[#181] index_page: Ignore deleted objects in versioned buckets

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

.docker/Dockerfile

@@ -1,9 +1,9 @@
-FROM golang:1.21-alpine as basebuilder
+FROM golang:1.22-alpine AS basebuilder
 RUN apk add --update make bash ca-certificates
 
-FROM basebuilder as builder
+FROM basebuilder AS builder
-ENV GOGC off
+ENV GOGC=off
-ENV CGO_ENABLED 0
+ENV CGO_ENABLED=0
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.forgejo/workflows/builds.yml

@@ -1,4 +1,8 @@
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches:
+      - master
 
 jobs:
   builds:
@@ -6,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.20', '1.21' ]
+        go_versions: [ '1.22', '1.23' ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3
@@ -18,3 +22,6 @@ jobs:
 
       - 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

@@ -12,9 +12,9 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.23'
 
       - name: Run commit format checker
-        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v1
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
         with:
-          from: adb95642d
+          from: 'origin/${{ github.event.pull_request.base.ref }}'

.forgejo/workflows/tests.yml

@@ -1,4 +1,8 @@
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches:
+      - master
 
 jobs:
   lint:
@@ -10,7 +14,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.23'
           cache: true
 
       - name: Install linters
@@ -24,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.20', '1.21' ]
+        go_versions: [ '1.22', '1.23' ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3

.forgejo/workflows/vulncheck.yml

@@ -1,4 +1,8 @@
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches:
+      - master
 
 jobs:
   vulncheck:
@@ -12,7 +16,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.22'
 
       - name: Install govulncheck
         run: go install golang.org/x/vuln/cmd/govulncheck@latest

.github/CODEOWNERS

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

.golangci.yml

@@ -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:

.pre-commit-config.yaml

@@ -30,11 +30,6 @@ repos:
     hooks:
       - id: shellcheck
 
-  - repo: https://github.com/golangci/golangci-lint
-    rev: v1.51.2
-    hooks:
-      - id: golangci-lint
-
   - repo: local
     hooks:
       - id: make-lint-install

CHANGELOG.md

@@ -4,20 +4,121 @@ This document outlines major changes between releases.
 
 ## [Unreleased]
 
+## [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
+- Duplicated NNS Resolver code (#129)
+
+## [0.30.3] - 2024-10-18
+
+### Fixed
+- Get response on S3 multipart object (#142)
+
+### Added
+- Support percent-encoding for GET queries (#134)
+
+### Changed
+- Split `FrostFS` interface into separate read methods (#127)
+
+## [0.30.2] - 2024-09-03
+
+### Added
+- Fuzzing tests (#135)
+
+## [0.30.1] - 2024-08-20
+
+### Fixed
+- Error counting in pool component before connection switch (#131)
+
+### Added
+- Log of endpoint address during tree pool errors (#131)
+
+## [0.30.0] - Kangshung - 2024-07-22
+
+### Fixed
+- Handle query unescape and invalid bearer token errors (#107)
+- Fix HTTP/2 requests (#110)
+
+### Added
+- Add new `reconnect_interval` config param (#100)
+- Erasure coding support in placement policy (#114)
+- HTTP Header canonicalizer for well-known headers (#121)
+
+### Changed
+- Improve test coverage (#112, #117)
+- Bumped vulnerable dependencies (#115)
+- Replace extended ACL examples with policies in README (#118)
+
+### Removed
+
+## [0.29.0] - Zemu - 2024-05-27
+
+### Fixed
+- 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 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
+- Replace atomics with mutex for reloadable params (#74)
+
+## [0.28.1] - 2024-01-24
+
+### Added
+- 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
 - 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)
@@ -61,4 +162,12 @@ This project is a fork of [NeoFS HTTP Gateway](https://github.com/nspcc-dev/neof
 To see CHANGELOG for older versions, refer to https://github.com/nspcc-dev/neofs-http-gw/blob/master/CHANGELOG.md.
 
 [0.27.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/72734ab4...v0.27.0
-[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.27.0...master
+[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
+[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.31.0...master

CODEOWNERS

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

Makefile

@@ -2,9 +2,9 @@
 
 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 ?= 1.20
+GO_VERSION ?= 1.22
-LINT_VERSION ?= 1.54.0
+LINT_VERSION ?= 1.60.3
-TRUECLOUDLAB_LINT_VERSION ?= 0.0.2
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.6
 BUILD ?= $(shell date -u --iso=seconds)
 
 HUB_IMAGE ?= truecloudlab/frostfs-http-gw
@@ -30,6 +30,11 @@ PKG_VERSION ?= $(shell echo $(VERSION) | sed "s/^v//" | \
 			sed "s/-/~/")-${OS_RELEASE}
 .PHONY: debpackage debclean
 
+FUZZ_NGFUZZ_DIR ?= ""
+FUZZ_TIMEOUT ?= 30
+FUZZ_FUNCTIONS ?= "all"
+FUZZ_AUX ?= ""
+
 # Make all binaries
 all: $(BINS)
 $(BINS):  $(DIRS) dep
@@ -78,6 +83,35 @@ 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"

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>.
@@ -217,41 +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
 
@@ -462,126 +429,7 @@ object ID, like this:
 
 #### Authentication
 
-You can always upload files to public containers (open for anyone to put
+Read more about request authentication in [docs/authentication.md](./docs/authemtnication.md)
-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 have wallet (which will be used to sign the token) 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:
-* **NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3** (token owner (gateway address))
-
-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 token owner id:
-```
-$ echo 'NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3' | base58 --decode | base64
-# output: NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg==
-```
-
-2. Form a Bearer token (10000 is lifetime expiration in epoch) and save it to **bearer.json**:
-```
-{
-    "body": {
-        "allowImpersonate": true,
-        "ownerID": {
-            "value": "NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg=="
-        },
-        "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.json
-```
-
-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
-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": []
-                }
-            ]
-        }
-    ]
-}
-```
 
 ### Metrics and Pprof
 
@@ -592,3 +440,26 @@ 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 @@
-v0.27.0
+v0.31.0

cmd/http-gw/app.go

@@ -1,19 +1,28 @@
 package main
 
 import (
+	"bytes"
 	"context"
+	"crypto/x509"
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
 	"os/signal"
 	"runtime/debug"
+	"strconv"
+	"strings"
 	"sync"
 	"syscall"
 	"time"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/frostfs/services"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
 	"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/internal/service/frostfs"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/templates"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/metrics"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
@@ -21,6 +30,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	v2container "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
@@ -30,9 +40,12 @@ import (
 	"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/panjf2000/ants/v2"
 	"github.com/spf13/viper"
 	"github.com/valyala/fasthttp"
+	"go.opentelemetry.io/otel/trace"
 	"go.uber.org/zap"
+	"golang.org/x/exp/slices"
 )
 
 type (
@@ -50,8 +63,17 @@ type (
 		resolver       *resolver.ContainerResolver
 		metrics        *gateMetrics
 		services       []*metrics.Service
-		settings  *handler.Settings
+		settings       *appSettings
+		loggerSettings *loggerSettings
+
 		servers       []Server
+		unbindServers []ServerInfo
+		mu            sync.RWMutex
+	}
+
+	loggerSettings struct {
+		mu         sync.RWMutex
+		appMetrics *metrics.GateMetrics
 	}
 
 	// App is an interface for the main gateway function.
@@ -60,49 +82,61 @@ type (
 		Serve()
 	}
 
-	// Option is an application option.
-	Option func(a *app)
-
 	gateMetrics struct {
 		logger   *zap.Logger
 		provider *metrics.GateMetrics
 		mu       sync.RWMutex
 		enabled  bool
 	}
+
+	// appSettings stores reloading parameters, so it has to provide getters and setters which use RWMutex.
+	appSettings struct {
+		reconnectInterval time.Duration
+		dialerSource      *internalnet.DialerSource
+		workerPoolSize    int
+
+		mu                     sync.RWMutex
+		defaultTimestamp       bool
+		zipCompression         bool
+		clientCut              bool
+		returnIndexPage        bool
+		indexPageTemplate      string
+		bufferMaxSizeForPut    uint64
+		namespaceHeader        string
+		defaultNamespaces      []string
+		corsAllowOrigin        string
+		corsAllowMethods       []string
+		corsAllowHeaders       []string
+		corsExposeHeaders      []string
+		corsAllowCredentials   bool
+		corsMaxAge             int
+		enableFilepathFallback bool
+	}
+
+	CORS struct {
+		AllowOrigin      string
+		AllowMethods     []string
+		AllowHeaders     []string
+		ExposeHeaders    []string
+		AllowCredentials bool
+		MaxAge           int
+	}
 )
 
-// WithLogger returns Option to set a specific logger.
+func newApp(ctx context.Context, v *viper.Viper) App {
-func WithLogger(l *zap.Logger, lvl zap.AtomicLevel) Option {
+	logSettings := &loggerSettings{}
-	return func(a *app) {
+	log := pickLogger(v, logSettings)
-		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 {
 	a := &app{
 		ctx:            ctx,
-		log:       zap.L(),
+		log:            log.logger,
-		cfg:       viper.GetViper(),
+		cfg:            v,
+		loggerSettings: logSettings,
 		webServer:      new(fasthttp.Server),
 		webDone:        make(chan struct{}),
 	}
-	for i := range opt {
+
-		opt[i](a)
+	a.initAppSettings()
-	}
 
 	// -- setup FastHTTP server --
 	a.webServer.Name = "frost-http-gw"
@@ -117,7 +151,7 @@ func newApp(ctx context.Context, opt ...Option) App {
 	a.webServer.DisablePreParseMultipartForm = true
 	a.webServer.StreamRequestBody = a.cfg.GetBool(cfgWebStreamRequestBody)
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- --
-	a.pool, a.treePool, a.key = getPools(ctx, a.log, a.cfg)
+	a.pool, a.treePool, a.key = getPools(ctx, a.log, a.cfg, a.settings.dialerSource)
 
 	var owner user.ID
 	user.IDFromKey(&owner, a.key.PrivateKey.PublicKey)
@@ -125,7 +159,6 @@ func newApp(ctx context.Context, opt ...Option) App {
 
 	a.setRuntimeParameters()
 
-	a.initAppSettings()
 	a.initResolver()
 	a.initMetrics()
 	a.initTracing(ctx)
@@ -134,9 +167,151 @@ func newApp(ctx context.Context, opt ...Option) App {
 }
 
 func (a *app) initAppSettings() {
-	a.settings = &handler.Settings{}
+	a.settings = &appSettings{
+		reconnectInterval: fetchReconnectInterval(a.cfg),
+		dialerSource:      getDialerSource(a.log, a.cfg),
+		workerPoolSize:    a.cfg.GetInt(cfgWorkerPoolSize),
+	}
+	a.settings.update(a.cfg, a.log)
+}
 
-	a.updateSettings()
+func (s *appSettings) update(v *viper.Viper, l *zap.Logger) {
+	defaultTimestamp := v.GetBool(cfgUploaderHeaderEnableDefaultTimestamp)
+	zipCompression := v.GetBool(cfgZipCompression)
+	returnIndexPage := v.GetBool(cfgIndexPageEnabled)
+	clientCut := v.GetBool(cfgClientCut)
+	bufferMaxSizeForPut := v.GetUint64(cfgBufferMaxSizeForPut)
+	namespaceHeader := v.GetString(cfgResolveNamespaceHeader)
+	defaultNamespaces := fetchDefaultNamespaces(v)
+	indexPage, indexEnabled := fetchIndexPageTemplate(v, l)
+	corsAllowOrigin := v.GetString(cfgCORSAllowOrigin)
+	corsAllowMethods := v.GetStringSlice(cfgCORSAllowMethods)
+	corsAllowHeaders := v.GetStringSlice(cfgCORSAllowHeaders)
+	corsExposeHeaders := v.GetStringSlice(cfgCORSExposeHeaders)
+	corsAllowCredentials := v.GetBool(cfgCORSAllowCredentials)
+	corsMaxAge := fetchCORSMaxAge(v)
+	enableFilepathFallback := v.GetBool(cfgFeaturesEnableFilepathFallback)
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.defaultTimestamp = defaultTimestamp
+	s.zipCompression = zipCompression
+	s.returnIndexPage = returnIndexPage
+	s.clientCut = clientCut
+	s.bufferMaxSizeForPut = bufferMaxSizeForPut
+	s.namespaceHeader = namespaceHeader
+	s.defaultNamespaces = defaultNamespaces
+	s.returnIndexPage = indexEnabled
+	s.indexPageTemplate = indexPage
+	s.corsAllowOrigin = corsAllowOrigin
+	s.corsAllowMethods = corsAllowMethods
+	s.corsAllowHeaders = corsAllowHeaders
+	s.corsExposeHeaders = corsExposeHeaders
+	s.corsAllowCredentials = corsAllowCredentials
+	s.corsMaxAge = corsMaxAge
+	s.enableFilepathFallback = enableFilepathFallback
+}
+
+func (s *loggerSettings) DroppedLogsInc() {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	if s.appMetrics != nil {
+		s.appMetrics.DroppedLogsInc()
+	}
+}
+
+func (s *loggerSettings) setMetrics(appMetrics *metrics.GateMetrics) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.appMetrics = appMetrics
+}
+
+func (s *appSettings) DefaultTimestamp() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.defaultTimestamp
+}
+
+func (s *appSettings) ZipCompression() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.zipCompression
+}
+
+func (s *appSettings) IndexPageEnabled() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.returnIndexPage
+}
+
+func (s *appSettings) IndexPageTemplate() string {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	if s.indexPageTemplate == "" {
+		return templates.DefaultIndexTemplate
+	}
+	return s.indexPageTemplate
+}
+
+func (s *appSettings) CORS() CORS {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	allowMethods := make([]string, len(s.corsAllowMethods))
+	copy(allowMethods, s.corsAllowMethods)
+
+	allowHeaders := make([]string, len(s.corsAllowHeaders))
+	copy(allowHeaders, s.corsAllowHeaders)
+
+	exposeHeaders := make([]string, len(s.corsExposeHeaders))
+	copy(exposeHeaders, s.corsExposeHeaders)
+
+	return CORS{
+		AllowOrigin:      s.corsAllowOrigin,
+		AllowMethods:     allowMethods,
+		AllowHeaders:     allowHeaders,
+		ExposeHeaders:    exposeHeaders,
+		AllowCredentials: s.corsAllowCredentials,
+		MaxAge:           s.corsMaxAge,
+	}
+}
+
+func (s *appSettings) ClientCut() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.clientCut
+}
+
+func (s *appSettings) BufferMaxSizeForPut() uint64 {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.bufferMaxSizeForPut
+}
+
+func (s *appSettings) NamespaceHeader() string {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.namespaceHeader
+}
+
+func (s *appSettings) FormContainerZone(ns string) (zone string, isDefault bool) {
+	s.mu.RLock()
+	namespaces := s.defaultNamespaces
+	s.mu.RUnlock()
+	if slices.Contains(namespaces, ns) {
+		return v2container.SysAttributeZoneDefault, true
+	}
+
+	return ns + ".ns", false
+}
+
+func (s *appSettings) EnableFilepathFallback() bool {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.enableFilepathFallback
 }
 
 func (a *app) initResolver() {
@@ -149,8 +324,9 @@ func (a *app) initResolver() {
 
 func (a *app) getResolverConfig() ([]string, *resolver.Config) {
 	resolveCfg := &resolver.Config{
-		FrostFS:    resolver.NewFrostFSResolver(a.pool),
+		FrostFS:    frostfs.NewResolverFrostFS(a.pool),
 		RPCAddress: a.cfg.GetString(cfgRPCEndpoint),
+		Settings:   a.settings,
 	}
 
 	order := a.cfg.GetStringSlice(cfgResolveOrder)
@@ -170,6 +346,7 @@ func (a *app) initMetrics() {
 	gateMetricsProvider := metrics.NewGateMetrics(a.pool)
 	a.metrics = newGateMetrics(a.log, gateMetricsProvider, a.cfg.GetBool(cfgPrometheusEnabled))
 	a.metrics.SetHealth(metrics.HealthStatusStarting)
+	a.loggerSettings.setMetrics(a.metrics.provider)
 }
 
 func newGateMetrics(logger *zap.Logger, provider *metrics.GateMetrics, enabled bool) *gateMetrics {
@@ -325,24 +502,36 @@ func (a *app) setHealthStatus() {
 }
 
 func (a *app) Serve() {
-	handler := handler.New(a.AppParams(), a.settings, tree.NewTree(services.NewPoolWrapper(a.treePool)))
+	workerPool := a.initWorkerPool()
+	defer func() {
+		workerPool.Release()
+		close(a.webDone)
+	}()
+
+	handle := handler.New(a.AppParams(), a.settings, tree.NewTree(frostfs.NewPoolWrapper(a.treePool)), workerPool)
 
 	// Configure router.
-	a.configureRouter(handler)
+	a.configureRouter(handle)
 
 	a.startServices()
 	a.initServers(a.ctx)
 
-	for i := range a.servers {
+	servs := a.getServers()
+
+	for i := range servs {
 		go func(i int) {
-			a.log.Info(logs.StartingServer, zap.String("address", a.servers[i].Address()))
+			a.log.Info(logs.StartingServer, zap.String("address", servs[i].Address()))
-			if err := a.webServer.Serve(a.servers[i].Listener()); err != nil && err != http.ErrServerClosed {
+			if err := a.webServer.Serve(servs[i].Listener()); err != nil && err != http.ErrServerClosed {
-				a.metrics.MarkUnhealthy(a.servers[i].Address())
+				a.metrics.MarkUnhealthy(servs[i].Address())
 				a.log.Fatal(logs.ListenAndServe, zap.Error(err))
 			}
 		}(i)
 	}
 
+	if len(a.unbindServers) != 0 {
+		a.scheduleReconnect(a.ctx, a.webServer)
+	}
+
 	sigs := make(chan os.Signal, 1)
 	signal.Notify(sigs, syscall.SIGHUP)
 
@@ -361,8 +550,14 @@ LOOP:
 	a.metrics.Shutdown()
 	a.stopServices()
 	a.shutdownTracing()
+}
 
-	close(a.webDone)
+func (a *app) initWorkerPool() *ants.Pool {
+	workerPool, err := ants.NewPool(a.settings.workerPoolSize)
+	if err != nil {
+		a.log.Fatal(logs.FailedToCreateWorkerPool, zap.Error(err))
+	}
+	return workerPool
 }
 
 func (a *app) shutdownTracing() {
@@ -392,6 +587,10 @@ func (a *app) configReload(ctx context.Context) {
 		a.logLevel.SetLevel(lvl)
 	}
 
+	if err := a.settings.dialerSource.Update(fetchMultinetConfig(a.cfg, a.log)); err != nil {
+		a.log.Warn(logs.MultinetConfigWontBeUpdated, zap.Error(err))
+	}
+
 	if err := a.resolver.UpdateResolvers(a.getResolverConfig()); err != nil {
 		a.log.Warn(logs.FailedToUpdateResolvers, zap.Error(err))
 	}
@@ -405,7 +604,7 @@ func (a *app) configReload(ctx context.Context) {
 	a.stopServices()
 	a.startServices()
 
-	a.updateSettings()
+	a.settings.update(a.cfg, a.log)
 
 	a.metrics.SetEnabled(a.cfg.GetBool(cfgPrometheusEnabled))
 	a.initTracing(ctx)
@@ -414,11 +613,6 @@ func (a *app) configReload(ctx context.Context) {
 	a.log.Info(logs.SIGHUPConfigReloadCompleted)
 }
 
-func (a *app) updateSettings() {
-	a.settings.SetDefaultTimestamp(a.cfg.GetBool(cfgUploaderHeaderEnableDefaultTimestamp))
-	a.settings.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)
@@ -450,37 +644,162 @@ func (a *app) configureRouter(handler *handler.Handler) {
 		response.Error(r, "Method Not Allowed", fasthttp.StatusMethodNotAllowed)
 	}
 
-	r.POST("/upload/{cid}", a.logger(a.tokenizer(a.tracer(handler.Upload))))
+	r.POST("/upload/{cid}", a.addMiddlewares(handler.Upload))
+	r.OPTIONS("/upload/{cid}", a.addPreflight())
 	a.log.Info(logs.AddedPathUploadCid)
-	r.GET("/get/{cid}/{oid:*}", a.logger(a.tokenizer(a.tracer(handler.DownloadByAddressOrBucketName))))
+	r.GET("/get/{cid}/{oid:*}", a.addMiddlewares(handler.DownloadByAddressOrBucketName))
-	r.HEAD("/get/{cid}/{oid:*}", a.logger(a.tokenizer(a.tracer(handler.HeadByAddressOrBucketName))))
+	r.HEAD("/get/{cid}/{oid:*}", a.addMiddlewares(handler.HeadByAddressOrBucketName))
+	r.OPTIONS("/get/{cid}/{oid:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathGetCidOid)
-	r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(a.tokenizer(a.tracer(handler.DownloadByAttribute))))
+	r.GET("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(handler.DownloadByAttribute))
-	r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(a.tokenizer(a.tracer(handler.HeadByAttribute))))
+	r.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addMiddlewares(handler.HeadByAttribute))
+	r.OPTIONS("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathGetByAttributeCidAttrKeyAttrVal)
-	r.GET("/zip/{cid}/{prefix:*}", a.logger(a.tokenizer(a.tracer(handler.DownloadZipped))))
+	r.GET("/zip/{cid}/{prefix:*}", a.addMiddlewares(handler.DownloadZipped))
+	r.OPTIONS("/zip/{cid}/{prefix:*}", a.addPreflight())
 	a.log.Info(logs.AddedPathZipCidPrefix)
 
 	a.webServer.Handler = r.Handler
 }
 
+func (a *app) addMiddlewares(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	list := []func(fasthttp.RequestHandler) fasthttp.RequestHandler{
+		a.tracer,
+		a.logger,
+		a.canonicalizer,
+		a.tokenizer,
+		a.reqNamespace,
+		a.cors,
+	}
+
+	for i := len(list) - 1; i >= 0; i-- {
+		h = list[i](h)
+	}
+
+	return h
+}
+
+func (a *app) addPreflight() fasthttp.RequestHandler {
+	list := []func(fasthttp.RequestHandler) fasthttp.RequestHandler{
+		a.tracer,
+		a.logger,
+		a.reqNamespace,
+	}
+
+	h := a.preflightHandler
+	for i := len(list) - 1; i >= 0; i-- {
+		h = list[i](h)
+	}
+
+	return h
+}
+
+func (a *app) preflightHandler(c *fasthttp.RequestCtx) {
+	cors := a.settings.CORS()
+	setCORSHeaders(c, cors)
+}
+
+func (a *app) cors(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	return func(c *fasthttp.RequestCtx) {
+		h(c)
+		code := c.Response.StatusCode()
+		if code >= fasthttp.StatusOK && code < fasthttp.StatusMultipleChoices {
+			cors := a.settings.CORS()
+			setCORSHeaders(c, cors)
+		}
+	}
+}
+
+func setCORSHeaders(c *fasthttp.RequestCtx, cors CORS) {
+	c.Response.Header.Set(fasthttp.HeaderAccessControlMaxAge, strconv.Itoa(cors.MaxAge))
+
+	if len(cors.AllowOrigin) != 0 {
+		c.Response.Header.Set(fasthttp.HeaderAccessControlAllowOrigin, cors.AllowOrigin)
+	}
+
+	if len(cors.AllowMethods) != 0 {
+		c.Response.Header.Set(fasthttp.HeaderAccessControlAllowMethods, strings.Join(cors.AllowMethods, ","))
+	}
+
+	if len(cors.AllowHeaders) != 0 {
+		c.Response.Header.Set(fasthttp.HeaderAccessControlAllowHeaders, strings.Join(cors.AllowHeaders, ","))
+	}
+
+	if len(cors.ExposeHeaders) != 0 {
+		c.Response.Header.Set(fasthttp.HeaderAccessControlExposeHeaders, strings.Join(cors.ExposeHeaders, ","))
+	}
+
+	if cors.AllowCredentials {
+		c.Response.Header.Set(fasthttp.HeaderAccessControlAllowCredentials, "true")
+	}
+}
+
 func (a *app) logger(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 	return func(req *fasthttp.RequestCtx) {
-		a.log.Info(logs.Request, zap.String("remote", req.RemoteAddr().String()),
+		requiredFields := []zap.Field{zap.Uint64("id", req.ID())}
+		reqCtx := utils.GetContextFromRequest(req)
+		if traceID := trace.SpanFromContext(reqCtx).SpanContext().TraceID(); traceID.IsValid() {
+			requiredFields = append(requiredFields, zap.String("trace_id", traceID.String()))
+		}
+		log := a.log.With(requiredFields...)
+
+		reqCtx = utils.SetReqLog(reqCtx, log)
+		utils.SetContextToRequest(reqCtx, req)
+
+		fields := []zap.Field{
+			zap.String("remote", req.RemoteAddr().String()),
 			zap.ByteString("method", req.Method()),
 			zap.ByteString("path", req.Path()),
 			zap.ByteString("query", req.QueryArgs().QueryString()),
-			zap.Uint64("id", req.ID()))
+		}
+
+		log.Info(logs.Request, fields...)
+		h(req)
+	}
+}
+
+func (a *app) canonicalizer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	return func(req *fasthttp.RequestCtx) {
+		// regardless of DisableHeaderNamesNormalizing setting, some headers
+		// MUST be normalized in order to process execution. They are normalized
+		// here.
+
+		toAddKeys := make([][]byte, 0, 10)
+		toAddValues := make([][]byte, 0, 10)
+		prefix := []byte(utils.UserAttributeHeaderPrefix)
+
+		req.Request.Header.VisitAll(func(k, v []byte) {
+			if bytes.HasPrefix(k, prefix) {
+				return
+			}
+			toAddKeys = append(toAddKeys, k)
+			toAddValues = append(toAddValues, v)
+		})
+
+		// this is safe to do after all headers were read into header structure
+		req.Request.Header.EnableNormalizing()
+
+		for i := range toAddKeys {
+			req.Request.Header.SetBytesKV(toAddKeys[i], toAddValues[i])
+		}
+
+		// return normalization setting back
+		req.Request.Header.DisableNormalizing()
+
 		h(req)
 	}
 }
 
 func (a *app) tokenizer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 	return func(req *fasthttp.RequestCtx) {
-		appCtx, err := tokens.StoreBearerTokenAppCtx(a.ctx, req)
+		reqCtx := utils.GetContextFromRequest(req)
+		appCtx, err := tokens.StoreBearerTokenAppCtx(reqCtx, req)
 		if err != nil {
-			a.log.Error(logs.CouldNotFetchAndStoreBearerToken, zap.Error(err))
+			log := utils.GetReqLogOrDefault(reqCtx, a.log)
+
+			log.Error(logs.CouldNotFetchAndStoreBearerToken, zap.Error(err))
 			response.Error(req, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
+			return
 		}
 		utils.SetContextToRequest(appCtx, req)
 		h(req)
@@ -489,30 +808,43 @@ func (a *app) tokenizer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 
 func (a *app) tracer(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 	return func(req *fasthttp.RequestCtx) {
-		appCtx := utils.GetContextFromRequest(req)
+		appCtx, span := utils.StartHTTPServerSpan(a.ctx, req, "REQUEST")
-
-		appCtx, span := utils.StartHTTPServerSpan(appCtx, req, "REQUEST")
 		defer func() {
 			utils.SetHTTPTraceInfo(appCtx, span, req)
 			span.End()
 		}()
 
+		appCtx = treepool.SetRequestID(appCtx, strconv.FormatUint(req.ID(), 10))
+
 		utils.SetContextToRequest(appCtx, req)
 		h(req)
 	}
 }
 
-func (a *app) AppParams() *utils.AppParams {
+func (a *app) reqNamespace(h fasthttp.RequestHandler) fasthttp.RequestHandler {
-	return &utils.AppParams{
+	return func(req *fasthttp.RequestCtx) {
+		appCtx := utils.GetContextFromRequest(req)
+
+		nsBytes := req.Request.Header.Peek(a.settings.NamespaceHeader())
+		appCtx = middleware.SetNamespace(appCtx, string(nsBytes))
+
+		utils.SetContextToRequest(appCtx, req)
+		h(req)
+	}
+}
+
+func (a *app) AppParams() *handler.AppParams {
+	return &handler.AppParams{
 		Logger:   a.log,
-		Pool:     a.pool,
+		FrostFS:  frostfs.NewFrostFS(a.pool),
 		Owner:    a.owner,
 		Resolver: a.resolver,
+		Cache:    cache.NewBucketCache(getCacheOptions(a.cfg, a.log)),
 	}
 }
 
 func (a *app) initServers(ctx context.Context) {
-	serversInfo := fetchServers(a.cfg)
+	serversInfo := fetchServers(a.cfg, a.log)
 
 	a.servers = make([]Server, 0, len(serversInfo))
 	for _, serverInfo := range serversInfo {
@@ -522,6 +854,7 @@ func (a *app) initServers(ctx context.Context) {
 		}
 		srv, err := newServer(ctx, serverInfo)
 		if err != nil {
+			a.unbindServers = append(a.unbindServers, serverInfo)
 			a.metrics.MarkUnhealthy(serverInfo.Address)
 			a.log.Warn(logs.FailedToAddServer, append(fields, zap.Error(err))...)
 			continue
@@ -538,22 +871,25 @@ func (a *app) initServers(ctx context.Context) {
 }
 
 func (a *app) updateServers() error {
-	serversInfo := fetchServers(a.cfg)
+	serversInfo := fetchServers(a.cfg, a.log)
+
+	a.mu.Lock()
+	defer a.mu.Unlock()
 
 	var found bool
 	for _, serverInfo := range serversInfo {
-		index := a.serverIndex(serverInfo.Address)
+		ser := a.getServer(serverInfo.Address)
-		if index == -1 {
+		if ser != nil {
-			continue
-		}
-
 			if serverInfo.TLS.Enabled {
-			if err := a.servers[index].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
+				if err := ser.UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
 					return fmt.Errorf("failed to update tls certs: %w", err)
 				}
-		}
 				found = true
 			}
+		} else if unbind := a.updateUnbindServerInfo(serverInfo); unbind {
+			found = true
+		}
+	}
 
 	if !found {
 		return fmt.Errorf("invalid servers configuration: no known server found")
@@ -562,13 +898,29 @@ func (a *app) updateServers() error {
 	return nil
 }
 
-func (a *app) serverIndex(address string) int {
+func (a *app) getServers() []Server {
+	a.mu.RLock()
+	defer a.mu.RUnlock()
+	return a.servers
+}
+
+func (a *app) getServer(address string) Server {
 	for i := range a.servers {
 		if a.servers[i].Address() == address {
-			return i
+			return a.servers[i]
 		}
 	}
-	return -1
+	return nil
+}
+
+func (a *app) updateUnbindServerInfo(info ServerInfo) bool {
+	for i := range a.unbindServers {
+		if a.unbindServers[i].Address == info.Address {
+			a.unbindServers[i] = info
+			return true
+		}
+	}
+	return false
 }
 
 func (a *app) initTracing(ctx context.Context) {
@@ -584,6 +936,29 @@ func (a *app) initTracing(ctx context.Context) {
 		InstanceID: instanceID,
 		Version:    Version,
 	}
+
+	if trustedCa := a.cfg.GetString(cfgTracingTrustedCa); trustedCa != "" {
+		caBytes, err := os.ReadFile(trustedCa)
+		if err != nil {
+			a.log.Warn(logs.FailedToInitializeTracing, zap.Error(err))
+			return
+		}
+		certPool := x509.NewCertPool()
+		ok := certPool.AppendCertsFromPEM(caBytes)
+		if !ok {
+			a.log.Warn(logs.FailedToInitializeTracing, zap.String("error", "can't fill cert pool by ca cert"))
+			return
+		}
+		cfg.ServerCaCertPool = certPool
+	}
+
+	attributes, err := fetchTracingAttributes(a.cfg)
+	if err != nil {
+		a.log.Warn(logs.FailedToInitializeTracing, zap.Error(err))
+		return
+	}
+	cfg.Attributes = attributes
+
 	updated, err := tracing.Setup(ctx, cfg)
 	if err != nil {
 		a.log.Warn(logs.FailedToInitializeTracing, zap.Error(err))
@@ -608,3 +983,60 @@ func (a *app) setRuntimeParameters() {
 			zap.Int64("old_value", previous))
 	}
 }
+
+func (a *app) scheduleReconnect(ctx context.Context, srv *fasthttp.Server) {
+	go func() {
+		t := time.NewTicker(a.settings.reconnectInterval)
+		defer t.Stop()
+		for {
+			select {
+			case <-t.C:
+				if a.tryReconnect(ctx, srv) {
+					return
+				}
+				t.Reset(a.settings.reconnectInterval)
+			case <-ctx.Done():
+				return
+			}
+		}
+	}()
+}
+
+func (a *app) tryReconnect(ctx context.Context, sr *fasthttp.Server) bool {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+
+	a.log.Info(logs.ServerReconnecting)
+	var failedServers []ServerInfo
+
+	for _, serverInfo := range a.unbindServers {
+		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(logs.ServerReconnectFailed, zap.Error(err))
+			failedServers = append(failedServers, serverInfo)
+			a.metrics.MarkUnhealthy(serverInfo.Address)
+			continue
+		}
+
+		go func() {
+			a.log.Info(logs.StartingServer, zap.String("address", srv.Address()))
+			a.metrics.MarkHealthy(serverInfo.Address)
+			if err = sr.Serve(srv.Listener()); err != nil && !errors.Is(err, http.ErrServerClosed) {
+				a.log.Warn(logs.ListenAndServe, zap.Error(err))
+				a.metrics.MarkUnhealthy(serverInfo.Address)
+			}
+		}()
+
+		a.servers = append(a.servers, srv)
+		a.log.Info(logs.ServerReconnectedSuccessfully, fields...)
+	}
+
+	a.unbindServers = failedServers
+
+	return len(a.unbindServers) == 0
+}

cmd/http-gw/integration_test.go

@@ -6,25 +6,30 @@ import (
 	"archive/zip"
 	"bytes"
 	"context"
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
 	"mime/multipart"
 	"net/http"
+	"os"
 	"sort"
 	"testing"
 	"time"
 
-	containerv2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
+	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"
@@ -46,11 +51,18 @@ func TestIntegration(t *testing.T) {
 	rootCtx := context.Background()
 	aioImage := "truecloudlab/frostfs-aio:"
 	versions := []string{
-		"1.2.7", // frostfs-storage v0.36.0 RC
+		"1.2.7",
+		"1.3.0",
+		"1.5.0",
 	}
 	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)
 
@@ -58,16 +70,21 @@ func TestIntegration(t *testing.T) {
 		ctx, cancel2 := context.WithCancel(rootCtx)
 
 		aioContainer := createDockerContainer(ctx, t, aioImage+version)
-		server, cancel := runServer()
+		server, cancel := runServer(file.Name())
 		clientPool := getPool(ctx, t, key)
 		CID, err := createContainer(ctx, t, clientPool, ownerID, version)
 		require.NoError(t, err, version)
 
+		token := makeBearerToken(t, key, ownerID, version)
+
 		t.Run("simple put "+version, func(t *testing.T) { simplePut(ctx, t, clientPool, CID, version) })
+		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("test namespaces "+version, func(t *testing.T) { checkNamespaces(ctx, t, clientPool, ownerID, CID, version) })
 
 		cancel()
 		server.Wait()
@@ -77,12 +94,14 @@ 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)
+	v.Set(cfgWalletPath, pathToWallet)
-	application := newApp(cancelCtx, WithConfig(v), WithLogger(l, lvl))
+	v.Set(cfgWalletPassphrase, "")
+
+	application := newApp(cancelCtx, v)
 	go application.Serve()
 
 	return application, cancel
@@ -96,7 +115,38 @@ func simplePut(ctx context.Context, t *testing.T, p *pool.Pool, CID cid.ID, vers
 	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{
@@ -118,9 +168,10 @@ 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)
+	return request, content, attributes
-	require.NoError(t, err)
+}
 
+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)
@@ -338,6 +389,40 @@ 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, version string) {
+	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,
@@ -420,7 +505,7 @@ 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 {
@@ -438,5 +523,39 @@ 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 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))
+	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

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/hex"
 	"fmt"
+	"io"
 	"math"
 	"os"
 	"path"
@@ -13,37 +14,65 @@ import (
 	"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"
@@ -62,6 +91,8 @@ const (
 	cfgTracingEnabled    = "tracing.enabled"
 	cfgTracingExporter   = "tracing.exporter"
 	cfgTracingEndpoint   = "tracing.endpoint"
+	cfgTracingTrustedCa  = "tracing.trusted_ca"
+	cfgTracingAttributes = "tracing.attributes"
 
 	// Pool config.
 	cfgConTimeout         = "connect_timeout"
@@ -72,6 +103,12 @@ const (
 
 	// 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"
@@ -96,6 +133,40 @@ const (
 	// 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"
@@ -114,6 +185,11 @@ var ignore = map[string]struct{}{
 	cmdVersion: {},
 }
 
+type Logger struct {
+	logger *zap.Logger
+	lvl    zap.AtomicLevel
+}
+
 func settings() *viper.Viper {
 	v := viper.New()
 	v.AutomaticEnv()
@@ -153,10 +229,18 @@ func settings() *viper.Viper {
 
 	// 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)
@@ -165,6 +249,7 @@ func settings() *viper.Viper {
 	v.SetDefault(cfgWebStreamRequestBody, true)
 	v.SetDefault(cfgWebMaxRequestBodySize, fasthttp.DefaultMaxRequestBodySize)
 
+	v.SetDefault(cfgWorkerPoolSize, 1000)
 	// upload header
 	v.SetDefault(cfgUploaderHeaderEnableDefaultTimestamp, false)
 
@@ -175,6 +260,13 @@ func settings() *viper.Viper {
 	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)
@@ -334,7 +426,29 @@ func mergeConfig(v *viper.Viper, fileName string) error {
 	return v.MergeConfig(cfgFile)
 }
 
-// newLogger constructs a zap.Logger instance for current application.
+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:
@@ -345,25 +459,60 @@ func mergeConfig(v *viper.Viper, fileName string) error {
 // 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) {
+func newStdoutLogger(v *viper.Viper, lvl zapcore.Level, settings LoggerAppSettings) *Logger {
-	lvl, err := getLogLevel(v)
+	stdout := zapcore.AddSync(os.Stderr)
-	if err != nil {
+	level := zap.NewAtomicLevelAt(lvl)
-		panic(err)
+
+	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()
+				}
+			}))
 	}
 
-	c := zap.NewProductionConfig()
+	return core
-	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) {
@@ -385,8 +534,58 @@ func getLogLevel(v *viper.Viper) (zapcore.Level, error) {
 	return lvl, nil
 }
 
-func fetchServers(v *viper.Viper) []ServerInfo {
+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) + "."
@@ -401,13 +600,18 @@ func fetchServers(v *viper.Viper) []ServerInfo {
 			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) (*pool.Pool, *treepool.Pool, *keys.PrivateKey) {
+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))
@@ -461,18 +665,15 @@ func getPools(ctx context.Context, logger *zap.Logger, cfg *viper.Viper) (*pool.
 	prm.SetLogger(logger)
 	prmTree.SetLogger(logger)
 
-	var apiGRPCDialOpts []grpc.DialOption
+	prmTree.SetMaxRequestAttempts(cfg.GetInt(cfgTreePoolMaxAttempts))
-	var treeGRPCDialOpts []grpc.DialOption
+
-	if cfg.GetBool(cfgTracingEnabled) {
 	interceptors := []grpc.DialOption{
 		grpc.WithUnaryInterceptor(grpctracing.NewUnaryClientInteceptor()),
 		grpc.WithStreamInterceptor(grpctracing.NewStreamClientInterceptor()),
+		grpc.WithContextDialer(dialSource.GrpcContextDialer()),
 	}
-		treeGRPCDialOpts = append(treeGRPCDialOpts, interceptors...)
+	prm.SetGRPCDialOptions(interceptors...)
-		apiGRPCDialOpts = append(apiGRPCDialOpts, interceptors...)
+	prmTree.SetGRPCDialOptions(interceptors...)
-	}
-	prm.SetGRPCDialOptions(apiGRPCDialOpts...)
-	prmTree.SetGRPCDialOptions(treeGRPCDialOpts...)
 
 	p, err := pool.NewPool(prm)
 	if err != nil {
@@ -531,3 +732,99 @@ func fetchSoftMemoryLimit(cfg *viper.Viper) int64 {
 
 	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)
@@ -96,5 +103,62 @@ 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

@@ -9,13 +9,26 @@ pprof:
 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
@@ -54,6 +67,7 @@ peers:
     priority: 2
     weight: 9
 
+reconnect_interval: 1m
 
 web:
   # Per-connection buffer size for requests' reading.
@@ -99,8 +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

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
@@ -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.                                                                                                    |
+| `cid`           | Single | Base58 encoded `container ID` or `container name` from NNS or `bucket name`.                                                                               |
-| `oid`           | Single | Base58 encoded object ID.                                                                                                                                  |
+| `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
@@ -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.

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

@@ -41,7 +41,7 @@ $ cat http.log
 # Structure
 
 | Section          | Description                                                    |
-|-----------------|-------------------------------------------------------|
+|------------------|----------------------------------------------------------------|
 | no section       | [General parameters](#general-section)                         |
 | `wallet`         | [Wallet configuration](#wallet-section)                        |
 | `peers`          | [Nodes configuration](#peers-section)                          |
@@ -54,7 +54,12 @@ $ cat http.log
 | `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
 
@@ -69,10 +74,13 @@ stream_timeout: 10s
 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.                                                      |
@@ -80,6 +88,8 @@ pool_error_threshold: 100
 | `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
 
@@ -158,12 +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`. |
-
+| `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
 
@@ -250,13 +270,37 @@ 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.
@@ -269,3 +313,160 @@ runtime:
 | 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
+```

go.mod

@@ -1,28 +1,37 @@
 module git.frostfs.info/TrueCloudLab/frostfs-http-gw
 
-go 1.20
+go 1.22
 
 require (
-	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230802075510-964c3edb3f44
+	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88
-	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241206094944-81c423e7094d
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6
+	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 v0.101.2-0.20230601131642-a0117042e8fc
+	github.com/nspcc-dev/neo-go v0.106.2
-	github.com/prometheus/client_golang v1.15.1
+	github.com/panjf2000/ants/v2 v2.5.0
-	github.com/prometheus/client_model v0.3.0
+	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 v1.8.3
+	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.opentelemetry.io/otel v1.16.0
+	go.opentelemetry.io/otel v1.28.0
-	go.opentelemetry.io/otel/trace v1.16.0
+	go.opentelemetry.io/otel/trace v1.28.0
-	go.uber.org/zap v1.24.0
+	go.uber.org/zap v1.27.0
-	google.golang.org/grpc v1.55.0
+	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 v1.2.1 // indirect
 	git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 // indirect
@@ -30,53 +39,53 @@ require (
 	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/antlr4-go/antlr/v4 v4.13.0 // indirect
+	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // 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 v4.2.0 // 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 v1.2.4 // 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 v1.5.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/uuid v1.3.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/gorilla/websocket v1.5.0 // indirect
+	github.com/gorilla/websocket v1.5.1 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.2 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
-	github.com/hashicorp/golang-lru/v2 v2.0.2 // indirect
 	github.com/hashicorp/hcl v1.0.0 // 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 v1.0.4 // 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/go-ordered-json v0.0.0-20240301084351-0246b013f8b2 // indirect
-	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20230615193820-9185820289ce // indirect
+	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20240521091047-78685785716d // indirect
-	github.com/nspcc-dev/rfc6979 v0.2.0 // 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/common v0.42.0 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
-	github.com/prometheus/procfs v0.9.0 // 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
@@ -88,26 +97,23 @@ require (
 	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.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.28.0 // indirect
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.16.0 // indirect
+	go.opentelemetry.io/otel/metric v1.28.0 // indirect
-	go.opentelemetry.io/otel/metric v1.16.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.28.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.16.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
-	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
-	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.9.0 // indirect
+	golang.org/x/crypto v0.24.0 // indirect
-	golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc // indirect
+	golang.org/x/sync v0.7.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
-	golang.org/x/sync v0.2.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/term v0.8.0 // indirect
-	golang.org/x/text v0.9.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
-	google.golang.org/protobuf v1.30.0 // 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

@@ -37,22 +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 v2.15.1-0.20230802075510-964c3edb3f44 h1:v6JqBD/VzZx3QSxbaXnUwnnJ1KEYheU4LzLGr3IhsAE=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e h1:kcBqZBiFIUBATUqEuvVigtkJJWQ2Gug/eYXn967o3M4=
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.15.1-0.20230802075510-964c3edb3f44/go.mod h1:pKJJRLOChW4zDQsAt1e8k/snWKljJtpkiPfxV53ngjI=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
-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-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-observability v0.0.0-20230531082742-c97d21411eb6 h1:aGQ6QaAnTerQ5Dq5b2/f9DUQtSqPkZZ/bkMx/HKuLCo=
+git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88 h1:9bvBDLApbbO5sXBKdODpE9tzy3HV99nXxkDWNn22rdI=
-git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6/go.mod h1:W8Nn08/l6aQ7UlIbpF7FsQou7TVpcRD1ZT1KG4TrFhE=
+git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88/go.mod h1:kbwB4v2o6RyOfCo9kEFeUDZIX3LKhmS0yXPrtvzkQ1g=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6 h1:u6lzNotV6MEMNEG/XeS7g+FjPrrf+j4gnOHtvun2KJc=
+git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241206094944-81c423e7094d h1:FpXI+mOrmJk3t2MKQFZuhLjCHDyDeo5rtP1WXl7gUWc=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6/go.mod h1:LI2GOj0pEx0jYTjB3QHja2PNhQFYL2pCm71RAFwDv0M=
+git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241206094944-81c423e7094d/go.mod h1:eoK7+KZQ9GJxbzIs6vTnoUJqFDppavInLRHaN4MYgZg=
 git.frostfs.info/TrueCloudLab/hrw v1.2.1 h1:ccBRK21rFvY5R1WotI6LNoPlizk7qSvdfD8lNIRudVc=
 git.frostfs.info/TrueCloudLab/hrw v1.2.1/go.mod h1:C1Ygde2n843yTZEQ0FP69jYiuaYV0kriLvP4zm8JuvM=
+git.frostfs.info/TrueCloudLab/multinet v0.0.0-20241015075604-6cb0d80e0972 h1:/960fWeyn2AFHwQUwDsWB3sbP6lTEnFnMzLMM6tx6N8=
+git.frostfs.info/TrueCloudLab/multinet v0.0.0-20241015075604-6cb0d80e0972/go.mod h1:2hM42MBrlhvN6XToaW6OWNk5ZLcu1FhaukGgxtfpDDI=
 git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 h1:M2KR3iBj7WpY3hP10IevfIB9MURr4O9mwVfJ+SjT3HA=
 git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0/go.mod h1:okpbKfVYf/BpejtfFTfhZqFP+sZ8rsHrP8Rr/jYPNRc=
 git.frostfs.info/TrueCloudLab/tzhash v1.8.0 h1:UFMnUIk0Zh17m8rjGHJMqku2hCgaXDqjqZzS4gsb4UA=
 git.frostfs.info/TrueCloudLab/tzhash v1.8.0/go.mod h1:dhY+oy274hV8wGvGL4MwwMpdL3GYvaX1a8GQZQHvlF8=
+git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02 h1:HeY8n27VyPRQe49l/fzyVMkWEB2fsLJYKp64pwA7tz4=
+git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02/go.mod h1:rQFJJdEOV7KbbMtQYR2lNfiZk+ONRDJSbMCTWxKt8Fw=
 github.com/Azure/azure-sdk-for-go v16.2.1+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8=
@@ -69,10 +71,6 @@ github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZ
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/CityOfZion/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1:MJCkWUBhi9pn/CrYO1Q3P687y2KeahrOPS9BD9LDGb0=
-github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
-github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
-github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
 github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
@@ -103,31 +101,22 @@ github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbt
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
-github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
+github.com/VictoriaMetrics/easyproto v0.1.4 h1:r8cNvo8o6sR4QShBXQd1bKw/VVLSQma/V2KhTBPf+Sc=
-github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
+github.com/VictoriaMetrics/easyproto v0.1.4/go.mod h1:QlGlzaJnDfFd8Lk6Ci/fuLxfTo3/GThPs2KH23mv710=
-github.com/abiosoft/ishell/v2 v2.0.2/go.mod h1:E4oTCXfo6QjoCart0QYa5m9w4S+deXs/P/9jA77A9Bs=
-github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
-github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alexflint/go-filemutex v0.0.0-20171022225611-72bdc8eae2ae/go.mod h1:CgnQgUtFrFz9mxFNtED3jI5tLDjKlOM+oUF/sTk6ps0=
-github.com/alicebob/gopher-json v0.0.0-20180125190556-5a6b3ba71ee6/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
-github.com/alicebob/miniredis v2.5.0+incompatible/go.mod h1:8HZjEj4yU0dwhYHky+DxYx+6BMjkBbe5ONFIF1MXffk=
 github.com/andybalholm/brotli v1.0.2/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
 github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
 github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210521073959-f0d4d129b7f1/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
+github.com/antlr4-go/antlr/v4 v4.13.1 h1:SqQKkuVZ+zWkMMNkjy5FZe5mr5WURWnlpmOuzYWrPrQ=
-github.com/antlr4-go/antlr/v4 v4.13.0 h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI=
+github.com/antlr4-go/antlr/v4 v4.13.1/go.mod h1:GKmUxMtwp6ZgGwZSva4eWPC5mS6vUAmOABFgjdkM7Nw=
-github.com/antlr4-go/antlr/v4 v4.13.0/go.mod h1:pfChB/xh/Unjila75QW7+VU4TSnWnnk9UTnmpPaOR2g=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
 github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
-github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -136,37 +125,27 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
 github.com/bits-and-blooms/bitset v1.2.0/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
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@@ -408,13 +378,11 @@ github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8
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@@ -431,8 +399,6 @@ github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXP
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@@ -447,7 +413,6 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -465,14 +430,9 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
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@@ -487,8 +447,8 @@ github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -511,8 +471,9 @@ github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
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@@ -526,8 +487,8 @@ github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB7
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@@ -535,23 +496,20 @@ github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgf
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@@ -562,31 +520,24 @@ github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH
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 github.com/tchap/go-patricia v2.2.6+incompatible/go.mod h1:bmLyhP68RS6kStMGxByiQ23RP/odRBOTVjwp2cDyi6I=
@@ -904,7 +817,8 @@ github.com/testcontainers/testcontainers-go v0.13.0 h1:OUujSlEGsXVo/ykPVZk3KanBN
 github.com/testcontainers/testcontainers-go v0.13.0/go.mod h1:z1abufU633Eb/FmSBTzV6ntZAC1eZBYPtaFsn4nPuDk=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
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-github.com/twmb/murmur3 v1.1.5/go.mod h1:Qq/R7NUyOfr65zD+6Q5IHKsJLwP7exErjN6lyyq3OSQ=
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@@ -920,8 +834,6 @@ github.com/valyala/fasthttp v1.28.0/go.mod h1:cmWIqlu99AO/RKcp1HWaViTqc57FswJOfY
 github.com/valyala/fasthttp v1.34.0 h1:d3AAQJ2DRcxJYHm7OXNXtXt2as1vMDfxeIcFvhmGGm4=
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 github.com/valyala/tcplisten v1.0.0/go.mod h1:T0xQ8SeCZGxckz9qRXTfG43PvQ/mcWh7FwZEA7Ioqkc=
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@@ -940,17 +852,15 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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-go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
 go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
+go.etcd.io/bbolt v1.3.9 h1:8x7aARPEXiXbHmtUwAIv7eV2fQFHrLLavdiJ3uzJXoI=
+go.etcd.io/bbolt v1.3.9/go.mod h1:zaO32+Ti0PK1ivdPtgMESzuzL2VPoIG1PCQNvOdo/dE=
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@@ -961,43 +871,34 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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@@ -1007,19 +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=
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 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -1030,8 +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/exp v0.0.0-20230515195305-f3d0a9c9a5cc/go.mod h1:V1LtkGg67GoY2N1AnLN78QLrzxkLyJw7RJb1gzOOz9w=
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 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -1056,8 +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=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
+golang.org/x/mod v0.17.0 h1:zY54UmvipHiNd+pm+m0x9KhZ9hl1/7QNMyxXbc6ICqA=
-golang.org/x/net v0.0.0-20180719180050-a680a1efc54d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -1105,15 +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 v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
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-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -1123,9 +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=
 golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/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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@@ -1137,17 +1029,14 @@ golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -1164,14 +1053,11 @@ golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1199,7 +1085,6 @@ golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/sys v0.0.0-20200728102440-3e129f6d46b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -1226,37 +1111,32 @@ golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1266,7 +1146,6 @@ golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e/go.mod h1:tRJNPiyCQ0inRvYxb
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@@ -1288,7 +1167,6 @@ golang.org/x/tools v0.0.0-20190706070813-72ffa07ba3db/go.mod h1:jcCCGcm9btYwXyDq
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@@ -1319,7 +1197,6 @@ golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc
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@@ -1329,11 +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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@@ -1403,9 +1283,10 @@ google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6D
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@@ -1429,10 +1310,8 @@ google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA5
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@@ -1446,10 +1325,8 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
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-gopkg.in/abiosoft/ishell.v2 v2.0.0/go.mod h1:sFp+cGtH6o4s1FtpVPTMcHq2yue+c4DGOVohJCPUzwY=
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@@ -1458,6 +1335,7 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
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@@ -1470,6 +1348,7 @@ gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
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+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=
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@@ -1479,6 +1358,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+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=
@@ -1530,6 +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

@@ -1,4 +1,4 @@
-package api
+package data
 
 import (
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -7,11 +7,21 @@ import (
 // NodeVersion represent node from tree service.
 type NodeVersion struct {
 	BaseNodeVersion
-	DeleteMarker bool
 }
 
 // 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/frostfs/services/pool_wrapper.go

@@ -1,115 +0,0 @@
-package services
-
-import (
-	"context"
-	"errors"
-	"fmt"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
-	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
-	grpcService "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree/service"
-)
-
-type GetNodeByPathResponseInfoWrapper struct {
-	response *grpcService.GetNodeByPathResponse_Info
-}
-
-func (n GetNodeByPathResponseInfoWrapper) GetNodeID() uint64 {
-	return n.response.GetNodeId()
-}
-
-func (n GetNodeByPathResponseInfoWrapper) GetParentID() uint64 {
-	return n.response.GetParentId()
-}
-
-func (n GetNodeByPathResponseInfoWrapper) GetTimestamp() uint64 {
-	return n.response.GetTimestamp()
-}
-
-func (n GetNodeByPathResponseInfoWrapper) GetMeta() []tree.Meta {
-	res := make([]tree.Meta, len(n.response.Meta))
-	for i, value := range n.response.Meta {
-		res[i] = value
-	}
-	return res
-}
-
-type GetSubTreeResponseBodyWrapper struct {
-	response *grpcService.GetSubTreeResponse_Body
-}
-
-func (n GetSubTreeResponseBodyWrapper) GetNodeID() uint64 {
-	return n.response.GetNodeId()
-}
-
-func (n GetSubTreeResponseBodyWrapper) GetParentID() uint64 {
-	return n.response.GetParentId()
-}
-
-func (n GetSubTreeResponseBodyWrapper) GetTimestamp() uint64 {
-	return n.response.GetTimestamp()
-}
-
-func (n GetSubTreeResponseBodyWrapper) GetMeta() []tree.Meta {
-	res := make([]tree.Meta, len(n.response.Meta))
-	for i, value := range n.response.Meta {
-		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
-}

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

@@ -4,40 +4,67 @@ 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"
-	"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/zap"
 )
 
 // DownloadByAddressOrBucketName handles download requests using simple cid/oid or bucketname/key format.
 func (h *Handler) DownloadByAddressOrBucketName(c *fasthttp.RequestCtx) {
-	test, _ := c.UserValue("oid").(string)
+	cidParam := c.UserValue("cid").(string)
-	var id oid.ID
+	oidParam := c.UserValue("oid").(string)
-	err := id.DecodeString(test)
+	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 {
-		h.byBucketname(c, h.receiveFile)
+		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.byAddress(c, h.receiveFile)
+		h.browseIndex(c, checkS3Err != nil)
 	}
 }
 
-func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) *request {
+func shouldDownload(oidParam string, downloadParam bool) bool {
-	return &request{
+	return !isDir(oidParam) || downloadParam
+}
+
+func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) request {
+	return request{
 		RequestCtx: ctx,
 		log:        log,
 	}
@@ -48,31 +75,25 @@ func (h *Handler) DownloadByAttribute(c *fasthttp.RequestCtx) {
 	h.byAttribute(c, h.receiveFile)
 }
 
-func (h *Handler) search(ctx context.Context, cid *cid.ID, key, val string, op object.SearchMatchType) (pool.ResObjectSearch, error) {
+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)
 
-	var prm pool.PrmObjectSearch
+	prm := PrmObjectSearch{
-	prm.SetContainerID(*cid)
+		PrmAuth: PrmAuth{
-	prm.SetFilters(filters)
+			BearerToken: bearerToken(ctx),
-	if btoken := bearerToken(ctx); btoken != nil {
+		},
-		prm.UseBearer(*btoken)
+		Container: cnrID,
+		Filters:   filters,
 	}
 
-	return h.pool.SearchObjects(ctx, prm)
+	return h.frostfs.SearchObjects(ctx, prm)
-}
-
-func (h *Handler) getContainer(ctx context.Context, cnrID cid.ID) (container.Container, error) {
-	var prm pool.PrmContainerGet
-	prm.SetContainerID(cnrID)
-
-	return h.pool.GetContainer(ctx, prm)
 }
 
 func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
 	method := zip.Store
-	if h.settings.ZipCompression() {
+	if h.config.ZipCompression() {
 		method = zip.Deflate
 	}
 
@@ -91,32 +112,27 @@ func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer,
 // DownloadZipped handles zip by prefix requests.
 func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 	scid, _ := c.UserValue("cid").(string)
-	prefix, _ := url.QueryUnescape(c.UserValue("prefix").(string))
+	prefix, _ := c.UserValue("prefix").(string)
-	log := h.log.With(zap.String("cid", scid), zap.String("prefix", prefix))
 
 	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log)
 
-	containerID, err := h.getContainerID(ctx, scid)
+	prefix, err := url.QueryUnescape(prefix)
 	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
+		response.Error(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
-	// check if container exists here to be able to return 404 error,
+	log = log.With(zap.String("cid", scid), zap.String("prefix", prefix))
-	// otherwise we get this error only in object iteration step
+
-	// and client get 200 OK.
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
-	if _, err = h.getContainer(ctx, *containerID); err != nil {
+	if err != nil {
-		log.Error(logs.CouldNotCheckContainerExistence, zap.Error(err))
+		logAndSendBucketError(c, log, 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 := h.search(ctx, containerID, object.AttributeFilePath, prefix, object.MatchCommonPrefix)
+	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)
@@ -138,7 +154,7 @@ func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 		empty := true
 		called := false
 		btoken := bearerToken(ctx)
-		addr.SetContainer(*containerID)
+		addr.SetContainer(bktInfo.CID)
 
 		errIter := resSearch.Iterate(func(id oid.ID) bool {
 			called = true
@@ -168,13 +184,14 @@ func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 }
 
 func (h *Handler) zipObject(ctx context.Context, zipWriter *zip.Writer, addr oid.Address, btoken *bearer.Token, bufZip []byte) error {
-	var prm pool.PrmObjectGet
+	prm := PrmObjectGet{
-	prm.SetAddress(addr)
+		PrmAuth: PrmAuth{
-	if btoken != nil {
+			BearerToken: btoken,
-		prm.UseBearer(*btoken)
+		},
+		Address: addr,
 	}
 
-	resGet, err := h.pool.GetObject(ctx, prm)
+	resGet, err := h.frostfs.GetObject(ctx, prm)
 	if err != nil {
 		return fmt.Errorf("get FrostFS object: %v", err)
 	}

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

@@ -3,191 +3,407 @@ package handler
 import (
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"net/url"
-	"sync/atomic"
+	"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/resolver"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"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/pool"
 	"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
-	pool              *pool.Pool
+	frostfs           FrostFS
 	ownerID           *user.ID
-	settings          *Settings
+	config            Config
-	containerResolver *resolver.ContainerResolver
+	containerResolver ContainerResolver
-	tree              *tree.Tree
+	tree              layer.TreeService
+	cache             *cache.BucketCache
+	workerPool        *ants.Pool
 }
 
-// Settings stores reloading parameters, so it has to provide atomic getters and setters.
+type AppParams struct {
-type Settings struct {
+	Logger   *zap.Logger
-	defaultTimestamp atomic.Bool
+	FrostFS  FrostFS
-	zipCompression   atomic.Bool
+	Owner    *user.ID
+	Resolver ContainerResolver
+	Cache    *cache.BucketCache
 }
 
-func (s *Settings) DefaultTimestamp() bool {
+func New(params *AppParams, config Config, tree layer.TreeService, workerPool *ants.Pool) *Handler {
-	return s.defaultTimestamp.Load()
-}
-
-func (s *Settings) SetDefaultTimestamp(val bool) {
-	s.defaultTimestamp.Store(val)
-}
-
-func (s *Settings) ZipCompression() bool {
-	return s.zipCompression.Load()
-}
-
-func (s *Settings) SetZipCompression(val bool) {
-	s.zipCompression.Store(val)
-}
-
-func New(params *utils.AppParams, settings *Settings, tree *tree.Tree) *Handler {
 	return &Handler{
 		log:               params.Logger,
-		pool:              params.Pool,
+		frostfs:           params.FrostFS,
 		ownerID:           params.Owner,
-		settings:          settings,
+		config:            config,
 		containerResolver: params.Resolver,
 		tree:              tree,
+		cache:             params.Cache,
+		workerPool:        workerPool,
 	}
 }
 
-// getContainerID decode container id, if it's not a valid container id
+// byNativeAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
-// then trey to resolve name using provided resolver.
-func (h *Handler) getContainerID(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)
-	}
-	return cnrID, err
-}
-
-// byAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
 // prepares request and object address to it.
-func (h *Handler) byAddress(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+func (h *Handler) byNativeAddress(ctx context.Context, req request, cnrID cid.ID, objID oid.ID, handler func(context.Context, request, oid.Address)) {
-	var (
+	addr := newAddress(cnrID, objID)
-		idCnr, _ = c.UserValue("cid").(string)
+	handler(ctx, req, addr)
-		idObj, _ = c.UserValue("oid").(string)
-		log      = h.log.With(zap.String("cid", idCnr), zap.String("oid", idObj))
-	)
-
-	ctx := utils.GetContextFromRequest(c)
-
-	cnrID, err := h.getContainerID(ctx, idCnr)
-	if err != nil {
-		log.Error(logs.WrongContainerID, 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(logs.WrongObjectID, zap.Error(err))
-		response.Error(c, "wrong object id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	var addr oid.Address
-	addr.SetContainer(*cnrID)
-	addr.SetObject(*objID)
-
-	f(ctx, *h.newRequest(c, log), addr)
 }
 
-// byBucketname is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+// byS3Path is a wrapper for function (e.g. request.headObject, request.receiveFile) that
-// prepares request and object address to it.
+// resolves object address from S3-like path <bucket name>/<object key>.
-func (h *Handler) byBucketname(req *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+func (h *Handler) byS3Path(ctx context.Context, req request, cnrID cid.ID, path string, handler func(context.Context, request, oid.Address)) {
-	var (
+	c, log := req.RequestCtx, req.log
-		bucketname = req.UserValue("cid").(string)
-		key        = req.UserValue("oid").(string)
-		log        = h.log.With(zap.String("bucketname", bucketname), zap.String("key", key))
-	)
 
-	ctx := utils.GetContextFromRequest(req)
+	foundOID, err := h.tree.GetLatestVersion(ctx, &cnrID, path)
-
-	cnrID, err := h.getContainerID(ctx, bucketname)
 	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
+		logAndSendBucketError(c, log, err)
-		response.Error(req, "wrong container id", fasthttp.StatusBadRequest)
 		return
 	}
-
+	if foundOID.IsDeleteMarker {
-	foundOid, err := h.tree.GetLatestVersion(ctx, cnrID, key)
-	if err != nil {
-		log.Error(logs.ObjectWasntFound, zap.Error(err))
-		response.Error(req, "object wasn't found", fasthttp.StatusNotFound)
-		return
-	}
-	if foundOid.DeleteMarker {
 		log.Error(logs.ObjectWasDeleted)
-		response.Error(req, "object deleted", fasthttp.StatusNotFound)
+		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(*cnrID)
+	addr.SetContainer(bktInfo.CID)
-	addr.SetObject(foundOid.OID)
+	addr.SetObject(objID)
 
-	f(ctx, *h.newRequest(req, log), addr)
+	handler(ctx, h.newRequest(c, log), addr)
 }
 
-// byAttribute is a wrapper similar to byAddress.
+func (h *Handler) findObjectByAttribute(ctx context.Context, log *zap.Logger, cnrID cid.ID, attrKey, attrVal string) (oid.ID, error) {
-func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+	res, err := h.search(ctx, cnrID, attrKey, attrVal, object.MatchStringEqual)
-	var (
-		scid, _ = c.UserValue("cid").(string)
-		key, _  = url.QueryUnescape(c.UserValue("attr_key").(string))
-		val, _  = url.QueryUnescape(c.UserValue("attr_val").(string))
-		log     = h.log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
-	)
-
-	ctx := utils.GetContextFromRequest(c)
-
-	containerID, err := h.getContainerID(ctx, scid)
-	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	res, err := h.search(ctx, containerID, key, val, object.MatchStringEqual)
 	if err != nil {
 		log.Error(logs.CouldNotSearchForObjects, zap.Error(err))
-		response.Error(c, "could not search for objects: "+err.Error(), fasthttp.StatusBadRequest)
+		return oid.ID{}, fmt.Errorf("could not search for objects: %w", err)
-		return
 	}
-
 	defer res.Close()
 
 	buf := make([]oid.ID, 1)
 
 	n, err := res.Read(buf)
 	if n == 0 {
-		if errors.Is(err, io.EOF) {
+		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))
-			response.Error(c, "object not found", fasthttp.StatusNotFound)
+			return oid.ID{}, fmt.Errorf("object not found: %w", err)
-			return
+		default:
-		}
-
 			log.Error(logs.ReadObjectListFailed, zap.Error(err))
-		response.Error(c, "read object list failed: "+err.Error(), fasthttp.StatusBadRequest)
+			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
 	}
 
-	var addrObj oid.Address
+	cidURLParam := c.UserValue("cid").(string)
-	addrObj.SetContainer(*containerID)
+	oidURLParam := c.UserValue("oid").(string)
-	addrObj.SetObject(buf[0])
 
-	f(ctx, *h.newRequest(c, log), addrObj)
+	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

@@ -2,16 +2,17 @@ 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"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -30,13 +31,14 @@ func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid
 
 	btoken := bearerToken(ctx)
 
-	var prm pool.PrmObjectHead
+	prm := PrmObjectHead{
-	prm.SetAddress(objectAddress)
+		PrmAuth: PrmAuth{
-	if btoken != nil {
+			BearerToken: btoken,
-		prm.UseBearer(*btoken)
+		},
+		Address: objectAddress,
 	}
 
-	obj, err := h.pool.HeadObject(ctx, prm)
+	obj, err := h.frostfs.HeadObject(ctx, prm)
 	if err != nil {
 		req.handleFrostFSErr(err, start)
 		return
@@ -70,22 +72,19 @@ func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid
 		}
 	}
 
-	idsToResponse(&req.Response, &obj)
+	idsToResponse(&req.Response, obj)
 
 	if len(contentType) == 0 {
 		contentType, _, err = readContentType(obj.PayloadSize(), func(sz uint64) (io.Reader, error) {
-			var prmRange pool.PrmObjectRange
+			prmRange := PrmObjectRange{
-			prmRange.SetAddress(objectAddress)
+				PrmAuth: PrmAuth{
-			prmRange.SetLength(sz)
+					BearerToken: btoken,
-			if btoken != nil {
+				},
-				prmRange.UseBearer(*btoken)
+				Address:      objectAddress,
+				PayloadRange: [2]uint64{0, sz},
 			}
 
-			resObj, err := h.pool.ObjectRange(ctx, prmRange)
+			return h.frostfs.RangeObject(ctx, prmRange)
-			if err != nil {
-				return nil, err
-			}
-			return &resObj, nil
 		})
 		if err != nil && err != io.EOF {
 			req.handleFrostFSErr(err, start)
@@ -105,14 +104,36 @@ func idsToResponse(resp *fasthttp.Response, obj *object.Object) {
 
 // HeadByAddressOrBucketName handles head requests using simple cid/oid or bucketname/key format.
 func (h *Handler) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
-	test, _ := c.UserValue("oid").(string)
+	cidParam, _ := c.UserValue("cid").(string)
-	var id oid.ID
+	oidParam, _ := c.UserValue("oid").(string)
 
-	err := id.DecodeString(test)
+	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 {
-		h.byBucketname(c, h.headObject)
+		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 {
-		h.byAddress(c, h.headObject)
+		logAndSendBucketError(c, log, checkS3Err)
+		return
 	}
 }
 

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

@@ -1,13 +1,17 @@
 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 {
@@ -45,3 +49,30 @@ func fetchMultipartFile(l *zap.Logger, r io.Reader, boundary string) (MultipartF
 		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/reader.go

@@ -14,7 +14,6 @@ import (
 	"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"
 )
@@ -48,36 +47,38 @@ func readContentType(maxSize uint64, rInit func(uint64) (io.Reader, error)) (str
 	return http.DetectContentType(buf), buf, err // to not lose io.EOF
 }
 
-func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oid.Address) {
+type getMultiobjectBodyParams struct {
+	obj     *Object
+	req     request
+	strSize string
+}
+
+func (h *Handler) receiveFile(ctx context.Context, req request, objAddress oid.Address) {
 	var (
-		err      error
+		shouldDownload = req.QueryArgs().GetBool("download")
-		dis      = "inline"
 		start          = time.Now()
 		filename       string
+		filepath       string
+		contentType    string
 	)
 
-	var prm pool.PrmObjectGet
+	prm := PrmObjectGet{
-	prm.SetAddress(objectAddress)
+		PrmAuth: PrmAuth{
-	if btoken := bearerToken(ctx); btoken != nil {
+			BearerToken: bearerToken(ctx),
-		prm.UseBearer(*btoken)
+		},
+		Address: objAddress,
 	}
 
-	rObj, err := h.pool.GetObject(ctx, prm)
+	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)
-	if req.Request.URI().QueryArgs().GetBool("download") {
+	payload := rObj.Payload
-		dis = "attachment"
-	}
-
 	payloadSize := rObj.Header.PayloadSize()
-
-	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(payloadSize, 10))
-	var contentType string
 	for _, attr := range rObj.Header.Attributes() {
 		key := attr.Key()
 		val := attr.Value()
@@ -92,29 +93,41 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oi
 		case object.AttributeFileName:
 			filename = val
 		case object.AttributeTimestamp:
-			value, err := strconv.ParseInt(val, 10, 64)
+			if err = req.setTimestamp(val); err != nil {
-			if err != nil {
+				req.log.Error(logs.CouldntParseCreationDate,
-				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
+		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
+	}
 
-	idsToResponse(&req.Response, &rObj.Header)
+	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 rObj.Payload, nil
+			return payload, nil
 		})
 		if err != nil && err != io.EOF {
 			req.log.Error(logs.CouldNotDetectContentTypeFromPayload, zap.Error(err))
@@ -126,16 +139,46 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oi
 		var headReader io.Reader = bytes.NewReader(payloadHead)
 
 		if err != io.EOF { // otherwise, we've already read full payload
-			headReader = io.MultiReader(headReader, rObj.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.
-		rObj.Payload = readCloser{headReader, rObj.Payload}
+		payload = readCloser{headReader, payload}
 	}
 	req.SetContentType(contentType)
-
+	req.Response.SetBodyStream(payload, int(payloadSize))
-	req.Response.Header.Set(fasthttp.HeaderContentDisposition, dis+"; filename="+path.Base(filename))
+}
-
+
-	req.Response.SetBodyStream(rObj.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

@@ -35,7 +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

@@ -15,7 +15,6 @@ import (
 	"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"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -44,23 +43,24 @@ func (pr *putResponse) encode(w io.Writer) error {
 }
 
 // Upload handles multipart upload request.
-func (h *Handler) Upload(req *fasthttp.RequestCtx) {
+func (h *Handler) Upload(c *fasthttp.RequestCtx) {
 	var (
 		file  MultipartFile
 		idObj oid.ID
 		addr  oid.Address
-		scid, _    = req.UserValue("cid").(string)
-		log        = h.log.With(zap.String("cid", scid))
-		bodyStream = req.RequestBodyStream()
-		drainBuf   = make([]byte, drainBufSize)
 	)
 
-	ctx := utils.GetContextFromRequest(req)
+	scid, _ := c.UserValue("cid").(string)
+	bodyStream := c.RequestBodyStream()
+	drainBuf := make([]byte, drainBufSize)
 
-	idCnr, err := h.getContainerID(ctx, scid)
+	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 {
-		log.Error(logs.WrongContainerID, zap.Error(err))
+		logAndSendBucketError(c, log, err)
-		response.Error(req, "wrong container id", fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -77,21 +77,23 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 			zap.Error(err),
 		)
 	}()
-	boundary := string(req.Request.Header.MultipartFormBoundary())
+
-	if file, err = fetchMultipartFile(h.log, bodyStream, boundary); err != nil {
+	boundary := string(c.Request.Header.MultipartFormBoundary())
+	if file, err = fetchMultipartFile(log, bodyStream, boundary); err != nil {
 		log.Error(logs.CouldNotReceiveMultipartForm, zap.Error(err))
-		response.Error(req, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
+		response.Error(c, "could not receive multipart/form: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
-	filtered, err := filterHeaders(h.log, &req.Request.Header)
+
+	filtered, err := filterHeaders(log, &c.Request.Header)
 	if err != nil {
 		log.Error(logs.CouldNotProcessHeaders, zap.Error(err))
-		response.Error(req, err.Error(), fasthttp.StatusBadRequest)
+		response.Error(c, err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
 	now := time.Now()
-	if rawHeader := req.Request.Header.Peek(fasthttp.HeaderDate); rawHeader != nil {
+	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 {
@@ -99,9 +101,9 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 		}
 	}
 
-	if err = utils.PrepareExpirationHeader(req, h.pool, filtered, now); err != nil {
+	if err = utils.PrepareExpirationHeader(c, h.frostfs, filtered, now); err != nil {
 		log.Error(logs.CouldNotPrepareExpirationHeader, zap.Error(err))
-		response.Error(req, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
+		response.Error(c, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
@@ -121,7 +123,7 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 		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.settings.DefaultTimestamp() {
+	if _, ok := filtered[object.AttributeTimestamp]; !ok && h.config.DefaultTimestamp() {
 		timestamp := object.NewAttribute()
 		timestamp.SetKey(object.AttributeTimestamp)
 		timestamp.SetValue(strconv.FormatInt(time.Now().Unix(), 10))
@@ -129,31 +131,33 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 	}
 
 	obj := object.New()
-	obj.SetContainerID(*idCnr)
+	obj.SetContainerID(bktInfo.CID)
-	obj.SetOwnerID(h.ownerID)
+	obj.SetOwnerID(*h.ownerID)
 	obj.SetAttributes(attributes...)
 
-	var prm pool.PrmObjectPut
+	prm := PrmObjectCreate{
-	prm.SetHeader(*obj)
+		PrmAuth: PrmAuth{
-	prm.SetPayload(file)
+			BearerToken: h.fetchBearerToken(ctx),
-
+		},
-	bt := h.fetchBearerToken(ctx)
+		Object:                 obj,
-	if bt != nil {
+		Payload:                file,
-		prm.UseBearer(*bt)
+		ClientCut:              h.config.ClientCut(),
+		WithoutHomomorphicHash: bktInfo.HomomorphicHashDisabled,
+		BufferMaxSize:          h.config.BufferMaxSizeForPut(),
 	}
 
-	if idObj, err = h.pool.PutObject(ctx, prm); err != nil {
+	if idObj, err = h.frostfs.CreateObject(ctx, prm); err != nil {
-		h.handlePutFrostFSErr(req, err)
+		h.handlePutFrostFSErr(c, err, log)
 		return
 	}
 
 	addr.SetObject(idObj)
-	addr.SetContainer(*idCnr)
+	addr.SetContainer(bktInfo.CID)
 
 	// Try to return the response, otherwise, if something went wrong, throw an error.
-	if err = newPutResponse(addr).encode(req); err != nil {
+	if err = newPutResponse(addr).encode(c); err != nil {
 		log.Error(logs.CouldNotEncodeResponse, zap.Error(err))
-		response.Error(req, "could not encode response", fasthttp.StatusBadRequest)
+		response.Error(c, "could not encode response", fasthttp.StatusBadRequest)
 
 		return
 	}
@@ -170,15 +174,15 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 		}
 	}
 	// Report status code and content type.
-	req.Response.SetStatusCode(fasthttp.StatusOK)
+	c.Response.SetStatusCode(fasthttp.StatusOK)
-	req.Response.Header.SetContentType(jsonHeader)
+	c.Response.Header.SetContentType(jsonHeader)
 }
 
-func (h *Handler) handlePutFrostFSErr(r *fasthttp.RequestCtx, err error) {
+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...)
 
-	h.log.Error(logs.CouldNotStoreFileInFrostfs, logFields...)
+	log.Error(logs.CouldNotStoreFileInFrostfs, logFields...)
 	response.Error(r, msg, statusCode)
 }
 

internal/handler/utils.go

@@ -9,6 +9,10 @@ import (
 	"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"
 )
@@ -37,6 +41,18 @@ func bearerToken(ctx context.Context) *bearer.Token {
 	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 {
@@ -58,3 +74,20 @@ func isValidValue(s string) bool {
 	}
 	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

@@ -4,13 +4,15 @@ import (
 	"context"
 	"errors"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api"
+	"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) (*api.NodeVersion, error)
+	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 (

internal/logs/logs.go

@@ -4,14 +4,12 @@ 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
-	WrongContainerID                                                      = "wrong container id"                                                                     // Error in ../../downloader/download.go and uploader/upload.go
 	WrongObjectID                                                         = "wrong object id"                                                                        // Error in ../../downloader/download.go
-	ObjectWasntFound                                                      = "object wasn't found"                                                                    // 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
-	CouldNotCheckContainerExistence                                       = "could not check container existence"                                                    // 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
@@ -21,6 +19,7 @@ const (
 	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
@@ -32,6 +31,9 @@ const (
 	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
@@ -68,4 +70,27 @@ const (
 	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

@@ -76,6 +76,15 @@ var appMetricsDesc = map[string]map[string]Description{
 			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 {
@@ -148,3 +157,12 @@ func mustNewGaugeVec(description Description) *prometheus.GaugeVec {
 		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/metrics.go

@@ -14,11 +14,13 @@ const (
 	stateSubsystem     = "state"
 	poolSubsystem      = "pool"
 	serverSubsystem    = "server"
+	statisticSubsystem = "statistic"
 )
 
 const (
 	healthMetric      = "health"
 	versionInfoMetric = "version_info"
+	droppedLogs       = "dropped_logs"
 )
 
 const (
@@ -35,8 +37,6 @@ const (
 	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"
@@ -69,6 +69,7 @@ type GateMetrics struct {
 	stateMetrics
 	poolMetricsCollector
 	serverMetrics
+	statisticMetrics
 }
 
 type stateMetrics struct {
@@ -76,6 +77,10 @@ type stateMetrics struct {
 	versionInfo *prometheus.GaugeVec
 }
 
+type statisticMetrics struct {
+	droppedLogs prometheus.Counter
+}
+
 type poolMetricsCollector struct {
 	scraper             StatisticScraper
 	overallErrors       prometheus.Gauge
@@ -96,10 +101,14 @@ func NewGateMetrics(p StatisticScraper) *GateMetrics {
 	serverMetric := newServerMetrics()
 	serverMetric.register()
 
+	statsMetric := newStatisticMetrics()
+	statsMetric.register()
+
 	return &GateMetrics{
 		stateMetrics:         *stateMetric,
 		poolMetricsCollector: *poolMetric,
 		serverMetrics:        *serverMetric,
+		statisticMetrics:     *statsMetric,
 	}
 }
 
@@ -107,6 +116,7 @@ func (g *GateMetrics) Unregister() {
 	g.stateMetrics.unregister()
 	prometheus.Unregister(&g.poolMetricsCollector)
 	g.serverMetrics.unregister()
+	g.statisticMetrics.unregister()
 }
 
 func newStateMetrics() *stateMetrics {
@@ -116,6 +126,20 @@ func newStateMetrics() *stateMetrics {
 	}
 }
 
+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)
@@ -134,6 +158,13 @@ func (m stateMetrics) SetVersion(ver string) {
 	m.versionInfo.WithLabelValues(ver).Set(1)
 }
 
+func (s *statisticMetrics) DroppedLogsInc() {
+	if s == nil {
+		return
+	}
+	s.droppedLogs.Inc()
+}
+
 func newPoolMetricsCollector(p StatisticScraper) *poolMetricsCollector {
 	return &poolMetricsCollector{
 		scraper:             p,
@@ -191,8 +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()))

metrics/service.go

@@ -40,6 +40,9 @@ func (ms *Service) ShutDown(ctx context.Context) {
 	ms.log.Info(logs.ShuttingDownService, zap.String("endpoint", ms.Addr))
 	err := ms.Shutdown(ctx)
 	if err != nil {
-		ms.log.Panic(logs.CantShutDownService)
+		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, err
+		}
+
+		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 + "." + domain
+		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)

tokens/bearer-token.go

@@ -52,8 +52,8 @@ func BearerTokenFromCookie(h *fasthttp.RequestHeader) []byte {
 
 // StoreBearerTokenAppCtx extracts a bearer token from the header or cookie and stores
 // it in the application context.
-func StoreBearerTokenAppCtx(ctx context.Context, req *fasthttp.RequestCtx) (context.Context, error) {
+func StoreBearerTokenAppCtx(ctx context.Context, c *fasthttp.RequestCtx) (context.Context, error) {
-	tkn, err := fetchBearerToken(req)
+	tkn, err := fetchBearerToken(c)
 	if err != nil {
 		return nil, err
 	}

tokens/bearer-token_test.go

@@ -23,19 +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 {
@@ -45,14 +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 {
@@ -62,7 +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
@@ -76,42 +103,76 @@ func Test_fetchBearerToken(t *testing.T) {
 
 	cases := []struct {
 		name   string
-
 		cookie string
 		header string
-
 		error  string
+		nilCtx bool
 		expect *bearer.Token
 	}{
-		{name: "empty"},
+		{
-
+			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:   "nil context",
-		{name: "header token unmarshal error", header: "dGVzdAo=", error: "can't unmarshal bearer token"},
+			nilCtx: true,
-		{name: "cookie token unmarshal error", cookie: "dGVzdAo=", error: "can't unmarshal bearer token"},
+		},
-
+		{
+			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:   "bad cookie, but good header",
-		{name: "ok for cookie", cookie: t64, expect: tkn},
+			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 == "" {
@@ -139,7 +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
@@ -162,3 +223,85 @@ func Test_checkAndPropagateBearerToken(t *testing.T) {
 	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

@@ -2,11 +2,12 @@ package tree
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api/layer"
+	"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"
 )
@@ -20,6 +21,7 @@ type (
 	// 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 {
@@ -27,8 +29,14 @@ type (
 		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
@@ -47,16 +55,18 @@ var (
 
 const (
 	FileNameKey      = "FileName"
-)
+	settingsFileName = "bucket-settings"
 
-const (
 	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 = "/"
 )
@@ -73,25 +83,28 @@ type Meta interface {
 
 type NodeResponse interface {
 	GetMeta() []Meta
+	GetTimestamp() []uint64
+	GetNodeID() []uint64
+	GetParentID() []uint64
 }
 
 func newTreeNode(nodeInfo NodeResponse) (*treeNode, error) {
-	treeNode := &treeNode{
+	tNode := &treeNode{
 		Meta: make(map[string]string, len(nodeInfo.GetMeta())),
 	}
 
 	for _, kv := range nodeInfo.GetMeta() {
 		switch kv.GetKey() {
 		case oidKV:
-			if err := treeNode.ObjID.DecodeString(string(kv.GetValue())); err != nil {
+			if err := tNode.ObjID.DecodeString(string(kv.GetValue())); err != nil {
 				return nil, err
 			}
 		default:
-			treeNode.Meta[kv.GetKey()] = string(kv.GetValue())
+			tNode.Meta[kv.GetKey()] = string(kv.GetValue())
 		}
 	}
 
-	return treeNode, nil
+	return tNode, nil
 }
 
 func (n *treeNode) Get(key string) (string, bool) {
@@ -104,30 +117,94 @@ func (n *treeNode) FileName() (string, bool) {
 	return value, ok
 }
 
-func newNodeVersion(node NodeResponse) (*api.NodeVersion, error) {
+func newNodeVersion(node NodeResponse) (*data.NodeVersion, error) {
-	treeNode, err := newTreeNode(node)
+	tNode, err := newTreeNode(node)
 	if err != nil {
 		return nil, fmt.Errorf("invalid tree node: %w", err)
 	}
 
-	return newNodeVersionFromTreeNode(treeNode), nil
+	return newNodeVersionFromTreeNode(tNode), nil
 }
 
-func newNodeVersionFromTreeNode(treeNode *treeNode) *api.NodeVersion {
+func newNodeVersionFromTreeNode(treeNode *treeNode) *data.NodeVersion {
 	_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
-
+	version := &data.NodeVersion{
-	version := &api.NodeVersion{
+		BaseNodeVersion: data.BaseNodeVersion{
-		BaseNodeVersion: api.BaseNodeVersion{
 			OID:            treeNode.ObjID,
+			IsDeleteMarker: isDeleteMarker,
 		},
-		DeleteMarker: isDeleteMarker,
 	}
 
 	return version
 }
 
-func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*api.NodeVersion, error) {
+func newNodeInfo(node NodeResponse) data.NodeInfo {
-	meta := []string{oidKV, isDeleteMarkerKV}
+	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{
@@ -135,22 +212,248 @@ func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName s
 		TreeID:     versionTree,
 		Path:       path,
 		Meta:       meta,
-		LatestOnly: true,
+		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 newNodeVersion(nodes[0])
+	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()))
+		})
+	}
+}

utils/attributes.go

@@ -11,10 +11,18 @@ import (
 	"time"
 	"unicode"
 	"unicode/utf8"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 )
 
+type EpochDurations struct {
+	CurrentEpoch  uint64
+	MsPerBlock    int64
+	BlockPerEpoch uint64
+}
+
+type EpochInfoFetcher interface {
+	GetEpochDurations(context.Context) (*EpochDurations, error)
+}
+
 const (
 	UserAttributeHeaderPrefix = "X-Attribute-"
 )
@@ -151,7 +159,7 @@ func title(str string) string {
 	return string(r0) + str[size:]
 }
 
-func PrepareExpirationHeader(ctx context.Context, p *pool.Pool, headers map[string]string, now time.Time) error {
+func PrepareExpirationHeader(ctx context.Context, epochFetcher EpochInfoFetcher, headers map[string]string, now time.Time) error {
 	formatsNum := 0
 	index := -1
 	for i, transformer := range transformers {
@@ -165,7 +173,7 @@ func PrepareExpirationHeader(ctx context.Context, p *pool.Pool, headers map[stri
 	case 0:
 		return nil
 	case 1:
-		epochDuration, err := GetEpochDurations(ctx, p)
+		epochDuration, err := epochFetcher.GetEpochDurations(ctx)
 		if err != nil {
 			return fmt.Errorf("couldn't get epoch durations from network info: %w", err)
 		}

utils/params.go

@@ -1,15 +0,0 @@
-package utils
-
-import (
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
-	"go.uber.org/zap"
-)
-
-type AppParams struct {
-	Logger   *zap.Logger
-	Pool     *pool.Pool
-	Owner    *user.ID
-	Resolver *resolver.ContainerResolver
-}

utils/tracing.go

@@ -30,12 +30,12 @@ func (c *httpCarrier) Set(key string, value string) {
 func (c *httpCarrier) Keys() []string {
 	dict := make(map[string]interface{})
 	c.r.Request.Header.VisitAll(
-		func(key, value []byte) {
+		func(key, _ []byte) {
 			dict[string(key)] = true
 		},
 	)
 	c.r.Response.Header.VisitAll(
-		func(key, value []byte) {
+		func(key, _ []byte) {
 			dict[string(key)] = true
 		},
 	)

utils/util.go

@@ -2,36 +2,11 @@ package utils
 
 import (
 	"context"
-	"fmt"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
 )
 
-type EpochDurations struct {
-	CurrentEpoch  uint64
-	MsPerBlock    int64
-	BlockPerEpoch uint64
-}
-
-func GetEpochDurations(ctx context.Context, p *pool.Pool) (*EpochDurations, error) {
-	networkInfo, err := p.NetworkInfo(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	res := &EpochDurations{
-		CurrentEpoch:  networkInfo.CurrentEpoch(),
-		MsPerBlock:    networkInfo.MsPerBlock(),
-		BlockPerEpoch: networkInfo.EpochDuration(),
-	}
-
-	if res.BlockPerEpoch == 0 {
-		return nil, fmt.Errorf("EpochDuration is empty")
-	}
-	return res, nil
-}
-
 // SetContextToRequest adds new context to fasthttp request.
 func SetContextToRequest(ctx context.Context, c *fasthttp.RequestCtx) {
 	c.SetUserValue("context", ctx)
@@ -41,3 +16,34 @@ func SetContextToRequest(ctx context.Context, c *fasthttp.RequestCtx) {
 func GetContextFromRequest(c *fasthttp.RequestCtx) context.Context {
 	return c.UserValue("context").(context.Context)
 }
+
+type ctxReqLoggerKeyType struct{}
+
+// SetReqLog sets child zap.Logger in the context.
+func SetReqLog(ctx context.Context, log *zap.Logger) context.Context {
+	if ctx == nil {
+		return nil
+	}
+	return context.WithValue(ctx, ctxReqLoggerKeyType{}, log)
+}
+
+// GetReqLog returns log if set.
+// If zap.Logger isn't set returns nil.
+func GetReqLog(ctx context.Context) *zap.Logger {
+	if ctx == nil {
+		return nil
+	} else if r, ok := ctx.Value(ctxReqLoggerKeyType{}).(*zap.Logger); ok {
+		return r
+	}
+	return nil
+}
+
+// GetReqLogOrDefault returns log from context, if it exists.
+// If the log is missing from the context, the default logger is returned.
+func GetReqLogOrDefault(ctx context.Context, defaultLog *zap.Logger) *zap.Logger {
+	log := GetReqLog(ctx)
+	if log == nil {
+		log = defaultLog
+	}
+	return log
+}