[#164] Add tracing attributes

Signed-off-by: Roman Loginov <r.loginov@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
-ENV GOGC off
-ENV CGO_ENABLED 0
+FROM basebuilder AS builder
+ENV GOGC=off
+ENV CGO_ENABLED=0
 ARG BUILD=now
 ARG VERSION=dev
 ARG REPO=repository

.forgejo/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
@@ -38,4 +42,4 @@ jobs:
         run: make dep
 
       - name: Run tests
-        run: make test
+        run: make test

.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

.gitignore

@@ -18,12 +18,4 @@ coverage.txt
 coverage.html
 
 # debhelpers
-**/*debhelper*
-
-# debian package build files
-debian/files
-debian/changelog
-debian/*.log
-debian/*.substvars
-debian/frostfs-http-gw/
-
+**/.debhelper

.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

@@ -4,6 +4,59 @@ This document outlines major changes between releases.
 
 ## [Unreleased]
 
+### Added
+- Support percent-encoding for GET queries (#134)
+- Add `trace_id` to logs (#148)
+- Add `cors` config params (#158)
+
+### Changed
+- Update go version to 1.22 (#132)
+
+## [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
@@ -72,4 +125,7 @@ To see CHANGELOG for older versions, refer to https://github.com/nspcc-dev/neofs
 
 [0.27.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/72734ab4...v0.27.0
 [0.28.0]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.27.0...v0.28.0
-[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.28.0...master
+[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
+[Unreleased]: https://git.frostfs.info/TrueCloudLab/frostfs-http-gw/compare/v0.30.0...master

CODEOWNERS

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

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
-LINT_VERSION ?= 1.54.0
-TRUECLOUDLAB_LINT_VERSION ?= 0.0.2
+GO_VERSION ?= 1.22
+LINT_VERSION ?= 1.60.3
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.6
 BUILD ?= $(shell date -u --iso=seconds)
 
 HUB_IMAGE ?= truecloudlab/frostfs-http-gw
@@ -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"
@@ -149,11 +183,10 @@ version:
 # Clean up
 clean:
 	rm -rf vendor
-	rm -rf $(BINDIR)
+	rm -rf $(BINDIR) 
 
 # Package for Debian
 debpackage:
-	cp debian/changelog.init debian/changelog
 	dch --package frostfs-http-gw \
 			--controlmaint \
 			--newversion $(PKG_VERSION) \

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>.
@@ -466,13 +466,13 @@ You can always upload files to public containers (open for anyone to put
 objects into), but for restricted containers you need to explicitly allow PUT
 operations for a request signed with your HTTP Gateway keys.
 
-If your don't want to manage gateway's secret keys and adjust eACL rules when
+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 ans pass them from the client via gate down to FrostFS level
+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 ACL data (refer to FrostFS
+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
@@ -482,33 +482,31 @@ 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
+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) and
-the address of the sender who will do the request to FrostFS (in our case, it's a gateway wallet address).
+In order to generate a bearer token, you need to have wallet (which will be used to sign the token)
 
-Suppose we have:
-* **NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3** (token owner (gateway address))
+1. Suppose you have a container with private policy for wallet key
 
-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==
+$ 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) and save it to **bearer.json**:
+
+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,
-        "ownerID": {
-            "value": "NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg=="
-        },
         "lifetime": {
             "exp": "10000",
             "nbf": "0",
@@ -521,7 +519,7 @@ $ echo 'NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3' | base58 --decode | base64
 
 3. Sign it with the wallet:
 ```
-$ frostfs-cli util sign bearer-token --from bearer.json --to signed.json -w ./wallet.json
+$ frostfs-cli util sign bearer-token --from bearer.json --to signed.json -w <wallet>
 ```
 
 4. Encode to base64 to use in header:
@@ -542,47 +540,32 @@ $ curl -F 'file=@cat.jpeg;filename=cat.jpeg' -H "Authorization: Bearer Ck4KKgoEC
 # }
 ```
 
-##### 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
+##### 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
 
-For example:
 ```
-$ frostfs-cli -w ./wallet.json --basic-acl 0x0FFFCFFF -r 192.168.130.72:8080 container create --policy "REP 3"  --await
+$ echo 'NhVtreTTCoqsMQV5Wp55fqnriiUCpEaKm3' | base58 --decode | base64
+# output: NezFK4ujidF+X7bB88uzREQzRQeAvdj3Gg==
 ```
 
-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**:
+Then specify this value in Bearer Token Json
 ```
 {
-    "version": {
-        "major": 0,
-        "minor": 0
-    },
-    "containerID": {
-        "value": "mRnZWzewzxjzIPa7Fqlfqdl3TM1KpJ0YnsXsEhafJJg="
-    },
-    "records": [
-        {
-            "operation": "PUT",
-            "action": "DENY",
-            "filters": [],
-            "targets": [
-                {
-                    "role": "OTHERS",
-                    "keys": []
-                }
-            ]
-        }
-    ]
-}
+    "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.
+
 ### Metrics and Pprof
 
 If enabled, Prometheus metrics are available at `localhost:8084` endpoint
@@ -592,3 +575,26 @@ 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 @@
-v0.28.0
+v0.30.0

cmd/http-gw/app.go

@@ -1,19 +1,29 @@
 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"
+	v2container "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
+	"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"
@@ -32,7 +42,9 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"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 +62,11 @@ type (
 		resolver  *resolver.ContainerResolver
 		metrics   *gateMetrics
 		services  []*metrics.Service
-		settings  *handler.Settings
-		servers   []Server
+		settings  *appSettings
+
+		servers       []Server
+		unbindServers []ServerInfo
+		mu            sync.RWMutex
 	}
 
 	// App is an interface for the main gateway function.
@@ -69,6 +84,37 @@ type (
 		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
+
+		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
+	}
+
+	CORS struct {
+		AllowOrigin      string
+		AllowMethods     []string
+		AllowHeaders     []string
+		ExposeHeaders    []string
+		AllowCredentials bool
+		MaxAge           int
+	}
 )
 
 // WithLogger returns Option to set a specific logger.
@@ -104,6 +150,8 @@ func newApp(ctx context.Context, opt ...Option) App {
 		opt[i](a)
 	}
 
+	a.initAppSettings()
+
 	// -- setup FastHTTP server --
 	a.webServer.Name = "frost-http-gw"
 	a.webServer.ReadBufferSize = a.cfg.GetInt(cfgWebReadBufferSize)
@@ -117,7 +165,7 @@ 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 +173,6 @@ func newApp(ctx context.Context, opt ...Option) App {
 
 	a.setRuntimeParameters()
 
-	a.initAppSettings()
 	a.initResolver()
 	a.initMetrics()
 	a.initTracing(ctx)
@@ -134,9 +181,126 @@ 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),
+	}
+	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)
+
+	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
+}
+
+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 (a *app) initResolver() {
@@ -149,8 +313,9 @@ 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)
@@ -325,7 +490,7 @@ func (a *app) setHealthStatus() {
 }
 
 func (a *app) Serve() {
-	handler := handler.New(a.AppParams(), a.settings, tree.NewTree(services.NewPoolWrapper(a.treePool)))
+	handler := handler.New(a.AppParams(), a.settings, tree.NewTree(frostfs.NewPoolWrapper(a.treePool)))
 
 	// Configure router.
 	a.configureRouter(handler)
@@ -333,16 +498,22 @@ func (a *app) Serve() {
 	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()))
-			if err := a.webServer.Serve(a.servers[i].Listener()); err != nil && err != http.ErrServerClosed {
-				a.metrics.MarkUnhealthy(a.servers[i].Address())
+			a.log.Info(logs.StartingServer, zap.String("address", servs[i].Address()))
+			if err := a.webServer.Serve(servs[i].Listener()); err != nil && err != http.ErrServerClosed {
+				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)
 
@@ -392,6 +563,10 @@ 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 +580,7 @@ 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 +589,6 @@ 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)
@@ -439,7 +609,6 @@ func (a *app) stopServices() {
 		svc.ShutDown(ctx)
 	}
 }
-
 func (a *app) configureRouter(handler *handler.Handler) {
 	r := router.New()
 	r.RedirectTrailingSlash = true
@@ -450,37 +619,162 @@ 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.HEAD("/get/{cid}/{oid:*}", a.logger(a.tokenizer(a.tracer(handler.HeadByAddressOrBucketName))))
+	r.GET("/get/{cid}/{oid:*}", a.addMiddlewares(handler.DownloadByAddressOrBucketName))
+	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.HEAD("/get_by_attribute/{cid}/{attr_key}/{attr_val:*}", a.logger(a.tokenizer(a.tracer(handler.HeadByAttribute))))
+	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.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 +783,43 @@ 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(appCtx, req, "REQUEST")
+		appCtx, span := utils.StartHTTPServerSpan(a.ctx, 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 {
-	return &utils.AppParams{
+func (a *app) reqNamespace(h fasthttp.RequestHandler) fasthttp.RequestHandler {
+	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 +829,7 @@ 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
@@ -538,21 +846,24 @@ 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)
-		if index == -1 {
-			continue
-		}
-
-		if serverInfo.TLS.Enabled {
-			if err := a.servers[index].UpdateCert(serverInfo.TLS.CertFile, serverInfo.TLS.KeyFile); err != nil {
-				return fmt.Errorf("failed to update tls certs: %w", err)
+		ser := a.getServer(serverInfo.Address)
+		if ser != nil {
+			if serverInfo.TLS.Enabled {
+				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
 		}
-		found = true
 	}
 
 	if !found {
@@ -562,13 +873,29 @@ 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 +911,29 @@ 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 +958,60 @@ 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

@@ -6,29 +6,35 @@ 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"
+	"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"
 	"github.com/testcontainers/testcontainers-go/wait"
+	"go.uber.org/zap/zapcore"
 )
 
 type putResponse struct {
@@ -46,11 +52,18 @@ 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 +71,21 @@ 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()
@@ -77,11 +95,14 @@ 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)
+	v.Set(cfgWalletPassphrase, "")
+
+	l, lvl := newStdoutLogger(v, zapcore.DebugLevel)
 	application := newApp(cancelCtx, WithConfig(v), WithLogger(l, lvl))
 	go application.Serve()
 
@@ -96,7 +117,38 @@ 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 +170,10 @@ func makePutRequestAndCheck(ctx context.Context, t *testing.T, p *pool.Pool, cnr
 	request.Header.Set("Content-Type", w.FormDataContentType())
 	request.Header.Set("X-Attribute-"+keyAttr, valAttr)
 
-	resp, err := http.DefaultClient.Do(request)
-	require.NoError(t, err)
+	return request, content, attributes
+}
 
+func checkPutResponse(ctx context.Context, t *testing.T, p *pool.Pool, cnrID cid.ID, resp *http.Response, content string, attributes map[string]string) {
 	defer func() {
 		err := resp.Body.Close()
 		require.NoError(t, err)
@@ -338,6 +391,40 @@ 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 +507,7 @@ 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 +525,39 @@ 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

@@ -9,7 +9,7 @@ import (
 func main() {
 	globalContext, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	v := settings()
-	logger, atomicLevel := newLogger(v)
+	logger, atomicLevel := pickLogger(v)
 
 	application := newApp(globalContext, WithLogger(logger, atomicLevel), WithConfig(v))
 	go application.Serve()

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 +14,63 @@ 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"
+
 	// Web.
 	cfgWebReadBufferSize     = "web.read_buffer_size"
 	cfgWebWriteBufferSize    = "web.write_buffer_size"
@@ -59,9 +86,11 @@ const (
 	cfgPprofAddress      = "pprof.address"
 
 	// Tracing ...
-	cfgTracingEnabled  = "tracing.enabled"
-	cfgTracingExporter = "tracing.exporter"
-	cfgTracingEndpoint = "tracing.endpoint"
+	cfgTracingEnabled    = "tracing.enabled"
+	cfgTracingExporter   = "tracing.exporter"
+	cfgTracingEndpoint   = "tracing.endpoint"
+	cfgTracingTrustedCa  = "tracing.trusted_ca"
+	cfgTracingAttributes = "tracing.attributes"
 
 	// Pool config.
 	cfgConTimeout         = "connect_timeout"
@@ -71,7 +100,13 @@ const (
 	cfgPoolErrorThreshold = "pool_error_threshold"
 
 	// Logger.
-	cfgLoggerLevel = "logger.level"
+	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 +131,37 @@ 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"
+
 	// Command line args.
 	cmdHelp          = "help"
 	cmdVersion       = "version"
@@ -153,10 +219,21 @@ 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)
 
+	v.SetDefault(cfgIndexPageEnabled, false)
+	v.SetDefault(cfgIndexPageTemplatePath, "")
+
+	// frostfs:
+	v.SetDefault(cfgBufferMaxSizeForPut, defaultBufferMaxSizeForPut)
+
 	// web-server:
 	v.SetDefault(cfgWebReadBufferSize, 4096)
 	v.SetDefault(cfgWebWriteBufferSize, 4096)
@@ -175,6 +252,13 @@ 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 +418,25 @@ func mergeConfig(v *viper.Viper, fileName string) error {
 	return v.MergeConfig(cfgFile)
 }
 
-// newLogger constructs a zap.Logger instance for current application.
+func pickLogger(v *viper.Viper) (*zap.Logger, zap.AtomicLevel) {
+	lvl, err := getLogLevel(v)
+	if err != nil {
+		panic(err)
+	}
+
+	dest := v.GetString(cfgLoggerDestination)
+
+	switch dest {
+	case destinationStdout:
+		return newStdoutLogger(v, lvl)
+	case destinationJournald:
+		return newJournaldLogger(v, lvl)
+	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 +447,59 @@ 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) {
-	lvl, err := getLogLevel(v)
-	if err != nil {
-		panic(err)
+func newStdoutLogger(v *viper.Viper, lvl zapcore.Level) (*zap.Logger, zap.AtomicLevel) {
+	stdout := zapcore.AddSync(os.Stderr)
+	level := zap.NewAtomicLevelAt(lvl)
+
+	consoleOutCore := zapcore.NewCore(newLogEncoder(), stdout, level)
+	consoleOutCore = samplingEnabling(v, consoleOutCore)
+
+	l := zap.New(consoleOutCore, zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel)))
+	return l, level
+}
+
+func newJournaldLogger(v *viper.Viper, lvl zapcore.Level) (*zap.Logger, zap.AtomicLevel) {
+	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 = samplingEnabling(v, coreWithContext)
+
+	l := zap.New(coreWithContext, zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel)))
+
+	return l, level
+}
+
+func newLogEncoder() zapcore.Encoder {
+	c := zap.NewProductionEncoderConfig()
+	c.EncodeTime = zapcore.ISO8601TimeEncoder
+
+	return zapcore.NewConsoleEncoder(c)
+}
+
+func samplingEnabling(v *viper.Viper, core zapcore.Core) zapcore.Core {
+	// Zap samples by logging the first cgfLoggerSamplingInitial entries with a given level
+	// and message within the specified time interval.
+	// In the above config, only the first cgfLoggerSamplingInitial log entries with the same level and message
+	// are recorded in cfgLoggerSamplingInterval interval. Every other log entry will be dropped within the interval since
+	// cfgLoggerSamplingThereafter is specified here.
+	if v.GetBool(cfgLoggerSamplingEnabled) {
+		core = zapcore.NewSamplerWithOptions(
+			core,
+			v.GetDuration(cfgLoggerSamplingInterval),
+			v.GetInt(cfgLoggerSamplingInitial),
+			v.GetInt(cfgLoggerSamplingThereafter),
+		)
 	}
 
-	c := zap.NewProductionConfig()
-	c.Level = zap.NewAtomicLevelAt(lvl)
-	c.Encoding = "console"
-	c.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
-
-	l, err := c.Build(
-		zap.AddStacktrace(zap.NewAtomicLevelAt(zap.FatalLevel)),
-	)
-	if err != nil {
-		panic(fmt.Sprintf("build zap logger instance: %v", err))
-	}
-
-	return l, c.Level
+	return core
 }
 
 func getLogLevel(v *viper.Viper) (zapcore.Level, error) {
@@ -385,8 +521,58 @@ 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 +587,18 @@ 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 +652,15 @@ func getPools(ctx context.Context, logger *zap.Logger, cfg *viper.Viper) (*pool.
 	prm.SetLogger(logger)
 	prmTree.SetLogger(logger)
 
-	var apiGRPCDialOpts []grpc.DialOption
-	var treeGRPCDialOpts []grpc.DialOption
-	if cfg.GetBool(cfgTracingEnabled) {
-		interceptors := []grpc.DialOption{
-			grpc.WithUnaryInterceptor(grpctracing.NewUnaryClientInteceptor()),
-			grpc.WithStreamInterceptor(grpctracing.NewStreamClientInterceptor()),
-		}
-		treeGRPCDialOpts = append(treeGRPCDialOpts, interceptors...)
-		apiGRPCDialOpts = append(apiGRPCDialOpts, interceptors...)
+	prmTree.SetMaxRequestAttempts(cfg.GetInt(cfgTreePoolMaxAttempts))
+
+	interceptors := []grpc.DialOption{
+		grpc.WithUnaryInterceptor(grpctracing.NewUnaryClientInteceptor()),
+		grpc.WithStreamInterceptor(grpctracing.NewStreamClientInterceptor()),
+		grpc.WithContextDialer(dialSource.GrpcContextDialer()),
 	}
-	prm.SetGRPCDialOptions(apiGRPCDialOpts...)
-	prmTree.SetGRPCDialOptions(treeGRPCDialOpts...)
+	prm.SetGRPCDialOptions(interceptors...)
+	prmTree.SetGRPCDialOptions(interceptors...)
 
 	p, err := pool.NewPool(prm)
 	if err != nil {
@@ -531,3 +719,99 @@ 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 +103,50 @@ 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

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 +113,59 @@ 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.
 
+# 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

docs/api.md

@@ -95,12 +95,12 @@ The `filename` field from the multipart form will be set as `FileName` attribute
 
 ## Get object
 
-Route: `/get/{cid}/{oid}?[download=true]`
+Route: `/get/{cid}/{oid}?[download=false]`
 
 | Route parameter | Type   | Description                                                                                                                                                |
 |-----------------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `cid`           | Single | Base58 encoded container ID or container name from NNS.                                                                                                    |
-| `oid`           | Single | Base58 encoded object ID.                                                                                                                                  |
+| `cid`           | Single | Base58 encoded `container ID` or `container name` from NNS or `bucket name`.                                                                               |
+| `oid`           | Single | Base58 encoded `object ID`. Also could be `S3 object name` if `cid` is specified as bucket name.                                                           |
 | `download`      | Query  | Set the `Content-Disposition` header as `attachment` in response.<br/> This make the browser to download object as file instead of showing it on the page. |
 
 ### Methods
@@ -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/gate-configuration.md

@@ -40,20 +40,25 @@ $ cat http.log
 
 # Structure
 
-| Section         | Description                                           |
-|-----------------|-------------------------------------------------------|
-| no section      | [General parameters](#general-section)                |
-| `wallet`        | [Wallet configuration](#wallet-section)               |
-| `peers`         | [Nodes configuration](#peers-section)                 |
-| `logger`        | [Logger configuration](#logger-section)               |
-| `web`           | [Web configuration](#web-section)                     |
-| `server`        | [Server configuration](#server-section)               |
-| `upload-header` | [Upload header configuration](#upload-header-section) |
-| `zip`           | [ZIP configuration](#zip-section)                     |
-| `pprof`         | [Pprof configuration](#pprof-section)                 |
-| `prometheus`    | [Prometheus configuration](#prometheus-section)       |
-| `tracing`       | [Tracing configuration](#tracing-section)             |
-| `runtime`       | [Runtime configuration](#runtime-section)             |
+| Section          | Description                                                    |
+|------------------|----------------------------------------------------------------|
+| no section       | [General parameters](#general-section)                         |
+| `wallet`         | [Wallet configuration](#wallet-section)                        |
+| `peers`          | [Nodes configuration](#peers-section)                          |
+| `logger`         | [Logger configuration](#logger-section)                        |
+| `web`            | [Web configuration](#web-section)                              |
+| `server`         | [Server configuration](#server-section)                        |
+| `upload-header`  | [Upload header configuration](#upload-header-section)          |
+| `zip`            | [ZIP configuration](#zip-section)                              |
+| `pprof`          | [Pprof configuration](#pprof-section)                          |
+| `prometheus`     | [Prometheus configuration](#prometheus-section)                |
+| `tracing`        | [Tracing configuration](#tracing-section)                      |
+| `runtime`        | [Runtime configuration](#runtime-section)                      |
+| `frostfs`        | [Frostfs configuration](#frostfs-section)                      |
+| `cache`          | [Cache configuration](#cache-section)                          |
+| `resolve_bucket` | [Bucket name resolving configuration](#resolve_bucket-section) |
+| `index_page`     | [Index page configuration](#index_page-section)                |
+| `multinet`       | [Multinet configuration](#multinet-section)                    |
 
 
 # General section
@@ -69,17 +74,19 @@ stream_timeout: 10s
 request_timeout: 5s
 rebalance_timer: 30s
 pool_error_threshold: 100
+reconnect_interval: 1m
 ```
 
-| Parameter              | Type       | SIGHUP reload | Default value  | Description                                                                        |
-|------------------------|------------|---------------|----------------|------------------------------------------------------------------------------------|
-| `rpc_endpoint`         | `string`   | yes           |                | The address of the RPC host to which the gateway connects to resolve bucket names. |
-| `resolve_order`        | `[]string` | yes           | `[nns, dns]`   | Order of bucket name resolvers to use.                                             |
-| `connect_timeout`      | `duration` |               | `10s`          | Timeout to connect to a node.                                                      |
-| `stream_timeout`       | `duration` |               | `10s`          | Timeout for individual operations in streaming RPC.                                |
-| `request_timeout`      | `duration` |               | `15s`          | Timeout to check node health during rebalance.                                     |
-| `rebalance_timer`      | `duration` |               | `60s`          | Interval to check node health.                                                     |
-| `pool_error_threshold` | `uint32`   |               | `100`          | The number of errors on connection after which node is considered as unhealthy.    |
+| Parameter              | Type       | SIGHUP reload | Default value | Description                                                                                     |
+|------------------------|------------|---------------|---------------|-------------------------------------------------------------------------------------------------|
+| `rpc_endpoint`         | `string`   | yes           |               | The address of the RPC host to which the gateway connects to resolve bucket names.              |
+| `resolve_order`        | `[]string` | yes           | `[nns, dns]`  | Order of bucket name resolvers to use.                                                          |
+| `connect_timeout`      | `duration` |               | `10s`         | Timeout to connect to a node.                                                                   |
+| `stream_timeout`       | `duration` |               | `10s`         | Timeout for individual operations in streaming RPC.                                             |
+| `request_timeout`      | `duration` |               | `15s`         | Timeout to check node health during rebalance.                                                  |
+| `rebalance_timer`      | `duration` |               | `60s`         | Interval to check node health.                                                                  |
+| `pool_error_threshold` | `uint32`   |               | `100`         | The number of errors on connection after which node is considered as unhealthy.                 |
+| `reconnect_interval`   | `duration` | no            | `1m`          | Listeners reconnection interval.                                                                |
 
 # `wallet` section
 
@@ -158,12 +165,22 @@ server:
 ```yaml
 logger:
   level: debug
+  destination: stdout
+  sampling:
+    enabled: false
+    initial: 100
+    thereafter: 100
+    interval: 1s
 ```
 
-| Parameter | Type     | SIGHUP reload | Default value | Description                                                                                        |
-|-----------|----------|---------------|---------------|----------------------------------------------------------------------------------------------------|
-| `level`   | `string` | yes           | `debug`       | Logging level.<br/>Possible values:  `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. |
-
+| Parameter             | Type       | SIGHUP reload | Default value | Description                                                                                        |
+|-----------------------|------------|---------------|---------------|----------------------------------------------------------------------------------------------------|
+| `level`               | `string`   | yes           | `debug`       | Logging level.<br/>Possible values:  `debug`, `info`, `warn`, `error`, `dpanic`, `panic`, `fatal`. |
+| `destination`         | `string`   | no            | `stdout`      | Destination for logger: `stdout` or `journald`                                                     |
+| `sampling.enabled`    | `bool`     | no            | false         | Sampling enabling flag.                                                                            |
+| `sampling.initial`    | `int`      | no            | '100'         | Sampling count of first log entries.                                                               |
+| `sampling.thereafter` | `int`      | no            | '100'         | Sampling count of entries after an `interval`.                                                     |
+| `sampling.interval`   | `duration` | no            | '1s'          | Sampling interval of messaging similar entries.                                                    |
 
 # `web` section
 
@@ -250,13 +267,37 @@ 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.             |
+| 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.
@@ -268,4 +309,143 @@ 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. |
+| `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 with S3-bucket or S3-subdir content for `Get object` request
+
+```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. |

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 v2.16.1-0.20231121085847-241a9f1ad0a4
-	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6
+	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20241011114054-f0fc40e116d1
+	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241022124111-5361f0ecebd3
+	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/prometheus/client_golang v1.15.1
-	github.com/prometheus/client_model v0.3.0
+	github.com/nspcc-dev/neo-go v0.106.2
+	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/trace v1.16.0
-	go.uber.org/zap v1.24.0
-	google.golang.org/grpc v1.55.0
+	go.opentelemetry.io/otel v1.28.0
+	go.opentelemetry.io/otel/trace v1.28.0
+	go.uber.org/zap v1.27.0
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842
+	golang.org/x/net v0.26.0
+	golang.org/x/sys v0.22.0
+	google.golang.org/grpc v1.66.2
 )
 
 require (
-	git.frostfs.info/TrueCloudLab/frostfs-contract v0.0.0-20230307110621-19a8ef2d02fb // indirect
+	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e // indirect
 	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 // indirect
 	git.frostfs.info/TrueCloudLab/hrw v1.2.1 // 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/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/containerd/cgroups v1.0.3 // indirect
 	github.com/containerd/containerd v1.6.2 // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // 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/google/uuid v1.3.0 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
-	github.com/gorilla/websocket v1.5.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.15.2 // indirect
-	github.com/hashicorp/golang-lru v0.6.0 // indirect
-	github.com/hashicorp/golang-lru/v2 v2.0.2 // indirect
+	github.com/gorilla/websocket v1.5.1 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/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/neo-go/pkg/interop v0.0.0-20230615193820-9185820289ce // indirect
-	github.com/nspcc-dev/rfc6979 v0.2.0 // indirect
+	github.com/nspcc-dev/go-ordered-json v0.0.0-20240301084351-0246b013f8b2 // indirect
+	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20240521091047-78685785716d // indirect
+	github.com/nspcc-dev/rfc6979 v0.2.1 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2 // indirect
 	github.com/opencontainers/runc v1.1.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/common v0.42.0 // indirect
-	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/prometheus/common v0.48.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/savsgio/gotils v0.0.0-20210617111740-97865ed5a873 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
@@ -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 v1.16.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.16.0 // indirect
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.16.0 // indirect
-	go.opentelemetry.io/otel/metric v1.16.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.16.0 // indirect
-	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
-	go.uber.org/atomic v1.10.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0 // indirect
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/metric v1.28.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.28.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.9.0 // indirect
-	golang.org/x/exp v0.0.0-20230515195305-f3d0a9c9a5cc // indirect
-	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/sync v0.2.0 // 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/crypto v0.24.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -37,22 +37,26 @@ 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 v2.16.1-0.20231121085847-241a9f1ad0a4 h1:wjLfZ3WCt7qNGsQv+Jl0TXnmtg0uVk/jToKPFTBc/jo=
-git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20231121085847-241a9f1ad0a4/go.mod h1:uY0AYmCznjZdghDnAk7THFIe1Vlg531IxUcus7ZfUJI=
-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-api-go/v2 v2.16.1-0.20241011114054-f0fc40e116d1 h1:ivcdxQeQDnx4srF2ezoaeVlF0FAycSAztwfIUJnUI4s=
+git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20241011114054-f0fc40e116d1/go.mod h1:F5GS7hRb62PUy5sTYDC4ajVdeffoAfjHSSHTKUJEaYU=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e h1:kcBqZBiFIUBATUqEuvVigtkJJWQ2Gug/eYXn967o3M4=
+git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e/go.mod h1:F/fe1OoIDKr5Bz99q4sriuHDuf3aZefZy9ZsCqEtgxc=
 git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0 h1:FxqFDhQYYgpe41qsIHVOcdzSVCB8JNSfPG7Uk4r2oSk=
 git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0/go.mod h1:RUIKZATQLJ+TaYQa60X2fTDwfuhMfm8Ar60bQ5fr+vU=
-git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6 h1:aGQ6QaAnTerQ5Dq5b2/f9DUQtSqPkZZ/bkMx/HKuLCo=
-git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6/go.mod h1:W8Nn08/l6aQ7UlIbpF7FsQou7TVpcRD1ZT1KG4TrFhE=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6 h1:u6lzNotV6MEMNEG/XeS7g+FjPrrf+j4gnOHtvun2KJc=
-git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20230802103237-363f153eafa6/go.mod h1:LI2GOj0pEx0jYTjB3QHja2PNhQFYL2pCm71RAFwDv0M=
+git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88 h1:9bvBDLApbbO5sXBKdODpE9tzy3HV99nXxkDWNn22rdI=
+git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20241112082307-f17779933e88/go.mod h1:kbwB4v2o6RyOfCo9kEFeUDZIX3LKhmS0yXPrtvzkQ1g=
+git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241022124111-5361f0ecebd3 h1:f7jan6eBDN88DKnKj8GKyWpfjBbSzjDALcDejYKRgCs=
+git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241022124111-5361f0ecebd3/go.mod h1:3txOjFJ8M/JFs01h7xOrnQHVn6hZgDNA16ivyUlu1iU=
 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=
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@@ -298,8 +280,8 @@ github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfc
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@@ -310,13 +292,11 @@ github.com/d2g/dhcp4 v0.0.0-20170904100407-a1d1b6c41b1c/go.mod h1:Ct2BUK8SB0YC1S
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@@ -356,20 +336,16 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
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@@ -384,17 +360,13 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
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@@ -408,13 +380,11 @@ github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8
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@@ -431,8 +401,6 @@ github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXP
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@@ -447,7 +415,6 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -465,14 +432,9 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
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@@ -487,8 +449,8 @@ github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -511,8 +473,9 @@ github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
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@@ -526,8 +489,8 @@ github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB7
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@@ -535,23 +498,20 @@ github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgf
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@@ -562,31 +522,24 @@ github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH
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@@ -601,8 +554,8 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
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@@ -617,23 +570,18 @@ github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN
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@@ -642,6 +590,8 @@ github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh
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@@ -659,74 +609,49 @@ github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJ
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@@ -814,16 +730,14 @@ github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+Gx
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@@ -848,7 +762,6 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
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@@ -871,6 +784,8 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
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@@ -888,15 +803,13 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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@@ -904,7 +817,8 @@ github.com/testcontainers/testcontainers-go v0.13.0 h1:OUujSlEGsXVo/ykPVZk3KanBN
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@@ -920,8 +834,6 @@ github.com/valyala/fasthttp v1.28.0/go.mod h1:cmWIqlu99AO/RKcp1HWaViTqc57FswJOfY
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@@ -940,17 +852,15 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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@@ -961,43 +871,34 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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 golang.org/x/crypto v0.0.0-20171113213409-9f005a07e0d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181009213950-7c1a557ab941/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -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=
 golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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+golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
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@@ -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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@@ -1056,8 +954,8 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -1105,15 +1003,12 @@ golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v
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@@ -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=
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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
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -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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@@ -1226,37 +1111,32 @@ golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7w
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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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@@ -1403,9 +1283,10 @@ google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6D
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+google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094/go.mod h1:fJ/e3If/Q67Mj99hin0hMhiNyCRmt6BQ2aWIJshUSJw=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 h1:BwIjyKYGsK9dMCBOorzRri8MQwmi7mT9rGHsCEinZkA=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094/go.mod h1:Ue6ibwXGpU+dqIcODieyLOcgj7z8+IcskoNIgZxtrFY=
 google.golang.org/grpc v0.0.0-20160317175043-d3ddb4469d5a/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
@@ -1429,10 +1310,8 @@ google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA5
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.41.0/go.mod h1:U3l9uK9J0sini8mHphKoXyaqDA/8VyGnDee1zzIUK6k=
-google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
-google.golang.org/grpc v1.55.0 h1:3Oj82/tFSCeUrRTg/5E/7d/W5A1tj6Ky1ABAuZuv5ag=
-google.golang.org/grpc v1.55.0/go.mod h1:iYEXKGkEBhg1PjZQvoYEVPTDkHo1/bjTnfwTeGONTY8=
+google.golang.org/grpc v1.66.2 h1:3QdXkuq3Bkh7w+ywLdLvM56cmGvQHUMZpiCzt6Rqaoo=
+google.golang.org/grpc v1.66.2/go.mod h1:s3/l6xSSCURdVfAnL+TqCNMyTDAGN6+lZeVxnZR128Y=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1446,10 +1325,8 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng=
-google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/abiosoft/ishell.v2 v2.0.0/go.mod h1:sFp+cGtH6o4s1FtpVPTMcHq2yue+c4DGOVohJCPUzwY=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -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=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 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=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -1470,6 +1348,7 @@ gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/square/go-jose.v2 v2.3.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
 gopkg.in/square/go-jose.v2 v2.5.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -1479,6 +1358,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
@@ -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/api/tree.go

@@ -8,6 +8,7 @@ import (
 type NodeVersion struct {
 	BaseNodeVersion
 	DeleteMarker bool
+	IsPrefixNode bool
 }
 
 // BaseNodeVersion is minimal node info from tree service.

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/bucket.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/handler/browse.go

@@ -0,0 +1,159 @@
+package handler
+
+import (
+	"html/template"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"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"
+	attrSize     = "Size"
+)
+
+type (
+	BrowsePageData struct {
+		BucketName,
+		Prefix string
+		Objects []ResponseObject
+	}
+	ResponseObject struct {
+		OID      string
+		Created  string
+		FileName string
+		Size     string
+		IsDir    bool
+	}
+)
+
+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 NewResponseObject(nodes map[string]string) ResponseObject {
+	return ResponseObject{
+		OID:      nodes[attrOID],
+		Created:  nodes[attrCreated],
+		FileName: nodes[attrFileName],
+		Size:     nodes[attrSize],
+		IsDir:    nodes[attrOID] == "",
+	}
+}
+
+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(prefix, filename string) string {
+	var res strings.Builder
+	path := filename
+	if prefix != "" {
+		path = strings.Join([]string{prefix, filename}, "/")
+	}
+	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()
+}
+
+func (h *Handler) browseObjects(c *fasthttp.RequestCtx, bucketInfo *data.BucketInfo, prefix string) {
+	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(zap.String("bucket", bucketInfo.Name))
+
+	nodes, err := h.listObjects(ctx, bucketInfo, prefix)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	respObjects := make([]ResponseObject, len(nodes))
+
+	for i, node := range nodes {
+		respObjects[i] = NewResponseObject(node)
+	}
+
+	sort.Slice(respObjects, func(i, j int) bool {
+		if respObjects[i].IsDir == respObjects[j].IsDir {
+			return respObjects[i].FileName < respObjects[j].FileName
+		}
+		return respObjects[i].IsDir
+	})
+	indexTemplate := h.config.IndexPageTemplate()
+
+	tmpl, err := template.New("index").Funcs(template.FuncMap{
+		"formatTimestamp": formatTimestamp,
+		"formatSize":      formatSize,
+		"trimPrefix":      trimPrefix,
+		"urlencode":       urlencode,
+		"parentDir":       parentDir,
+	}).Parse(indexTemplate)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	if err = tmpl.Execute(c, &BrowsePageData{
+		BucketName: bucketInfo.Name,
+		Prefix:     prefix,
+		Objects:    respObjects,
+	}); err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+}

internal/handler/download.go

@@ -14,12 +14,9 @@ import (
 	"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"
 )
@@ -30,7 +27,7 @@ func (h *Handler) DownloadByAddressOrBucketName(c *fasthttp.RequestCtx) {
 	var id oid.ID
 	err := id.DecodeString(test)
 	if err != nil {
-		h.byBucketname(c, h.receiveFile)
+		h.byObjectName(c, h.receiveFile)
 	} else {
 		h.byAddress(c, h.receiveFile)
 	}
@@ -48,31 +45,25 @@ 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.SetContainerID(*cid)
-	prm.SetFilters(filters)
-	if btoken := bearerToken(ctx); btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectSearch{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Container: *cnrID,
+		Filters:   filters,
 	}
 
-	return h.pool.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)
+	return h.frostfs.SearchObjects(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 +82,27 @@ 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))
-	log := h.log.With(zap.String("cid", scid), zap.String("prefix", prefix))
+	prefix, _ := c.UserValue("prefix").(string)
 
 	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))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("prefix", prefix), zap.Error(err))
+		response.Error(c, "could not unescape prefix: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
-	// check if container exists here to be able to return 404 error,
-	// otherwise we get this error only in object iteration step
-	// and client get 200 OK.
-	if _, err = h.getContainer(ctx, *containerID); err != nil {
-		log.Error(logs.CouldNotCheckContainerExistence, zap.Error(err))
-		if client.IsErrContainerNotFound(err) {
-			response.Error(c, "Not Found", fasthttp.StatusNotFound)
-			return
-		}
-		response.Error(c, "could not check container existence: "+err.Error(), fasthttp.StatusBadRequest)
+	log = log.With(zap.String("cid", scid), zap.String("prefix", prefix))
+
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
 		return
 	}
 
-	resSearch, err := h.search(ctx, 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 +124,7 @@ 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 +154,14 @@ 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.SetAddress(addr)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectGet{
+		PrmAuth: PrmAuth{
+			BearerToken: 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

@@ -3,92 +3,203 @@ 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/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/valyala/fasthttp"
 	"go.uber.org/zap"
 )
 
+type Config interface {
+	DefaultTimestamp() bool
+	ZipCompression() bool
+	ClientCut() bool
+	IndexPageEnabled() bool
+	IndexPageTemplate() string
+	BufferMaxSizeForPut() uint64
+	NamespaceHeader() string
+}
+
+// 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
-	containerResolver *resolver.ContainerResolver
+	config            Config
+	containerResolver ContainerResolver
 	tree              *tree.Tree
+	cache             *cache.BucketCache
 }
 
-// Settings stores reloading parameters, so it has to provide atomic getters and setters.
-type Settings struct {
-	defaultTimestamp atomic.Bool
-	zipCompression   atomic.Bool
+type AppParams struct {
+	Logger   *zap.Logger
+	FrostFS  FrostFS
+	Owner    *user.ID
+	Resolver ContainerResolver
+	Cache    *cache.BucketCache
 }
 
-func (s *Settings) DefaultTimestamp() bool {
-	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 {
+func New(params *AppParams, config Config, 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,
 	}
 }
 
-// getContainerID decode container id, if it's not a valid container id
-// 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)) {
-	var (
-		idCnr, _ = c.UserValue("cid").(string)
-		idObj, _ = c.UserValue("oid").(string)
-		log      = h.log.With(zap.String("cid", idCnr), zap.String("oid", idObj))
-	)
+	idCnr, _ := c.UserValue("cid").(string)
+	idObj, _ := c.UserValue("oid").(string)
 
 	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(zap.String("cid", idCnr), zap.String("oid", idObj))
 
-	cnrID, err := h.getContainerID(ctx, idCnr)
+	bktInfo, err := h.getBucketInfo(ctx, idCnr, log)
 	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
+		logAndSendBucketError(c, log, err)
 		return
 	}
 
@@ -99,69 +210,95 @@ func (h *Handler) byAddress(c *fasthttp.RequestCtx, f func(context.Context, requ
 		return
 	}
 
-	var addr oid.Address
-	addr.SetContainer(*cnrID)
-	addr.SetObject(*objID)
+	addr := newAddress(bktInfo.CID, *objID)
 
 	f(ctx, *h.newRequest(c, log), addr)
 }
 
-// byBucketname is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+// byObjectName is a wrapper for function (e.g. request.headObject, request.receiveFile) that
 // prepares request and object address to it.
-func (h *Handler) byBucketname(req *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
-	var (
-		bucketname = req.UserValue("cid").(string)
-		key        = req.UserValue("oid").(string)
-		log        = h.log.With(zap.String("bucketname", bucketname), zap.String("key", key))
-	)
+func (h *Handler) byObjectName(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+	bucketname := c.UserValue("cid").(string)
+	key := c.UserValue("oid").(string)
+	download := c.QueryArgs().GetBool("download")
 
-	ctx := utils.GetContextFromRequest(req)
+	ctx := utils.GetContextFromRequest(c)
+	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
+	log := reqLog.With(zap.String("bucketname", bucketname), zap.String("key", key))
 
-	cnrID, err := h.getContainerID(ctx, bucketname)
+	unescapedKey, err := url.QueryUnescape(key)
 	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
-		response.Error(req, "wrong container id", fasthttp.StatusBadRequest)
+		logAndSendBucketError(c, log, err)
 		return
 	}
 
-	foundOid, err := h.tree.GetLatestVersion(ctx, cnrID, key)
+	bktInfo, err := h.getBucketInfo(ctx, bucketname, log)
 	if err != nil {
-		log.Error(logs.ObjectWasntFound, zap.Error(err))
-		response.Error(req, "object wasn't found", fasthttp.StatusNotFound)
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	foundOid, err := h.tree.GetLatestVersion(ctx, &bktInfo.CID, unescapedKey)
+	if h.config.IndexPageEnabled() && !download && string(c.Method()) != fasthttp.MethodHead {
+		if isDir(unescapedKey) || isContainerRoot(unescapedKey) {
+			if code := checkErrorType(err); code == fasthttp.StatusNotFound || code == fasthttp.StatusOK {
+				c.SetStatusCode(code)
+				h.browseObjects(c, bktInfo, unescapedKey)
+				return
+			}
+		}
+	}
+	if err != nil {
+		if errors.Is(err, tree.ErrNodeAccessDenied) {
+			response.Error(c, "Access Denied", fasthttp.StatusForbidden)
+		} else {
+			response.Error(c, "object wasn't found", fasthttp.StatusNotFound)
+			log.Error(logs.GetLatestObjectVersion, zap.Error(err))
+		}
 		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(bktInfo.CID, foundOid.OID)
 
-	var addr oid.Address
-	addr.SetContainer(*cnrID)
-	addr.SetObject(foundOid.OID)
-
-	f(ctx, *h.newRequest(req, log), addr)
+	f(ctx, *h.newRequest(c, log), addr)
 }
 
 // byAttribute is a wrapper similar to byAddress.
 func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
-	var (
-		scid, _ = c.UserValue("cid").(string)
-		key, _  = url.QueryUnescape(c.UserValue("attr_key").(string))
-		val, _  = url.QueryUnescape(c.UserValue("attr_val").(string))
-		log     = h.log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
-	)
+	scid, _ := 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)
 
-	containerID, err := h.getContainerID(ctx, scid)
+	key, err := url.QueryUnescape(key)
 	if err != nil {
-		log.Error(logs.WrongContainerID, zap.Error(err))
-		response.Error(c, "wrong container id", fasthttp.StatusBadRequest)
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("attr_key", key), zap.Error(err))
+		response.Error(c, "could not unescape attr_key: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
-	res, err := h.search(ctx, containerID, key, val, object.MatchStringEqual)
+	val, err = url.QueryUnescape(val)
+	if err != nil {
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), 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", scid), zap.String("attr_key", key), zap.String("attr_val", val))
+
+	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	res, err := h.search(ctx, &bktInfo.CID, 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)
@@ -186,8 +323,96 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, re
 	}
 
 	var addrObj oid.Address
-	addrObj.SetContainer(*containerID)
+	addrObj.SetContainer(bktInfo.CID)
 	addrObj.SetObject(buf[0])
 
 	f(ctx, *h.newRequest(c, log), addrObj)
 }
+
+// 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) listObjects(ctx context.Context, bucketInfo *data.BucketInfo, prefix string) ([]map[string]string, error) {
+	nodes, _, err := h.tree.GetSubTreeByPrefix(ctx, bucketInfo, prefix, true)
+	if err != nil {
+		return nil, err
+	}
+
+	var objects = make([]map[string]string, 0, len(nodes))
+	for _, node := range nodes {
+		meta := node.GetMeta()
+		if meta == nil {
+			continue
+		}
+		var obj = make(map[string]string, len(meta))
+		for _, m := range meta {
+			obj[m.GetKey()] = string(m.GetValue())
+		}
+		objects = append(objects, obj)
+	}
+
+	return objects, nil
+}

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 +1,312 @@
+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/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
+	"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/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type treeClientMock struct {
+}
+
+func (t *treeClientMock) GetNodes(context.Context, *tree.GetNodesParams) ([]tree.NodeResponse, error) {
+	return nil, nil
+}
+
+func (t *treeClientMock) GetSubTree(context.Context, *data.BucketInfo, string, []uint64, uint32, bool) ([]tree.NodeResponse, error) {
+	return nil, nil
+}
+
+type configMock struct {
+}
+
+func (c *configMock) DefaultTimestamp() bool {
+	return false
+}
+
+func (c *configMock) ZipCompression() bool {
+	return false
+}
+
+func (c *configMock) IndexPageEnabled() bool {
+	return false
+}
+
+func (c *configMock) IndexPageTemplatePath() string {
+	return ""
+}
+func (c *configMock) IndexPageTemplate() string {
+	return ""
+}
+
+func (c *configMock) ClientCut() bool {
+	return false
+}
+
+func (c *configMock) BufferMaxSizeForPut() uint64 {
+	return 0
+}
+
+func (c *configMock) NamespaceHeader() string {
+	return ""
+}
+
+type handlerContext struct {
+	key   *keys.PrivateKey
+	owner user.ID
+
+	h       *Handler
+	frostfs *TestFrostFS
+	tree    *treeClientMock
+	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 := &treeClientMock{}
+	cfgMock := &configMock{}
+
+	handler := New(params, cfgMock, tree.NewTree(treeMock))
+
+	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 := object.NewAttribute()
+	attr.SetKey(object.AttributeFilePath)
+	attr.SetValue(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 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
+}
+
+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

@@ -11,7 +11,6 @@ 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"
 )
@@ -30,13 +29,14 @@ func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid
 
 	btoken := bearerToken(ctx)
 
-	var prm pool.PrmObjectHead
-	prm.SetAddress(objectAddress)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectHead{
+		PrmAuth: PrmAuth{
+			BearerToken: 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 +70,19 @@ 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.SetAddress(objectAddress)
-			prmRange.SetLength(sz)
-			if btoken != nil {
-				prmRange.UseBearer(*btoken)
+			prmRange := PrmObjectRange{
+				PrmAuth: PrmAuth{
+					BearerToken: btoken,
+				},
+				Address:      objectAddress,
+				PayloadRange: [2]uint64{0, sz},
 			}
 
-			resObj, err := h.pool.ObjectRange(ctx, prmRange)
-			if err != nil {
-				return nil, err
-			}
-			return &resObj, nil
+			return h.frostfs.RangeObject(ctx, prmRange)
 		})
 		if err != nil && err != io.EOF {
 			req.handleFrostFSErr(err, start)
@@ -110,7 +107,7 @@ func (h *Handler) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
 
 	err := id.DecodeString(test)
 	if err != nil {
-		h.byBucketname(c, h.headObject)
+		h.byObjectName(c, h.headObject)
 	} else {
 		h.byAddress(c, h.headObject)
 	}

internal/handler/middleware/util.go

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

internal/handler/multipart.go

@@ -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
-		dis      = "inline"
-		start    = time.Now()
-		filename string
+		shouldDownload = req.QueryArgs().GetBool("download")
+		start          = time.Now()
+		filename       string
+		filepath       string
+		contentType    string
 	)
 
-	var prm pool.PrmObjectGet
-	prm.SetAddress(objectAddress)
-	if btoken := bearerToken(ctx); btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectGet{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		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?
-
-	if req.Request.URI().QueryArgs().GetBool("download") {
-		dis = "attachment"
-	}
-
+	req.setIDs(rObj.Header)
+	payload := rObj.Payload
 	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 != nil {
-				req.log.Info(logs.CouldntParseCreationDate,
-					zap.String("key", key),
+			if err = req.setTimestamp(val); err != nil {
+				req.log.Error(logs.CouldntParseCreationDate,
 					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.Header.Set(fasthttp.HeaderContentDisposition, dis+"; filename="+path.Base(filename))
-
-	req.Response.SetBodyStream(rObj.Payload, int(payloadSize))
+	req.Response.SetBodyStream(payload, int(payloadSize))
+}
+
+func (r *request) setIDs(obj object.Object) {
+	objID, _ := obj.ID()
+	cnrID, _ := obj.ContainerID()
+	r.Response.Header.Set(hdrObjectID, objID.String())
+	r.Response.Header.Set(hdrOwnerID, obj.OwnerID().String())
+	r.Response.Header.Set(hdrContainerID, cnrID.String())
+}
+
+func (r *request) setDisposition(shouldDownload bool, filename string) {
+	const (
+		inlineDisposition     = "inline"
+		attachmentDisposition = "attachment"
+	)
+
+	dis := inlineDisposition
+	if shouldDownload {
+		dis = attachmentDisposition
+	}
+
+	r.Response.Header.Set(fasthttp.HeaderContentDisposition, dis+"; filename="+path.Base(filename))
+}
+
+func (r *request) setTimestamp(timestamp string) error {
+	value, err := strconv.ParseInt(timestamp, 10, 64)
+	if err != nil {
+		return err
+	}
+	r.Response.Header.Set(fasthttp.HeaderLastModified,
+		time.Unix(value, 0).UTC().Format(http.TimeFormat))
+
+	return nil
 }

internal/handler/reader_test.go

@@ -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)
+		file  MultipartFile
+		idObj oid.ID
+		addr  oid.Address
 	)
 
-	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))
-		response.Error(req, "wrong container id", fasthttp.StatusBadRequest)
+		logAndSendBucketError(c, log, err)
 		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.SetOwnerID(h.ownerID)
+	obj.SetContainerID(bktInfo.CID)
+	obj.SetOwnerID(*h.ownerID)
 	obj.SetAttributes(attributes...)
 
-	var prm pool.PrmObjectPut
-	prm.SetHeader(*obj)
-	prm.SetPayload(file)
-
-	bt := h.fetchBearerToken(ctx)
-	if bt != nil {
-		prm.UseBearer(*bt)
+	prm := PrmObjectCreate{
+		PrmAuth: PrmAuth{
+			BearerToken: h.fetchBearerToken(ctx),
+		},
+		Object:                 obj,
+		Payload:                file,
+		ClientCut:              h.config.ClientCut(),
+		WithoutHomomorphicHash: bktInfo.HomomorphicHashDisabled,
+		BufferMaxSize:          h.config.BufferMaxSizeForPut(),
 	}
 
-	if idObj, err = h.pool.PutObject(ctx, prm); err != nil {
-		h.handlePutFrostFSErr(req, err)
+	if idObj, err = h.frostfs.CreateObject(ctx, prm); err != nil {
+		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)
-	req.Response.Header.SetContentType(jsonHeader)
+	c.Response.SetStatusCode(fasthttp.StatusOK)
+	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

@@ -2,13 +2,18 @@ package handler
 
 import (
 	"context"
+	"errors"
 	"strings"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tokens"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"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"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -37,6 +42,25 @@ func bearerToken(ctx context.Context) *bearer.Token {
 	return nil
 }
 
+func isDir(name string) bool {
+	return strings.HasSuffix(name, "/")
+}
+
+func isContainerRoot(key string) bool {
+	return key == ""
+}
+
+func checkErrorType(err error) int {
+	switch {
+	case err == nil:
+		return fasthttp.StatusOK
+	case errors.Is(err, tree.ErrNodeAccessDenied):
+		return fasthttp.StatusForbidden
+	default:
+		return fasthttp.StatusNotFound
+	}
+}
+
 func isValidToken(s string) bool {
 	for _, c := range s {
 		if c <= ' ' || c > 127 {
@@ -58,3 +82,20 @@ 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/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 +31,8 @@ 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
+	FailedToReadIndexPageTemplate                                         = "failed to read index page template, set default"                                        // Warn 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 +69,18 @@ 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
+	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"
+	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"
 )

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/pool_wrapper.go

@@ -1,10 +1,12 @@
-package services
+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"
 	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
@@ -15,16 +17,16 @@ type GetNodeByPathResponseInfoWrapper struct {
 	response *grpcService.GetNodeByPathResponse_Info
 }
 
-func (n GetNodeByPathResponseInfoWrapper) GetNodeID() uint64 {
-	return n.response.GetNodeId()
+func (n GetNodeByPathResponseInfoWrapper) GetNodeID() []uint64 {
+	return []uint64{n.response.GetNodeId()}
 }
 
-func (n GetNodeByPathResponseInfoWrapper) GetParentID() uint64 {
-	return n.response.GetParentId()
+func (n GetNodeByPathResponseInfoWrapper) GetParentID() []uint64 {
+	return []uint64{n.response.GetParentId()}
 }
 
-func (n GetNodeByPathResponseInfoWrapper) GetTimestamp() uint64 {
-	return n.response.GetTimestamp()
+func (n GetNodeByPathResponseInfoWrapper) GetTimestamp() []uint64 {
+	return []uint64{n.response.GetTimestamp()}
 }
 
 func (n GetNodeByPathResponseInfoWrapper) GetMeta() []tree.Meta {
@@ -35,30 +37,6 @@ func (n GetNodeByPathResponseInfoWrapper) GetMeta() []tree.Meta {
 	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
 }
@@ -113,3 +91,73 @@ func handleError(err error) 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 *grpcService.GetSubTreeResponse_Body
+}
+
+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.Meta))
+	for i, value := range n.response.Meta {
+		res[i] = value
+	}
+	return res
+}

internal/templates/index.gotmpl

@@ -0,0 +1,90 @@
+{{$bucketName := .BucketName}}
+{{ $prefix := trimPrefix .Prefix }}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>Index of s3://{{$bucketName}}/{{if $prefix}}/{{$prefix}}/{{end}}</title>
+    <style>
+        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;
+        }
+        tr:nth-child(even) {background-color: #ebe7e7;}
+    </style>
+</head>
+<body>
+<h1>Index of s3://{{$bucketName}}/{{if $prefix}}{{$prefix}}/{{end}}</h1>
+<table>
+    <thead>
+    <tr>
+        <th>Filename</th>
+        <th>Size</th>
+        <th>Created</th>
+        <th>Download</th>
+    </tr>
+    </thead>
+    <tbody>
+    {{ $trimmedPrefix := trimPrefix $prefix }}
+    {{if $trimmedPrefix }}
+        <tr>
+            <td>
+                ⮐<a href="/get/{{$bucketName}}{{ urlencode $trimmedPrefix "" }}">..</a>
+            </td>
+            <td></td>
+            <td></td>
+            <td></td>
+        </tr>
+    {{else}}
+        <tr>
+            <td>
+                ⮐<a href="/get/{{ $bucketName }}/">..</a>
+            </td>
+            <td></td>
+            <td></td>
+            <td></td>
+        </tr>
+    {{end}}
+    {{range .Objects}}
+        <tr>
+            <td>
+                {{if .IsDir}}
+                    🗀
+                    <a href="/get/{{ $bucketName }}{{ urlencode $prefix .FileName }}/">
+                        {{.FileName}}/
+                    </a>
+                {{else}}
+                    🗎
+                    <a href="/get/{{ $bucketName }}{{ urlencode $prefix .FileName }}">
+                        {{.FileName}}
+                    </a>
+                {{end}}
+            </td>
+            <td>{{if not .IsDir}}{{ formatSize .Size }}{{end}}</td>
+            <td>{{if not .IsDir}}{{ formatTimestamp .Created }}{{end}}</td>
+            <td>
+                {{ if not .IsDir }}
+                    <a href="/get/{{ $bucketName}}{{ urlencode $prefix .FileName }}?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/metrics.go

@@ -191,8 +191,6 @@ 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, fmt.Errorf("read system DNS parameter of the FrostFS: %w", err)
+			return nil, err
 		}
 
-		domain = name + "." + domain
+		zone, isDefault := settings.FormContainerZone(namespace)
+		if isDefault {
+			zone, err = frostFS.SystemDNS(ctx)
+			if err != nil {
+				return nil, fmt.Errorf("read system DNS parameter of the FrostFS: %w", err)
+			}
+		}
+
+		domain := name + "." + zone
 		cnrID, err := dns.ResolveContainerName(domain)
+
 		if err != nil {
 			return nil, fmt.Errorf("couldn't resolve container '%s' as '%s': %w", name, domain, err)
 		}
@@ -170,17 +190,32 @@ func NewDNSResolver(frostFS FrostFS) (*Resolver, error) {
 	}, nil
 }
 
-func NewNNSResolver(rpcAddress string) (*Resolver, error) {
+func NewNNSResolver(rpcAddress string, settings Settings) (*Resolver, error) {
+	if rpcAddress == "" {
+		return nil, fmt.Errorf("rpc address must not be empty for NNS resolver")
+	}
+	if settings == nil {
+		return nil, fmt.Errorf("resolver settings must not be nil for NNS resolver")
+	}
+
 	var nns ns.NNS
 
 	if err := nns.Dial(rpcAddress); err != nil {
 		return nil, fmt.Errorf("could not dial nns: %w", err)
 	}
 
-	resolveFunc := func(_ context.Context, name string) (*cid.ID, error) {
+	resolveFunc := func(ctx context.Context, name string) (*cid.ID, error) {
 		var d container.Domain
 		d.SetName(name)
 
+		namespace, err := middleware.GetNamespace(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		zone, _ := settings.FormContainerZone(namespace)
+		d.SetZone(zone)
+
 		cnrID, err := nns.ResolveContainerDomain(d)
 		if err != nil {
 			return nil, fmt.Errorf("couldn't resolve container '%s': %w", name, err)

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) {
-	tkn, err := fetchBearerToken(req)
+func StoreBearerTokenAppCtx(ctx context.Context, c *fasthttp.RequestCtx) (context.Context, error) {
+	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
@@ -75,43 +102,77 @@ func Test_fetchBearerToken(t *testing.T) {
 	require.NotEmpty(t, t64)
 
 	cases := []struct {
-		name string
-
+		name   string
 		cookie string
 		header string
-
 		error  string
+		nilCtx bool
 		expect *bearer.Token
 	}{
-		{name: "empty"},
-
-		{name: "bad base64 header", header: "WRONG BASE64", error: "can't base64-decode bearer token"},
-		{name: "bad base64 cookie", cookie: "WRONG BASE64", error: "can't base64-decode bearer token"},
-
-		{name: "header token unmarshal error", header: "dGVzdAo=", error: "can't unmarshal bearer token"},
-		{name: "cookie token unmarshal error", cookie: "dGVzdAo=", error: "can't unmarshal bearer token"},
-
+		{
+			name: "empty",
+		},
+		{
+			name:   "nil context",
+			nilCtx: true,
+		},
+		{
+			name:   "bad base64 header",
+			header: "WRONG BASE64",
+			error:  "can't base64-decode bearer token",
+		},
+		{
+			name:   "bad base64 cookie",
+			cookie: "WRONG BASE64",
+			error:  "can't base64-decode bearer token",
+		},
+		{
+			name:   "header token unmarshal error",
+			header: "dGVzdAo=",
+			error:  "can't unmarshal bearer token",
+		},
+		{
+			name:   "cookie token unmarshal error",
+			cookie: "dGVzdAo=",
+			error:  "can't unmarshal bearer token",
+		},
 		{
 			name:   "bad header and cookie",
 			header: "WRONG BASE64",
 			cookie: "dGVzdAo=",
 			error:  "can't unmarshal bearer token",
 		},
-
 		{
 			name:   "bad header, but good cookie",
 			header: "dGVzdAo=",
 			cookie: t64,
 			expect: tkn,
 		},
-
-		{name: "ok for header", header: t64, expect: tkn},
-		{name: "ok for cookie", cookie: t64, expect: tkn},
+		{
+			name:   "bad cookie, but good header",
+			header: t64,
+			cookie: "dGVzdAo=",
+			expect: tkn,
+		},
+		{
+			name:   "ok for header",
+			header: t64,
+			expect: tkn,
+		},
+		{
+			name:   "ok for cookie",
+			cookie: t64,
+			expect: tkn,
+		},
 	}
 
 	for _, tt := range cases {
 		t.Run(tt.name, func(t *testing.T) {
-			ctx := makeTestRequest(tt.cookie, tt.header)
+			var ctx *fasthttp.RequestCtx
+			if !tt.nilCtx {
+				ctx = makeTestRequest(tt.cookie, tt.header)
+			}
+
 			actual, err := fetchBearerToken(ctx)
 
 			if tt.error == "" {
@@ -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 +2,13 @@ package tree
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api/layer"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 )
@@ -20,6 +22,7 @@ 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 {
@@ -29,6 +32,7 @@ type (
 
 	GetNodesParams struct {
 		CnrID      cid.ID
+		BktInfo    *data.BucketInfo
 		TreeID     string
 		Path       []string
 		Meta       []string
@@ -54,6 +58,7 @@ const (
 
 	// keys for delete marker nodes.
 	isDeleteMarkerKV = "IsDeleteMarker"
+	sizeKV           = "Size"
 
 	// versionTree -- ID of a tree with object versions.
 	versionTree = "version"
@@ -73,26 +78,28 @@ type Meta interface {
 
 type NodeResponse interface {
 	GetMeta() []Meta
-	GetTimestamp() uint64
+	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) {
@@ -106,29 +113,44 @@ func (n *treeNode) FileName() (string, bool) {
 }
 
 func newNodeVersion(node NodeResponse) (*api.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 {
 	_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
-
+	size, _ := treeNode.Get(sizeKV)
 	version := &api.NodeVersion{
 		BaseNodeVersion: api.BaseNodeVersion{
 			OID: treeNode.ObjID,
 		},
 		DeleteMarker: isDeleteMarker,
+		IsPrefixNode: size == "",
 	}
 
 	return version
 }
 
 func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*api.NodeVersion, error) {
-	meta := []string{oidKV, isDeleteMarkerKV}
+	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{
@@ -139,30 +161,24 @@ func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName s
 		LatestOnly: false,
 		AllAttrs:   false,
 	}
-	nodes, err := c.service.GetNodes(ctx, p)
-	if err != nil {
-		return nil, err
-	}
 
-	latestNode, err := getLatestNode(nodes)
-	if err != nil {
-		return nil, err
-	}
-
-	return newNodeVersion(latestNode)
+	return c.service.GetNodes(ctx, p)
 }
 
-func getLatestNode(nodes []NodeResponse) (NodeResponse, error) {
+func getLatestVersionNode(nodes []NodeResponse) (NodeResponse, error) {
 	var (
 		maxCreationTime uint64
 		targetIndexNode = -1
 	)
 
 	for i, node := range nodes {
-		currentCreationTime := node.GetTimestamp()
-		if checkExistOID(node.GetMeta()) && currentCreationTime > maxCreationTime {
-			maxCreationTime = currentCreationTime
+		if !checkExistOID(node.GetMeta()) {
+			continue
+		}
+
+		if currentCreationTime := getMaxTimestamp(node); currentCreationTime > maxCreationTime {
 			targetIndexNode = i
+			maxCreationTime = currentCreationTime
 		}
 	}
 
@@ -187,3 +203,145 @@ func checkExistOID(meta []Meta) bool {
 func pathFromName(objectName string) []string {
 	return strings.Split(objectName, separator)
 }
+
+func (c *Tree) GetSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]NodeResponse, 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, layer.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([]NodeResponse, 0, len(subTree))
+	for _, nodes := range nodesMap {
+		result = append(result, nodes...)
+	}
+
+	return result, strings.TrimSuffix(prefix, tailPrefix), nil
+}
+
+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

@@ -21,10 +21,10 @@ func (m nodeMeta) GetValue() []byte {
 
 type nodeResponse struct {
 	meta      []nodeMeta
-	timestamp uint64
+	timestamp []uint64
 }
 
-func (n nodeResponse) GetTimestamp() uint64 {
+func (n nodeResponse) GetTimestamp() []uint64 {
 	return n.timestamp
 }
 
@@ -36,6 +36,13 @@ func (n nodeResponse) GetMeta() []Meta {
 	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
@@ -52,7 +59,7 @@ func TestGetLatestNode(t *testing.T) {
 			name: "one node of the object version",
 			nodes: []NodeResponse{
 				nodeResponse{
-					timestamp: 1,
+					timestamp: []uint64{1},
 					meta: []nodeMeta{
 						{
 							key:   oidKV,
@@ -67,11 +74,11 @@ func TestGetLatestNode(t *testing.T) {
 			name: "one node of the object version and one node of the secondary object",
 			nodes: []NodeResponse{
 				nodeResponse{
-					timestamp: 3,
+					timestamp: []uint64{3},
 					meta:      []nodeMeta{},
 				},
 				nodeResponse{
-					timestamp: 1,
+					timestamp: []uint64{1},
 					meta: []nodeMeta{
 						{
 							key:   oidKV,
@@ -86,11 +93,11 @@ func TestGetLatestNode(t *testing.T) {
 			name: "all nodes represent a secondary object",
 			nodes: []NodeResponse{
 				nodeResponse{
-					timestamp: 3,
+					timestamp: []uint64{3},
 					meta:      []nodeMeta{},
 				},
 				nodeResponse{
-					timestamp: 5,
+					timestamp: []uint64{5},
 					meta:      []nodeMeta{},
 				},
 			},
@@ -100,7 +107,7 @@ func TestGetLatestNode(t *testing.T) {
 			name: "several nodes of different types and with different timestamp",
 			nodes: []NodeResponse{
 				nodeResponse{
-					timestamp: 1,
+					timestamp: []uint64{1},
 					meta: []nodeMeta{
 						{
 							key:   oidKV,
@@ -109,11 +116,11 @@ func TestGetLatestNode(t *testing.T) {
 					},
 				},
 				nodeResponse{
-					timestamp: 3,
+					timestamp: []uint64{3},
 					meta:      []nodeMeta{},
 				},
 				nodeResponse{
-					timestamp: 4,
+					timestamp: []uint64{4},
 					meta: []nodeMeta{
 						{
 							key:   oidKV,
@@ -122,7 +129,7 @@ func TestGetLatestNode(t *testing.T) {
 					},
 				},
 				nodeResponse{
-					timestamp: 6,
+					timestamp: []uint64{6},
 					meta:      []nodeMeta{},
 				},
 			},
@@ -130,7 +137,7 @@ func TestGetLatestNode(t *testing.T) {
 		},
 	} {
 		t.Run(tc.name, func(t *testing.T) {
-			actualNode, err := getLatestNode(tc.nodes)
+			actualNode, err := getLatestVersionNode(tc.nodes)
 			if tc.error {
 				require.Error(t, err)
 				return

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
+}