, "flag 'out' must be provided to dump metrics description")
+
+	desc := DescribeAll()
+	data, err := json.Marshal(desc)
+	require.NoError(t, err)
+
+	err = os.WriteFile(*metricsPath, data, 0644)
+	require.NoError(t, err)
+}

metrics/metrics.go

@@ -10,38 +10,79 @@ import (
 )
 
 const (
-	namespace      = "frostfs_http_gw"
-	stateSubsystem = "state"
-	poolSubsystem  = "pool"
-
-	methodGetBalance       = "get_balance"
-	methodPutContainer     = "put_container"
-	methodGetContainer     = "get_container"
-	methodListContainer    = "list_container"
-	methodDeleteContainer  = "delete_container"
-	methodGetContainerEacl = "get_container_eacl"
-	methodSetContainerEacl = "set_container_eacl"
-	methodEndpointInfo     = "endpoint_info"
-	methodNetworkInfo      = "network_info"
-	methodPutObject        = "put_object"
-	methodDeleteObject     = "delete_object"
-	methodGetObject        = "get_object"
-	methodHeadObject       = "head_object"
-	methodRangeObject      = "range_object"
-	methodCreateSession    = "create_session"
+	namespace          = "frostfs_http_gw"
+	stateSubsystem     = "state"
+	poolSubsystem      = "pool"
+	serverSubsystem    = "server"
+	statisticSubsystem = "statistic"
 )
 
+const (
+	healthMetric      = "health"
+	versionInfoMetric = "version_info"
+	droppedLogs       = "dropped_logs"
+)
+
+const (
+	overallErrorsMetric       = "overall_errors"
+	overallNodeErrorsMetric   = "overall_node_errors"
+	overallNodeRequestsMetric = "overall_node_requests"
+	currentErrorMetric        = "current_errors"
+	avgRequestDurationMetric  = "avg_request_duration"
+)
+
+const (
+	methodGetBalance      = "get_balance"
+	methodPutContainer    = "put_container"
+	methodGetContainer    = "get_container"
+	methodListContainer   = "list_container"
+	methodDeleteContainer = "delete_container"
+	methodEndpointInfo    = "endpoint_info"
+	methodNetworkInfo     = "network_info"
+	methodPutObject       = "put_object"
+	methodDeleteObject    = "delete_object"
+	methodGetObject       = "get_object"
+	methodHeadObject      = "head_object"
+	methodRangeObject     = "range_object"
+	methodCreateSession   = "create_session"
+)
+
+// HealthStatus of the gate application.
+type HealthStatus int32
+
+const (
+	HealthStatusUndefined    HealthStatus = 0
+	HealthStatusStarting     HealthStatus = 1
+	HealthStatusReady        HealthStatus = 2
+	HealthStatusShuttingDown HealthStatus = 3
+)
+
+type StatisticScraper interface {
+	Statistic() pool.Statistic
+}
+
+type serverMetrics struct {
+	endpointHealth *prometheus.GaugeVec
+}
+
 type GateMetrics struct {
 	stateMetrics
 	poolMetricsCollector
+	serverMetrics
+	statisticMetrics
 }
 
 type stateMetrics struct {
 	healthCheck prometheus.Gauge
+	versionInfo *prometheus.GaugeVec
+}
+
+type statisticMetrics struct {
+	droppedLogs prometheus.Counter
 }
 
 type poolMetricsCollector struct {
-	pool                *pool.Pool
+	scraper             StatisticScraper
 	overallErrors       prometheus.Gauge
 	overallNodeErrors   *prometheus.GaugeVec
 	overallNodeRequests *prometheus.GaugeVec
@@ -50,113 +91,88 @@ type poolMetricsCollector struct {
 }
 
 // NewGateMetrics creates new metrics for http gate.
-func NewGateMetrics(p *pool.Pool) *GateMetrics {
+func NewGateMetrics(p StatisticScraper) *GateMetrics {
 	stateMetric := newStateMetrics()
 	stateMetric.register()
 
 	poolMetric := newPoolMetricsCollector(p)
 	poolMetric.register()
 
+	serverMetric := newServerMetrics()
+	serverMetric.register()
+
+	statsMetric := newStatisticMetrics()
+	statsMetric.register()
+
 	return &GateMetrics{
 		stateMetrics:         *stateMetric,
 		poolMetricsCollector: *poolMetric,
+		serverMetrics:        *serverMetric,
+		statisticMetrics:     *statsMetric,
 	}
 }
 
 func (g *GateMetrics) Unregister() {
 	g.stateMetrics.unregister()
 	prometheus.Unregister(&g.poolMetricsCollector)
+	g.serverMetrics.unregister()
+	g.statisticMetrics.unregister()
 }
 
 func newStateMetrics() *stateMetrics {
 	return &stateMetrics{
-		healthCheck: prometheus.NewGauge(prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: stateSubsystem,
-			Name:      "health",
-			Help:      "Current HTTP gateway state",
-		}),
+		healthCheck: mustNewGauge(appMetricsDesc[stateSubsystem][healthMetric]),
+		versionInfo: mustNewGaugeVec(appMetricsDesc[stateSubsystem][versionInfoMetric]),
 	}
 }
 
+func newStatisticMetrics() *statisticMetrics {
+	return &statisticMetrics{
+		droppedLogs: mustNewCounter(appMetricsDesc[statisticSubsystem][droppedLogs]),
+	}
+}
+
+func (s *statisticMetrics) register() {
+	prometheus.MustRegister(s.droppedLogs)
+}
+
+func (s *statisticMetrics) unregister() {
+	prometheus.Unregister(s.droppedLogs)
+}
+
 func (m stateMetrics) register() {
 	prometheus.MustRegister(m.healthCheck)
+	prometheus.MustRegister(m.versionInfo)
 }
 
 func (m stateMetrics) unregister() {
 	prometheus.Unregister(m.healthCheck)
+	prometheus.Unregister(m.versionInfo)
 }
 
-func (m stateMetrics) SetHealth(s int32) {
+func (m stateMetrics) SetHealth(s HealthStatus) {
 	m.healthCheck.Set(float64(s))
 }
 
-func newPoolMetricsCollector(p *pool.Pool) *poolMetricsCollector {
-	overallErrors := prometheus.NewGauge(
-		prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: poolSubsystem,
-			Name:      "overall_errors",
-			Help:      "Total number of errors in pool",
-		},
-	)
+func (m stateMetrics) SetVersion(ver string) {
+	m.versionInfo.WithLabelValues(ver).Set(1)
+}
 
-	overallNodeErrors := prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: poolSubsystem,
-			Name:      "overall_node_errors",
-			Help:      "Total number of errors for connection in pool",
-		},
-		[]string{
-			"node",
-		},
-	)
-
-	overallNodeRequests := prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: poolSubsystem,
-			Name:      "overall_node_requests",
-			Help:      "Total number of requests to specific node in pool",
-		},
-		[]string{
-			"node",
-		},
-	)
-
-	currentErrors := prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: poolSubsystem,
-			Name:      "current_errors",
-			Help:      "Number of errors on current connections that will be reset after the threshold",
-		},
-		[]string{
-			"node",
-		},
-	)
-
-	requestsDuration := prometheus.NewGaugeVec(
-		prometheus.GaugeOpts{
-			Namespace: namespace,
-			Subsystem: poolSubsystem,
-			Name:      "avg_request_duration",
-			Help:      "Average request duration (in milliseconds) for specific method on node in pool",
-		},
-		[]string{
-			"node",
-			"method",
-		},
-	)
+func (s *statisticMetrics) DroppedLogsInc() {
+	if s == nil {
+		return
+	}
+	s.droppedLogs.Inc()
+}
 
+func newPoolMetricsCollector(p StatisticScraper) *poolMetricsCollector {
 	return &poolMetricsCollector{
-		pool:                p,
-		overallErrors:       overallErrors,
-		overallNodeErrors:   overallNodeErrors,
-		overallNodeRequests: overallNodeRequests,
-		currentErrors:       currentErrors,
-		requestDuration:     requestsDuration,
+		scraper:             p,
+		overallErrors:       mustNewGauge(appMetricsDesc[poolSubsystem][overallErrorsMetric]),
+		overallNodeErrors:   mustNewGaugeVec(appMetricsDesc[poolSubsystem][overallNodeErrorsMetric]),
+		overallNodeRequests: mustNewGaugeVec(appMetricsDesc[poolSubsystem][overallNodeRequestsMetric]),
+		currentErrors:       mustNewGaugeVec(appMetricsDesc[poolSubsystem][currentErrorMetric]),
+		requestDuration:     mustNewGaugeVec(appMetricsDesc[poolSubsystem][avgRequestDurationMetric]),
 	}
 }
 
@@ -182,7 +198,7 @@ func (m *poolMetricsCollector) register() {
 }
 
 func (m *poolMetricsCollector) updateStatistic() {
-	stat := m.pool.Statistic()
+	stat := m.scraper.Statistic()
 
 	m.overallNodeErrors.Reset()
 	m.overallNodeRequests.Reset()
@@ -206,8 +222,6 @@ func (m *poolMetricsCollector) updateRequestsDuration(node pool.NodeStatistic) {
 	m.requestDuration.WithLabelValues(node.Address(), methodGetContainer).Set(float64(node.AverageGetContainer().Milliseconds()))
 	m.requestDuration.WithLabelValues(node.Address(), methodListContainer).Set(float64(node.AverageListContainer().Milliseconds()))
 	m.requestDuration.WithLabelValues(node.Address(), methodDeleteContainer).Set(float64(node.AverageDeleteContainer().Milliseconds()))
-	m.requestDuration.WithLabelValues(node.Address(), methodGetContainerEacl).Set(float64(node.AverageGetContainerEACL().Milliseconds()))
-	m.requestDuration.WithLabelValues(node.Address(), methodSetContainerEacl).Set(float64(node.AverageSetContainerEACL().Milliseconds()))
 	m.requestDuration.WithLabelValues(node.Address(), methodEndpointInfo).Set(float64(node.AverageEndpointInfo().Milliseconds()))
 	m.requestDuration.WithLabelValues(node.Address(), methodNetworkInfo).Set(float64(node.AverageNetworkInfo().Milliseconds()))
 	m.requestDuration.WithLabelValues(node.Address(), methodPutObject).Set(float64(node.AveragePutObject().Milliseconds()))
@@ -218,6 +232,28 @@ func (m *poolMetricsCollector) updateRequestsDuration(node pool.NodeStatistic) {
 	m.requestDuration.WithLabelValues(node.Address(), methodCreateSession).Set(float64(node.AverageCreateSession().Milliseconds()))
 }
 
+func newServerMetrics() *serverMetrics {
+	return &serverMetrics{
+		endpointHealth: mustNewGaugeVec(appMetricsDesc[serverSubsystem][healthMetric]),
+	}
+}
+
+func (m serverMetrics) register() {
+	prometheus.MustRegister(m.endpointHealth)
+}
+
+func (m serverMetrics) unregister() {
+	prometheus.Unregister(m.endpointHealth)
+}
+
+func (m serverMetrics) MarkHealthy(endpoint string) {
+	m.endpointHealth.WithLabelValues(endpoint).Set(float64(1))
+}
+
+func (m serverMetrics) MarkUnhealthy(endpoint string) {
+	m.endpointHealth.WithLabelValues(endpoint).Set(float64(0))
+}
+
 // NewPrometheusService creates a new service for gathering prometheus metrics.
 func NewPrometheusService(log *zap.Logger, cfg Config) *Service {
 	if log == nil {

metrics/service.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"net/http"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"go.uber.org/zap"
 )
 
@@ -24,21 +25,24 @@ type Config struct {
 // Start runs http service with the exposed endpoint on the configured port.
 func (ms *Service) Start() {
 	if ms.enabled {
-		ms.log.Info("service is running", zap.String("endpoint", ms.Addr))
+		ms.log.Info(logs.ServiceIsRunning, zap.String("endpoint", ms.Addr))
 		err := ms.ListenAndServe()
 		if err != nil && err != http.ErrServerClosed {
-			ms.log.Warn("service couldn't start on configured port")
+			ms.log.Warn(logs.ServiceCouldntStartOnConfiguredPort)
 		}
 	} else {
-		ms.log.Info("service hasn't started since it's disabled")
+		ms.log.Info(logs.ServiceHasntStartedSinceItsDisabled)
 	}
 }
 
 // ShutDown stops the service.
 func (ms *Service) ShutDown(ctx context.Context) {
-	ms.log.Info("shutting down service", zap.String("endpoint", ms.Addr))
+	ms.log.Info(logs.ShuttingDownService, zap.String("endpoint", ms.Addr))
 	err := ms.Shutdown(ctx)
 	if err != nil {
-		ms.log.Panic("can't shut down service")
+		ms.log.Error(logs.CantGracefullyShutDownService, zap.Error(err))
+		if err = ms.Close(); err != nil {
+			ms.log.Panic(logs.CantShutDownService, zap.Error(err))
+		}
 	}
 }

resolver/frostfs.go

@@ -1,35 +0,0 @@
-package resolver
-
-import (
-	"context"
-	"errors"
-	"fmt"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-)
-
-// FrostFSResolver represents virtual connection to the FrostFS network.
-// It implements resolver.FrostFS.
-type FrostFSResolver struct {
-	pool *pool.Pool
-}
-
-// NewFrostFSResolver creates new FrostFSResolver using provided pool.Pool.
-func NewFrostFSResolver(p *pool.Pool) *FrostFSResolver {
-	return &FrostFSResolver{pool: p}
-}
-
-// SystemDNS implements resolver.FrostFS interface method.
-func (x *FrostFSResolver) SystemDNS(ctx context.Context) (string, error) {
-	networkInfo, err := x.pool.NetworkInfo(ctx)
-	if err != nil {
-		return "", fmt.Errorf("read network info via client: %w", err)
-	}
-
-	domain := networkInfo.RawNetworkParameter("SystemDNS")
-	if domain == nil {
-		return "", errors.New("system DNS parameter not found or empty")
-	}
-
-	return string(domain), nil
-}

resolver/resolver.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"sync"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/ns"
@@ -28,9 +29,14 @@ type FrostFS interface {
 	SystemDNS(context.Context) (string, error)
 }
 
+type Settings interface {
+	FormContainerZone(ns string) (zone string, isDefault bool)
+}
+
 type Config struct {
 	FrostFS    FrostFS
 	RPCAddress string
+	Settings   Settings
 }
 
 type ContainerResolver struct {
@@ -135,29 +141,43 @@ func (r *ContainerResolver) equals(resolverNames []string) bool {
 func newResolver(name string, cfg *Config) (*Resolver, error) {
 	switch name {
 	case DNSResolver:
-		return NewDNSResolver(cfg.FrostFS)
+		return NewDNSResolver(cfg.FrostFS, cfg.Settings)
 	case NNSResolver:
-		return NewNNSResolver(cfg.RPCAddress)
+		return NewNNSResolver(cfg.RPCAddress, cfg.Settings)
 	default:
 		return nil, fmt.Errorf("unknown resolver: %s", name)
 	}
 }
 
-func NewDNSResolver(frostFS FrostFS) (*Resolver, error) {
+func NewDNSResolver(frostFS FrostFS, settings Settings) (*Resolver, error) {
 	if frostFS == nil {
 		return nil, fmt.Errorf("pool must not be nil for DNS resolver")
 	}
+	if settings == nil {
+		return nil, fmt.Errorf("resolver settings must not be nil for DNS resolver")
+	}
 
 	var dns ns.DNS
 
 	resolveFunc := func(ctx context.Context, name string) (*cid.ID, error) {
-		domain, err := frostFS.SystemDNS(ctx)
+		var err error
+
+		namespace, err := middleware.GetNamespace(ctx)
 		if err != nil {
-			return nil, fmt.Errorf("read system DNS parameter of the FrostFS: %w", err)
+			return nil, err
 		}
 
-		domain = name + "." + domain
+		zone, isDefault := settings.FormContainerZone(namespace)
+		if isDefault {
+			zone, err = frostFS.SystemDNS(ctx)
+			if err != nil {
+				return nil, fmt.Errorf("read system DNS parameter of the FrostFS: %w", err)
+			}
+		}
+
+		domain := name + "." + zone
 		cnrID, err := dns.ResolveContainerName(domain)
+
 		if err != nil {
 			return nil, fmt.Errorf("couldn't resolve container '%s' as '%s': %w", name, domain, err)
 		}
@@ -170,17 +190,32 @@ func NewDNSResolver(frostFS FrostFS) (*Resolver, error) {
 	}, nil
 }
 
-func NewNNSResolver(rpcAddress string) (*Resolver, error) {
+func NewNNSResolver(rpcAddress string, settings Settings) (*Resolver, error) {
+	if rpcAddress == "" {
+		return nil, fmt.Errorf("rpc address must not be empty for NNS resolver")
+	}
+	if settings == nil {
+		return nil, fmt.Errorf("resolver settings must not be nil for NNS resolver")
+	}
+
 	var nns ns.NNS
 
 	if err := nns.Dial(rpcAddress); err != nil {
 		return nil, fmt.Errorf("could not dial nns: %w", err)
 	}
 
-	resolveFunc := func(_ context.Context, name string) (*cid.ID, error) {
+	resolveFunc := func(ctx context.Context, name string) (*cid.ID, error) {
 		var d container.Domain
 		d.SetName(name)
 
+		namespace, err := middleware.GetNamespace(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		zone, _ := settings.FormContainerZone(namespace)
+		d.SetZone(zone)
+
 		cnrID, err := nns.ResolveContainerDomain(d)
 		if err != nil {
 			return nil, fmt.Errorf("couldn't resolve container '%s': %w", name, err)

response/utils.go

@@ -1,7 +1,41 @@
 package response
 
-import "github.com/valyala/fasthttp"
+import (
+	"errors"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
+	sdkstatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
 
 func Error(r *fasthttp.RequestCtx, msg string, code int) {
 	r.Error(msg+"\n", code)
 }
+
+func FormErrorResponse(message string, err error) (int, string, []zap.Field) {
+	var (
+		msg        string
+		statusCode int
+		logFields  []zap.Field
+	)
+
+	st := new(sdkstatus.ObjectAccessDenied)
+
+	switch {
+	case errors.As(err, &st):
+		statusCode = fasthttp.StatusForbidden
+		reason := st.Reason()
+		msg = fmt.Sprintf("%s: %v: %s", message, err, reason)
+		logFields = append(logFields, zap.String("error_detail", reason))
+	case client.IsErrObjectNotFound(err) || client.IsErrContainerNotFound(err):
+		statusCode = fasthttp.StatusNotFound
+		msg = "Not Found"
+	default:
+		statusCode = fasthttp.StatusBadRequest
+		msg = fmt.Sprintf("%s: %v", message, err)
+	}
+
+	return statusCode, msg, logFields
+}

settings.go

@@ -1,393 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"path"
-	"runtime"
-	"sort"
-	"strconv"
-	"strings"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"github.com/spf13/pflag"
-	"github.com/spf13/viper"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-	"go.uber.org/zap/zapcore"
-)
-
-const (
-	defaultRebalanceTimer = 60 * time.Second
-	defaultRequestTimeout = 15 * time.Second
-	defaultConnectTimeout = 10 * time.Second
-	defaultStreamTimeout  = 10 * time.Second
-
-	defaultShutdownTimeout = 15 * time.Second
-
-	defaultPoolErrorThreshold uint32 = 100
-
-	cfgServer      = "server"
-	cfgTLSEnabled  = "tls.enabled"
-	cfgTLSCertFile = "tls.cert_file"
-	cfgTLSKeyFile  = "tls.key_file"
-
-	// Web.
-	cfgWebReadBufferSize     = "web.read_buffer_size"
-	cfgWebWriteBufferSize    = "web.write_buffer_size"
-	cfgWebReadTimeout        = "web.read_timeout"
-	cfgWebWriteTimeout       = "web.write_timeout"
-	cfgWebStreamRequestBody  = "web.stream_request_body"
-	cfgWebMaxRequestBodySize = "web.max_request_body_size"
-
-	// Metrics / Profiler.
-	cfgPrometheusEnabled = "prometheus.enabled"
-	cfgPrometheusAddress = "prometheus.address"
-	cfgPprofEnabled      = "pprof.enabled"
-	cfgPprofAddress      = "pprof.address"
-
-	// Pool config.
-	cfgConTimeout         = "connect_timeout"
-	cfgStreamTimeout      = "stream_timeout"
-	cfgReqTimeout         = "request_timeout"
-	cfgRebalance          = "rebalance_timer"
-	cfgPoolErrorThreshold = "pool_error_threshold"
-
-	// Logger.
-	cfgLoggerLevel = "logger.level"
-
-	// Wallet.
-	cfgWalletPassphrase = "wallet.passphrase"
-	cfgWalletPath       = "wallet.path"
-	cfgWalletAddress    = "wallet.address"
-
-	// Uploader Header.
-	cfgUploaderHeaderEnableDefaultTimestamp = "upload_header.use_default_timestamp"
-
-	// Peers.
-	cfgPeers = "peers"
-
-	// NeoGo.
-	cfgRPCEndpoint = "rpc_endpoint"
-
-	// Resolving.
-	cfgResolveOrder = "resolve_order"
-
-	// Zip compression.
-	cfgZipCompression = "zip.compression"
-
-	// Command line args.
-	cmdHelp          = "help"
-	cmdVersion       = "version"
-	cmdPprof         = "pprof"
-	cmdMetrics       = "metrics"
-	cmdWallet        = "wallet"
-	cmdAddress       = "address"
-	cmdConfig        = "config"
-	cmdConfigDir     = "config-dir"
-	cmdListenAddress = "listen_address"
-)
-
-var ignore = map[string]struct{}{
-	cfgPeers:   {},
-	cmdHelp:    {},
-	cmdVersion: {},
-}
-
-func settings() *viper.Viper {
-	v := viper.New()
-	v.AutomaticEnv()
-	v.SetEnvPrefix(Prefix)
-	v.AllowEmptyEnv(true)
-	v.SetConfigType("yaml")
-	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
-
-	// flags setup:
-	flags := pflag.NewFlagSet("commandline", pflag.ExitOnError)
-	flags.SetOutput(os.Stdout)
-	flags.SortFlags = false
-
-	flags.Bool(cmdPprof, false, "enable pprof")
-	flags.Bool(cmdMetrics, false, "enable prometheus")
-
-	help := flags.BoolP(cmdHelp, "h", false, "show help")
-	version := flags.BoolP(cmdVersion, "v", false, "show version")
-
-	flags.StringP(cmdWallet, "w", "", `path to the wallet`)
-	flags.String(cmdAddress, "", `address of wallet account`)
-	flags.StringArray(cmdConfig, nil, "config paths")
-	flags.String(cmdConfigDir, "", "config dir path")
-	flags.Duration(cfgConTimeout, defaultConnectTimeout, "gRPC connect timeout")
-	flags.Duration(cfgStreamTimeout, defaultStreamTimeout, "gRPC individual message timeout")
-	flags.Duration(cfgReqTimeout, defaultRequestTimeout, "gRPC request timeout")
-	flags.Duration(cfgRebalance, defaultRebalanceTimer, "gRPC connection rebalance timer")
-
-	flags.String(cmdListenAddress, "0.0.0.0:8080", "addresses to listen")
-	flags.String(cfgTLSCertFile, "", "TLS certificate path")
-	flags.String(cfgTLSKeyFile, "", "TLS key path")
-	peers := flags.StringArrayP(cfgPeers, "p", nil, "FrostFS nodes")
-
-	resolveMethods := flags.StringSlice(cfgResolveOrder, []string{resolver.NNSResolver, resolver.DNSResolver}, "set container name resolve order")
-
-	// set defaults:
-
-	// logger:
-	v.SetDefault(cfgLoggerLevel, "debug")
-
-	// pool:
-	v.SetDefault(cfgPoolErrorThreshold, defaultPoolErrorThreshold)
-
-	// web-server:
-	v.SetDefault(cfgWebReadBufferSize, 4096)
-	v.SetDefault(cfgWebWriteBufferSize, 4096)
-	v.SetDefault(cfgWebReadTimeout, time.Minute*10)
-	v.SetDefault(cfgWebWriteTimeout, time.Minute*5)
-	v.SetDefault(cfgWebStreamRequestBody, true)
-	v.SetDefault(cfgWebMaxRequestBodySize, fasthttp.DefaultMaxRequestBodySize)
-
-	// upload header
-	v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
-
-	// zip:
-	v.SetDefault(cfgZipCompression, false)
-
-	// metrics
-	v.SetDefault(cfgPprofAddress, "localhost:8083")
-	v.SetDefault(cfgPrometheusAddress, "localhost:8084")
-
-	// Binding flags
-	if err := v.BindPFlag(cfgPprofEnabled, flags.Lookup(cmdPprof)); err != nil {
-		panic(err)
-	}
-	if err := v.BindPFlag(cfgPrometheusEnabled, flags.Lookup(cmdMetrics)); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlag(cfgWalletPath, flags.Lookup(cmdWallet)); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlag(cfgWalletAddress, flags.Lookup(cmdAddress)); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlags(flags); err != nil {
-		panic(err)
-	}
-
-	if err := v.BindPFlag(cfgServer+".0.address", flags.Lookup(cmdListenAddress)); err != nil {
-		panic(err)
-	}
-	if err := v.BindPFlag(cfgServer+".0."+cfgTLSKeyFile, flags.Lookup(cfgTLSKeyFile)); err != nil {
-		panic(err)
-	}
-	if err := v.BindPFlag(cfgServer+".0."+cfgTLSCertFile, flags.Lookup(cfgTLSCertFile)); err != nil {
-		panic(err)
-	}
-
-	if err := flags.Parse(os.Args); err != nil {
-		panic(err)
-	}
-
-	if v.IsSet(cfgServer+".0."+cfgTLSKeyFile) && v.IsSet(cfgServer+".0."+cfgTLSCertFile) {
-		v.Set(cfgServer+".0."+cfgTLSEnabled, true)
-	}
-
-	if resolveMethods != nil {
-		v.SetDefault(cfgResolveOrder, *resolveMethods)
-	}
-
-	switch {
-	case help != nil && *help:
-		fmt.Printf("FrostFS HTTP Gateway %s\n", Version)
-		flags.PrintDefaults()
-
-		fmt.Println()
-		fmt.Println("Default environments:")
-		fmt.Println()
-		keys := v.AllKeys()
-		sort.Strings(keys)
-
-		for i := range keys {
-			if _, ok := ignore[keys[i]]; ok {
-				continue
-			}
-
-			defaultValue := v.GetString(keys[i])
-			if len(defaultValue) == 0 {
-				continue
-			}
-
-			k := strings.Replace(keys[i], ".", "_", -1)
-			fmt.Printf("%s_%s = %s\n", Prefix, strings.ToUpper(k), defaultValue)
-		}
-
-		fmt.Println()
-		fmt.Println("Peers preset:")
-		fmt.Println()
-
-		fmt.Printf("%s_%s_[N]_ADDRESS = string\n", Prefix, strings.ToUpper(cfgPeers))
-		fmt.Printf("%s_%s_[N]_WEIGHT = float\n", Prefix, strings.ToUpper(cfgPeers))
-
-		os.Exit(0)
-	case version != nil && *version:
-		fmt.Printf("FrostFS HTTP Gateway\nVersion: %s\nGoVersion: %s\n", Version, runtime.Version())
-		os.Exit(0)
-	}
-
-	if err := readInConfig(v); err != nil {
-		panic(err)
-	}
-
-	if peers != nil && len(*peers) > 0 {
-		for i := range *peers {
-			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i])
-			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1)
-			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".priority", 1)
-		}
-	}
-
-	return v
-}
-
-func readInConfig(v *viper.Viper) error {
-	if v.IsSet(cmdConfig) {
-		if err := readConfig(v); err != nil {
-			return err
-		}
-	}
-
-	if v.IsSet(cmdConfigDir) {
-		if err := readConfigDir(v); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func readConfigDir(v *viper.Viper) error {
-	cfgSubConfigDir := v.GetString(cmdConfigDir)
-	entries, err := os.ReadDir(cfgSubConfigDir)
-	if err != nil {
-		return err
-	}
-
-	for _, entry := range entries {
-		if entry.IsDir() {
-			continue
-		}
-		ext := path.Ext(entry.Name())
-		if ext != ".yaml" && ext != ".yml" {
-			continue
-		}
-
-		if err = mergeConfig(v, path.Join(cfgSubConfigDir, entry.Name())); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func readConfig(v *viper.Viper) error {
-	for _, fileName := range v.GetStringSlice(cmdConfig) {
-		if err := mergeConfig(v, fileName); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func mergeConfig(v *viper.Viper, fileName string) error {
-	cfgFile, err := os.Open(fileName)
-	if err != nil {
-		return err
-	}
-
-	defer func() {
-		if errClose := cfgFile.Close(); errClose != nil {
-			panic(errClose)
-		}
-	}()
-
-	if err = v.MergeConfig(cfgFile); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-// newLogger constructs a zap.Logger instance for current application.
-// Panics on failure.
-//
-// Logger is built from zap's production logging configuration with:
-//   - parameterized level (debug by default)
-//   - console encoding
-//   - ISO8601 time encoding
-//
-// Logger records a stack trace for all messages at or above fatal level.
-//
-// See also zapcore.Level, zap.NewProductionConfig, zap.AddStacktrace.
-func newLogger(v *viper.Viper) (*zap.Logger, zap.AtomicLevel) {
-	lvl, err := getLogLevel(v)
-	if err != nil {
-		panic(err)
-	}
-
-	c := zap.NewProductionConfig()
-	c.Level = zap.NewAtomicLevelAt(lvl)
-	c.Encoding = "console"
-	c.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
-
-	l, err := c.Build(
-		zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel)),
-	)
-	if err != nil {
-		panic(fmt.Sprintf("build zap logger instance: %v", err))
-	}
-
-	return l, c.Level
-}
-
-func getLogLevel(v *viper.Viper) (zapcore.Level, error) {
-	var lvl zapcore.Level
-	lvlStr := v.GetString(cfgLoggerLevel)
-	err := lvl.UnmarshalText([]byte(lvlStr))
-	if err != nil {
-		return lvl, fmt.Errorf("incorrect logger level configuration %s (%v), "+
-			"value should be one of %v", lvlStr, err, [...]zapcore.Level{
-			zapcore.DebugLevel,
-			zapcore.InfoLevel,
-			zapcore.WarnLevel,
-			zapcore.ErrorLevel,
-			zapcore.DPanicLevel,
-			zapcore.PanicLevel,
-			zapcore.FatalLevel,
-		})
-	}
-	return lvl, nil
-}
-
-func fetchServers(v *viper.Viper) []ServerInfo {
-	var servers []ServerInfo
-
-	for i := 0; ; i++ {
-		key := cfgServer + "." + strconv.Itoa(i) + "."
-
-		var serverInfo ServerInfo
-		serverInfo.Address = v.GetString(key + "address")
-		serverInfo.TLS.Enabled = v.GetBool(key + cfgTLSEnabled)
-		serverInfo.TLS.KeyFile = v.GetString(key + cfgTLSKeyFile)
-		serverInfo.TLS.CertFile = v.GetString(key + cfgTLSCertFile)
-
-		if serverInfo.Address == "" {
-			break
-		}
-
-		servers = append(servers, serverInfo)
-	}
-
-	return servers
-}

tokens/bearer-token.go

@@ -13,9 +13,11 @@ import (
 
 type fromHandler = func(h *fasthttp.RequestHeader) []byte
 
+type ctxKey string
+
 const (
-	bearerTokenHdr = "Bearer"
-	bearerTokenKey = "__context_bearer_token_key"
+	bearerTokenHdr        = "Bearer"
+	bearerTokenKey ctxKey = "__context_bearer_token_key"
 )
 
 // BearerToken usage:
@@ -48,16 +50,15 @@ func BearerTokenFromCookie(h *fasthttp.RequestHeader) []byte {
 	return auth
 }
 
-// StoreBearerToken extracts a bearer token from the header or cookie and stores
-// it in the request context.
-func StoreBearerToken(ctx *fasthttp.RequestCtx) error {
-	tkn, err := fetchBearerToken(ctx)
+// StoreBearerTokenAppCtx extracts a bearer token from the header or cookie and stores
+// it in the application context.
+func StoreBearerTokenAppCtx(ctx context.Context, c *fasthttp.RequestCtx) (context.Context, error) {
+	tkn, err := fetchBearerToken(c)
 	if err != nil {
-		return err
+		return nil, err
 	}
-	// This is an analog of context.WithValue.
-	ctx.SetUserValue(bearerTokenKey, tkn)
-	return nil
+	newCtx := context.WithValue(ctx, bearerTokenKey, tkn)
+	return newCtx, nil
 }
 
 // LoadBearerToken returns a bearer token stored in the context given (if it's

tokens/bearer-token_test.go

@@ -1,6 +1,9 @@
+//go:build !integration
+
 package tokens
 
 import (
+	"context"
 	"encoding/base64"
 	"testing"
 
@@ -20,19 +23,29 @@ func makeTestCookie(value []byte) *fasthttp.RequestHeader {
 func makeTestHeader(value []byte) *fasthttp.RequestHeader {
 	header := new(fasthttp.RequestHeader)
 	if value != nil {
-		header.Set(fasthttp.HeaderAuthorization, bearerTokenHdr+" "+string(value))
+		header.Set(fasthttp.HeaderAuthorization, string(value))
 	}
 	return header
 }
 
-func Test_fromCookie(t *testing.T) {
+func makeBearer(value string) string {
+	return bearerTokenHdr + " " + value
+}
+
+func TestBearerTokenFromCookie(t *testing.T) {
 	cases := []struct {
 		name   string
 		actual []byte
 		expect []byte
 	}{
-		{name: "empty"},
-		{name: "normal", actual: []byte("TOKEN"), expect: []byte("TOKEN")},
+		{
+			name: "empty",
+		},
+		{
+			name:   "normal",
+			actual: []byte("TOKEN"),
+			expect: []byte("TOKEN"),
+		},
 	}
 
 	for _, tt := range cases {
@@ -42,14 +55,31 @@ func Test_fromCookie(t *testing.T) {
 	}
 }
 
-func Test_fromHeader(t *testing.T) {
+func TestBearerTokenFromHeader(t *testing.T) {
+	validToken := "token"
+	tokenWithoutPrefix := "invalid-token"
+
 	cases := []struct {
 		name   string
 		actual []byte
 		expect []byte
 	}{
-		{name: "empty"},
-		{name: "normal", actual: []byte("TOKEN"), expect: []byte("TOKEN")},
+		{
+			name: "empty",
+		},
+		{
+			name:   "token without the bearer prefix",
+			actual: []byte(tokenWithoutPrefix),
+		},
+		{
+			name:   "token without payload",
+			actual: []byte(makeBearer("")),
+		},
+		{
+			name:   "normal",
+			actual: []byte(makeBearer(validToken)),
+			expect: []byte(validToken),
+		},
 	}
 
 	for _, tt := range cases {
@@ -59,7 +89,7 @@ func Test_fromHeader(t *testing.T) {
 	}
 }
 
-func Test_fetchBearerToken(t *testing.T) {
+func TestFetchBearerToken(t *testing.T) {
 	key, err := keys.NewPrivateKey()
 	require.NoError(t, err)
 	var uid user.ID
@@ -72,43 +102,77 @@ func Test_fetchBearerToken(t *testing.T) {
 	require.NotEmpty(t, t64)
 
 	cases := []struct {
-		name string
-
+		name   string
 		cookie string
 		header string
-
 		error  string
+		nilCtx bool
 		expect *bearer.Token
 	}{
-		{name: "empty"},
-
-		{name: "bad base64 header", header: "WRONG BASE64", error: "can't base64-decode bearer token"},
-		{name: "bad base64 cookie", cookie: "WRONG BASE64", error: "can't base64-decode bearer token"},
-
-		{name: "header token unmarshal error", header: "dGVzdAo=", error: "can't unmarshal bearer token"},
-		{name: "cookie token unmarshal error", cookie: "dGVzdAo=", error: "can't unmarshal bearer token"},
-
+		{
+			name: "empty",
+		},
+		{
+			name:   "nil context",
+			nilCtx: true,
+		},
+		{
+			name:   "bad base64 header",
+			header: "WRONG BASE64",
+			error:  "can't base64-decode bearer token",
+		},
+		{
+			name:   "bad base64 cookie",
+			cookie: "WRONG BASE64",
+			error:  "can't base64-decode bearer token",
+		},
+		{
+			name:   "header token unmarshal error",
+			header: "dGVzdAo=",
+			error:  "can't unmarshal bearer token",
+		},
+		{
+			name:   "cookie token unmarshal error",
+			cookie: "dGVzdAo=",
+			error:  "can't unmarshal bearer token",
+		},
 		{
 			name:   "bad header and cookie",
 			header: "WRONG BASE64",
 			cookie: "dGVzdAo=",
 			error:  "can't unmarshal bearer token",
 		},
-
 		{
 			name:   "bad header, but good cookie",
 			header: "dGVzdAo=",
 			cookie: t64,
 			expect: tkn,
 		},
-
-		{name: "ok for header", header: t64, expect: tkn},
-		{name: "ok for cookie", cookie: t64, expect: tkn},
+		{
+			name:   "bad cookie, but good header",
+			header: t64,
+			cookie: "dGVzdAo=",
+			expect: tkn,
+		},
+		{
+			name:   "ok for header",
+			header: t64,
+			expect: tkn,
+		},
+		{
+			name:   "ok for cookie",
+			cookie: t64,
+			expect: tkn,
+		},
 	}
 
 	for _, tt := range cases {
 		t.Run(tt.name, func(t *testing.T) {
-			ctx := makeTestRequest(tt.cookie, tt.header)
+			var ctx *fasthttp.RequestCtx
+			if !tt.nilCtx {
+				ctx = makeTestRequest(tt.cookie, tt.header)
+			}
+
 			actual, err := fetchBearerToken(ctx)
 
 			if tt.error == "" {
@@ -136,7 +200,7 @@ func makeTestRequest(cookie, header string) *fasthttp.RequestCtx {
 	return ctx
 }
 
-func Test_checkAndPropagateBearerToken(t *testing.T) {
+func TestCheckAndPropagateBearerToken(t *testing.T) {
 	key, err := keys.NewPrivateKey()
 	require.NoError(t, err)
 	var uid user.ID
@@ -148,13 +212,96 @@ func Test_checkAndPropagateBearerToken(t *testing.T) {
 	t64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
 	require.NotEmpty(t, t64)
 
-	ctx := makeTestRequest(t64, "")
+	req := makeTestRequest(t64, "")
 
 	// Expect to see the token within the context.
-	require.NoError(t, StoreBearerToken(ctx))
+	appCtx, err := StoreBearerTokenAppCtx(context.Background(), req)
+	require.NoError(t, err)
 
 	// Expect to see the same token without errors.
-	actual, err := LoadBearerToken(ctx)
+	actual, err := LoadBearerToken(appCtx)
 	require.NoError(t, err)
 	require.Equal(t, tkn, actual)
 }
+
+func TestLoadBearerToken(t *testing.T) {
+	ctx := context.Background()
+	token := new(bearer.Token)
+
+	cases := []struct {
+		name   string
+		appCtx context.Context
+		error  string
+	}{
+		{
+			name:   "token is missing in the context",
+			appCtx: ctx,
+			error:  "found empty bearer token",
+		},
+		{
+			name:   "normal",
+			appCtx: context.WithValue(ctx, bearerTokenKey, token),
+		},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			tkn, err := LoadBearerToken(tt.appCtx)
+
+			if tt.error == "" {
+				require.NoError(t, err)
+				require.Equal(t, token, tkn)
+
+				return
+			}
+
+			require.Contains(t, err.Error(), tt.error)
+		})
+	}
+}
+
+func TestStoreBearerTokenAppCtx(t *testing.T) {
+	key, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+	var uid user.ID
+	user.IDFromKey(&uid, key.PrivateKey.PublicKey)
+
+	tkn := new(bearer.Token)
+	tkn.ForUser(uid)
+
+	t64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
+	require.NotEmpty(t, t64)
+
+	cases := []struct {
+		name  string
+		req   *fasthttp.RequestCtx
+		error string
+	}{
+		{
+			name:  "invalid token",
+			req:   makeTestRequest("dGVzdAo=", ""),
+			error: "can't unmarshal bearer token",
+		},
+		{
+			name: "normal",
+			req:  makeTestRequest(t64, ""),
+		},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			ctx, err := StoreBearerTokenAppCtx(context.Background(), tt.req)
+
+			if tt.error == "" {
+				require.NoError(t, err)
+				actualToken, ok := ctx.Value(bearerTokenKey).(*bearer.Token)
+				require.True(t, ok)
+				require.Equal(t, tkn, actualToken)
+
+				return
+			}
+
+			require.Contains(t, err.Error(), tt.error)
+		})
+	}
+}

tree/tree.go

@@ -0,0 +1,459 @@
+package tree
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+)
+
+type (
+	Tree struct {
+		service ServiceClient
+	}
+
+	// ServiceClient is a client to interact with tree service.
+	// Each method must return ErrNodeNotFound or ErrNodeAccessDenied if relevant.
+	ServiceClient interface {
+		GetNodes(ctx context.Context, p *GetNodesParams) ([]NodeResponse, error)
+		GetSubTree(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID []uint64, depth uint32, sort bool) ([]NodeResponse, error)
+	}
+
+	treeNode struct {
+		ObjID oid.ID
+		Meta  map[string]string
+	}
+
+	multiSystemNode struct {
+		// the first element is latest
+		nodes []*treeNode
+	}
+
+	GetNodesParams struct {
+		CnrID      cid.ID
+		BktInfo    *data.BucketInfo
+		TreeID     string
+		Path       []string
+		Meta       []string
+		LatestOnly bool
+		AllAttrs   bool
+	}
+)
+
+var (
+	// ErrNodeNotFound is returned from ServiceClient in case of not found error.
+	ErrNodeNotFound = layer.ErrNodeNotFound
+
+	// ErrNodeAccessDenied is returned from ServiceClient service in case of access denied error.
+	ErrNodeAccessDenied = layer.ErrNodeAccessDenied
+)
+
+const (
+	FileNameKey      = "FileName"
+	settingsFileName = "bucket-settings"
+
+	oidKV      = "OID"
+	uploadIDKV = "UploadId"
+	sizeKV     = "Size"
+
+	// keys for delete marker nodes.
+	isDeleteMarkerKV = "IsDeleteMarker"
+
+	// versionTree -- ID of a tree with object versions.
+	versionTree = "version"
+	systemTree  = "system"
+
+	separator = "/"
+)
+
+// NewTree creates instance of Tree using provided address and create grpc connection.
+func NewTree(service ServiceClient) *Tree {
+	return &Tree{service: service}
+}
+
+type Meta interface {
+	GetKey() string
+	GetValue() []byte
+}
+
+type NodeResponse interface {
+	GetMeta() []Meta
+	GetTimestamp() []uint64
+	GetNodeID() []uint64
+	GetParentID() []uint64
+}
+
+func newTreeNode(nodeInfo NodeResponse) (*treeNode, error) {
+	tNode := &treeNode{
+		Meta: make(map[string]string, len(nodeInfo.GetMeta())),
+	}
+
+	for _, kv := range nodeInfo.GetMeta() {
+		switch kv.GetKey() {
+		case oidKV:
+			if err := tNode.ObjID.DecodeString(string(kv.GetValue())); err != nil {
+				return nil, err
+			}
+		default:
+			tNode.Meta[kv.GetKey()] = string(kv.GetValue())
+		}
+	}
+
+	return tNode, nil
+}
+
+func (n *treeNode) Get(key string) (string, bool) {
+	value, ok := n.Meta[key]
+	return value, ok
+}
+
+func (n *treeNode) FileName() (string, bool) {
+	value, ok := n.Meta[FileNameKey]
+	return value, ok
+}
+
+func newNodeVersion(node NodeResponse) (*data.NodeVersion, error) {
+	tNode, err := newTreeNode(node)
+	if err != nil {
+		return nil, fmt.Errorf("invalid tree node: %w", err)
+	}
+
+	return newNodeVersionFromTreeNode(tNode), nil
+}
+
+func newNodeVersionFromTreeNode(treeNode *treeNode) *data.NodeVersion {
+	_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
+	version := &data.NodeVersion{
+		BaseNodeVersion: data.BaseNodeVersion{
+			OID:            treeNode.ObjID,
+			IsDeleteMarker: isDeleteMarker,
+		},
+	}
+
+	return version
+}
+
+func newNodeInfo(node NodeResponse) data.NodeInfo {
+	nodeMeta := node.GetMeta()
+	nodeInfo := data.NodeInfo{
+		Meta: make([]data.NodeMeta, 0, len(nodeMeta)),
+	}
+	for _, meta := range nodeMeta {
+		nodeInfo.Meta = append(nodeInfo.Meta, meta)
+	}
+
+	return nodeInfo
+}
+
+func newMultiNode(nodes []NodeResponse) (*multiSystemNode, error) {
+	var (
+		err          error
+		index        int
+		maxTimestamp uint64
+	)
+
+	if len(nodes) == 0 {
+		return nil, errors.New("multi node must have at least one node")
+	}
+
+	treeNodes := make([]*treeNode, len(nodes))
+
+	for i, node := range nodes {
+		if treeNodes[i], err = newTreeNode(node); err != nil {
+			return nil, fmt.Errorf("parse system node response: %w", err)
+		}
+
+		if timestamp := getMaxTimestamp(node); timestamp > maxTimestamp {
+			index = i
+			maxTimestamp = timestamp
+		}
+	}
+
+	treeNodes[0], treeNodes[index] = treeNodes[index], treeNodes[0]
+
+	return &multiSystemNode{
+		nodes: treeNodes,
+	}, nil
+}
+
+func (m *multiSystemNode) Latest() *treeNode {
+	return m.nodes[0]
+}
+
+func (m *multiSystemNode) Old() []*treeNode {
+	return m.nodes[1:]
+}
+
+func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error) {
+	nodes, err := c.GetVersions(ctx, cnrID, objectName)
+	if err != nil {
+		return nil, err
+	}
+
+	latestNode, err := getLatestVersionNode(nodes)
+	if err != nil {
+		return nil, err
+	}
+
+	return newNodeVersion(latestNode)
+}
+
+func (c *Tree) GetVersions(ctx context.Context, cnrID *cid.ID, objectName string) ([]NodeResponse, error) {
+	meta := []string{oidKV, isDeleteMarkerKV, sizeKV}
+	path := pathFromName(objectName)
+
+	p := &GetNodesParams{
+		CnrID:      *cnrID,
+		TreeID:     versionTree,
+		Path:       path,
+		Meta:       meta,
+		LatestOnly: false,
+		AllAttrs:   false,
+	}
+
+	return c.service.GetNodes(ctx, p)
+}
+
+func (c *Tree) CheckSettingsNodeExists(ctx context.Context, bktInfo *data.BucketInfo) error {
+	_, err := c.getSystemNode(ctx, bktInfo, settingsFileName)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *Tree) getSystemNode(ctx context.Context, bktInfo *data.BucketInfo, name string) (*multiSystemNode, error) {
+	p := &GetNodesParams{
+		CnrID:      bktInfo.CID,
+		BktInfo:    bktInfo,
+		TreeID:     systemTree,
+		Path:       []string{name},
+		LatestOnly: false,
+		AllAttrs:   true,
+	}
+	nodes, err := c.service.GetNodes(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+
+	nodes = filterMultipartNodes(nodes)
+
+	if len(nodes) == 0 {
+		return nil, layer.ErrNodeNotFound
+	}
+
+	return newMultiNode(nodes)
+}
+
+func filterMultipartNodes(nodes []NodeResponse) []NodeResponse {
+	res := make([]NodeResponse, 0, len(nodes))
+
+LOOP:
+	for _, node := range nodes {
+		for _, meta := range node.GetMeta() {
+			if meta.GetKey() == uploadIDKV {
+				continue LOOP
+			}
+		}
+
+		res = append(res, node)
+	}
+
+	return res
+}
+
+func getLatestVersionNode(nodes []NodeResponse) (NodeResponse, error) {
+	var (
+		maxCreationTime uint64
+		targetIndexNode = -1
+	)
+
+	for i, node := range nodes {
+		if !checkExistOID(node.GetMeta()) {
+			continue
+		}
+
+		if currentCreationTime := getMaxTimestamp(node); currentCreationTime > maxCreationTime {
+			targetIndexNode = i
+			maxCreationTime = currentCreationTime
+		}
+	}
+
+	if targetIndexNode == -1 {
+		return nil, layer.ErrNodeNotFound
+	}
+
+	return nodes[targetIndexNode], nil
+}
+
+func checkExistOID(meta []Meta) bool {
+	for _, kv := range meta {
+		if kv.GetKey() == "OID" {
+			return true
+		}
+	}
+
+	return false
+}
+
+// pathFromName splits name by '/'.
+func pathFromName(objectName string) []string {
+	return strings.Split(objectName, separator)
+}
+
+func (c *Tree) GetSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]data.NodeInfo, string, error) {
+	rootID, tailPrefix, err := c.determinePrefixNode(ctx, bktInfo, versionTree, prefix)
+	if err != nil {
+		return nil, "", err
+	}
+	subTree, err := c.service.GetSubTree(ctx, bktInfo, versionTree, rootID, 2, false)
+	if err != nil {
+		if errors.Is(err, ErrNodeNotFound) {
+			return nil, "", nil
+		}
+		return nil, "", err
+	}
+
+	nodesMap := make(map[string][]NodeResponse, len(subTree))
+	for _, node := range subTree {
+		if MultiID(rootID).Equal(node.GetNodeID()) {
+			continue
+		}
+
+		fileName := GetFilename(node)
+		if !strings.HasPrefix(fileName, tailPrefix) {
+			continue
+		}
+
+		nodes := nodesMap[fileName]
+
+		// Add all nodes if flag latestOnly is false.
+		// Add all intermediate nodes
+		// and only latest leaf (object) nodes. To do this store and replace last leaf (object) node in nodes[0]
+		if len(nodes) == 0 {
+			nodes = []NodeResponse{node}
+		} else if !latestOnly || isIntermediate(node) {
+			nodes = append(nodes, node)
+		} else if isIntermediate(nodes[0]) {
+			nodes = append([]NodeResponse{node}, nodes...)
+		} else if getMaxTimestamp(node) > getMaxTimestamp(nodes[0]) {
+			nodes[0] = node
+		}
+
+		nodesMap[fileName] = nodes
+	}
+
+	result := make([]data.NodeInfo, 0, len(subTree))
+	for _, nodes := range nodesMap {
+		result = append(result, nodeResponseToNodeInfo(nodes)...)
+	}
+
+	return result, strings.TrimSuffix(prefix, tailPrefix), nil
+}
+
+func nodeResponseToNodeInfo(nodes []NodeResponse) []data.NodeInfo {
+	nodesInfo := make([]data.NodeInfo, 0, len(nodes))
+	for _, node := range nodes {
+		nodesInfo = append(nodesInfo, newNodeInfo(node))
+	}
+
+	return nodesInfo
+}
+
+func (c *Tree) determinePrefixNode(ctx context.Context, bktInfo *data.BucketInfo, treeID, prefix string) ([]uint64, string, error) {
+	rootID := []uint64{0}
+	path := strings.Split(prefix, separator)
+	tailPrefix := path[len(path)-1]
+
+	if len(path) > 1 {
+		var err error
+		rootID, err = c.getPrefixNodeID(ctx, bktInfo, treeID, path[:len(path)-1])
+		if err != nil {
+			return nil, "", err
+		}
+	}
+
+	return rootID, tailPrefix, nil
+}
+
+func (c *Tree) getPrefixNodeID(ctx context.Context, bktInfo *data.BucketInfo, treeID string, prefixPath []string) ([]uint64, error) {
+	p := &GetNodesParams{
+		CnrID:      bktInfo.CID,
+		BktInfo:    bktInfo,
+		TreeID:     treeID,
+		Path:       prefixPath,
+		LatestOnly: false,
+		AllAttrs:   true,
+	}
+	nodes, err := c.service.GetNodes(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+
+	var intermediateNodes []uint64
+	for _, node := range nodes {
+		if isIntermediate(node) {
+			intermediateNodes = append(intermediateNodes, node.GetNodeID()...)
+		}
+	}
+
+	if len(intermediateNodes) == 0 {
+		return nil, layer.ErrNodeNotFound
+	}
+
+	return intermediateNodes, nil
+}
+
+func GetFilename(node NodeResponse) string {
+	for _, kv := range node.GetMeta() {
+		if kv.GetKey() == FileNameKey {
+			return string(kv.GetValue())
+		}
+	}
+
+	return ""
+}
+
+func isIntermediate(node NodeResponse) bool {
+	if len(node.GetMeta()) != 1 {
+		return false
+	}
+
+	return node.GetMeta()[0].GetKey() == FileNameKey
+}
+
+func getMaxTimestamp(node NodeResponse) uint64 {
+	var maxTimestamp uint64
+
+	for _, timestamp := range node.GetTimestamp() {
+		if timestamp > maxTimestamp {
+			maxTimestamp = timestamp
+		}
+	}
+
+	return maxTimestamp
+}
+
+type MultiID []uint64
+
+func (m MultiID) Equal(id MultiID) bool {
+	seen := make(map[uint64]struct{}, len(m))
+
+	for i := range m {
+		seen[m[i]] = struct{}{}
+	}
+
+	for i := range id {
+		if _, ok := seen[id[i]]; !ok {
+			return false
+		}
+	}
+
+	return true
+}

tree/tree_test.go

@@ -0,0 +1,150 @@
+package tree
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+type nodeMeta struct {
+	key   string
+	value []byte
+}
+
+func (m nodeMeta) GetKey() string {
+	return m.key
+}
+
+func (m nodeMeta) GetValue() []byte {
+	return m.value
+}
+
+type nodeResponse struct {
+	meta      []nodeMeta
+	timestamp []uint64
+}
+
+func (n nodeResponse) GetTimestamp() []uint64 {
+	return n.timestamp
+}
+
+func (n nodeResponse) GetMeta() []Meta {
+	res := make([]Meta, len(n.meta))
+	for i, value := range n.meta {
+		res[i] = value
+	}
+	return res
+}
+
+func (n nodeResponse) GetNodeID() []uint64 {
+	return nil
+}
+func (n nodeResponse) GetParentID() []uint64 {
+	return nil
+}
+
+func TestGetLatestNode(t *testing.T) {
+	for _, tc := range []struct {
+		name        string
+		nodes       []NodeResponse
+		exceptedOID string
+		error       bool
+	}{
+		{
+			name:  "empty",
+			nodes: []NodeResponse{},
+			error: true,
+		},
+		{
+			name: "one node of the object version",
+			nodes: []NodeResponse{
+				nodeResponse{
+					timestamp: []uint64{1},
+					meta: []nodeMeta{
+						{
+							key:   oidKV,
+							value: []byte("oid1"),
+						},
+					},
+				},
+			},
+			exceptedOID: "oid1",
+		},
+		{
+			name: "one node of the object version and one node of the secondary object",
+			nodes: []NodeResponse{
+				nodeResponse{
+					timestamp: []uint64{3},
+					meta:      []nodeMeta{},
+				},
+				nodeResponse{
+					timestamp: []uint64{1},
+					meta: []nodeMeta{
+						{
+							key:   oidKV,
+							value: []byte("oid1"),
+						},
+					},
+				},
+			},
+			exceptedOID: "oid1",
+		},
+		{
+			name: "all nodes represent a secondary object",
+			nodes: []NodeResponse{
+				nodeResponse{
+					timestamp: []uint64{3},
+					meta:      []nodeMeta{},
+				},
+				nodeResponse{
+					timestamp: []uint64{5},
+					meta:      []nodeMeta{},
+				},
+			},
+			error: true,
+		},
+		{
+			name: "several nodes of different types and with different timestamp",
+			nodes: []NodeResponse{
+				nodeResponse{
+					timestamp: []uint64{1},
+					meta: []nodeMeta{
+						{
+							key:   oidKV,
+							value: []byte("oid1"),
+						},
+					},
+				},
+				nodeResponse{
+					timestamp: []uint64{3},
+					meta:      []nodeMeta{},
+				},
+				nodeResponse{
+					timestamp: []uint64{4},
+					meta: []nodeMeta{
+						{
+							key:   oidKV,
+							value: []byte("oid2"),
+						},
+					},
+				},
+				nodeResponse{
+					timestamp: []uint64{6},
+					meta:      []nodeMeta{},
+				},
+			},
+			exceptedOID: "oid2",
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			actualNode, err := getLatestVersionNode(tc.nodes)
+			if tc.error {
+				require.Error(t, err)
+				return
+			}
+
+			require.NoError(t, err)
+			require.Equal(t, tc.exceptedOID, string(actualNode.GetMeta()[0].GetValue()))
+		})
+	}
+}

uploader/filter.go

@@ -1,145 +0,0 @@
-package uploader
-
-import (
-	"bytes"
-	"fmt"
-	"math"
-	"strconv"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-)
-
-var frostfsAttributeHeaderPrefixes = [...][]byte{[]byte("Neofs-"), []byte("NEOFS-"), []byte("neofs-")}
-
-func systemTranslator(key, prefix []byte) []byte {
-	// replace the specified prefix with `__NEOFS__`
-	key = bytes.Replace(key, prefix, []byte(utils.SystemAttributePrefix), 1)
-
-	// replace `-` with `_`
-	key = bytes.ReplaceAll(key, []byte("-"), []byte("_"))
-
-	// replace with uppercase
-	return bytes.ToUpper(key)
-}
-
-func filterHeaders(l *zap.Logger, header *fasthttp.RequestHeader) (map[string]string, error) {
-	var err error
-	result := make(map[string]string)
-	prefix := []byte(utils.UserAttributeHeaderPrefix)
-
-	header.VisitAll(func(key, val []byte) {
-		// checks that the key and the val not empty
-		if len(key) == 0 || len(val) == 0 {
-			return
-		}
-
-		// checks that the key has attribute prefix
-		if !bytes.HasPrefix(key, prefix) {
-			return
-		}
-
-		// removing attribute prefix
-		clearKey := bytes.TrimPrefix(key, prefix)
-
-		// checks that it's a system NeoFS header
-		for _, system := range frostfsAttributeHeaderPrefixes {
-			if bytes.HasPrefix(clearKey, system) {
-				clearKey = systemTranslator(clearKey, system)
-				break
-			}
-		}
-
-		// checks that the attribute key is not empty
-		if len(clearKey) == 0 {
-			return
-		}
-
-		// check if key gets duplicated
-		// return error containing full key name (with prefix)
-		if _, ok := result[string(clearKey)]; ok {
-			err = fmt.Errorf("key duplication error: %s", string(key))
-			return
-		}
-
-		// make string representation of key / val
-		k, v := string(clearKey), string(val)
-
-		result[k] = v
-
-		l.Debug("add attribute to result object",
-			zap.String("key", k),
-			zap.String("val", v))
-	})
-
-	return result, err
-}
-
-func prepareExpirationHeader(headers map[string]string, epochDurations *epochDurations, now time.Time) error {
-	expirationInEpoch := headers[object.SysAttributeExpEpoch]
-
-	if timeRFC3339, ok := headers[utils.ExpirationRFC3339Attr]; ok {
-		expTime, err := time.Parse(time.RFC3339, timeRFC3339)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", timeRFC3339, utils.ExpirationRFC3339Attr)
-		}
-
-		if expTime.Before(now) {
-			return fmt.Errorf("value %s of header %s must be in the future", timeRFC3339, utils.ExpirationRFC3339Attr)
-		}
-		updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
-		delete(headers, utils.ExpirationRFC3339Attr)
-	}
-
-	if timestamp, ok := headers[utils.ExpirationTimestampAttr]; ok {
-		value, err := strconv.ParseInt(timestamp, 10, 64)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", timestamp, utils.ExpirationTimestampAttr)
-		}
-		expTime := time.Unix(value, 0)
-
-		if expTime.Before(now) {
-			return fmt.Errorf("value %s of header %s must be in the future", timestamp, utils.ExpirationTimestampAttr)
-		}
-		updateExpirationHeader(headers, epochDurations, expTime.Sub(now))
-		delete(headers, utils.ExpirationTimestampAttr)
-	}
-
-	if duration, ok := headers[utils.ExpirationDurationAttr]; ok {
-		expDuration, err := time.ParseDuration(duration)
-		if err != nil {
-			return fmt.Errorf("couldn't parse value %s of header %s", duration, utils.ExpirationDurationAttr)
-		}
-		if expDuration <= 0 {
-			return fmt.Errorf("value %s of header %s must be positive", expDuration, utils.ExpirationDurationAttr)
-		}
-		updateExpirationHeader(headers, epochDurations, expDuration)
-		delete(headers, utils.ExpirationDurationAttr)
-	}
-
-	if expirationInEpoch != "" {
-		headers[object.SysAttributeExpEpoch] = expirationInEpoch
-	}
-
-	return nil
-}
-
-func updateExpirationHeader(headers map[string]string, durations *epochDurations, expDuration time.Duration) {
-	epochDuration := uint64(durations.msPerBlock) * durations.blockPerEpoch
-	currentEpoch := durations.currentEpoch
-	numEpoch := uint64(expDuration.Milliseconds()) / epochDuration
-
-	if uint64(expDuration.Milliseconds())%epochDuration != 0 {
-		numEpoch++
-	}
-
-	expirationEpoch := uint64(math.MaxUint64)
-	if numEpoch < math.MaxUint64-currentEpoch {
-		expirationEpoch = currentEpoch + numEpoch
-	}
-
-	headers[object.SysAttributeExpEpoch] = strconv.FormatUint(expirationEpoch, 10)
-}

uploader/filter_test.go

@@ -1,210 +0,0 @@
-package uploader
-
-import (
-	"math"
-	"strconv"
-	"testing"
-	"time"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
-	"github.com/stretchr/testify/require"
-	"github.com/valyala/fasthttp"
-	"go.uber.org/zap"
-)
-
-func TestFilter(t *testing.T) {
-	log := zap.NewNop()
-
-	t.Run("duplicate keys error", func(t *testing.T) {
-		req := &fasthttp.RequestHeader{}
-		req.DisableNormalizing()
-		req.Add("X-Attribute-DupKey", "first-value")
-		req.Add("X-Attribute-DupKey", "second-value")
-		_, err := filterHeaders(log, req)
-		require.Error(t, err)
-	})
-
-	t.Run("duplicate system keys error", func(t *testing.T) {
-		req := &fasthttp.RequestHeader{}
-		req.DisableNormalizing()
-		req.Add("X-Attribute-Neofs-DupKey", "first-value")
-		req.Add("X-Attribute-Neofs-DupKey", "second-value")
-		_, err := filterHeaders(log, req)
-		require.Error(t, err)
-	})
-
-	req := &fasthttp.RequestHeader{}
-	req.DisableNormalizing()
-
-	req.Set("X-Attribute-Neofs-Expiration-Epoch1", "101")
-	req.Set("X-Attribute-NEOFS-Expiration-Epoch2", "102")
-	req.Set("X-Attribute-neofs-Expiration-Epoch3", "103")
-	req.Set("X-Attribute-MyAttribute", "value")
-
-	expected := map[string]string{
-		"__NEOFS__EXPIRATION_EPOCH1": "101",
-		"MyAttribute":                "value",
-		"__NEOFS__EXPIRATION_EPOCH3": "103",
-		"__NEOFS__EXPIRATION_EPOCH2": "102",
-	}
-
-	result, err := filterHeaders(log, req)
-	require.NoError(t, err)
-
-	require.Equal(t, expected, result)
-}
-
-func TestPrepareExpirationHeader(t *testing.T) {
-	tomorrow := time.Now().Add(24 * time.Hour)
-	tomorrowUnix := tomorrow.Unix()
-	tomorrowUnixNano := tomorrow.UnixNano()
-	tomorrowUnixMilli := tomorrowUnixNano / 1e6
-
-	epoch := "100"
-	duration := "24h"
-	timestampSec := strconv.FormatInt(tomorrowUnix, 10)
-	timestampMilli := strconv.FormatInt(tomorrowUnixMilli, 10)
-	timestampNano := strconv.FormatInt(tomorrowUnixNano, 10)
-
-	defaultDurations := &epochDurations{
-		currentEpoch:  10,
-		msPerBlock:    1000,
-		blockPerEpoch: 101,
-	}
-
-	msPerBlock := defaultDurations.blockPerEpoch * uint64(defaultDurations.msPerBlock)
-	epochPerDay := uint64((24 * time.Hour).Milliseconds()) / msPerBlock
-	if uint64((24*time.Hour).Milliseconds())%msPerBlock != 0 {
-		epochPerDay++
-	}
-
-	defaultExpEpoch := strconv.FormatUint(defaultDurations.currentEpoch+epochPerDay, 10)
-
-	for _, tc := range []struct {
-		name      string
-		headers   map[string]string
-		durations *epochDurations
-		err       bool
-		expected  map[string]string
-	}{
-		{
-			name:     "valid epoch",
-			headers:  map[string]string{object.SysAttributeExpEpoch: epoch},
-			expected: map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid duration",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:  epoch,
-				utils.ExpirationDurationAttr: duration,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid rfc3339",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch: epoch,
-				utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339),
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp sec",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampSec,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp milli",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampMilli,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name: "valid epoch, valid timestamp nano",
-			headers: map[string]string{
-				object.SysAttributeExpEpoch:   epoch,
-				utils.ExpirationTimestampAttr: timestampNano,
-			},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: epoch},
-		},
-		{
-			name:      "valid timestamp sec",
-			headers:   map[string]string{utils.ExpirationTimestampAttr: timestampSec},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:      "valid duration",
-			headers:   map[string]string{utils.ExpirationDurationAttr: duration},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:      "valid rfc3339",
-			headers:   map[string]string{utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339)},
-			durations: defaultDurations,
-			expected:  map[string]string{object.SysAttributeExpEpoch: defaultExpEpoch},
-		},
-		{
-			name:    "valid max uint 64",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: tomorrow.Format(time.RFC3339)},
-			durations: &epochDurations{
-				currentEpoch:  math.MaxUint64 - 1,
-				msPerBlock:    defaultDurations.msPerBlock,
-				blockPerEpoch: defaultDurations.blockPerEpoch,
-			},
-			expected: map[string]string{object.SysAttributeExpEpoch: strconv.FormatUint(uint64(math.MaxUint64), 10)},
-		},
-		{
-			name:    "invalid timestamp sec",
-			headers: map[string]string{utils.ExpirationTimestampAttr: "abc"},
-			err:     true,
-		},
-		{
-			name:    "invalid timestamp sec zero",
-			headers: map[string]string{utils.ExpirationTimestampAttr: "0"},
-			err:     true,
-		},
-		{
-			name:    "invalid duration",
-			headers: map[string]string{utils.ExpirationDurationAttr: "1d"},
-			err:     true,
-		},
-		{
-			name:    "invalid duration negative",
-			headers: map[string]string{utils.ExpirationDurationAttr: "-5h"},
-			err:     true,
-		},
-		{
-			name:    "invalid rfc3339",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: "abc"},
-			err:     true,
-		},
-		{
-			name:    "invalid rfc3339 zero",
-			headers: map[string]string{utils.ExpirationRFC3339Attr: time.RFC3339},
-			err:     true,
-		},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			err := prepareExpirationHeader(tc.headers, tc.durations, time.Now())
-			if tc.err {
-				require.Error(t, err)
-			} else {
-				require.NoError(t, err)
-				require.Equal(t, tc.expected, tc.headers)
-			}
-		})
-	}
-}

uploader/multipart.go

@@ -1,45 +0,0 @@
-package uploader
-
-import (
-	"io"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/uploader/multipart"
-	"go.uber.org/zap"
-)
-
-// MultipartFile provides standard ReadCloser interface and also allows one to
-// get file name, it's used for multipart uploads.
-type MultipartFile interface {
-	io.ReadCloser
-	FileName() string
-}
-
-func fetchMultipartFile(l *zap.Logger, r io.Reader, boundary string) (MultipartFile, error) {
-	// To have a custom buffer (3mb) the custom multipart reader is used.
-	// https://github.com/nspcc-dev/neofs-http-gw/issues/148
-	reader := multipart.NewReader(r, boundary)
-
-	for {
-		part, err := reader.NextPart()
-		if err != nil {
-			return nil, err
-		}
-
-		name := part.FormName()
-		if name == "" {
-			l.Debug("ignore part, empty form name")
-			continue
-		}
-
-		filename := part.FileName()
-
-		// ignore multipart/form-data values
-		if filename == "" {
-			l.Debug("ignore part, empty filename", zap.String("form", name))
-
-			continue
-		}
-
-		return part, nil
-	}
-}