.forgejo/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,45 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: community, triage, bug
+assignees: ''
+
+---
+
+<!--- Provide a general summary of the issue in the Title above -->
+
+## Expected Behavior
+<!--- If you're describing a bug, tell us what should happen -->
+<!--- If you're suggesting a change/improvement, tell us how it should work -->
+
+## Current Behavior
+<!--- If describing a bug, tell us what happens instead of the expected behavior -->
+<!--- If suggesting a change/improvement, explain the difference from current behavior -->
+
+## Possible Solution
+<!--- Not obligatory -->
+<!--- If no reason/fix/additions for the bug can be suggested, -->
+<!--- uncomment the following phrase: -->
+
+<!--- No fix can be suggested by a QA engineer. Further solutions shall be up to developers. -->
+
+## Steps to Reproduce (for bugs)
+<!--- Provide a link to a live example, or an unambiguous set of steps to -->
+<!--- reproduce this bug. -->
+
+1.
+
+## Context
+<!--- How has this issue affected you? What are you trying to accomplish? -->
+<!--- Providing context helps us come up with a solution that is most useful in the real world -->
+
+## Regression
+<!-- Is this issue a regression? (Yes / No) -->
+<!-- If Yes, optionally please include version or commit id or PR# that caused this regression, if you have these details. -->
+
+## Your Environment
+<!--- Include as many relevant details about the environment you experienced the bug in -->
+* Version used:
+* Server setup and configuration:
+* Operating System and version (`uname -a`):

.forgejo/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false

.forgejo/ISSUE_TEMPLATE/feature_request.md

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

.forgejo/workflows/dco.yml

@@ -0,0 +1,21 @@
+name: DCO
+on: [pull_request]
+
+jobs:
+  dco:
+    name: DCO
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.23'
+
+      - name: Run commit format checker
+        uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
+        with:
+          from: 'origin/${{ github.event.pull_request.base.ref }}'

.forgejo/workflows/tests.yml

@@ -0,0 +1,39 @@
+name: Tests and linters
+on: [pull_request]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.23'
+          cache: true
+
+      - name: Install linters
+        run: make lint-install
+
+      - name: Run linters
+        run: make lint
+
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go_versions: [ '1.22', '1.23' ]
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '${{ matrix.go_versions }}'
+
+      - name: Run tests
+        run: make test

.gitattributes

@@ -0,0 +1,7 @@
+/pkg/policy/parser/*.go -diff
+/pkg/policy/parser/generate.go diff
+**/*.interp -diff
+**/*.tokens -diff
+/**/*.pb.go -diff -merge
+/**/*.pb.go linguist-generated=true
+/go.sum -diff

.gitignore

@@ -0,0 +1,33 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories
+vendor/
+
+# IDE
+.idea
+.vscode
+
+# coverage
+coverage.txt
+coverage.html
+
+# antlr tool jar
+antlr*.jar
+
+# tempfiles
+.cache
+
+# binary
+bin/
+release/

.golangci.yml

@@ -0,0 +1,69 @@
+# This file contains all available configuration options
+# with their default values.
+
+# options for analysis running
+run:
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  timeout: 10m
+
+  # include test files or not, default is true
+  tests: false
+
+# output configuration options
+output:
+  # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
+  formats:
+    - format: tab
+
+# all available settings of specific linters
+linters-settings:
+  exhaustive:
+    # indicates that switch statements are to be considered exhaustive if a
+    # 'default' case is present, even if all enum members aren't listed in the
+    # switch
+    default-signifies-exhaustive: true
+  govet:
+    # report about shadowed variables
+    check-shadowing: false
+  staticcheck:
+    checks: ["all"]
+  funlen:
+    lines: 80 # default 60
+    statements: 60 # default 40
+  gocognit:
+    min-complexity: 40 # default 30
+
+linters:
+  enable:
+    # mandatory linters
+    - govet
+    - revive
+
+    # some default golangci-lint linters
+    - errcheck
+    - gosimple
+    - godot
+    - ineffassign
+    - staticcheck
+    - typecheck
+    - unused
+
+    # extra linters
+    - bidichk
+    - durationcheck
+    - exhaustive
+    - copyloopvar
+    - gofmt
+    - goimports
+    - misspell
+    - predeclared
+    - reassign
+    - whitespace
+    - containedctx
+    - funlen
+    - gocognit
+    - contextcheck
+    - protogetter
+    - intrange
+  disable-all: true
+  fast: false

.pre-commit-config.yaml

@@ -0,0 +1,36 @@
+ci:
+  autofix_prs: false
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+    - id: check-added-large-files
+    - id: check-case-conflict
+    - id: check-executables-have-shebangs
+    - id: check-shebang-scripts-are-executable
+    - id: check-merge-conflict
+    - id: check-json
+    - id: check-xml
+    - id: check-yaml
+    - id: trailing-whitespace
+      args: [--markdown-linebreak-ext=md]
+    - id: end-of-file-fixer
+      exclude: "(.key|.interp|.tokens)$"
+
+  - repo: local
+    hooks:
+       - id: go-unit-tests
+         name: go unit tests
+         entry: make test GOFLAGS=''
+         pass_filenames: false
+         types: [go]
+         language: system
+
+  - repo: local
+    hooks:
+      - id: make-lint
+        name: Run Make Lint
+        entry: make lint
+        language: system
+        pass_filenames: false

CODEOWNERS

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

Dockerfile

@@ -0,0 +1,4 @@
+FROM golang:1.22
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install make openjdk-17-jre -y
+WORKDIR /work

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   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.

Makefile

@@ -0,0 +1,156 @@
+#!/usr/bin/make -f
+
+ANTLR_VERSION=4.13.1
+TMP_DIR := .cache
+LINT_VERSION ?= 1.61.0
+TRUECLOUDLAB_LINT_VERSION ?= 0.0.7
+OUTPUT_LINT_DIR ?= $(shell pwd)/bin
+LINT_DIR = $(OUTPUT_LINT_DIR)/golangci-lint-$(LINT_VERSION)-v$(TRUECLOUDLAB_LINT_VERSION)
+
+PROTOC_VERSION ?= 29.2
+PROTOC_GEN_GO_VERSION ?= $(shell go list -f '{{.Version}}' -m google.golang.org/protobuf)
+PROTOC_OS_VERSION=osx-x86_64
+ifeq ($(shell uname), Linux)
+	PROTOC_OS_VERSION=linux-x86_64
+endif
+
+BIN = bin
+PROTOBUF_DIR ?= $(abspath $(BIN))/protobuf
+PROTOC_DIR ?= $(PROTOBUF_DIR)/protoc-v$(PROTOC_VERSION)
+PROTOC_GEN_GO_DIR ?= $(PROTOBUF_DIR)/protoc-gen-go-$(PROTOC_GEN_GO_VERSION)
+
+
+.PHONY: dep imports protoc test lint help $(BIN)/protogen protoc-test
+
+# Run tests
+test: GOFLAGS ?= "-cover -count=1"
+test:
+	@GOFLAGS=$(GOFLAGS) go test ./...
+
+# Reformat imports
+imports:
+	@echo "⇒ Processing goimports check"
+	@for f in `find . -type f -name '*.go' -not -name '*.pb.go' -prune`; do \
+		goimports -w $$f; \
+	done
+
+# Install protoc
+protoc-install:
+	@rm -rf $(PROTOBUF_DIR)
+	@mkdir -p $(PROTOBUF_DIR)
+	@echo "⇒ Installing protoc... "
+	@wget -q -O $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip 'https://github.com/protocolbuffers/protobuf/releases/download/v$(PROTOC_VERSION)/protoc-$(PROTOC_VERSION)-$(PROTOC_OS_VERSION).zip'
+	@unzip -q -o $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip -d $(PROTOC_DIR)
+	@rm $(PROTOBUF_DIR)/protoc-$(PROTOC_VERSION).zip
+	@echo "⇒ Installing protoc-gen-go..."
+	@GOBIN=$(PROTOC_GEN_GO_DIR) go install -v google.golang.org/protobuf/...@$(PROTOC_GEN_GO_VERSION)
+
+
+# Regenerate code for proto files
+protoc:
+	@if [ ! -d "$(PROTOC_DIR)" ] || [ ! -d "$(PROTOC_GEN_GO_DIR)" ]; then \
+		make protoc-install; \
+	fi
+	# Protoc generate
+	@for f in `find . -type f -name '*.proto' -not -path './bin/*'`; do \
+		echo "⇒ Processing $$f "; \
+		$(PROTOC_DIR)/bin/protoc \
+			--plugin=protoc-gen-go=$(PROTOC_GEN_GO_DIR)/protoc-gen-go \
+			--go_out=. --go_opt=paths=source_relative \
+			--go_opt=default_api_level=API_HYBRID \
+			--go-grpc_opt=require_unimplemented_servers=false \
+			--go-grpc_out=. --go-grpc_opt=paths=source_relative $$f; \
+	done
+
+$(BIN)/protogen:
+	@go build -v -trimpath \
+		-o $(BIN)/protogen \
+		./api/util/protogen
+
+protoc-test: protoc $(BIN)/protogen
+	@$(PROTOC_DIR)/bin/protoc \
+			--go_out=. --go_opt=paths=source_relative \
+			--plugin=protoc-gen-go-frostfs=$(abspath $(BIN)/protogen) \
+			--go-frostfs_opt=Mapi/util/proto/test/test.proto=git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto/test/custom \
+			--go-frostfs_opt=module=git.frostfs.info/TrueCloudLab/frostfs-sdk-go \
+			--go-frostfs_out=. --go-frostfs_opt=paths=import \
+			./api/util/proto/test/test.proto
+
+# Pull go dependencies
+dep:
+	@printf "⇒ Download requirements: "
+	@CGO_ENABLED=0 \
+	go mod download && echo OK
+	@printf "⇒ Tidy requirements: "
+	@CGO_ENABLED=0 \
+	go mod tidy -v && echo OK
+
+# Install linters
+lint-install:
+	@mkdir -p $(TMP_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@git -c advice.detachedHead=false clone --branch v$(TRUECLOUDLAB_LINT_VERSION) https://git.frostfs.info/TrueCloudLab/linters.git $(TMP_DIR)/linters
+	@@make -C $(TMP_DIR)/linters lib CGO_ENABLED=1 OUT_DIR=$(OUTPUT_LINT_DIR)
+	@rm -rf $(TMP_DIR)/linters
+	@rmdir $(TMP_DIR) 2>/dev/null || true
+	@CGO_ENABLED=1 GOBIN=$(LINT_DIR) go install github.com/golangci/golangci-lint/cmd/golangci-lint@v$(LINT_VERSION)
+
+# Run linters
+lint:
+	@if [ ! -d "$(LINT_DIR)" ]; then \
+		echo "Run make lint-install"; \
+		exit 1; \
+	fi
+	$(LINT_DIR)/golangci-lint run
+
+# Run tests with race detection and produce coverage output
+cover:
+	@go test -v -race ./... -coverprofile=coverage.txt -covermode=atomic
+	@go tool cover -html=coverage.txt -o coverage.html
+
+# Reformat code
+format:
+	@echo "⇒ Processing gofmt check"
+	@gofmt -s -w ./
+	@echo "⇒ Processing goimports check"
+	@goimports -w ./
+
+policy:
+	@wget -q https://www.antlr.org/download/antlr-${ANTLR_VERSION}-complete.jar -O antlr4-tool.jar
+	@java -Xmx500M -cp antlr4-tool.jar org.antlr.v4.Tool -Dlanguage=Go \
+	-no-listener -visitor netmap/parser/Query.g4 netmap/parser/QueryLexer.g4
+
+# Run `make %` in truecloudlab/frostfs-sdk-go container(Golang+Java)
+docker/%:
+	@docker build -t truecloudlab/frostfs-sdk-go --platform linux/amd64 . > /dev/null
+	@docker run --rm -t \
+	-v `pwd`:/work \
+	-u "$$(id -u):$$(id -g)" \
+	--env HOME=/work \
+	truecloudlab/frostfs-sdk-go make $*
+
+# Synchronize tree service
+sync-tree:
+	@./syncTree.sh
+
+# Show this help prompt
+help:
+	@echo '  Usage:'
+	@echo ''
+	@echo '    make <target>'
+	@echo ''
+	@echo '  Targets:'
+	@echo ''
+	@awk '/^#/{ comment = substr($$0,3) } comment && /^[a-zA-Z][a-zA-Z0-9_-]+ ?:/{ print "   ", $$1, comment }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort -u
+
+# Activate pre-commit hooks
+pre-commit:
+	pre-commit install --hook-type pre-commit
+
+# Deactivate pre-commit hooks
+unpre-commit:
+	pre-commit uninstall --hook-type pre-commit
+
+# Run pre-commit hooks
+pre-commit-run:
+	@pre-commit run --all-files --hook-stage manual

README.md

@@ -1,3 +1,132 @@
-# WIP area: this repo is just a fork!
+# frostfs-sdk-go
+Go implementation of FrostFS SDK. It contains high-level version-independent wrappers
+for structures from [frostfs-api-go](https://git.frostfs.info/TrueCloudLab/frostfs-api-go) as well as
+helper functions for simplifying node/dApp implementations.
 
-Useful things may be published only in [other branches](../../../branches)
+## Repository structure
+
+### accounting
+Contains fixed-point `Decimal` type for performing balance calculations.
+
+### eacl
+Contains Extended ACL types for fine-grained access control.
+There is also a reference implementation of checking algorithm which is used in FrostFS node.
+
+### checksum
+Contains `Checksum` type encapsulating checksum as well as it's kind.
+Currently Sha256 and [Tillich-Zemor hashsum](https://git.frostfs.info/TrueCloudLab/tzhash) are in use.
+
+### owner
+`owner.ID` type represents single account interacting with FrostFS. In v2 version of protocol
+it is just raw bytes behing [base58-encoded address](https://docs.neo.org/docs/en-us/basic/concept/wallets.html#address)
+in Neo blockchain. Note that for historical reasons it contains
+version prefix and checksum in addition to script-hash.
+
+### token
+Contains Bearer token type with several FrostFS-specific methods.
+
+### ns
+In FrostFS there are 2 types of name resolution: DNS and NNS. NNS stands for Neo Name Service
+is just a [contract](https://git.frostfs.info/TrueCloudLab/frostfs-contract) deployed on a Neo blockchain.
+Basically, NNS is just a DNS-on-chain which can be used for resolving container nice-names as well
+as any other name in dApps. See our [CoreDNS plugin](https://github.com/nspcc-dev/coredns/tree/master/plugin/nns)
+for the example of how NNS can be integrated in DNS.
+
+### session
+To help lightweight clients interact with FrostFS without sacrificing trust, FrostFS has a concept
+of session token. It is signed by client and allows any node with which a session is established
+to perform certain actions on behalf of the user.
+
+### client
+Contains client for working with FrostFS.
+```go
+var prmInit client.PrmInit
+prmInit.SetDefaultPrivateKey(key) // private key for request signing
+
+var c client.Client
+c.Init(prmInit)
+
+var prmDial client.PrmDial
+prmDial.SetServerURI("grpcs://localhost:40005") // endpoint address
+
+err := c.Dial(prmDial)
+if err != nil {
+    return
+}
+
+ctx, cancel := context.WithTimeout(context.Background(), 5 * time.Second)
+defer cancel()
+
+var prm client.PrmBalanceGet
+prm.SetAccount(acc)
+
+res, err := c.BalanceGet(ctx, prm)
+if err != nil {
+    return
+}
+
+fmt.Printf("Balance for %s: %v\n", acc, res.Amount())
+```
+
+#### Response status
+In FrostFS every operation can fail on multiple levels, so a single `error` doesn't suffice,
+e.g. consider a case when object was put on 4 out of 5 replicas. Thus, all request execution
+details are contained in `Status` returned from every RPC call. dApp can inspect them
+if needed and perform any desired action. In the case above we may want to report
+these details to the user as well as retry an operation, possibly with different parameters.
+Status wire-format is extendable and each node can report any set of details it wants.
+The set of reserved status codes can be found in
+[FrostFS API](https://git.frostfs.info/TrueCloudLab/frostfs-api/src/branch/master/status/types.proto).
+
+### policy
+Contains helpers allowing conversion of placing policy from/to JSON representation
+and SQL-like human-readable language.
+```go
+p, _ := policy.Parse(`
+    REP 2
+    SELECT 6 FROM F
+    FILTER StorageType EQ SSD AS F`)
+
+// Convert parsed policy back to human-readable text and print.
+println(strings.Join(policy.Encode(p), "\n"))
+```
+
+### netmap
+Contains CRUSH-like implementation of container node selection algorithm. Relevant details
+are described in this paper http://ceur-ws.org/Vol-2344/short10.pdf . Note that it can be
+outdated in some details.
+
+`netmap/json_tests` subfolder contains language-agnostic tests for selection algorithm.
+
+```go
+import (
+    "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+    "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+)
+
+func placementNodes(addr *object.Address, p *netmap.PlacementPolicy, frostfsNodes []netmap.NodeInfo) {
+    // Convert list of nodes in FrostFS API format to the intermediate representation.
+    nodes := netmap.NodesFromInfo(nodes)
+
+    // Create new netmap (errors are skipped for the sake of clarity).
+    nm, _ := NewNetmap(nodes)
+
+    // Calculate nodes of container.
+    cn, _ := nm.GetContainerNodes(p, addr.ContainerID().ToV2().GetValue())
+
+    // Return list of nodes for each replica to place object on in the order of priority.
+    return nm.GetPlacementVectors(cn, addr.ObjectID().ToV2().GetValue())
+}
+```
+
+### pool
+Simple pool for managing connections to FrostFS nodes.
+
+### acl, checksum, version, signature
+Contain simple API wrappers.
+
+### logger
+Wrapper over `zap.Logger` which is used across FrostFS codebase.
+
+### util
+Utilities for working with signature-related code.

accounting/decimal.go

@@ -0,0 +1,64 @@
+package accounting
+
+import "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting"
+
+// Decimal represents decimal number for accounting operations.
+//
+// Decimal is mutually compatible with git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting.Decimal
+// message. See ReadFromV2 / WriteToV2 methods.
+//
+// Instances can be created using built-in var declaration.
+//
+// Note that direct typecast is not safe and may result in loss of compatibility:
+//
+//	_ = Decimal(accounting.Decimal{}) // not recommended
+type Decimal accounting.Decimal
+
+// ReadFromV2 reads Decimal from the accounting.Decimal message. Checks if the
+// message conforms to FrostFS API V2 protocol.
+//
+// See also WriteToV2.
+func (d *Decimal) ReadFromV2(m accounting.Decimal) error {
+	*d = Decimal(m)
+	return nil
+}
+
+// WriteToV2 writes Decimal to the accounting.Decimal message.
+// The message must not be nil.
+//
+// See also ReadFromV2.
+func (d Decimal) WriteToV2(m *accounting.Decimal) {
+	*m = (accounting.Decimal)(d)
+}
+
+// Value returns value of the decimal number.
+//
+// Zero Decimal has zero value.
+//
+// See also SetValue.
+func (d Decimal) Value() int64 {
+	return (*accounting.Decimal)(&d).GetValue()
+}
+
+// SetValue sets value of the decimal number.
+//
+// See also Value.
+func (d *Decimal) SetValue(v int64) {
+	(*accounting.Decimal)(d).SetValue(v)
+}
+
+// Precision returns precision of the decimal number.
+//
+// Zero Decimal has zero precision.
+//
+// See also SetPrecision.
+func (d Decimal) Precision() uint32 {
+	return (*accounting.Decimal)(&d).GetPrecision()
+}
+
+// SetPrecision sets precision of the decimal number.
+//
+// See also Precision.
+func (d *Decimal) SetPrecision(p uint32) {
+	(*accounting.Decimal)(d).SetPrecision(p)
+}

accounting/decimal_test.go

@@ -0,0 +1,46 @@
+package accounting_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/accounting"
+	v2accounting "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDecimalData(t *testing.T) {
+	const v, p = 4, 2
+
+	var d accounting.Decimal
+
+	require.Zero(t, d.Value())
+	require.Zero(t, d.Precision())
+
+	d.SetValue(v)
+	d.SetPrecision(p)
+
+	require.EqualValues(t, v, d.Value())
+	require.EqualValues(t, p, d.Precision())
+}
+
+func TestDecimalMessageV2(t *testing.T) {
+	var (
+		d accounting.Decimal
+		m v2accounting.Decimal
+	)
+
+	m.SetValue(7)
+	m.SetPrecision(8)
+
+	require.NoError(t, d.ReadFromV2(m))
+
+	require.EqualValues(t, m.GetValue(), d.Value())
+	require.EqualValues(t, m.GetPrecision(), d.Precision())
+
+	var m2 v2accounting.Decimal
+
+	d.WriteToV2(&m2)
+
+	require.EqualValues(t, d.Value(), m2.GetValue())
+	require.EqualValues(t, d.Precision(), m2.GetPrecision())
+}

accounting/doc.go

@@ -0,0 +1,35 @@
+/*
+Package accounting provides primitives to perform accounting operations in FrostFS.
+
+Decimal type provides functionality to process user balances. For example, when
+working with Fixed8 balance precision:
+
+	var dec accounting.Decimal
+	dec.SetValue(val)
+	dec.SetPrecision(8)
+
+Instances can be also used to process FrostFS API V2 protocol messages
+(see neo.fs.v2.accounting package in https://git.frostfs.info/TrueCloudLab/frostfs-api).
+
+On client side:
+
+	import "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting"
+
+	var msg accounting.Decimal
+	dec.WriteToV2(&msg)
+
+	// send msg
+
+On server side:
+
+	// recv msg
+
+	var dec accounting.Decimal
+	dec.ReadFromV2(msg)
+
+	// process dec
+
+Using package types in an application is recommended to potentially work with
+different protocol versions with which these types are compatible.
+*/
+package accounting

accounting/test/decimal.go

@@ -0,0 +1,16 @@
+package accountingtest
+
+import (
+	"math/rand"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/accounting"
+)
+
+// Decimal returns random accounting.Decimal.
+func Decimal() *accounting.Decimal {
+	var d accounting.Decimal
+	d.SetValue(rand.Int63())
+	d.SetPrecision(rand.Uint32())
+
+	return &d
+}

accounting/test/doc.go

@@ -0,0 +1,13 @@
+/*
+Package accountingtest provides functions for convenient testing of accounting package API.
+
+Note that importing the package into source files is highly discouraged.
+
+Random instance generation functions can be useful when testing expects any value, e.g.:
+
+	import accountingtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/accounting/test"
+
+	dec := accountingtest.Decimal()
+	// test the value
+*/
+package accountingtest

ape/chain.go

@@ -0,0 +1,52 @@
+package ape
+
+import (
+	"errors"
+	"fmt"
+
+	apeV2 "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+)
+
+var (
+	ErrInvalidChainRepresentation = errors.New("invalid chain representation")
+)
+
+// ChainID is Chain's identifier.
+type ChainID []byte
+
+// Chain is an SDK representation for v2's Chain.
+//
+// Note that Chain (as well as v2's Chain) and all related entities
+// are NOT operated by Access-Policy-Engine (APE). The client is responsible
+// to convert these types to policy-engine entities.
+type Chain struct {
+	// Raw is the encoded chain kind.
+	// It assumes that Raw's bytes are the result of encoding provided by
+	// policy-engine package.
+	Raw []byte
+}
+
+// ToV2 converts Chain to v2.
+func (c *Chain) ToV2() *apeV2.Chain {
+	v2ct := new(apeV2.Chain)
+
+	if c.Raw != nil {
+		v2Raw := new(apeV2.ChainRaw)
+		v2Raw.SetRaw(c.Raw)
+		v2ct.SetKind(v2Raw)
+	}
+
+	return v2ct
+}
+
+// ReadFromV2 fills Chain from v2.
+func (c *Chain) ReadFromV2(v2ct *apeV2.Chain) error {
+	switch v := v2ct.GetKind().(type) {
+	default:
+		return fmt.Errorf("unsupported chain kind: %T", v)
+	case *apeV2.ChainRaw:
+		raw := v.GetRaw()
+		c.Raw = raw
+	}
+	return nil
+}

ape/chain_target.go

@@ -0,0 +1,53 @@
+package ape
+
+import (
+	apeV2 "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+)
+
+// TargetType is an SDK representation for v2's TargetType.
+type TargetType apeV2.TargetType
+
+const (
+	TargetTypeUndefined TargetType = iota
+	TargetTypeNamespace
+	TargetTypeContainer
+	TargetTypeUser
+	TargetTypeGroup
+)
+
+// ToV2 converts TargetType to v2.
+func (targetType TargetType) ToV2() apeV2.TargetType {
+	return apeV2.TargetType(targetType)
+}
+
+// FromV2 reads TargetType to v2.
+func (targetType *TargetType) FromV2(v2targetType apeV2.TargetType) {
+	*targetType = TargetType(v2targetType)
+}
+
+// ChainTarget is an SDK representation for v2's ChainTarget.
+//
+// Note that ChainTarget (as well as v2's ChainTarget) and all related entities
+// are NOT operated by Access-Policy-Engine (APE). The client is responsible
+// to convert these types to policy-engine entities.
+type ChainTarget struct {
+	TargetType TargetType
+
+	Name string
+}
+
+// ToV2 converts ChainTarget to v2.
+func (ct *ChainTarget) ToV2() *apeV2.ChainTarget {
+	v2ct := new(apeV2.ChainTarget)
+
+	v2ct.SetTargetType(ct.TargetType.ToV2())
+	v2ct.SetName(ct.Name)
+
+	return v2ct
+}
+
+// FromV2 reads ChainTarget frpm v2.
+func (ct *ChainTarget) FromV2(v2ct *apeV2.ChainTarget) {
+	ct.TargetType.FromV2(v2ct.GetTargetType())
+	ct.Name = v2ct.GetName()
+}

ape/chain_target_test.go

@@ -0,0 +1,65 @@
+package ape_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/ape"
+	"github.com/stretchr/testify/require"
+
+	apeV2 "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+)
+
+var (
+	m = map[ape.TargetType]apeV2.TargetType{
+		ape.TargetTypeUndefined: apeV2.TargetTypeUndefined,
+		ape.TargetTypeNamespace: apeV2.TargetTypeNamespace,
+		ape.TargetTypeContainer: apeV2.TargetTypeContainer,
+		ape.TargetTypeUser:      apeV2.TargetTypeUser,
+		ape.TargetTypeGroup:     apeV2.TargetTypeGroup,
+	}
+)
+
+func TestTargetType(t *testing.T) {
+	for typesdk, typev2 := range m {
+		t.Run("from sdk to v2 "+typev2.String(), func(t *testing.T) {
+			v2 := typesdk.ToV2()
+			require.Equal(t, v2, typev2)
+		})
+
+		t.Run("from v2 to sdk "+typev2.String(), func(t *testing.T) {
+			var typ ape.TargetType
+			typ.FromV2(typev2)
+			require.Equal(t, typesdk, typ)
+		})
+	}
+}
+
+func TestChainTarget(t *testing.T) {
+	var (
+		typ  = ape.TargetTypeNamespace
+		name = "namespaceXXYYZZ"
+	)
+
+	t.Run("from sdk to v2", func(t *testing.T) {
+		ct := ape.ChainTarget{
+			TargetType: typ,
+			Name:       name,
+		}
+
+		v2 := ct.ToV2()
+		require.Equal(t, m[typ], v2.GetTargetType())
+		require.Equal(t, name, v2.GetName())
+	})
+
+	t.Run("from v2 to sdk", func(t *testing.T) {
+		v2 := &apeV2.ChainTarget{}
+		v2.SetTargetType(m[typ])
+		v2.SetName(name)
+
+		var ct ape.ChainTarget
+		ct.FromV2(v2)
+
+		require.Equal(t, typ, ct.TargetType)
+		require.Equal(t, name, ct.Name)
+	})
+}

ape/chain_test.go

@@ -0,0 +1,43 @@
+package ape_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/ape"
+	"github.com/stretchr/testify/require"
+
+	apeV2 "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+)
+
+const (
+	encoded = `{"ID":"","Rules":[{"Status":"Allow","Actions":{"Inverted":false,"Names":["GetObject"]},"Resources":{"Inverted":false,"Names":["native:object/*"]},"Any":false,"Condition":[{"Op":"StringEquals","Object":"Resource","Key":"Department","Value":"HR"}]}],"MatchType":"DenyPriority"}`
+)
+
+func TestChainData(t *testing.T) {
+	t.Run("raw chain", func(t *testing.T) {
+		var c ape.Chain
+
+		b := []byte(encoded)
+		c.Raw = b
+
+		v2, ok := c.ToV2().GetKind().(*apeV2.ChainRaw)
+		require.True(t, ok)
+		require.Equal(t, b, v2.Raw)
+	})
+}
+
+func TestChainMessageV2(t *testing.T) {
+	b := []byte(encoded)
+
+	v2Raw := &apeV2.ChainRaw{}
+	v2Raw.SetRaw(b)
+
+	v2 := &apeV2.Chain{}
+	v2.SetKind(v2Raw)
+
+	var c ape.Chain
+	c.ReadFromV2(v2)
+
+	require.NotNil(t, c.Raw)
+	require.Equal(t, b, c.Raw)
+}

ape/grpc/types_frostfs_fuzz.go

@@ -0,0 +1,45 @@
+//go:build gofuzz
+// +build gofuzz
+
+// Code generated by protoc-gen-go-frostfs. DO NOT EDIT.
+
+package ape
+
+func DoFuzzProtoChainTarget(data []byte) int {
+	msg := new(ChainTarget)
+	if err := msg.UnmarshalProtobuf(data); err != nil {
+		return 0
+	}
+	_ = msg.MarshalProtobuf(nil)
+	return 1
+}
+func DoFuzzJSONChainTarget(data []byte) int {
+	msg := new(ChainTarget)
+	if err := msg.UnmarshalJSON(data); err != nil {
+		return 0
+	}
+	_, err := msg.MarshalJSON()
+	if err != nil {
+		panic(err)
+	}
+	return 1
+}
+func DoFuzzProtoChain(data []byte) int {
+	msg := new(Chain)
+	if err := msg.UnmarshalProtobuf(data); err != nil {
+		return 0
+	}
+	_ = msg.MarshalProtobuf(nil)
+	return 1
+}
+func DoFuzzJSONChain(data []byte) int {
+	msg := new(Chain)
+	if err := msg.UnmarshalJSON(data); err != nil {
+		return 0
+	}
+	_, err := msg.MarshalJSON()
+	if err != nil {
+		panic(err)
+	}
+	return 1
+}

ape/grpc/types_frostfs_test.go

@@ -0,0 +1,31 @@
+//go:build gofuzz
+// +build gofuzz
+
+// Code generated by protoc-gen-go-frostfs. DO NOT EDIT.
+
+package ape
+
+import (
+	testing "testing"
+)
+
+func FuzzProtoChainTarget(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzProtoChainTarget(data)
+	})
+}
+func FuzzJSONChainTarget(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzJSONChainTarget(data)
+	})
+}
+func FuzzProtoChain(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzProtoChain(data)
+	})
+}
+func FuzzJSONChain(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		DoFuzzJSONChain(data)
+	})
+}

api/accounting/accounting.go

@@ -0,0 +1,104 @@
+package accounting
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+)
+
+type BalanceRequestBody struct {
+	ownerID *refs.OwnerID
+}
+
+type BalanceResponseBody struct {
+	bal *Decimal
+}
+
+type Decimal struct {
+	val int64
+
+	prec uint32
+}
+
+type BalanceRequest struct {
+	body *BalanceRequestBody
+
+	session.RequestHeaders
+}
+
+type BalanceResponse struct {
+	body *BalanceResponseBody
+
+	session.ResponseHeaders
+}
+
+func (b *BalanceRequestBody) GetOwnerID() *refs.OwnerID {
+	if b != nil {
+		return b.ownerID
+	}
+
+	return nil
+}
+
+func (b *BalanceRequestBody) SetOwnerID(v *refs.OwnerID) {
+	b.ownerID = v
+}
+
+func (b *BalanceRequest) GetBody() *BalanceRequestBody {
+	if b != nil {
+		return b.body
+	}
+
+	return nil
+}
+
+func (b *BalanceRequest) SetBody(v *BalanceRequestBody) {
+	b.body = v
+}
+
+func (d *Decimal) GetValue() int64 {
+	if d != nil {
+		return d.val
+	}
+
+	return 0
+}
+
+func (d *Decimal) SetValue(v int64) {
+	d.val = v
+}
+
+func (d *Decimal) GetPrecision() uint32 {
+	if d != nil {
+		return d.prec
+	}
+
+	return 0
+}
+
+func (d *Decimal) SetPrecision(v uint32) {
+	d.prec = v
+}
+
+func (br *BalanceResponseBody) GetBalance() *Decimal {
+	if br != nil {
+		return br.bal
+	}
+
+	return nil
+}
+
+func (br *BalanceResponseBody) SetBalance(v *Decimal) {
+	br.bal = v
+}
+
+func (br *BalanceResponse) GetBody() *BalanceResponseBody {
+	if br != nil {
+		return br.body
+	}
+
+	return nil
+}
+
+func (br *BalanceResponse) SetBody(v *BalanceResponseBody) {
+	br.body = v
+}

api/accounting/convert.go

@@ -0,0 +1,178 @@
+package accounting
+
+import (
+	accounting "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	refsGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (b *BalanceRequestBody) ToGRPCMessage() grpc.Message {
+	var m *accounting.BalanceRequest_Body
+
+	if b != nil {
+		m = new(accounting.BalanceRequest_Body)
+
+		m.SetOwnerId(b.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
+	}
+
+	return m
+}
+
+func (b *BalanceRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*accounting.BalanceRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	ownerID := v.GetOwnerId()
+	if ownerID == nil {
+		b.ownerID = nil
+	} else {
+		if b.ownerID == nil {
+			b.ownerID = new(refs.OwnerID)
+		}
+
+		err = b.ownerID.FromGRPCMessage(ownerID)
+	}
+
+	return err
+}
+
+func (b *BalanceRequest) ToGRPCMessage() grpc.Message {
+	var m *accounting.BalanceRequest
+
+	if b != nil {
+		m = new(accounting.BalanceRequest)
+
+		m.SetBody(b.body.ToGRPCMessage().(*accounting.BalanceRequest_Body))
+		b.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (b *BalanceRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*accounting.BalanceRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		b.body = nil
+	} else {
+		if b.body == nil {
+			b.body = new(BalanceRequestBody)
+		}
+
+		err = b.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return b.RequestHeaders.FromMessage(v)
+}
+
+func (d *Decimal) ToGRPCMessage() grpc.Message {
+	var m *accounting.Decimal
+
+	if d != nil {
+		m = new(accounting.Decimal)
+
+		m.SetValue(d.val)
+		m.SetPrecision(d.prec)
+	}
+
+	return m
+}
+
+func (d *Decimal) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*accounting.Decimal)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	d.val = v.GetValue()
+	d.prec = v.GetPrecision()
+
+	return nil
+}
+
+func (br *BalanceResponseBody) ToGRPCMessage() grpc.Message {
+	var m *accounting.BalanceResponse_Body
+
+	if br != nil {
+		m = new(accounting.BalanceResponse_Body)
+
+		m.SetBalance(br.bal.ToGRPCMessage().(*accounting.Decimal))
+	}
+
+	return m
+}
+
+func (br *BalanceResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*accounting.BalanceResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	bal := v.GetBalance()
+	if bal == nil {
+		br.bal = nil
+	} else {
+		if br.bal == nil {
+			br.bal = new(Decimal)
+		}
+
+		err = br.bal.FromGRPCMessage(bal)
+	}
+
+	return err
+}
+
+func (br *BalanceResponse) ToGRPCMessage() grpc.Message {
+	var m *accounting.BalanceResponse
+
+	if br != nil {
+		m = new(accounting.BalanceResponse)
+
+		m.SetBody(br.body.ToGRPCMessage().(*accounting.BalanceResponse_Body))
+		br.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (br *BalanceResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*accounting.BalanceResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		br.body = nil
+	} else {
+		if br.body == nil {
+			br.body = new(BalanceResponseBody)
+		}
+
+		err = br.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return br.ResponseHeaders.FromMessage(v)
+}

api/accounting/json.go

@@ -0,0 +1,14 @@
+package accounting
+
+import (
+	accounting "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (d *Decimal) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(d)
+}
+
+func (d *Decimal) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(d, data, new(accounting.Decimal))
+}

api/accounting/marshal.go

@@ -0,0 +1,104 @@
+package accounting
+
+import (
+	accounting "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	protoutil "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	decimalValueField     = 1
+	decimalPrecisionField = 2
+
+	balanceReqBodyOwnerField = 1
+
+	balanceRespBodyDecimalField = 1
+)
+
+func (d *Decimal) StableMarshal(buf []byte) []byte {
+	if d == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, d.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.Int64Marshal(decimalValueField, buf[offset:], d.val)
+	protoutil.UInt32Marshal(decimalPrecisionField, buf[offset:], d.prec)
+
+	return buf
+}
+
+func (d *Decimal) StableSize() (size int) {
+	if d == nil {
+		return 0
+	}
+
+	size += protoutil.Int64Size(decimalValueField, d.val)
+	size += protoutil.UInt32Size(decimalPrecisionField, d.prec)
+
+	return size
+}
+
+func (d *Decimal) Unmarshal(data []byte) error {
+	return message.Unmarshal(d, data, new(accounting.Decimal))
+}
+
+func (b *BalanceRequestBody) StableMarshal(buf []byte) []byte {
+	if b == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, b.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(balanceReqBodyOwnerField, buf, b.ownerID)
+
+	return buf
+}
+
+func (b *BalanceRequestBody) StableSize() (size int) {
+	if b == nil {
+		return 0
+	}
+
+	size = protoutil.NestedStructureSize(balanceReqBodyOwnerField, b.ownerID)
+
+	return size
+}
+
+func (b *BalanceRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(b, data, new(accounting.BalanceRequest_Body))
+}
+
+func (br *BalanceResponseBody) StableMarshal(buf []byte) []byte {
+	if br == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, br.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(balanceRespBodyDecimalField, buf, br.bal)
+
+	return buf
+}
+
+func (br *BalanceResponseBody) StableSize() (size int) {
+	if br == nil {
+		return 0
+	}
+
+	size = protoutil.NestedStructureSize(balanceRespBodyDecimalField, br.bal)
+
+	return size
+}
+
+func (br *BalanceResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(br, data, new(accounting.BalanceResponse_Body))
+}

api/accounting/message_test.go

@@ -0,0 +1,19 @@
+package accounting_test
+
+import (
+	"testing"
+
+	accountingtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessage(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return accountingtest.GenerateDecimal(empty) },
+		func(empty bool) message.Message { return accountingtest.GenerateBalanceRequestBody(empty) },
+		func(empty bool) message.Message { return accountingtest.GenerateBalanceRequest(empty) },
+		func(empty bool) message.Message { return accountingtest.GenerateBalanceResponseBody(empty) },
+		func(empty bool) message.Message { return accountingtest.GenerateBalanceResponse(empty) },
+	)
+}

api/accounting/test/generate.go

@@ -0,0 +1,64 @@
+package accountingtest
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/accounting"
+	accountingtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/test"
+	sessiontest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/test"
+)
+
+func GenerateBalanceRequest(empty bool) *accounting.BalanceRequest {
+	m := new(accounting.BalanceRequest)
+
+	if !empty {
+		m.SetBody(GenerateBalanceRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateBalanceRequestBody(empty bool) *accounting.BalanceRequestBody {
+	m := new(accounting.BalanceRequestBody)
+
+	if !empty {
+		m.SetOwnerID(accountingtest.GenerateOwnerID(false))
+	}
+
+	return m
+}
+
+func GenerateBalanceResponse(empty bool) *accounting.BalanceResponse {
+	m := new(accounting.BalanceResponse)
+
+	if !empty {
+		m.SetBody(GenerateBalanceResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateBalanceResponseBody(empty bool) *accounting.BalanceResponseBody {
+	m := new(accounting.BalanceResponseBody)
+
+	if !empty {
+		m.SetBalance(GenerateDecimal(false))
+	}
+
+	return m
+}
+
+func GenerateDecimal(empty bool) *accounting.Decimal {
+	m := new(accounting.Decimal)
+
+	if !empty {
+		m.SetValue(1)
+		m.SetPrecision(2)
+	}
+
+	return m
+}

api/acl/bench_test.go

@@ -0,0 +1,51 @@
+package acl_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl"
+	aclGrpc "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/grpc"
+	acltest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/test"
+)
+
+func BenchmarkTable_ToGRPCMessage(b *testing.B) {
+	const size = 4
+
+	tb := new(acl.Table)
+	rs := make([]acl.Record, size)
+	for i := range rs {
+		fs := make([]acl.HeaderFilter, size)
+		for j := range fs {
+			fs[j] = *acltest.GenerateFilter(false)
+		}
+		ts := make([]acl.Target, size)
+		for j := range ts {
+			ts[j] = *acltest.GenerateTarget(false)
+		}
+
+		rs[i].SetFilters(fs)
+		rs[i].SetTargets(ts)
+	}
+	tb.SetRecords(rs)
+
+	raw := tb.ToGRPCMessage()
+
+	b.Run("to grpc message", func(b *testing.B) {
+		b.ReportAllocs()
+		for range b.N {
+			raw := tb.ToGRPCMessage()
+			if len(tb.GetRecords()) != len(raw.(*aclGrpc.EACLTable).Records) {
+				b.FailNow()
+			}
+		}
+	})
+	b.Run("from grpc message", func(b *testing.B) {
+		b.ReportAllocs()
+		for range b.N {
+			tb := new(acl.Table)
+			if tb.FromGRPCMessage(raw) != nil {
+				b.FailNow()
+			}
+		}
+	})
+}

api/acl/convert.go

@@ -0,0 +1,592 @@
+package acl
+
+import (
+	acl "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+	apeGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	refsGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+// RoleToGRPCField converts unified role enum into grpc enum.
+func RoleToGRPCField(t Role) acl.Role {
+	switch t {
+	case RoleUser:
+		return acl.Role_USER
+	case RoleSystem:
+		return acl.Role_SYSTEM
+	case RoleOthers:
+		return acl.Role_OTHERS
+	default:
+		return acl.Role_ROLE_UNSPECIFIED
+	}
+}
+
+// RoleFromGRPCField converts grpc enum into unified role enum.
+func RoleFromGRPCField(t acl.Role) Role {
+	switch t {
+	case acl.Role_USER:
+		return RoleUser
+	case acl.Role_SYSTEM:
+		return RoleSystem
+	case acl.Role_OTHERS:
+		return RoleOthers
+	default:
+		return RoleUnknown
+	}
+}
+
+// OperationToGRPCField converts unified operation enum into grpc enum.
+func OperationToGRPCField(t Operation) acl.Operation {
+	switch t {
+	case OperationPut:
+		return acl.Operation_PUT
+	case OperationDelete:
+		return acl.Operation_DELETE
+	case OperationGet:
+		return acl.Operation_GET
+	case OperationHead:
+		return acl.Operation_HEAD
+	case OperationSearch:
+		return acl.Operation_SEARCH
+	case OperationRange:
+		return acl.Operation_GETRANGE
+	case OperationRangeHash:
+		return acl.Operation_GETRANGEHASH
+	default:
+		return acl.Operation_OPERATION_UNSPECIFIED
+	}
+}
+
+// OperationFromGRPCField converts grpc enum into unified operation enum.
+func OperationFromGRPCField(t acl.Operation) Operation {
+	switch t {
+	case acl.Operation_PUT:
+		return OperationPut
+	case acl.Operation_DELETE:
+		return OperationDelete
+	case acl.Operation_GET:
+		return OperationGet
+	case acl.Operation_HEAD:
+		return OperationHead
+	case acl.Operation_SEARCH:
+		return OperationSearch
+	case acl.Operation_GETRANGE:
+		return OperationRange
+	case acl.Operation_GETRANGEHASH:
+		return OperationRangeHash
+	default:
+		return OperationUnknown
+	}
+}
+
+// ActionToGRPCField converts unified action enum into grpc enum.
+func ActionToGRPCField(t Action) acl.Action {
+	switch t {
+	case ActionDeny:
+		return acl.Action_DENY
+	case ActionAllow:
+		return acl.Action_ALLOW
+	default:
+		return acl.Action_ACTION_UNSPECIFIED
+	}
+}
+
+// ActionFromGRPCField converts grpc enum into unified action enum.
+func ActionFromGRPCField(t acl.Action) Action {
+	switch t {
+	case acl.Action_DENY:
+		return ActionDeny
+	case acl.Action_ALLOW:
+		return ActionAllow
+	default:
+		return ActionUnknown
+	}
+}
+
+// HeaderTypeToGRPCField converts unified header type enum into grpc enum.
+func HeaderTypeToGRPCField(t HeaderType) acl.HeaderType {
+	switch t {
+	case HeaderTypeRequest:
+		return acl.HeaderType_REQUEST
+	case HeaderTypeObject:
+		return acl.HeaderType_OBJECT
+	case HeaderTypeService:
+		return acl.HeaderType_SERVICE
+	default:
+		return acl.HeaderType_HEADER_UNSPECIFIED
+	}
+}
+
+// HeaderTypeFromGRPCField converts grpc enum into unified header type enum.
+func HeaderTypeFromGRPCField(t acl.HeaderType) HeaderType {
+	switch t {
+	case acl.HeaderType_REQUEST:
+		return HeaderTypeRequest
+	case acl.HeaderType_OBJECT:
+		return HeaderTypeObject
+	case acl.HeaderType_SERVICE:
+		return HeaderTypeService
+	default:
+		return HeaderTypeUnknown
+	}
+}
+
+// MatchTypeToGRPCField converts unified match type enum into grpc enum.
+func MatchTypeToGRPCField(t MatchType) acl.MatchType {
+	switch t {
+	case MatchTypeStringEqual:
+		return acl.MatchType_STRING_EQUAL
+	case MatchTypeStringNotEqual:
+		return acl.MatchType_STRING_NOT_EQUAL
+	default:
+		return acl.MatchType_MATCH_TYPE_UNSPECIFIED
+	}
+}
+
+// MatchTypeFromGRPCField converts grpc enum into unified match type enum.
+func MatchTypeFromGRPCField(t acl.MatchType) MatchType {
+	switch t {
+	case acl.MatchType_STRING_EQUAL:
+		return MatchTypeStringEqual
+	case acl.MatchType_STRING_NOT_EQUAL:
+		return MatchTypeStringNotEqual
+	default:
+		return MatchTypeUnknown
+	}
+}
+
+func (f *HeaderFilter) ToGRPCMessage() grpc.Message {
+	var m *acl.EACLRecord_Filter
+
+	if f != nil {
+		m = new(acl.EACLRecord_Filter)
+
+		m.SetKey(f.key)
+		m.SetValue(f.value)
+		m.SetHeaderType(HeaderTypeToGRPCField(f.hdrType))
+		m.SetMatchType(MatchTypeToGRPCField(f.matchType))
+	}
+
+	return m
+}
+
+func (f *HeaderFilter) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.EACLRecord_Filter)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	f.key = v.GetKey()
+	f.value = v.GetValue()
+	f.hdrType = HeaderTypeFromGRPCField(v.GetHeaderType())
+	f.matchType = MatchTypeFromGRPCField(v.GetMatchType())
+
+	return nil
+}
+
+func HeaderFiltersToGRPC(fs []HeaderFilter) (res []*acl.EACLRecord_Filter) {
+	if fs != nil {
+		res = make([]*acl.EACLRecord_Filter, 0, len(fs))
+
+		for i := range fs {
+			res = append(res, fs[i].ToGRPCMessage().(*acl.EACLRecord_Filter))
+		}
+	}
+
+	return
+}
+
+func HeaderFiltersFromGRPC(fs []*acl.EACLRecord_Filter) (res []HeaderFilter, err error) {
+	if fs != nil {
+		res = make([]HeaderFilter, len(fs))
+
+		for i := range fs {
+			err = res[i].FromGRPCMessage(fs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (t *Target) ToGRPCMessage() grpc.Message {
+	var m *acl.EACLRecord_Target
+
+	if t != nil {
+		m = new(acl.EACLRecord_Target)
+
+		m.SetRole(RoleToGRPCField(t.role))
+		m.SetKeys(t.keys)
+	}
+
+	return m
+}
+
+func (t *Target) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.EACLRecord_Target)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	t.role = RoleFromGRPCField(v.GetRole())
+	t.keys = v.GetKeys()
+
+	return nil
+}
+
+func TargetsToGRPC(ts []Target) (res []*acl.EACLRecord_Target) {
+	if ts != nil {
+		res = make([]*acl.EACLRecord_Target, 0, len(ts))
+
+		for i := range ts {
+			res = append(res, ts[i].ToGRPCMessage().(*acl.EACLRecord_Target))
+		}
+	}
+
+	return
+}
+
+func TargetsFromGRPC(fs []*acl.EACLRecord_Target) (res []Target, err error) {
+	if fs != nil {
+		res = make([]Target, len(fs))
+
+		for i := range fs {
+			err = res[i].FromGRPCMessage(fs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (r *Record) ToGRPCMessage() grpc.Message {
+	var m *acl.EACLRecord
+
+	if r != nil {
+		m = new(acl.EACLRecord)
+
+		m.SetOperation(OperationToGRPCField(r.op))
+		m.SetAction(ActionToGRPCField(r.action))
+		m.SetFilters(HeaderFiltersToGRPC(r.filters))
+		m.SetTargets(TargetsToGRPC(r.targets))
+	}
+
+	return m
+}
+
+func (r *Record) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.EACLRecord)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	r.filters, err = HeaderFiltersFromGRPC(v.GetFilters())
+	if err != nil {
+		return err
+	}
+
+	r.targets, err = TargetsFromGRPC(v.GetTargets())
+	if err != nil {
+		return err
+	}
+
+	r.op = OperationFromGRPCField(v.GetOperation())
+	r.action = ActionFromGRPCField(v.GetAction())
+
+	return nil
+}
+
+func RecordsToGRPC(ts []Record) (res []*acl.EACLRecord) {
+	if ts != nil {
+		res = make([]*acl.EACLRecord, 0, len(ts))
+
+		for i := range ts {
+			res = append(res, ts[i].ToGRPCMessage().(*acl.EACLRecord))
+		}
+	}
+
+	return
+}
+
+func RecordsFromGRPC(fs []*acl.EACLRecord) (res []Record, err error) {
+	if fs != nil {
+		res = make([]Record, len(fs))
+
+		for i := range fs {
+			err = res[i].FromGRPCMessage(fs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (t *Table) ToGRPCMessage() grpc.Message {
+	var m *acl.EACLTable
+
+	if t != nil {
+		m = new(acl.EACLTable)
+
+		m.SetVersion(t.version.ToGRPCMessage().(*refsGRPC.Version))
+		m.SetContainerId(t.cid.ToGRPCMessage().(*refsGRPC.ContainerID))
+		m.SetRecords(RecordsToGRPC(t.records))
+	}
+
+	return m
+}
+
+func (t *Table) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.EACLTable)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cid := v.GetContainerId()
+	if cid == nil {
+		t.cid = nil
+	} else {
+		if t.cid == nil {
+			t.cid = new(refs.ContainerID)
+		}
+
+		err = t.cid.FromGRPCMessage(cid)
+		if err != nil {
+			return err
+		}
+	}
+
+	version := v.GetVersion()
+	if version == nil {
+		t.version = nil
+	} else {
+		if t.version == nil {
+			t.version = new(refs.Version)
+		}
+
+		err = t.version.FromGRPCMessage(version)
+		if err != nil {
+			return err
+		}
+	}
+
+	t.records, err = RecordsFromGRPC(v.GetRecords())
+
+	return err
+}
+
+func (l *TokenLifetime) ToGRPCMessage() grpc.Message {
+	var m *acl.BearerToken_Body_TokenLifetime
+
+	if l != nil {
+		m = new(acl.BearerToken_Body_TokenLifetime)
+
+		m.SetExp(l.exp)
+		m.SetIat(l.iat)
+		m.SetNbf(l.nbf)
+	}
+
+	return m
+}
+
+func (l *TokenLifetime) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.BearerToken_Body_TokenLifetime)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	l.exp = v.GetExp()
+	l.iat = v.GetIat()
+	l.nbf = v.GetNbf()
+
+	return nil
+}
+
+func (c *APEOverride) ToGRPCMessage() grpc.Message {
+	var m *acl.BearerToken_Body_APEOverride
+
+	if c != nil {
+		m = new(acl.BearerToken_Body_APEOverride)
+
+		m.SetTarget(c.target.ToGRPCMessage().(*apeGRPC.ChainTarget))
+
+		if len(c.chains) > 0 {
+			apeChains := make([]*apeGRPC.Chain, len(c.chains))
+			for i := range c.chains {
+				apeChains[i] = c.chains[i].ToGRPCMessage().(*apeGRPC.Chain)
+			}
+			m.SetChains(apeChains)
+		}
+	}
+
+	return m
+}
+
+func (c *APEOverride) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.BearerToken_Body_APEOverride)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	if targetGRPC := v.GetTarget(); targetGRPC != nil {
+		if c.target == nil {
+			c.target = new(ape.ChainTarget)
+		}
+		if err := c.target.FromGRPCMessage(v.GetTarget()); err != nil {
+			return err
+		}
+	}
+
+	if apeChains := v.GetChains(); len(apeChains) > 0 {
+		c.chains = make([]*ape.Chain, len(apeChains))
+		for i := range apeChains {
+			c.chains[i] = new(ape.Chain)
+			if err := c.chains[i].FromGRPCMessage(apeChains[i]); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+func (bt *BearerTokenBody) ToGRPCMessage() grpc.Message {
+	var m *acl.BearerToken_Body
+
+	if bt != nil {
+		m = new(acl.BearerToken_Body)
+
+		m.SetOwnerId(bt.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
+		m.SetLifetime(bt.lifetime.ToGRPCMessage().(*acl.BearerToken_Body_TokenLifetime))
+		m.SetEaclTable(bt.eacl.ToGRPCMessage().(*acl.EACLTable))
+		m.SetAllowImpersonate(bt.impersonate)
+		m.SetApeOverride(bt.apeOverride.ToGRPCMessage().(*acl.BearerToken_Body_APEOverride))
+	}
+
+	return m
+}
+
+func (bt *BearerTokenBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.BearerToken_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	ownerID := v.GetOwnerId()
+	if ownerID == nil {
+		bt.ownerID = nil
+	} else {
+		if bt.ownerID == nil {
+			bt.ownerID = new(refs.OwnerID)
+		}
+
+		err = bt.ownerID.FromGRPCMessage(ownerID)
+		if err != nil {
+			return err
+		}
+	}
+
+	lifetime := v.GetLifetime()
+	if lifetime == nil {
+		bt.lifetime = nil
+	} else {
+		if bt.lifetime == nil {
+			bt.lifetime = new(TokenLifetime)
+		}
+
+		err = bt.lifetime.FromGRPCMessage(lifetime)
+		if err != nil {
+			return err
+		}
+	}
+
+	eacl := v.GetEaclTable()
+	if eacl == nil {
+		bt.eacl = nil
+	} else {
+		if bt.eacl == nil {
+			bt.eacl = new(Table)
+		}
+
+		if err = bt.eacl.FromGRPCMessage(eacl); err != nil {
+			return err
+		}
+	}
+
+	if apeOverrideGRPC := v.GetApeOverride(); apeOverrideGRPC != nil {
+		if bt.apeOverride == nil {
+			bt.apeOverride = new(APEOverride)
+		}
+		err = bt.apeOverride.FromGRPCMessage(apeOverrideGRPC)
+		if err != nil {
+			return err
+		}
+	}
+
+	bt.impersonate = v.GetAllowImpersonate()
+
+	return err
+}
+
+func (bt *BearerToken) ToGRPCMessage() grpc.Message {
+	var m *acl.BearerToken
+
+	if bt != nil {
+		m = new(acl.BearerToken)
+
+		m.SetBody(bt.body.ToGRPCMessage().(*acl.BearerToken_Body))
+		m.SetSignature(bt.sig.ToGRPCMessage().(*refsGRPC.Signature))
+	}
+
+	return m
+}
+
+func (bt *BearerToken) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*acl.BearerToken)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		bt.body = nil
+	} else {
+		if bt.body == nil {
+			bt.body = new(BearerTokenBody)
+		}
+
+		err = bt.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	sig := v.GetSignature()
+	if sig == nil {
+		bt.sig = nil
+	} else {
+		if bt.sig == nil {
+			bt.sig = new(refs.Signature)
+		}
+
+		err = bt.sig.FromGRPCMessage(sig)
+	}
+
+	return err
+}

api/acl/filters.go

@@ -0,0 +1,33 @@
+package acl
+
+// ObjectFilterPrefix is a prefix of key to object header value or property.
+const ObjectFilterPrefix = "$Object:"
+
+const (
+	// FilterObjectVersion is a filter key to "version" field of the object header.
+	FilterObjectVersion = ObjectFilterPrefix + "version"
+
+	// FilterObjectID is a filter key to "object_id" field of the object.
+	FilterObjectID = ObjectFilterPrefix + "objectID"
+
+	// FilterObjectContainerID is a filter key to "container_id" field of the object header.
+	FilterObjectContainerID = ObjectFilterPrefix + "containerID"
+
+	// FilterObjectOwnerID is a filter key to "owner_id" field of the object header.
+	FilterObjectOwnerID = ObjectFilterPrefix + "ownerID"
+
+	// FilterObjectCreationEpoch is a filter key to "creation_epoch" field of the object header.
+	FilterObjectCreationEpoch = ObjectFilterPrefix + "creationEpoch"
+
+	// FilterObjectPayloadLength is a filter key to "payload_length" field of the object header.
+	FilterObjectPayloadLength = ObjectFilterPrefix + "payloadLength"
+
+	// FilterObjectPayloadHash is a filter key to "payload_hash" field of the object header.
+	FilterObjectPayloadHash = ObjectFilterPrefix + "payloadHash"
+
+	// FilterObjectType is a filter key to "object_type" field of the object header.
+	FilterObjectType = ObjectFilterPrefix + "objectType"
+
+	// FilterObjectHomomorphicHash is a filter key to "homomorphic_hash" field of the object header.
+	FilterObjectHomomorphicHash = ObjectFilterPrefix + "homomorphicHash"
+)

api/acl/json.go

@@ -0,0 +1,70 @@
+package acl
+
+import (
+	acl "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (f *HeaderFilter) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(f)
+}
+
+func (f *HeaderFilter) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(f, data, new(acl.EACLRecord_Filter))
+}
+
+func (t *Target) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(t)
+}
+
+func (t *Target) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(t, data, new(acl.EACLRecord_Target))
+}
+
+func (a *APEOverride) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(a)
+}
+
+func (a *APEOverride) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(a, data, new(acl.BearerToken_Body_APEOverride))
+}
+
+func (r *Record) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(r)
+}
+
+func (r *Record) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(r, data, new(acl.EACLRecord))
+}
+
+func (t *Table) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(t)
+}
+
+func (t *Table) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(t, data, new(acl.EACLTable))
+}
+
+func (l *TokenLifetime) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(l)
+}
+
+func (l *TokenLifetime) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(l, data, new(acl.BearerToken_Body_TokenLifetime))
+}
+
+func (bt *BearerTokenBody) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(bt)
+}
+
+func (bt *BearerTokenBody) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(bt, data, new(acl.BearerToken_Body))
+}
+
+func (bt *BearerToken) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(bt)
+}
+
+func (bt *BearerToken) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(bt, data, new(acl.BearerToken))
+}

api/acl/marshal.go

@@ -0,0 +1,350 @@
+package acl
+
+import (
+	acl "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	protoutil "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	filterHeaderTypeField = 1
+	filterMatchTypeField  = 2
+	filterNameField       = 3
+	filterValueField      = 4
+
+	targetTypeField = 1
+	targetKeysField = 2
+
+	recordOperationField = 1
+	recordActionField    = 2
+	recordFiltersField   = 3
+	recordTargetsField   = 4
+
+	tableVersionField     = 1
+	tableContainerIDField = 2
+	tableRecordsField     = 3
+
+	lifetimeExpirationField     = 1
+	lifetimeNotValidBeforeField = 2
+	lifetimeIssuedAtField       = 3
+
+	tokenAPEChainsTargetField = 1
+	tokenAPEChainsChainsField = 2
+
+	bearerTokenBodyACLField        = 1
+	bearerTokenBodyOwnerField      = 2
+	bearerTokenBodyLifetimeField   = 3
+	bearerTokenBodyImpersonate     = 4
+	bearerTokenTokenAPEChainsField = 5
+
+	bearerTokenBodyField      = 1
+	bearerTokenSignatureField = 2
+)
+
+// StableMarshal marshals unified acl table structure in a protobuf
+// compatible way without field order shuffle.
+func (t *Table) StableMarshal(buf []byte) []byte {
+	if t == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, t.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(tableVersionField, buf[offset:], t.version)
+	offset += protoutil.NestedStructureMarshal(tableContainerIDField, buf[offset:], t.cid)
+
+	for i := range t.records {
+		offset += protoutil.NestedStructureMarshal(tableRecordsField, buf[offset:], &t.records[i])
+	}
+
+	return buf
+}
+
+// StableSize of acl table structure marshalled by StableMarshal function.
+func (t *Table) StableSize() (size int) {
+	if t == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(tableVersionField, t.version)
+	size += protoutil.NestedStructureSize(tableContainerIDField, t.cid)
+
+	for i := range t.records {
+		size += protoutil.NestedStructureSize(tableRecordsField, &t.records[i])
+	}
+
+	return size
+}
+
+func (t *Table) Unmarshal(data []byte) error {
+	return message.Unmarshal(t, data, new(acl.EACLTable))
+}
+
+// StableMarshal marshals unified acl record structure in a protobuf
+// compatible way without field order shuffle.
+func (r *Record) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.EnumMarshal(recordOperationField, buf[offset:], int32(r.op))
+	offset += protoutil.EnumMarshal(recordActionField, buf[offset:], int32(r.action))
+
+	for i := range r.filters {
+		offset += protoutil.NestedStructureMarshal(recordFiltersField, buf[offset:], &r.filters[i])
+	}
+
+	for i := range r.targets {
+		offset += protoutil.NestedStructureMarshal(recordTargetsField, buf[offset:], &r.targets[i])
+	}
+
+	return buf
+}
+
+// StableSize of acl record structure marshalled by StableMarshal function.
+func (r *Record) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.EnumSize(recordOperationField, int32(r.op))
+	size += protoutil.EnumSize(recordActionField, int32(r.action))
+
+	for i := range r.filters {
+		size += protoutil.NestedStructureSize(recordFiltersField, &r.filters[i])
+	}
+
+	for i := range r.targets {
+		size += protoutil.NestedStructureSize(recordTargetsField, &r.targets[i])
+	}
+
+	return size
+}
+
+func (r *Record) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(acl.EACLRecord))
+}
+
+// StableMarshal marshals unified header filter structure in a protobuf
+// compatible way without field order shuffle.
+func (f *HeaderFilter) StableMarshal(buf []byte) []byte {
+	if f == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, f.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.EnumMarshal(filterHeaderTypeField, buf[offset:], int32(f.hdrType))
+	offset += protoutil.EnumMarshal(filterMatchTypeField, buf[offset:], int32(f.matchType))
+	offset += protoutil.StringMarshal(filterNameField, buf[offset:], f.key)
+	protoutil.StringMarshal(filterValueField, buf[offset:], f.value)
+
+	return buf
+}
+
+// StableSize of header filter structure marshalled by StableMarshal function.
+func (f *HeaderFilter) StableSize() (size int) {
+	if f == nil {
+		return 0
+	}
+
+	size += protoutil.EnumSize(filterHeaderTypeField, int32(f.hdrType))
+	size += protoutil.EnumSize(filterMatchTypeField, int32(f.matchType))
+	size += protoutil.StringSize(filterNameField, f.key)
+	size += protoutil.StringSize(filterValueField, f.value)
+
+	return size
+}
+
+func (f *HeaderFilter) Unmarshal(data []byte) error {
+	return message.Unmarshal(f, data, new(acl.EACLRecord_Filter))
+}
+
+// StableMarshal marshals unified role info structure in a protobuf
+// compatible way without field order shuffle.
+func (t *Target) StableMarshal(buf []byte) []byte {
+	if t == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, t.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.EnumMarshal(targetTypeField, buf[offset:], int32(t.role))
+	protoutil.RepeatedBytesMarshal(targetKeysField, buf[offset:], t.keys)
+
+	return buf
+}
+
+// StableSize of role info structure marshalled by StableMarshal function.
+func (t *Target) StableSize() (size int) {
+	if t == nil {
+		return 0
+	}
+
+	size += protoutil.EnumSize(targetTypeField, int32(t.role))
+	size += protoutil.RepeatedBytesSize(targetKeysField, t.keys)
+
+	return size
+}
+
+func (t *Target) Unmarshal(data []byte) error {
+	return message.Unmarshal(t, data, new(acl.EACLRecord_Target))
+}
+
+func (l *TokenLifetime) StableMarshal(buf []byte) []byte {
+	if l == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, l.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.UInt64Marshal(lifetimeExpirationField, buf[offset:], l.exp)
+	offset += protoutil.UInt64Marshal(lifetimeNotValidBeforeField, buf[offset:], l.nbf)
+	protoutil.UInt64Marshal(lifetimeIssuedAtField, buf[offset:], l.iat)
+
+	return buf
+}
+
+func (l *TokenLifetime) StableSize() (size int) {
+	if l == nil {
+		return 0
+	}
+
+	size += protoutil.UInt64Size(lifetimeExpirationField, l.exp)
+	size += protoutil.UInt64Size(lifetimeNotValidBeforeField, l.nbf)
+	size += protoutil.UInt64Size(lifetimeIssuedAtField, l.iat)
+
+	return size
+}
+
+func (l *TokenLifetime) Unmarshal(data []byte) error {
+	return message.Unmarshal(l, data, new(acl.BearerToken_Body_TokenLifetime))
+}
+
+func (c *APEOverride) StableMarshal(buf []byte) []byte {
+	if c == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, c.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(tokenAPEChainsTargetField, buf[offset:], c.target)
+	for i := range c.chains {
+		offset += protoutil.NestedStructureMarshal(tokenAPEChainsChainsField, buf[offset:], c.chains[i])
+	}
+
+	return buf
+}
+
+func (c *APEOverride) StableSize() (size int) {
+	if c == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(tokenAPEChainsTargetField, c.target)
+	for i := range c.chains {
+		size += protoutil.NestedStructureSize(tokenAPEChainsChainsField, c.chains[i])
+	}
+
+	return size
+}
+
+func (c *APEOverride) Unmarshal(data []byte) error {
+	return message.Unmarshal(c, data, new(acl.BearerToken_Body_APEOverride))
+}
+
+func (bt *BearerTokenBody) StableMarshal(buf []byte) []byte {
+	if bt == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, bt.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(bearerTokenBodyACLField, buf[offset:], bt.eacl)
+	offset += protoutil.NestedStructureMarshal(bearerTokenBodyOwnerField, buf[offset:], bt.ownerID)
+	offset += protoutil.NestedStructureMarshal(bearerTokenBodyLifetimeField, buf[offset:], bt.lifetime)
+	offset += protoutil.BoolMarshal(bearerTokenBodyImpersonate, buf[offset:], bt.impersonate)
+	protoutil.NestedStructureMarshal(bearerTokenTokenAPEChainsField, buf[offset:], bt.apeOverride)
+
+	return buf
+}
+
+func (bt *BearerTokenBody) StableSize() (size int) {
+	if bt == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(bearerTokenBodyACLField, bt.eacl)
+	size += protoutil.NestedStructureSize(bearerTokenBodyOwnerField, bt.ownerID)
+	size += protoutil.NestedStructureSize(bearerTokenBodyLifetimeField, bt.lifetime)
+	size += protoutil.BoolSize(bearerTokenBodyImpersonate, bt.impersonate)
+	size += protoutil.NestedStructureSize(bearerTokenTokenAPEChainsField, bt.apeOverride)
+
+	return size
+}
+
+func (bt *BearerTokenBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(bt, data, new(acl.BearerToken_Body))
+}
+
+func (bt *BearerToken) StableMarshal(buf []byte) []byte {
+	if bt == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, bt.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(bearerTokenBodyField, buf[offset:], bt.body)
+	protoutil.NestedStructureMarshal(bearerTokenSignatureField, buf[offset:], bt.sig)
+
+	return buf
+}
+
+func (bt *BearerToken) StableSize() (size int) {
+	if bt == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(bearerTokenBodyField, bt.body)
+	size += protoutil.NestedStructureSize(bearerTokenSignatureField, bt.sig)
+
+	return size
+}
+
+func (bt *BearerToken) Unmarshal(data []byte) error {
+	return message.Unmarshal(bt, data, new(acl.BearerToken))
+}

api/acl/message_test.go

@@ -0,0 +1,21 @@
+package acl_test
+
+import (
+	"testing"
+
+	acltest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessageConvert(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return acltest.GenerateFilter(empty) },
+		func(empty bool) message.Message { return acltest.GenerateTarget(empty) },
+		func(empty bool) message.Message { return acltest.GenerateRecord(empty) },
+		func(empty bool) message.Message { return acltest.GenerateTable(empty) },
+		func(empty bool) message.Message { return acltest.GenerateTokenLifetime(empty) },
+		func(empty bool) message.Message { return acltest.GenerateBearerTokenBody(empty) },
+		func(empty bool) message.Message { return acltest.GenerateBearerToken(empty) },
+	)
+}

api/acl/string.go

@@ -0,0 +1,98 @@
+package acl
+
+import (
+	acl "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl/grpc"
+)
+
+// String returns string representation of Action.
+func (x Action) String() string {
+	return ActionToGRPCField(x).String()
+}
+
+// FromString parses Action from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *Action) FromString(s string) bool {
+	g, ok := acl.Action_value[s]
+	if ok {
+		*x = ActionFromGRPCField(acl.Action(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of Role.
+func (x Role) String() string {
+	return RoleToGRPCField(x).String()
+}
+
+// FromString parses Role from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *Role) FromString(s string) bool {
+	g, ok := acl.Role_value[s]
+
+	if ok {
+		*x = RoleFromGRPCField(acl.Role(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of Operation.
+func (x Operation) String() string {
+	return OperationToGRPCField(x).String()
+}
+
+// FromString parses Operation from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *Operation) FromString(s string) bool {
+	g, ok := acl.Operation_value[s]
+	if ok {
+		*x = OperationFromGRPCField(acl.Operation(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of MatchType.
+func (x MatchType) String() string {
+	return MatchTypeToGRPCField(x).String()
+}
+
+// FromString parses MatchType from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *MatchType) FromString(s string) bool {
+	g, ok := acl.MatchType_value[s]
+
+	if ok {
+		*x = MatchTypeFromGRPCField(acl.MatchType(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of HeaderType.
+func (x HeaderType) String() string {
+	return HeaderTypeToGRPCField(x).String()
+}
+
+// FromString parses HeaderType from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *HeaderType) FromString(s string) bool {
+	g, ok := acl.HeaderType_value[s]
+
+	if ok {
+		*x = HeaderTypeFromGRPCField(acl.HeaderType(g))
+	}
+
+	return ok
+}

api/acl/test/generate.go

@@ -0,0 +1,144 @@
+package acltest
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/acl"
+	apetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/test"
+	accountingtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/test"
+)
+
+func GenerateBearerToken(empty bool) *acl.BearerToken {
+	m := new(acl.BearerToken)
+
+	if !empty {
+		m.SetBody(GenerateBearerTokenBody(false))
+	}
+
+	m.SetSignature(accountingtest.GenerateSignature(empty))
+
+	return m
+}
+
+func GenerateBearerTokenBody(empty bool) *acl.BearerTokenBody {
+	m := new(acl.BearerTokenBody)
+
+	if !empty {
+		m.SetOwnerID(accountingtest.GenerateOwnerID(false))
+		m.SetLifetime(GenerateTokenLifetime(false))
+		m.SetAPEOverride(GenerateAPEOverride(empty))
+	}
+
+	return m
+}
+
+func GenerateAPEOverride(empty bool) *acl.APEOverride {
+	var m *acl.APEOverride
+
+	if !empty {
+		m = new(acl.APEOverride)
+		m.SetTarget(apetest.GenerateChainTarget(empty))
+		m.SetChains(apetest.GenerateRawChains(false, 3))
+	}
+
+	return m
+}
+
+func GenerateTable(empty bool) *acl.Table {
+	m := new(acl.Table)
+
+	if !empty {
+		m.SetRecords(GenerateRecords(false))
+		m.SetContainerID(accountingtest.GenerateContainerID(false))
+	}
+
+	m.SetVersion(accountingtest.GenerateVersion(empty))
+
+	return m
+}
+
+func GenerateRecords(empty bool) []acl.Record {
+	var rs []acl.Record
+
+	if !empty {
+		rs = append(rs,
+			*GenerateRecord(false),
+			*GenerateRecord(false),
+		)
+	}
+
+	return rs
+}
+
+func GenerateRecord(empty bool) *acl.Record {
+	m := new(acl.Record)
+
+	if !empty {
+		m.SetAction(acl.ActionAllow)
+		m.SetOperation(acl.OperationGet)
+		m.SetFilters(GenerateFilters(false))
+		m.SetTargets(GenerateTargets(false))
+	}
+
+	return m
+}
+
+func GenerateFilters(empty bool) []acl.HeaderFilter {
+	var fs []acl.HeaderFilter
+
+	if !empty {
+		fs = append(fs,
+			*GenerateFilter(false),
+			*GenerateFilter(false),
+		)
+	}
+
+	return fs
+}
+
+func GenerateFilter(empty bool) *acl.HeaderFilter {
+	m := new(acl.HeaderFilter)
+
+	if !empty {
+		m.SetKey("key")
+		m.SetValue("val")
+		m.SetHeaderType(acl.HeaderTypeRequest)
+		m.SetMatchType(acl.MatchTypeStringEqual)
+	}
+
+	return m
+}
+
+func GenerateTargets(empty bool) []acl.Target {
+	var ts []acl.Target
+
+	if !empty {
+		ts = append(ts,
+			*GenerateTarget(false),
+			*GenerateTarget(false),
+		)
+	}
+
+	return ts
+}
+
+func GenerateTarget(empty bool) *acl.Target {
+	m := new(acl.Target)
+
+	if !empty {
+		m.SetRole(acl.RoleSystem)
+		m.SetKeys([][]byte{{1}, {2}})
+	}
+
+	return m
+}
+
+func GenerateTokenLifetime(empty bool) *acl.TokenLifetime {
+	m := new(acl.TokenLifetime)
+
+	if !empty {
+		m.SetExp(1)
+		m.SetIat(2)
+		m.SetExp(3)
+	}
+
+	return m
+}

api/acl/types.go

@@ -0,0 +1,426 @@
+package acl
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+)
+
+// HeaderFilter is a unified structure of FilterInfo
+// message from proto definition.
+type HeaderFilter struct {
+	hdrType HeaderType
+
+	matchType MatchType
+
+	key, value string
+}
+
+// Target is a unified structure of Target
+// message from proto definition.
+type Target struct {
+	role Role
+
+	keys [][]byte
+}
+
+// Record is a unified structure of EACLRecord
+// message from proto definition.
+type Record struct {
+	op Operation
+
+	action Action
+
+	filters []HeaderFilter
+
+	targets []Target
+}
+
+// Table is a unified structure of EACLTable
+// message from proto definition.
+type Table struct {
+	version *refs.Version
+
+	cid *refs.ContainerID
+
+	records []Record
+}
+
+type TokenLifetime struct {
+	exp, nbf, iat uint64
+}
+
+type APEOverride struct {
+	target *ape.ChainTarget
+
+	chains []*ape.Chain
+}
+
+type BearerTokenBody struct {
+	eacl *Table
+
+	ownerID *refs.OwnerID
+
+	lifetime *TokenLifetime
+
+	apeOverride *APEOverride
+
+	impersonate bool
+}
+
+type BearerToken struct {
+	body *BearerTokenBody
+
+	sig *refs.Signature
+}
+
+// Target is a unified enum of MatchType enum from proto definition.
+type MatchType uint32
+
+// HeaderType is a unified enum of HeaderType enum from proto definition.
+type HeaderType uint32
+
+// Action is a unified enum of Action enum from proto definition.
+type Action uint32
+
+// Operation is a unified enum of Operation enum from proto definition.
+type Operation uint32
+
+// Role is a unified enum of Role enum from proto definition.
+type Role uint32
+
+const (
+	MatchTypeUnknown MatchType = iota
+	MatchTypeStringEqual
+	MatchTypeStringNotEqual
+)
+
+const (
+	HeaderTypeUnknown HeaderType = iota
+	HeaderTypeRequest
+	HeaderTypeObject
+	HeaderTypeService
+)
+
+const (
+	ActionUnknown Action = iota
+	ActionAllow
+	ActionDeny
+)
+
+const (
+	OperationUnknown Operation = iota
+	OperationGet
+	OperationHead
+	OperationPut
+	OperationDelete
+	OperationSearch
+	OperationRange
+	OperationRangeHash
+)
+
+const (
+	RoleUnknown Role = iota
+	RoleUser
+	RoleSystem
+	RoleOthers
+)
+
+func (f *HeaderFilter) GetHeaderType() HeaderType {
+	if f != nil {
+		return f.hdrType
+	}
+
+	return HeaderTypeUnknown
+}
+
+func (f *HeaderFilter) SetHeaderType(v HeaderType) {
+	f.hdrType = v
+}
+
+func (f *HeaderFilter) GetMatchType() MatchType {
+	if f != nil {
+		return f.matchType
+	}
+
+	return MatchTypeUnknown
+}
+
+func (f *HeaderFilter) SetMatchType(v MatchType) {
+	f.matchType = v
+}
+
+func (f *HeaderFilter) GetKey() string {
+	if f != nil {
+		return f.key
+	}
+
+	return ""
+}
+
+func (f *HeaderFilter) SetKey(v string) {
+	f.key = v
+}
+
+func (f *HeaderFilter) GetValue() string {
+	if f != nil {
+		return f.value
+	}
+
+	return ""
+}
+
+func (f *HeaderFilter) SetValue(v string) {
+	f.value = v
+}
+
+func (t *Target) GetRole() Role {
+	if t != nil {
+		return t.role
+	}
+
+	return RoleUnknown
+}
+
+func (t *Target) SetRole(v Role) {
+	t.role = v
+}
+
+func (t *Target) GetKeys() [][]byte {
+	if t != nil {
+		return t.keys
+	}
+
+	return nil
+}
+
+func (t *Target) SetKeys(v [][]byte) {
+	t.keys = v
+}
+
+func (r *Record) GetOperation() Operation {
+	if r != nil {
+		return r.op
+	}
+
+	return OperationUnknown
+}
+
+func (r *Record) SetOperation(v Operation) {
+	r.op = v
+}
+
+func (r *Record) GetAction() Action {
+	if r != nil {
+		return r.action
+	}
+
+	return ActionUnknown
+}
+
+func (r *Record) SetAction(v Action) {
+	r.action = v
+}
+
+func (r *Record) GetFilters() []HeaderFilter {
+	if r != nil {
+		return r.filters
+	}
+
+	return nil
+}
+
+func (r *Record) SetFilters(v []HeaderFilter) {
+	r.filters = v
+}
+
+func (r *Record) GetTargets() []Target {
+	if r != nil {
+		return r.targets
+	}
+
+	return nil
+}
+
+func (r *Record) SetTargets(v []Target) {
+	r.targets = v
+}
+
+func (t *Table) GetVersion() *refs.Version {
+	if t != nil {
+		return t.version
+	}
+
+	return nil
+}
+
+func (t *Table) SetVersion(v *refs.Version) {
+	t.version = v
+}
+
+func (t *Table) GetContainerID() *refs.ContainerID {
+	if t != nil {
+		return t.cid
+	}
+
+	return nil
+}
+
+func (t *Table) SetContainerID(v *refs.ContainerID) {
+	t.cid = v
+}
+
+func (t *Table) GetRecords() []Record {
+	if t != nil {
+		return t.records
+	}
+
+	return nil
+}
+
+func (t *Table) SetRecords(v []Record) {
+	t.records = v
+}
+
+func (l *TokenLifetime) GetExp() uint64 {
+	if l != nil {
+		return l.exp
+	}
+
+	return 0
+}
+
+func (l *TokenLifetime) SetExp(v uint64) {
+	l.exp = v
+}
+
+func (l *TokenLifetime) GetNbf() uint64 {
+	if l != nil {
+		return l.nbf
+	}
+
+	return 0
+}
+
+func (l *TokenLifetime) SetNbf(v uint64) {
+	l.nbf = v
+}
+
+func (l *TokenLifetime) GetIat() uint64 {
+	if l != nil {
+		return l.iat
+	}
+
+	return 0
+}
+
+func (l *TokenLifetime) SetIat(v uint64) {
+	l.iat = v
+}
+
+func (bt *BearerTokenBody) GetEACL() *Table {
+	if bt != nil {
+		return bt.eacl
+	}
+
+	return nil
+}
+
+func (bt *BearerTokenBody) SetEACL(v *Table) {
+	bt.eacl = v
+}
+
+func (t *APEOverride) GetTarget() *ape.ChainTarget {
+	if t == nil {
+		return nil
+	}
+
+	return t.target
+}
+
+func (t *APEOverride) GetChains() []*ape.Chain {
+	if t == nil {
+		return nil
+	}
+
+	return t.chains
+}
+
+func (t *APEOverride) SetTarget(v *ape.ChainTarget) {
+	t.target = v
+}
+
+func (t *APEOverride) SetChains(v []*ape.Chain) {
+	t.chains = v
+}
+
+func (bt *BearerTokenBody) GetAPEOverride() *APEOverride {
+	if bt != nil {
+		return bt.apeOverride
+	}
+
+	return nil
+}
+
+func (bt *BearerTokenBody) SetAPEOverride(v *APEOverride) {
+	bt.apeOverride = v
+}
+
+func (bt *BearerTokenBody) GetOwnerID() *refs.OwnerID {
+	if bt != nil {
+		return bt.ownerID
+	}
+
+	return nil
+}
+
+func (bt *BearerTokenBody) SetOwnerID(v *refs.OwnerID) {
+	bt.ownerID = v
+}
+
+func (bt *BearerTokenBody) GetLifetime() *TokenLifetime {
+	if bt != nil {
+		return bt.lifetime
+	}
+
+	return nil
+}
+
+func (bt *BearerTokenBody) SetLifetime(v *TokenLifetime) {
+	bt.lifetime = v
+}
+
+func (bt *BearerTokenBody) GetImpersonate() bool {
+	if bt != nil {
+		return bt.impersonate
+	}
+
+	return false
+}
+
+func (bt *BearerTokenBody) SetImpersonate(v bool) {
+	bt.impersonate = v
+}
+
+func (bt *BearerToken) GetBody() *BearerTokenBody {
+	if bt != nil {
+		return bt.body
+	}
+
+	return nil
+}
+
+func (bt *BearerToken) SetBody(v *BearerTokenBody) {
+	bt.body = v
+}
+
+func (bt *BearerToken) GetSignature() *refs.Signature {
+	if bt != nil {
+		return bt.sig
+	}
+
+	return nil
+}
+
+func (bt *BearerToken) SetSignature(v *refs.Signature) {
+	bt.sig = v
+}

api/ape/convert.go

@@ -0,0 +1,131 @@
+package ape
+
+import (
+	"fmt"
+
+	ape "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func TargetTypeToGRPCField(typ TargetType) ape.TargetType {
+	switch typ {
+	case TargetTypeNamespace:
+		return ape.TargetType_NAMESPACE
+	case TargetTypeContainer:
+		return ape.TargetType_CONTAINER
+	case TargetTypeUser:
+		return ape.TargetType_USER
+	case TargetTypeGroup:
+		return ape.TargetType_GROUP
+	default:
+		return ape.TargetType_UNDEFINED
+	}
+}
+
+func TargetTypeFromGRPCField(typ ape.TargetType) TargetType {
+	switch typ {
+	case ape.TargetType_NAMESPACE:
+		return TargetTypeNamespace
+	case ape.TargetType_CONTAINER:
+		return TargetTypeContainer
+	case ape.TargetType_USER:
+		return TargetTypeUser
+	case ape.TargetType_GROUP:
+		return TargetTypeGroup
+	default:
+		return TargetTypeUndefined
+	}
+}
+
+func TargetTypeToGRPC(typ TargetType) ape.TargetType {
+	return ape.TargetType(typ)
+}
+
+func TargetTypeFromGRPC(typ ape.TargetType) TargetType {
+	return TargetType(typ)
+}
+
+func (v2 *ChainTarget) ToGRPCMessage() grpc.Message {
+	var mgrpc *ape.ChainTarget
+
+	if v2 != nil {
+		mgrpc = new(ape.ChainTarget)
+
+		mgrpc.SetType(TargetTypeToGRPC(v2.GetTargetType()))
+		mgrpc.SetName(v2.GetName())
+	}
+
+	return mgrpc
+}
+
+func (v2 *ChainTarget) FromGRPCMessage(m grpc.Message) error {
+	mgrpc, ok := m.(*ape.ChainTarget)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, mgrpc)
+	}
+
+	v2.SetTargetType(TargetTypeFromGRPC(mgrpc.GetType()))
+	v2.SetName(mgrpc.GetName())
+
+	return nil
+}
+
+func (v2 *ChainRaw) ToGRPCMessage() grpc.Message {
+	var mgrpc *ape.Chain_Raw
+
+	if v2 != nil {
+		mgrpc = new(ape.Chain_Raw)
+		mgrpc.Raw = v2.GetRaw()
+	}
+
+	return mgrpc
+}
+
+func (v2 *ChainRaw) FromGRPCMessage(m grpc.Message) error {
+	mgrpc, ok := m.(*ape.Chain_Raw)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, mgrpc)
+	}
+
+	v2.SetRaw(mgrpc.Raw)
+
+	return nil
+}
+
+func (v2 *Chain) ToGRPCMessage() grpc.Message {
+	var mgrpc *ape.Chain
+
+	if v2 != nil {
+		mgrpc = new(ape.Chain)
+
+		switch chainKind := v2.GetKind().(type) {
+		default:
+			panic(fmt.Sprintf("unsupported chain kind: %T", chainKind))
+		case *ChainRaw:
+			mgrpc.SetRaw(chainKind.GetRaw())
+		}
+	}
+
+	return mgrpc
+}
+
+func (v2 *Chain) FromGRPCMessage(m grpc.Message) error {
+	mgrpc, ok := m.(*ape.Chain)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, mgrpc)
+	}
+
+	switch chainKind := mgrpc.GetKind().(type) {
+	default:
+		return fmt.Errorf("unsupported chain kind: %T", chainKind)
+	case *ape.Chain_Raw:
+		chainRaw := new(ChainRaw)
+		if err := chainRaw.FromGRPCMessage(chainKind); err != nil {
+			return err
+		}
+		v2.SetKind(chainRaw)
+	}
+
+	return nil
+}

api/ape/json.go

@@ -0,0 +1,14 @@
+package ape
+
+import (
+	ape "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (t *ChainTarget) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(t)
+}
+
+func (t *ChainTarget) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(t, data, new(ape.ChainTarget))
+}

api/ape/marshal.go

@@ -0,0 +1,92 @@
+package ape
+
+import (
+	"fmt"
+
+	ape "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	chainTargetTargetTypeField = 1
+	chainTargetNameField       = 2
+
+	chainRawField = 1
+)
+
+func (t *ChainTarget) StableSize() (size int) {
+	if t == nil {
+		return 0
+	}
+
+	size += proto.EnumSize(chainTargetTargetTypeField, int32(t.targeType))
+	size += proto.StringSize(chainTargetNameField, t.name)
+
+	return size
+}
+
+func (t *ChainTarget) StableMarshal(buf []byte) []byte {
+	if t == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, t.StableSize())
+	}
+
+	var offset int
+
+	offset += proto.EnumMarshal(chainTargetTargetTypeField, buf[offset:], int32(t.targeType))
+	proto.StringMarshal(chainTargetNameField, buf[offset:], t.name)
+
+	return buf
+}
+
+func (t *ChainTarget) Unmarshal(data []byte) error {
+	return message.Unmarshal(t, data, new(ape.ChainTarget))
+}
+
+func (c *Chain) StableSize() (size int) {
+	if c == nil {
+		return 0
+	}
+
+	switch v := c.GetKind().(type) {
+	case *ChainRaw:
+		if v != nil {
+			size += proto.BytesSize(chainRawField, v.GetRaw())
+		}
+	default:
+		panic(fmt.Sprintf("unsupported chain kind: %T", v))
+	}
+
+	return size
+}
+
+func (c *Chain) StableMarshal(buf []byte) []byte {
+	if c == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, c.StableSize())
+	}
+
+	var offset int
+
+	switch v := c.GetKind().(type) {
+	case *ChainRaw:
+		if v != nil {
+			proto.BytesMarshal(chainRawField, buf[offset:], v.GetRaw())
+		}
+	default:
+		panic(fmt.Sprintf("unsupported chain kind: %T", v))
+	}
+
+	return buf
+}
+
+func (c *Chain) Unmarshal(data []byte) error {
+	return message.Unmarshal(c, data, new(ape.Chain))
+}

api/ape/message_test.go

@@ -0,0 +1,15 @@
+package ape_test
+
+import (
+	"testing"
+
+	apetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessageConvert(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return apetest.GenerateChainTarget(empty) },
+	)
+}

api/ape/string.go

@@ -0,0 +1,18 @@
+package ape
+
+import (
+	apegrpc "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+)
+
+func (tt TargetType) String() string {
+	return TargetTypeToGRPCField(tt).String()
+}
+
+func (tt *TargetType) FromString(s string) bool {
+	i, ok := apegrpc.TargetType_value[s]
+	if ok {
+		*tt = TargetType(i)
+	}
+
+	return ok
+}

api/ape/test/generate.go

@@ -0,0 +1,71 @@
+package test
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+)
+
+func GenerateRawChains(empty bool, n int) []*ape.Chain {
+	if empty {
+		return []*ape.Chain{}
+	}
+
+	res := make([]*ape.Chain, n)
+	for i := range res {
+		res[i] = GenerateRawChain(empty)
+	}
+	return res
+}
+
+func GenerateRawChain(empty bool) *ape.Chain {
+	chRaw := new(ape.ChainRaw)
+
+	if empty {
+		chRaw.SetRaw([]byte("{}"))
+	} else {
+		chRaw.SetRaw([]byte(`{
+			"ID": "",
+			"Rules": [
+			  {
+				"Status": "Allow",
+				"Actions": {
+				  "Inverted": false,
+				  "Names": [
+					"GetObject"
+				  ]
+				},
+				"Resources": {
+				  "Inverted": false,
+				  "Names": [
+					"native:object/*"
+				  ]
+				},
+				"Any": false,
+				"Condition": [
+				  {
+					"Op": "StringEquals",
+					"Object": "Resource",
+					"Key": "Department",
+					"Value": "HR"
+				  }
+				]
+			  }
+			],
+			"MatchType": "DenyPriority"
+			}`))
+	}
+
+	ch := new(ape.Chain)
+	ch.SetKind(chRaw)
+	return ch
+}
+
+func GenerateChainTarget(empty bool) *ape.ChainTarget {
+	m := new(ape.ChainTarget)
+
+	if !empty {
+		m.SetTargetType(ape.TargetTypeContainer)
+		m.SetName("BzQw5HH3feoxFDD5tCT87Y1726qzgLfxEE7wgtoRzB3R")
+	}
+
+	return m
+}

api/ape/types.go

@@ -0,0 +1,79 @@
+package ape
+
+type TargetType uint32
+
+const (
+	TargetTypeUndefined TargetType = iota
+	TargetTypeNamespace
+	TargetTypeContainer
+	TargetTypeUser
+	TargetTypeGroup
+)
+
+type ChainTarget struct {
+	targeType TargetType
+
+	name string
+}
+
+func (ct *ChainTarget) SetTargetType(targeType TargetType) {
+	ct.targeType = targeType
+}
+
+func (ct *ChainTarget) SetName(name string) {
+	ct.name = name
+}
+
+func (ct *ChainTarget) GetTargetType() TargetType {
+	if ct != nil {
+		return ct.targeType
+	}
+
+	return 0
+}
+
+func (ct *ChainTarget) GetName() string {
+	if ct != nil {
+		return ct.name
+	}
+
+	return ""
+}
+
+type chainKind interface {
+	isChainKind()
+}
+
+type Chain struct {
+	kind chainKind
+}
+
+func (c *Chain) SetKind(kind chainKind) {
+	c.kind = kind
+}
+
+func (c *Chain) GetKind() chainKind {
+	if c == nil {
+		return nil
+	}
+
+	return c.kind
+}
+
+type ChainRaw struct {
+	Raw []byte
+}
+
+func (*ChainRaw) isChainKind() {}
+
+func (c *ChainRaw) SetRaw(raw []byte) {
+	c.Raw = raw
+}
+
+func (c *ChainRaw) GetRaw() []byte {
+	if c == nil {
+		return nil
+	}
+
+	return c.Raw
+}

api/apemanager/convert.go

@@ -0,0 +1,358 @@
+package apemanager
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+	apeGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/grpc"
+	apemanager "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/apemanager/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (reqBody *AddChainRequestBody) ToGRPCMessage() grpc.Message {
+	var reqBodygrpc *apemanager.AddChainRequest_Body
+
+	if reqBody != nil {
+		reqBodygrpc = new(apemanager.AddChainRequest_Body)
+
+		reqBodygrpc.SetTarget(reqBody.GetTarget().ToGRPCMessage().(*apeGRPC.ChainTarget))
+		reqBodygrpc.SetChain(reqBody.GetChain().ToGRPCMessage().(*apeGRPC.Chain))
+	}
+
+	return reqBodygrpc
+}
+
+func (reqBody *AddChainRequestBody) FromGRPCMessage(m grpc.Message) error {
+	reqBodygrpc, ok := m.(*apemanager.AddChainRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqBodygrpc)
+	}
+
+	if targetgrpc := reqBodygrpc.GetTarget(); targetgrpc != nil {
+		reqBody.target = new(ape.ChainTarget)
+		if err := reqBody.target.FromGRPCMessage(targetgrpc); err != nil {
+			return err
+		}
+	}
+
+	if chaingrpc := reqBodygrpc.GetChain(); chaingrpc != nil {
+		reqBody.chain = new(ape.Chain)
+		if err := reqBody.GetChain().FromGRPCMessage(chaingrpc); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (req *AddChainRequest) ToGRPCMessage() grpc.Message {
+	var reqgrpc *apemanager.AddChainRequest
+
+	if req != nil {
+		reqgrpc = new(apemanager.AddChainRequest)
+
+		reqgrpc.SetBody(req.GetBody().ToGRPCMessage().(*apemanager.AddChainRequest_Body))
+		req.RequestHeaders.ToMessage(reqgrpc)
+	}
+
+	return reqgrpc
+}
+
+func (req *AddChainRequest) FromGRPCMessage(m grpc.Message) error {
+	reqgrpc, ok := m.(*apemanager.AddChainRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqgrpc)
+	}
+
+	if reqBodygrpc := reqgrpc.GetBody(); reqBodygrpc != nil {
+		req.body = new(AddChainRequestBody)
+		if err := req.body.FromGRPCMessage(reqBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return req.RequestHeaders.FromMessage(reqgrpc)
+}
+
+func (respBody *AddChainResponseBody) ToGRPCMessage() grpc.Message {
+	var respBodygrpc *apemanager.AddChainResponse_Body
+
+	if respBody != nil {
+		respBodygrpc = new(apemanager.AddChainResponse_Body)
+
+		respBodygrpc.SetChainId(respBody.GetChainID())
+	}
+
+	return respBodygrpc
+}
+
+func (respBody *AddChainResponseBody) FromGRPCMessage(m grpc.Message) error {
+	respBodygrpc, ok := m.(*apemanager.AddChainResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respBodygrpc)
+	}
+
+	respBody.SetChainID(respBodygrpc.GetChainId())
+
+	return nil
+}
+
+func (resp *AddChainResponse) ToGRPCMessage() grpc.Message {
+	var respgrpc *apemanager.AddChainResponse
+
+	if resp != nil {
+		respgrpc = new(apemanager.AddChainResponse)
+
+		respgrpc.SetBody(resp.body.ToGRPCMessage().(*apemanager.AddChainResponse_Body))
+		resp.ResponseHeaders.ToMessage(respgrpc)
+	}
+
+	return respgrpc
+}
+
+func (resp *AddChainResponse) FromGRPCMessage(m grpc.Message) error {
+	respgrpc, ok := m.(*apemanager.AddChainResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respgrpc)
+	}
+
+	if respBodygrpc := respgrpc.GetBody(); respBodygrpc != nil {
+		resp.body = new(AddChainResponseBody)
+		if err := resp.body.FromGRPCMessage(respBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return resp.ResponseHeaders.FromMessage(respgrpc)
+}
+
+func (reqBody *RemoveChainRequestBody) ToGRPCMessage() grpc.Message {
+	var reqBodygrpc *apemanager.RemoveChainRequest_Body
+
+	if reqBody != nil {
+		reqBodygrpc = new(apemanager.RemoveChainRequest_Body)
+
+		reqBodygrpc.SetTarget(reqBody.target.ToGRPCMessage().(*apeGRPC.ChainTarget))
+		reqBodygrpc.SetChainId(reqBody.GetChainID())
+	}
+
+	return reqBodygrpc
+}
+
+func (reqBody *RemoveChainRequestBody) FromGRPCMessage(m grpc.Message) error {
+	reqBodygrpc, ok := m.(*apemanager.RemoveChainRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqBodygrpc)
+	}
+
+	if targetgrpc := reqBodygrpc.GetTarget(); targetgrpc != nil {
+		reqBody.target = new(ape.ChainTarget)
+		if err := reqBody.target.FromGRPCMessage(targetgrpc); err != nil {
+			return err
+		}
+	}
+
+	reqBody.SetChainID(reqBodygrpc.GetChainId())
+
+	return nil
+}
+
+func (req *RemoveChainRequest) ToGRPCMessage() grpc.Message {
+	var reqgrpc *apemanager.RemoveChainRequest
+
+	if req != nil {
+		reqgrpc = new(apemanager.RemoveChainRequest)
+
+		reqgrpc.SetBody(req.body.ToGRPCMessage().(*apemanager.RemoveChainRequest_Body))
+		req.RequestHeaders.ToMessage(reqgrpc)
+	}
+
+	return reqgrpc
+}
+
+func (req *RemoveChainRequest) FromGRPCMessage(m grpc.Message) error {
+	reqgrpc, ok := m.(*apemanager.RemoveChainRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqgrpc)
+	}
+
+	if reqBodygrpc := reqgrpc.GetBody(); reqBodygrpc != nil {
+		req.body = new(RemoveChainRequestBody)
+		if err := req.body.FromGRPCMessage(reqBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return req.RequestHeaders.FromMessage(reqgrpc)
+}
+
+func (respBody *RemoveChainResponseBody) ToGRPCMessage() grpc.Message {
+	var respBodygrpc *apemanager.RemoveChainResponse_Body
+
+	if respBody != nil {
+		respBodygrpc = new(apemanager.RemoveChainResponse_Body)
+	}
+
+	return respBodygrpc
+}
+
+func (respBody *RemoveChainResponseBody) FromGRPCMessage(m grpc.Message) error {
+	respBodygrpc, ok := m.(*apemanager.RemoveChainResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respBodygrpc)
+	}
+
+	return nil
+}
+
+func (resp *RemoveChainResponse) ToGRPCMessage() grpc.Message {
+	var respgrpc *apemanager.RemoveChainResponse
+
+	if resp != nil {
+		respgrpc = new(apemanager.RemoveChainResponse)
+
+		respgrpc.SetBody(resp.body.ToGRPCMessage().(*apemanager.RemoveChainResponse_Body))
+		resp.ResponseHeaders.ToMessage(respgrpc)
+	}
+
+	return respgrpc
+}
+
+func (resp *RemoveChainResponse) FromGRPCMessage(m grpc.Message) error {
+	respgrpc, ok := m.(*apemanager.RemoveChainResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respgrpc)
+	}
+
+	if respBodygrpc := respgrpc.GetBody(); respBodygrpc != nil {
+		resp.body = new(RemoveChainResponseBody)
+		if err := resp.body.FromGRPCMessage(respBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return resp.ResponseHeaders.FromMessage(respgrpc)
+}
+
+func (reqBody *ListChainsRequestBody) ToGRPCMessage() grpc.Message {
+	var reqBodygrpc *apemanager.ListChainsRequest_Body
+
+	if reqBody != nil {
+		reqBodygrpc = new(apemanager.ListChainsRequest_Body)
+
+		reqBodygrpc.SetTarget(reqBody.target.ToGRPCMessage().(*apeGRPC.ChainTarget))
+	}
+
+	return reqBodygrpc
+}
+
+func (reqBody *ListChainsRequestBody) FromGRPCMessage(m grpc.Message) error {
+	reqBodygrpc, ok := m.(*apemanager.ListChainsRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqBodygrpc)
+	}
+
+	if targetgrpc := reqBodygrpc.GetTarget(); targetgrpc != nil {
+		reqBody.target = new(ape.ChainTarget)
+		if err := reqBody.target.FromGRPCMessage(targetgrpc); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (req *ListChainsRequest) ToGRPCMessage() grpc.Message {
+	var reqgrpc *apemanager.ListChainsRequest
+
+	if req != nil {
+		reqgrpc = new(apemanager.ListChainsRequest)
+
+		reqgrpc.SetBody(req.body.ToGRPCMessage().(*apemanager.ListChainsRequest_Body))
+		req.RequestHeaders.ToMessage(reqgrpc)
+	}
+
+	return reqgrpc
+}
+
+func (req *ListChainsRequest) FromGRPCMessage(m grpc.Message) error {
+	reqgrpc, ok := m.(*apemanager.ListChainsRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, reqgrpc)
+	}
+
+	if reqBodygrpc := reqgrpc.GetBody(); reqBodygrpc != nil {
+		req.body = new(ListChainsRequestBody)
+		if err := req.body.FromGRPCMessage(reqBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return req.RequestHeaders.FromMessage(reqgrpc)
+}
+
+func (respBody *ListChainsResponseBody) ToGRPCMessage() grpc.Message {
+	var respBodygrpc *apemanager.ListChainsResponse_Body
+
+	if respBody != nil {
+		respBodygrpc = new(apemanager.ListChainsResponse_Body)
+
+		chainsgrpc := make([]*apeGRPC.Chain, 0, len(respBody.GetChains()))
+		for _, chain := range respBody.GetChains() {
+			chainsgrpc = append(chainsgrpc, chain.ToGRPCMessage().(*apeGRPC.Chain))
+		}
+
+		respBodygrpc.SetChains(chainsgrpc)
+	}
+
+	return respBodygrpc
+}
+
+func (respBody *ListChainsResponseBody) FromGRPCMessage(m grpc.Message) error {
+	respBodygrpc, ok := m.(*apemanager.ListChainsResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respBodygrpc)
+	}
+
+	chains := make([]*ape.Chain, 0, len(respBodygrpc.GetChains()))
+
+	for _, chaingrpc := range respBodygrpc.GetChains() {
+		chain := new(ape.Chain)
+		if err := chain.FromGRPCMessage(chaingrpc); err != nil {
+			return err
+		}
+		chains = append(chains, chain)
+	}
+
+	respBody.SetChains(chains)
+
+	return nil
+}
+
+func (resp *ListChainsResponse) ToGRPCMessage() grpc.Message {
+	var respgrpc *apemanager.ListChainsResponse
+
+	if resp != nil {
+		respgrpc = new(apemanager.ListChainsResponse)
+
+		respgrpc.SetBody(resp.body.ToGRPCMessage().(*apemanager.ListChainsResponse_Body))
+		resp.ResponseHeaders.ToMessage(respgrpc)
+	}
+
+	return respgrpc
+}
+
+func (resp *ListChainsResponse) FromGRPCMessage(m grpc.Message) error {
+	respgrpc, ok := m.(*apemanager.ListChainsResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, respgrpc)
+	}
+
+	if respBodygrpc := respgrpc.GetBody(); respBodygrpc != nil {
+		resp.body = new(ListChainsResponseBody)
+		if err := resp.body.FromGRPCMessage(respBodygrpc); err != nil {
+			return err
+		}
+	}
+
+	return resp.ResponseHeaders.FromMessage(respgrpc)
+}

api/apemanager/marshal.go

@@ -0,0 +1,205 @@
+package apemanager
+
+import (
+	apemanager "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/apemanager/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	addChainReqBodyTargetField = 1
+	addChainReqBodyChainField  = 2
+
+	addChainRespBodyChainIDField = 1
+
+	removeChainReqBodyTargetField = 1
+	removeChainReqBodyChainField  = 2
+
+	/*
+		Fields for RemoveResponseBody are missed since RemoveResponseBody is empty.
+	*/
+
+	listChainsReqBodyTargetField = 1
+
+	listChainsRespBodyChainsField = 1
+)
+
+func (rb *AddChainRequestBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	size += proto.NestedStructureSize(addChainReqBodyTargetField, rb.target)
+	size += proto.NestedStructureSize(addChainReqBodyChainField, rb.chain)
+
+	return size
+}
+
+func (rb *AddChainRequestBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	var offset int
+
+	offset += proto.NestedStructureMarshal(addChainReqBodyTargetField, buf[offset:], rb.target)
+	proto.NestedStructureMarshal(addChainReqBodyChainField, buf[offset:], rb.chain)
+
+	return buf
+}
+
+func (rb *AddChainRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.AddChainRequest_Body))
+}
+
+func (rb *AddChainResponseBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	size += proto.BytesSize(addChainRespBodyChainIDField, rb.chainID)
+
+	return size
+}
+
+func (rb *AddChainResponseBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	var offset int
+
+	proto.BytesMarshal(addChainRespBodyChainIDField, buf[offset:], rb.chainID)
+
+	return buf
+}
+
+func (rb *AddChainResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.AddChainResponse_Body))
+}
+
+func (rb *RemoveChainRequestBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	size += proto.NestedStructureSize(addChainReqBodyTargetField, rb.target)
+	size += proto.BytesSize(addChainReqBodyChainField, rb.chainID)
+
+	return size
+}
+
+func (rb *RemoveChainRequestBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	var offset int
+
+	offset += proto.NestedStructureMarshal(removeChainReqBodyTargetField, buf[offset:], rb.target)
+	proto.BytesMarshal(removeChainReqBodyChainField, buf[offset:], rb.chainID)
+
+	return buf
+}
+
+func (rb *RemoveChainRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.RemoveChainRequest_Body))
+}
+
+func (rb *RemoveChainResponseBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	return size
+}
+
+func (rb *RemoveChainResponseBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	return buf
+}
+
+func (rb *RemoveChainResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.RemoveChainResponse_Body))
+}
+
+func (rb *ListChainsRequestBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	size += proto.NestedStructureSize(listChainsReqBodyTargetField, rb.target)
+
+	return size
+}
+
+func (rb *ListChainsRequestBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	var offset int
+	proto.NestedStructureMarshal(addChainReqBodyTargetField, buf[offset:], rb.target)
+
+	return buf
+}
+
+func (rb *ListChainsRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.ListChainsRequest_Body))
+}
+
+func (rb *ListChainsResponseBody) StableSize() (size int) {
+	if rb == nil {
+		return 0
+	}
+
+	for _, chain := range rb.GetChains() {
+		size += proto.NestedStructureSize(listChainsRespBodyChainsField, chain)
+	}
+
+	return size
+}
+
+func (rb *ListChainsResponseBody) StableMarshal(buf []byte) []byte {
+	if rb == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, rb.StableSize())
+	}
+
+	var offset int
+	for _, chain := range rb.GetChains() {
+		offset += proto.NestedStructureMarshal(listChainsRespBodyChainsField, buf[offset:], chain)
+	}
+
+	return buf
+}
+
+func (rb *ListChainsResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(rb, data, new(apemanager.ListChainsResponse_Body))
+}

api/apemanager/message_test.go

@@ -0,0 +1,26 @@
+package apemanager_test
+
+import (
+	"testing"
+
+	apemanagertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/apemanager/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessageConvert(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return apemanagertest.GenerateAddChainRequestBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateAddChainRequest(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateAddChainResponseBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateAddChainResponse(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateRemoveChainRequestBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateRemoveChainRequest(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateRemoveChainResponseBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateRemoveChainResponse(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateListChainsRequestBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateListChainsRequest(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateListChainsResponseBody(empty) },
+		func(empty bool) message.Message { return apemanagertest.GenerateListChainsResponse(empty) },
+	)
+}

api/apemanager/status.go

@@ -0,0 +1,76 @@
+package apemanager
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status"
+	statusgrpc "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status/grpc"
+)
+
+// LocalizeFailStatus checks if passed global status.Code is related to ape manager failure and:
+//
+//	then localizes the code and returns true,
+//	else leaves the code unchanged and returns false.
+//
+// Arg must be non-nil.
+func LocalizeFailStatus(c *status.Code) bool {
+	return status.LocalizeIfInSection(c, uint32(statusgrpc.Section_SECTION_APE_MANAGER))
+}
+
+// GlobalizeFail globalizes local code of ape manager failure.
+//
+// Arg must be non-nil.
+func GlobalizeFail(c *status.Code) {
+	c.GlobalizeSection(uint32(statusgrpc.Section_SECTION_APE_MANAGER))
+}
+
+const (
+	// StatusAPEManagerAccessDenied is a local status.Code value for
+	// ACCESS_DENIED ape manager failure.
+	StatusAPEManagerAccessDenied status.Code = iota
+)
+
+const (
+	// detailAccessDeniedDesc is a StatusAccessDenied detail ID for
+	// human-readable description.
+	detailAccessDeniedDesc = iota
+)
+
+// WriteAccessDeniedDesc writes human-readable description of StatusAccessDenied
+// into status.Status as a detail. The status must not be nil.
+//
+// Existing details are expected to be ID-unique, otherwise undefined behavior.
+func WriteAccessDeniedDesc(st *status.Status, desc string) {
+	var found bool
+
+	st.IterateDetails(func(d *status.Detail) bool {
+		if d.ID() == detailAccessDeniedDesc {
+			found = true
+			d.SetValue([]byte(desc))
+		}
+
+		return found
+	})
+
+	if !found {
+		var d status.Detail
+
+		d.SetID(detailAccessDeniedDesc)
+		d.SetValue([]byte(desc))
+
+		st.AppendDetails(d)
+	}
+}
+
+// ReadAccessDeniedDesc looks up for status detail with human-readable description
+// of StatusAccessDenied. Returns empty string if detail is missing.
+func ReadAccessDeniedDesc(st status.Status) (desc string) {
+	st.IterateDetails(func(d *status.Detail) bool {
+		if d.ID() == detailAccessDeniedDesc {
+			desc = string(d.Value())
+			return true
+		}
+
+		return false
+	})
+
+	return
+}

api/apemanager/status_test.go

@@ -0,0 +1,30 @@
+package apemanager_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/apemanager"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status"
+	statustest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestStatusCodes(t *testing.T) {
+	statustest.TestCodes(t, apemanager.LocalizeFailStatus, apemanager.GlobalizeFail,
+		apemanager.StatusAPEManagerAccessDenied, 5120,
+	)
+}
+
+func TestAccessDeniedDesc(t *testing.T) {
+	var st status.Status
+
+	require.Empty(t, apemanager.ReadAccessDeniedDesc(st))
+
+	const desc = "some description"
+
+	apemanager.WriteAccessDeniedDesc(&st, desc)
+	require.Equal(t, desc, apemanager.ReadAccessDeniedDesc(st))
+
+	apemanager.WriteAccessDeniedDesc(&st, desc+"1")
+	require.Equal(t, desc+"1", apemanager.ReadAccessDeniedDesc(st))
+}

api/apemanager/test/generate.go

@@ -0,0 +1,143 @@
+package apemanagertest
+
+import (
+	apetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/apemanager"
+	sessiontest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/test"
+)
+
+func generateChainID(empty bool) []byte {
+	if empty {
+		return []byte{}
+	}
+
+	return []byte("616c6c6f774f626a476574436e72")
+}
+
+func GenerateAddChainRequestBody(empty bool) *apemanager.AddChainRequestBody {
+	m := new(apemanager.AddChainRequestBody)
+
+	if !empty {
+		m.SetTarget(apetest.GenerateChainTarget(empty))
+		m.SetChain(apetest.GenerateRawChain(empty))
+	}
+
+	return m
+}
+
+func GenerateAddChainRequest(empty bool) *apemanager.AddChainRequest {
+	m := new(apemanager.AddChainRequest)
+
+	if !empty {
+		m.SetBody(GenerateAddChainRequestBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+	}
+
+	return m
+}
+
+func GenerateAddChainResponseBody(empty bool) *apemanager.AddChainResponseBody {
+	m := new(apemanager.AddChainResponseBody)
+
+	if !empty {
+		m.SetChainID(generateChainID(empty))
+	}
+
+	return m
+}
+
+func GenerateAddChainResponse(empty bool) *apemanager.AddChainResponse {
+	m := new(apemanager.AddChainResponse)
+
+	if !empty {
+		m.SetBody(GenerateAddChainResponseBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+	}
+
+	return m
+}
+
+func GenerateRemoveChainRequestBody(empty bool) *apemanager.RemoveChainRequestBody {
+	m := new(apemanager.RemoveChainRequestBody)
+
+	if !empty {
+		m.SetChainID(generateChainID(empty))
+		m.SetTarget(apetest.GenerateChainTarget(empty))
+	}
+
+	return m
+}
+
+func GenerateRemoveChainRequest(empty bool) *apemanager.RemoveChainRequest {
+	m := new(apemanager.RemoveChainRequest)
+
+	if !empty {
+		m.SetBody(GenerateRemoveChainRequestBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+	}
+
+	return m
+}
+
+func GenerateRemoveChainResponseBody(_ bool) *apemanager.RemoveChainResponseBody {
+	return new(apemanager.RemoveChainResponseBody)
+}
+
+func GenerateRemoveChainResponse(empty bool) *apemanager.RemoveChainResponse {
+	m := new(apemanager.RemoveChainResponse)
+
+	if !empty {
+		m.SetBody(GenerateRemoveChainResponseBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+	}
+
+	return m
+}
+
+func GenerateListChainsRequestBody(empty bool) *apemanager.ListChainsRequestBody {
+	m := new(apemanager.ListChainsRequestBody)
+
+	if !empty {
+		m.SetTarget(apetest.GenerateChainTarget(empty))
+	}
+
+	return m
+}
+
+func GenerateListChainsRequest(empty bool) *apemanager.ListChainsRequest {
+	m := new(apemanager.ListChainsRequest)
+
+	if !empty {
+		m.SetBody(GenerateListChainsRequestBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+	}
+
+	return m
+}
+
+func GenerateListChainsResponseBody(empty bool) *apemanager.ListChainsResponseBody {
+	m := new(apemanager.ListChainsResponseBody)
+
+	if !empty {
+		m.SetChains(apetest.GenerateRawChains(empty, 10))
+	}
+
+	return m
+}
+
+func GenerateListChainsResponse(empty bool) *apemanager.ListChainsResponse {
+	m := new(apemanager.ListChainsResponse)
+
+	if !empty {
+		m.SetBody(GenerateListChainsResponseBody(empty))
+		m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+		m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+	}
+
+	return m
+}

api/apemanager/types.go

@@ -0,0 +1,226 @@
+package apemanager
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/ape"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+)
+
+type AddChainRequest struct {
+	body *AddChainRequestBody
+
+	session.RequestHeaders
+}
+
+func (r *AddChainRequest) SetBody(body *AddChainRequestBody) {
+	r.body = body
+}
+
+func (r *AddChainRequest) GetBody() *AddChainRequestBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type AddChainRequestBody struct {
+	target *ape.ChainTarget
+
+	chain *ape.Chain
+}
+
+func (rb *AddChainRequestBody) SetTarget(target *ape.ChainTarget) {
+	rb.target = target
+}
+
+func (rb *AddChainRequestBody) GetTarget() *ape.ChainTarget {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.target
+}
+
+func (rb *AddChainRequestBody) SetChain(chain *ape.Chain) {
+	rb.chain = chain
+}
+
+func (rb *AddChainRequestBody) GetChain() *ape.Chain {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.chain
+}
+
+type AddChainResponse struct {
+	body *AddChainResponseBody
+
+	session.ResponseHeaders
+}
+
+func (r *AddChainResponse) SetBody(body *AddChainResponseBody) {
+	r.body = body
+}
+
+func (r *AddChainResponse) GetBody() *AddChainResponseBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type AddChainResponseBody struct {
+	chainID []byte
+}
+
+func (rb *AddChainResponseBody) SetChainID(chainID []byte) {
+	rb.chainID = chainID
+}
+
+func (rb *AddChainResponseBody) GetChainID() []byte {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.chainID
+}
+
+type RemoveChainRequest struct {
+	body *RemoveChainRequestBody
+
+	session.RequestHeaders
+}
+
+func (r *RemoveChainRequest) SetBody(body *RemoveChainRequestBody) {
+	r.body = body
+}
+
+func (r *RemoveChainRequest) GetBody() *RemoveChainRequestBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type RemoveChainRequestBody struct {
+	target *ape.ChainTarget
+
+	chainID []byte
+}
+
+func (rb *RemoveChainRequestBody) SetTarget(target *ape.ChainTarget) {
+	rb.target = target
+}
+
+func (rb *RemoveChainRequestBody) GetTarget() *ape.ChainTarget {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.target
+}
+
+func (rb *RemoveChainRequestBody) SetChainID(chainID []byte) {
+	rb.chainID = chainID
+}
+
+func (rb *RemoveChainRequestBody) GetChainID() []byte {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.chainID
+}
+
+type RemoveChainResponse struct {
+	body *RemoveChainResponseBody
+
+	session.ResponseHeaders
+}
+
+type RemoveChainResponseBody struct{}
+
+func (r *RemoveChainResponse) SetBody(body *RemoveChainResponseBody) {
+	r.body = body
+}
+
+func (r *RemoveChainResponse) GetBody() *RemoveChainResponseBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type ListChainsRequest struct {
+	body *ListChainsRequestBody
+
+	session.RequestHeaders
+}
+
+func (r *ListChainsRequest) SetBody(body *ListChainsRequestBody) {
+	r.body = body
+}
+
+func (r *ListChainsRequest) GetBody() *ListChainsRequestBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type ListChainsRequestBody struct {
+	target *ape.ChainTarget
+}
+
+func (rb *ListChainsRequestBody) SetTarget(target *ape.ChainTarget) {
+	rb.target = target
+}
+
+func (rb *ListChainsRequestBody) GetTarget() *ape.ChainTarget {
+	if rb == nil {
+		return nil
+	}
+
+	return rb.target
+}
+
+type ListChainsResponse struct {
+	body *ListChainsResponseBody
+
+	session.ResponseHeaders
+}
+
+func (r *ListChainsResponse) SetBody(body *ListChainsResponseBody) {
+	r.body = body
+}
+
+func (r *ListChainsResponse) GetBody() *ListChainsResponseBody {
+	if r == nil {
+		return nil
+	}
+
+	return r.body
+}
+
+type ListChainsResponseBody struct {
+	chains []*ape.Chain
+
+	session.RequestHeaders
+}
+
+func (r *ListChainsResponseBody) SetChains(chains []*ape.Chain) {
+	r.chains = chains
+}
+
+func (r *ListChainsResponseBody) GetChains() []*ape.Chain {
+	if r == nil {
+		return nil
+	}
+
+	return r.chains
+}

api/container/attributes.go

@@ -0,0 +1,90 @@
+package container
+
+// SysAttributePrefix is a prefix of key to system attribute.
+const SysAttributePrefix = "__SYSTEM__"
+
+const (
+	// SysAttributeName is a string of human-friendly container name registered as the domain in NNS contract.
+	SysAttributeName = SysAttributePrefix + "NAME"
+
+	// SysAttributeZone is a string of zone for container name.
+	SysAttributeZone = SysAttributePrefix + "ZONE"
+
+	// SysAttributeHomomorphicHashing is a container's homomorphic hashing state.
+	SysAttributeHomomorphicHashing = SysAttributePrefix + "DISABLE_HOMOMORPHIC_HASHING"
+)
+
+// SysAttributePrefixNeoFS is a prefix of key to system attribute.
+// Deprecated: use SysAttributePrefix.
+const SysAttributePrefixNeoFS = "__NEOFS__"
+
+const (
+	// SysAttributeNameNeoFS is a string of human-friendly container name registered as the domain in NNS contract.
+	// Deprecated: use SysAttributeName.
+	SysAttributeNameNeoFS = SysAttributePrefixNeoFS + "NAME"
+
+	// SysAttributeZoneNeoFS is a string of zone for container name.
+	// Deprecated: use SysAttributeZone.
+	SysAttributeZoneNeoFS = SysAttributePrefixNeoFS + "ZONE"
+
+	// SysAttributeHomomorphicHashingNeoFS is a container's homomorphic hashing state.
+	// Deprecated: use SysAttributeHomomorphicHashing.
+	SysAttributeHomomorphicHashingNeoFS = SysAttributePrefixNeoFS + "DISABLE_HOMOMORPHIC_HASHING"
+)
+
+// SysAttributeZoneDefault is a default value for SysAttributeZone attribute.
+const SysAttributeZoneDefault = "container"
+
+const disabledHomomorphicHashingValue = "true"
+
+// HomomorphicHashingState returns container's homomorphic
+// hashing state:
+//   - true if hashing is enabled;
+//   - false if hashing is disabled.
+//
+// All container's attributes must be unique, otherwise behavior
+// is undefined.
+//
+// See also SetHomomorphicHashingState.
+func (c Container) HomomorphicHashingState() bool {
+	for i := range c.attr {
+		if c.attr[i].GetKey() == SysAttributeHomomorphicHashing || c.attr[i].GetKey() == SysAttributeHomomorphicHashingNeoFS {
+			return c.attr[i].GetValue() != disabledHomomorphicHashingValue
+		}
+	}
+
+	return true
+}
+
+// SetHomomorphicHashingState sets homomorphic hashing state for
+// container.
+//
+// All container's attributes must be unique, otherwise behavior
+// is undefined.
+//
+// See also HomomorphicHashingState.
+func (c *Container) SetHomomorphicHashingState(enable bool) {
+	for i := range c.attr {
+		if c.attr[i].GetKey() == SysAttributeHomomorphicHashing || c.attr[i].GetKey() == SysAttributeHomomorphicHashingNeoFS {
+			if enable {
+				// approach without allocation/waste
+				// coping works since the attributes
+				// order is not important
+				c.attr[i] = c.attr[len(c.attr)-1]
+				c.attr = c.attr[:len(c.attr)-1]
+			} else {
+				c.attr[i].SetValue(disabledHomomorphicHashingValue)
+			}
+
+			return
+		}
+	}
+
+	if !enable {
+		attr := Attribute{}
+		attr.SetKey(SysAttributeHomomorphicHashing)
+		attr.SetValue(disabledHomomorphicHashingValue)
+
+		c.attr = append(c.attr, attr)
+	}
+}

api/container/attributes_test.go

@@ -0,0 +1,59 @@
+package container_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
+	containertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestContainer_HomomorphicHashingDisabled(t *testing.T) {
+	cnr := containertest.GenerateContainer(false)
+
+	t.Run("defaults", func(t *testing.T) {
+		require.True(t, cnr.HomomorphicHashingState())
+	})
+
+	t.Run("disabled", func(t *testing.T) {
+		attr := container.Attribute{}
+		attr.SetKey(container.SysAttributeHomomorphicHashing)
+		attr.SetValue("NOT_true")
+
+		cnr.SetAttributes(append(cnr.GetAttributes(), attr))
+		require.True(t, cnr.HomomorphicHashingState())
+
+		attr.SetValue("true")
+
+		cnr.SetAttributes([]container.Attribute{attr})
+		require.False(t, cnr.HomomorphicHashingState())
+	})
+}
+
+func TestContainer_SetHomomorphicHashingState(t *testing.T) {
+	cnr := containertest.GenerateContainer(false)
+	attrs := cnr.GetAttributes()
+	attrLen := len(attrs)
+
+	cnr.SetHomomorphicHashingState(true)
+
+	// enabling hashing should not add any new attributes
+	require.Equal(t, attrLen, len(cnr.GetAttributes()))
+	require.True(t, cnr.HomomorphicHashingState())
+
+	cnr.SetHomomorphicHashingState(false)
+
+	// disabling hashing should add exactly one attribute
+	require.Equal(t, attrLen+1, len(cnr.GetAttributes()))
+	require.False(t, cnr.HomomorphicHashingState())
+
+	cnr.SetHomomorphicHashingState(true)
+
+	// enabling hashing should remove 1 attribute if
+	// hashing was disabled before
+	require.Equal(t, attrLen, len(cnr.GetAttributes()))
+	require.True(t, cnr.HomomorphicHashingState())
+
+	// hashing operations should not change any other attributes
+	require.ElementsMatch(t, attrs, cnr.GetAttributes())
+}

api/container/convert.go

@@ -0,0 +1,899 @@
+package container
+
+import (
+	container "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap"
+	netmapGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	refsGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+	sessionGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/grpc"
+)
+
+func (a *Attribute) ToGRPCMessage() grpc.Message {
+	var m *container.Container_Attribute
+
+	if a != nil {
+		m = new(container.Container_Attribute)
+
+		m.SetKey(a.key)
+		m.SetValue(a.val)
+	}
+
+	return m
+}
+
+func (a *Attribute) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.Container_Attribute)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	a.key = v.GetKey()
+	a.val = v.GetValue()
+
+	return nil
+}
+
+func AttributesToGRPC(xs []Attribute) (res []*container.Container_Attribute) {
+	if xs != nil {
+		res = make([]*container.Container_Attribute, 0, len(xs))
+
+		for i := range xs {
+			res = append(res, xs[i].ToGRPCMessage().(*container.Container_Attribute))
+		}
+	}
+
+	return
+}
+
+func AttributesFromGRPC(xs []*container.Container_Attribute) (res []Attribute, err error) {
+	if xs != nil {
+		res = make([]Attribute, len(xs))
+
+		for i := range xs {
+			err = res[i].FromGRPCMessage(xs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (c *Container) ToGRPCMessage() grpc.Message {
+	var m *container.Container
+
+	if c != nil {
+		m = new(container.Container)
+
+		m.SetVersion(c.version.ToGRPCMessage().(*refsGRPC.Version))
+		m.SetOwnerId(c.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
+		m.SetPlacementPolicy(c.policy.ToGRPCMessage().(*netmapGRPC.PlacementPolicy))
+		m.SetAttributes(AttributesToGRPC(c.attr))
+		m.SetBasicAcl(c.basicACL)
+		m.SetNonce(c.nonce)
+	}
+
+	return m
+}
+
+func (c *Container) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.Container)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	version := v.GetVersion()
+	if version == nil {
+		c.version = nil
+	} else {
+		if c.version == nil {
+			c.version = new(refs.Version)
+		}
+
+		err = c.version.FromGRPCMessage(version)
+		if err != nil {
+			return err
+		}
+	}
+
+	ownerID := v.GetOwnerId()
+	if ownerID == nil {
+		c.ownerID = nil
+	} else {
+		if c.ownerID == nil {
+			c.ownerID = new(refs.OwnerID)
+		}
+
+		err = c.ownerID.FromGRPCMessage(ownerID)
+		if err != nil {
+			return err
+		}
+	}
+
+	policy := v.GetPlacementPolicy()
+	if policy == nil {
+		c.policy = nil
+	} else {
+		if c.policy == nil {
+			c.policy = new(netmap.PlacementPolicy)
+		}
+
+		err = c.policy.FromGRPCMessage(policy)
+		if err != nil {
+			return err
+		}
+	}
+
+	c.attr, err = AttributesFromGRPC(v.GetAttributes())
+	if err != nil {
+		return err
+	}
+
+	c.basicACL = v.GetBasicAcl()
+	c.nonce = v.GetNonce()
+
+	return nil
+}
+
+func toSignatureRFC6979(s *refs.Signature) *refsGRPC.SignatureRFC6979 {
+	var res *refsGRPC.SignatureRFC6979
+
+	if s != nil {
+		res = new(refsGRPC.SignatureRFC6979)
+		res.SetKey(s.GetKey())
+		res.SetSign(s.GetSign())
+	}
+
+	return res
+}
+
+func (r *PutRequestBody) ToGRPCMessage() grpc.Message {
+	var m *container.PutRequest_Body
+
+	if r != nil {
+		m = new(container.PutRequest_Body)
+
+		m.SetContainer(r.cnr.ToGRPCMessage().(*container.Container))
+		m.SetSignature(toSignatureRFC6979(r.sig))
+	}
+
+	return m
+}
+
+func (r *PutRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.PutRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cnr := v.GetContainer()
+	if cnr == nil {
+		r.cnr = nil
+	} else {
+		if r.cnr == nil {
+			r.cnr = new(Container)
+		}
+
+		err = r.cnr.FromGRPCMessage(cnr)
+		if err != nil {
+			return err
+		}
+	}
+
+	sig := v.GetSignature()
+	if sig == nil {
+		r.sig = nil
+	} else {
+		if r.sig == nil {
+			r.sig = new(refs.Signature)
+		}
+
+		r.sig.SetKey(sig.GetKey())
+		r.sig.SetSign(sig.GetSign())
+	}
+
+	return err
+}
+
+func (r *PutRequest) ToGRPCMessage() grpc.Message {
+	var m *container.PutRequest
+
+	if r != nil {
+		m = new(container.PutRequest)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.PutRequest_Body))
+		r.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *PutRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.PutRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(PutRequestBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.RequestHeaders.FromMessage(v)
+}
+
+func (r *PutResponseBody) ToGRPCMessage() grpc.Message {
+	var m *container.PutResponse_Body
+
+	if r != nil {
+		m = new(container.PutResponse_Body)
+
+		m.SetContainerId(r.cid.ToGRPCMessage().(*refsGRPC.ContainerID))
+	}
+
+	return m
+}
+
+func (r *PutResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.PutResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cid := v.GetContainerId()
+	if cid == nil {
+		r.cid = nil
+	} else {
+		if r.cid == nil {
+			r.cid = new(refs.ContainerID)
+		}
+
+		err = r.cid.FromGRPCMessage(cid)
+	}
+
+	return err
+}
+
+func (r *PutResponse) ToGRPCMessage() grpc.Message {
+	var m *container.PutResponse
+
+	if r != nil {
+		m = new(container.PutResponse)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.PutResponse_Body))
+		r.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *PutResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.PutResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(PutResponseBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.ResponseHeaders.FromMessage(v)
+}
+
+func (r *GetRequestBody) ToGRPCMessage() grpc.Message {
+	var m *container.GetRequest_Body
+
+	if r != nil {
+		m = new(container.GetRequest_Body)
+
+		m.SetContainerId(r.cid.ToGRPCMessage().(*refsGRPC.ContainerID))
+	}
+
+	return m
+}
+
+func (r *GetRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.GetRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cid := v.GetContainerId()
+	if cid == nil {
+		r.cid = nil
+	} else {
+		if r.cid == nil {
+			r.cid = new(refs.ContainerID)
+		}
+
+		err = r.cid.FromGRPCMessage(cid)
+	}
+
+	return err
+}
+
+func (r *GetRequest) ToGRPCMessage() grpc.Message {
+	var m *container.GetRequest
+
+	if r != nil {
+		m = new(container.GetRequest)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.GetRequest_Body))
+		r.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *GetRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.GetRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(GetRequestBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.RequestHeaders.FromMessage(v)
+}
+
+func (r *GetResponseBody) ToGRPCMessage() grpc.Message {
+	var m *container.GetResponse_Body
+
+	if r != nil {
+		m = new(container.GetResponse_Body)
+
+		m.SetContainer(r.cnr.ToGRPCMessage().(*container.Container))
+		m.SetSessionToken(r.token.ToGRPCMessage().(*sessionGRPC.SessionToken))
+		m.SetSignature(toSignatureRFC6979(r.sig))
+	}
+
+	return m
+}
+
+func (r *GetResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.GetResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cnr := v.GetContainer()
+	if cnr == nil {
+		r.cnr = nil
+	} else {
+		if r.cnr == nil {
+			r.cnr = new(Container)
+		}
+
+		err = r.cnr.FromGRPCMessage(cnr)
+	}
+
+	sig := v.GetSignature()
+	if sig == nil {
+		r.sig = nil
+	} else {
+		if r.sig == nil {
+			r.sig = new(refs.Signature)
+		}
+
+		r.sig.SetKey(sig.GetKey())
+		r.sig.SetSign(sig.GetSign())
+	}
+
+	token := v.GetSessionToken()
+	if token == nil {
+		r.token = nil
+	} else {
+		if r.token == nil {
+			r.token = new(session.Token)
+		}
+
+		err = r.token.FromGRPCMessage(token)
+	}
+
+	return err
+}
+
+func (r *GetResponse) ToGRPCMessage() grpc.Message {
+	var m *container.GetResponse
+
+	if r != nil {
+		m = new(container.GetResponse)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.GetResponse_Body))
+		r.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *GetResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.GetResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(GetResponseBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.ResponseHeaders.FromMessage(v)
+}
+
+func (r *DeleteRequestBody) ToGRPCMessage() grpc.Message {
+	var m *container.DeleteRequest_Body
+
+	if r != nil {
+		m = new(container.DeleteRequest_Body)
+
+		m.SetContainerId(r.cid.ToGRPCMessage().(*refsGRPC.ContainerID))
+		m.SetSignature(toSignatureRFC6979(r.sig))
+	}
+
+	return m
+}
+
+func (r *DeleteRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.DeleteRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	cid := v.GetContainerId()
+	if cid == nil {
+		r.cid = nil
+	} else {
+		if r.cid == nil {
+			r.cid = new(refs.ContainerID)
+		}
+
+		err = r.cid.FromGRPCMessage(cid)
+		if err != nil {
+			return err
+		}
+	}
+
+	sig := v.GetSignature()
+	if sig == nil {
+		r.sig = nil
+	} else {
+		if r.sig == nil {
+			r.sig = new(refs.Signature)
+		}
+
+		r.sig.SetKey(sig.GetKey())
+		r.sig.SetSign(sig.GetSign())
+	}
+
+	return err
+}
+
+func (r *DeleteRequest) ToGRPCMessage() grpc.Message {
+	var m *container.DeleteRequest
+
+	if r != nil {
+		m = new(container.DeleteRequest)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.DeleteRequest_Body))
+		r.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *DeleteRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.DeleteRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(DeleteRequestBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.RequestHeaders.FromMessage(v)
+}
+
+func (r *DeleteResponseBody) ToGRPCMessage() grpc.Message {
+	var m *container.DeleteResponse_Body
+
+	if r != nil {
+		m = new(container.DeleteResponse_Body)
+	}
+
+	return m
+}
+
+func (r *DeleteResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.DeleteResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	return nil
+}
+
+func (r *DeleteResponse) ToGRPCMessage() grpc.Message {
+	var m *container.DeleteResponse
+
+	if r != nil {
+		m = new(container.DeleteResponse)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.DeleteResponse_Body))
+		r.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *DeleteResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.DeleteResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(DeleteResponseBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.ResponseHeaders.FromMessage(v)
+}
+
+func (r *ListRequestBody) ToGRPCMessage() grpc.Message {
+	var m *container.ListRequest_Body
+
+	if r != nil {
+		m = new(container.ListRequest_Body)
+
+		m.SetOwnerId(r.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
+	}
+
+	return m
+}
+
+func (r *ListRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	ownerID := v.GetOwnerId()
+	if ownerID == nil {
+		r.ownerID = nil
+	} else {
+		if r.ownerID == nil {
+			r.ownerID = new(refs.OwnerID)
+		}
+
+		err = r.ownerID.FromGRPCMessage(ownerID)
+	}
+
+	return err
+}
+
+func (r *ListRequest) ToGRPCMessage() grpc.Message {
+	var m *container.ListRequest
+
+	if r != nil {
+		m = new(container.ListRequest)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.ListRequest_Body))
+		r.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *ListRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(ListRequestBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.RequestHeaders.FromMessage(v)
+}
+
+func (r *ListResponseBody) ToGRPCMessage() grpc.Message {
+	var m *container.ListResponse_Body
+
+	if r != nil {
+		m = new(container.ListResponse_Body)
+
+		m.SetContainerIds(refs.ContainerIDsToGRPCMessage(r.cidList))
+	}
+
+	return m
+}
+
+func (r *ListResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	r.cidList, err = refs.ContainerIDsFromGRPCMessage(v.GetContainerIds())
+
+	return err
+}
+
+func (r *ListResponse) ToGRPCMessage() grpc.Message {
+	var m *container.ListResponse
+
+	if r != nil {
+		m = new(container.ListResponse)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.ListResponse_Body))
+		r.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *ListResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(ListResponseBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.ResponseHeaders.FromMessage(v)
+}
+
+func (r *ListStreamRequestBody) ToGRPCMessage() grpc.Message {
+	var m *container.ListStreamRequest_Body
+
+	if r != nil {
+		m = new(container.ListStreamRequest_Body)
+
+		m.SetOwnerId(r.ownerID.ToGRPCMessage().(*refsGRPC.OwnerID))
+	}
+
+	return m
+}
+
+func (r *ListStreamRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListStreamRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	ownerID := v.GetOwnerId()
+	if ownerID == nil {
+		r.ownerID = nil
+	} else {
+		if r.ownerID == nil {
+			r.ownerID = new(refs.OwnerID)
+		}
+
+		err = r.ownerID.FromGRPCMessage(ownerID)
+	}
+
+	return err
+}
+
+func (r *ListStreamRequest) ToGRPCMessage() grpc.Message {
+	var m *container.ListStreamRequest
+
+	if r != nil {
+		m = new(container.ListStreamRequest)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.ListStreamRequest_Body))
+		r.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *ListStreamRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListStreamRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(ListStreamRequestBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.RequestHeaders.FromMessage(v)
+}
+
+func (r *ListStreamResponseBody) ToGRPCMessage() grpc.Message {
+	var m *container.ListStreamResponse_Body
+
+	if r != nil {
+		m = new(container.ListStreamResponse_Body)
+
+		m.SetContainerIds(refs.ContainerIDsToGRPCMessage(r.cidList))
+	}
+
+	return m
+}
+
+func (r *ListStreamResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListStreamResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	r.cidList, err = refs.ContainerIDsFromGRPCMessage(v.GetContainerIds())
+
+	return err
+}
+
+func (r *ListStreamResponse) ToGRPCMessage() grpc.Message {
+	var m *container.ListStreamResponse
+
+	if r != nil {
+		m = new(container.ListStreamResponse)
+
+		m.SetBody(r.body.ToGRPCMessage().(*container.ListStreamResponse_Body))
+		r.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (r *ListStreamResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*container.ListStreamResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		r.body = nil
+	} else {
+		if r.body == nil {
+			r.body = new(ListStreamResponseBody)
+		}
+
+		err = r.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return r.ResponseHeaders.FromMessage(v)
+}

api/container/json.go

@@ -0,0 +1,22 @@
+package container
+
+import (
+	container "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (a *Attribute) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(a)
+}
+
+func (a *Attribute) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(a, data, new(container.Container_Attribute))
+}
+
+func (c *Container) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(c)
+}
+
+func (c *Container) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(c, data, new(container.Container))
+}

api/container/marshal.go

@@ -0,0 +1,407 @@
+package container
+
+import (
+	container "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	protoutil "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	attributeKeyField   = 1
+	attributeValueField = 2
+
+	containerVersionField    = 1
+	containerOwnerField      = 2
+	containerNonceField      = 3
+	containerBasicACLField   = 4
+	containerAttributesField = 5
+	containerPlacementField  = 6
+
+	putReqBodyContainerField = 1
+	putReqBodySignatureField = 2
+
+	putRespBodyIDField = 1
+
+	deleteReqBodyIDField        = 1
+	deleteReqBodySignatureField = 2
+
+	getReqBodyIDField = 1
+
+	getRespBodyContainerField = 1
+	getRespBodySignatureField = 2
+	getRespBodyTokenField     = 3
+
+	listReqBodyOwnerField = 1
+
+	listRespBodyIDsField = 1
+)
+
+func (a *Attribute) StableMarshal(buf []byte) []byte {
+	if a == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, a.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.StringMarshal(attributeKeyField, buf[offset:], a.key)
+	protoutil.StringMarshal(attributeValueField, buf[offset:], a.val)
+
+	return buf
+}
+
+func (a *Attribute) StableSize() (size int) {
+	if a == nil {
+		return 0
+	}
+
+	size += protoutil.StringSize(attributeKeyField, a.key)
+	size += protoutil.StringSize(attributeValueField, a.val)
+
+	return size
+}
+
+func (a *Attribute) Unmarshal(data []byte) error {
+	return message.Unmarshal(a, data, new(container.Container_Attribute))
+}
+
+func (c *Container) StableMarshal(buf []byte) []byte {
+	if c == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, c.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(containerVersionField, buf[offset:], c.version)
+	offset += protoutil.NestedStructureMarshal(containerOwnerField, buf[offset:], c.ownerID)
+	offset += protoutil.BytesMarshal(containerNonceField, buf[offset:], c.nonce)
+	offset += protoutil.UInt32Marshal(containerBasicACLField, buf[offset:], c.basicACL)
+
+	for i := range c.attr {
+		offset += protoutil.NestedStructureMarshal(containerAttributesField, buf[offset:], &c.attr[i])
+	}
+
+	protoutil.NestedStructureMarshal(containerPlacementField, buf[offset:], c.policy)
+
+	return buf
+}
+
+func (c *Container) StableSize() (size int) {
+	if c == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(containerVersionField, c.version)
+	size += protoutil.NestedStructureSize(containerOwnerField, c.ownerID)
+	size += protoutil.BytesSize(containerNonceField, c.nonce)
+	size += protoutil.UInt32Size(containerBasicACLField, c.basicACL)
+
+	for i := range c.attr {
+		size += protoutil.NestedStructureSize(containerAttributesField, &c.attr[i])
+	}
+
+	size += protoutil.NestedStructureSize(containerPlacementField, c.policy)
+
+	return size
+}
+
+func (c *Container) Unmarshal(data []byte) error {
+	return message.Unmarshal(c, data, new(container.Container))
+}
+
+func (r *PutRequestBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(putReqBodyContainerField, buf[offset:], r.cnr)
+	protoutil.NestedStructureMarshal(putReqBodySignatureField, buf[offset:], r.sig)
+
+	return buf
+}
+
+func (r *PutRequestBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(putReqBodyContainerField, r.cnr)
+	size += protoutil.NestedStructureSize(putReqBodySignatureField, r.sig)
+
+	return size
+}
+
+func (r *PutRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.PutRequest_Body))
+}
+
+func (r *PutResponseBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(putRespBodyIDField, buf, r.cid)
+
+	return buf
+}
+
+func (r *PutResponseBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(putRespBodyIDField, r.cid)
+
+	return size
+}
+
+func (r *PutResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.PutResponse_Body))
+}
+
+func (r *DeleteRequestBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(deleteReqBodyIDField, buf[offset:], r.cid)
+	protoutil.NestedStructureMarshal(deleteReqBodySignatureField, buf[offset:], r.sig)
+
+	return buf
+}
+
+func (r *DeleteRequestBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(deleteReqBodyIDField, r.cid)
+	size += protoutil.NestedStructureSize(deleteReqBodySignatureField, r.sig)
+
+	return size
+}
+
+func (r *DeleteRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.DeleteRequest_Body))
+}
+
+func (r *DeleteResponseBody) StableMarshal(_ []byte) []byte {
+	return nil
+}
+
+func (r *DeleteResponseBody) StableSize() (size int) {
+	return 0
+}
+
+func (r *DeleteResponseBody) Unmarshal([]byte) error {
+	return nil
+}
+
+func (r *GetRequestBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(getReqBodyIDField, buf, r.cid)
+
+	return buf
+}
+
+func (r *GetRequestBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(getReqBodyIDField, r.cid)
+
+	return size
+}
+
+func (r *GetRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.GetRequest_Body))
+}
+
+func (r *GetResponseBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(getRespBodyContainerField, buf, r.cnr)
+	offset += protoutil.NestedStructureMarshal(getRespBodySignatureField, buf[offset:], r.sig)
+	protoutil.NestedStructureMarshal(getRespBodyTokenField, buf[offset:], r.token)
+
+	return buf
+}
+
+func (r *GetResponseBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(getRespBodyContainerField, r.cnr)
+	size += protoutil.NestedStructureSize(getRespBodySignatureField, r.sig)
+	size += protoutil.NestedStructureSize(getRespBodyTokenField, r.token)
+
+	return size
+}
+
+func (r *GetResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.GetResponse_Body))
+}
+
+func (r *ListRequestBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(listReqBodyOwnerField, buf, r.ownerID)
+
+	return buf
+}
+
+func (r *ListRequestBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(listReqBodyOwnerField, r.ownerID)
+
+	return size
+}
+
+func (r *ListRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.ListRequest_Body))
+}
+
+func (r *ListResponseBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	for i := range r.cidList {
+		offset += protoutil.NestedStructureMarshal(listRespBodyIDsField, buf[offset:], &r.cidList[i])
+	}
+
+	return buf
+}
+
+func (r *ListResponseBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	for i := range r.cidList {
+		size += protoutil.NestedStructureSize(listRespBodyIDsField, &r.cidList[i])
+	}
+
+	return size
+}
+
+func (r *ListResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.ListResponse_Body))
+}
+
+func (r *ListStreamRequestBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(listReqBodyOwnerField, buf, r.ownerID)
+
+	return buf
+}
+
+func (r *ListStreamRequestBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(listReqBodyOwnerField, r.ownerID)
+
+	return size
+}
+
+func (r *ListStreamRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.ListStreamRequest_Body))
+}
+
+func (r *ListStreamResponseBody) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	for i := range r.cidList {
+		offset += protoutil.NestedStructureMarshal(listRespBodyIDsField, buf[offset:], &r.cidList[i])
+	}
+
+	return buf
+}
+
+func (r *ListStreamResponseBody) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	for i := range r.cidList {
+		size += protoutil.NestedStructureSize(listRespBodyIDsField, &r.cidList[i])
+	}
+
+	return size
+}
+
+func (r *ListStreamResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(container.ListStreamResponse_Body))
+}

api/container/message_test.go

@@ -0,0 +1,36 @@
+package container_test
+
+import (
+	"testing"
+
+	containertest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessageConvert(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return containertest.GenerateAttribute(empty) },
+		func(empty bool) message.Message { return containertest.GenerateContainer(empty) },
+		func(empty bool) message.Message { return containertest.GeneratePutRequestBody(empty) },
+		func(empty bool) message.Message { return containertest.GeneratePutRequest(empty) },
+		func(empty bool) message.Message { return containertest.GeneratePutResponseBody(empty) },
+		func(empty bool) message.Message { return containertest.GeneratePutResponse(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetRequestBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetRequest(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetResponseBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetResponse(empty) },
+		func(empty bool) message.Message { return containertest.GenerateDeleteRequestBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateDeleteRequest(empty) },
+		func(empty bool) message.Message { return containertest.GenerateDeleteResponseBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateDeleteResponse(empty) },
+		func(empty bool) message.Message { return containertest.GenerateListRequestBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateListRequest(empty) },
+		func(empty bool) message.Message { return containertest.GenerateListResponseBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateListResponse(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetRequestBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetRequest(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetResponseBody(empty) },
+		func(empty bool) message.Message { return containertest.GenerateGetResponse(empty) },
+	)
+}

api/container/status.go

@@ -0,0 +1,33 @@
+package container
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status"
+	statusgrpc "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status/grpc"
+)
+
+// LocalizeFailStatus checks if passed global status.Code is related to container failure and:
+//
+//	then localizes the code and returns true,
+//	else leaves the code unchanged and returns false.
+//
+// Arg must not be nil.
+func LocalizeFailStatus(c *status.Code) bool {
+	return status.LocalizeIfInSection(c, uint32(statusgrpc.Section_SECTION_CONTAINER))
+}
+
+// GlobalizeFail globalizes local code of container failure.
+//
+// Arg must not be nil.
+func GlobalizeFail(c *status.Code) {
+	c.GlobalizeSection(uint32(statusgrpc.Section_SECTION_CONTAINER))
+}
+
+const (
+	// StatusNotFound is a local status.Code value for
+	// CONTAINER_NOT_FOUND container failure.
+	StatusNotFound status.Code = iota
+
+	// StatusEACLNotFound is a local status.Code value for
+	// EACL_NOT_FOUND failure.
+	StatusEACLNotFound
+)

api/container/status_test.go

@@ -0,0 +1,15 @@
+package container_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
+	statustest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/status/test"
+)
+
+func TestStatusCodes(t *testing.T) {
+	statustest.TestCodes(t, container.LocalizeFailStatus, container.GlobalizeFail,
+		container.StatusNotFound, 3072,
+		container.StatusEACLNotFound, 3073,
+	)
+}

api/container/test/generate.go

@@ -0,0 +1,240 @@
+package containertest
+
+import (
+	"crypto/rand"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
+	netmaptest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/test"
+	refstest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/test"
+	sessiontest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/test"
+)
+
+func GenerateAttribute(empty bool) *container.Attribute {
+	m := new(container.Attribute)
+
+	if !empty {
+		m.SetKey("key")
+		m.SetValue("val")
+	}
+
+	return m
+}
+
+func GenerateAttributes(empty bool) []container.Attribute {
+	var res []container.Attribute
+
+	if !empty {
+		res = append(res,
+			*GenerateAttribute(false),
+			*GenerateAttribute(false),
+		)
+	}
+
+	return res
+}
+
+func GenerateContainer(empty bool) *container.Container {
+	m := new(container.Container)
+
+	if !empty {
+		nonce := make([]byte, 16)
+		_, _ = rand.Read(nonce)
+
+		m.SetBasicACL(12)
+		m.SetNonce(nonce)
+		m.SetOwnerID(refstest.GenerateOwnerID(false))
+		m.SetAttributes(GenerateAttributes(false))
+		m.SetPlacementPolicy(netmaptest.GeneratePlacementPolicy(false))
+	}
+
+	m.SetVersion(refstest.GenerateVersion(empty))
+
+	return m
+}
+
+func GeneratePutRequestBody(empty bool) *container.PutRequestBody {
+	m := new(container.PutRequestBody)
+
+	if !empty {
+		m.SetContainer(GenerateContainer(false))
+	}
+
+	m.SetSignature(refstest.GenerateSignature(empty))
+
+	return m
+}
+
+func GeneratePutRequest(empty bool) *container.PutRequest {
+	m := new(container.PutRequest)
+
+	if !empty {
+		m.SetBody(GeneratePutRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GeneratePutResponseBody(empty bool) *container.PutResponseBody {
+	m := new(container.PutResponseBody)
+
+	if !empty {
+		m.SetContainerID(refstest.GenerateContainerID(false))
+	}
+
+	return m
+}
+
+func GeneratePutResponse(empty bool) *container.PutResponse {
+	m := new(container.PutResponse)
+
+	if !empty {
+		m.SetBody(GeneratePutResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateGetRequestBody(empty bool) *container.GetRequestBody {
+	m := new(container.GetRequestBody)
+
+	if !empty {
+		m.SetContainerID(refstest.GenerateContainerID(false))
+	}
+
+	return m
+}
+
+func GenerateGetRequest(empty bool) *container.GetRequest {
+	m := new(container.GetRequest)
+
+	if !empty {
+		m.SetBody(GenerateGetRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateGetResponseBody(empty bool) *container.GetResponseBody {
+	m := new(container.GetResponseBody)
+
+	if !empty {
+		m.SetContainer(GenerateContainer(false))
+	}
+
+	m.SetSignature(refstest.GenerateSignature(empty))
+	m.SetSessionToken(sessiontest.GenerateSessionToken(empty))
+
+	return m
+}
+
+func GenerateGetResponse(empty bool) *container.GetResponse {
+	m := new(container.GetResponse)
+
+	if !empty {
+		m.SetBody(GenerateGetResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateDeleteRequestBody(empty bool) *container.DeleteRequestBody {
+	m := new(container.DeleteRequestBody)
+
+	if !empty {
+		m.SetContainerID(refstest.GenerateContainerID(false))
+	}
+
+	m.SetSignature(refstest.GenerateSignature(empty))
+
+	return m
+}
+
+func GenerateDeleteRequest(empty bool) *container.DeleteRequest {
+	m := new(container.DeleteRequest)
+
+	if !empty {
+		m.SetBody(GenerateDeleteRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateDeleteResponseBody(_ bool) *container.DeleteResponseBody {
+	m := new(container.DeleteResponseBody)
+
+	return m
+}
+
+func GenerateDeleteResponse(empty bool) *container.DeleteResponse {
+	m := new(container.DeleteResponse)
+
+	if !empty {
+		m.SetBody(GenerateDeleteResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateListRequestBody(empty bool) *container.ListRequestBody {
+	m := new(container.ListRequestBody)
+
+	if !empty {
+		m.SetOwnerID(refstest.GenerateOwnerID(false))
+	}
+
+	return m
+}
+
+func GenerateListRequest(empty bool) *container.ListRequest {
+	m := new(container.ListRequest)
+
+	if !empty {
+		m.SetBody(GenerateListRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateListResponseBody(empty bool) *container.ListResponseBody {
+	m := new(container.ListResponseBody)
+
+	if !empty {
+		m.SetContainerIDs(refstest.GenerateContainerIDs(false))
+	}
+
+	return m
+}
+
+func GenerateListResponse(empty bool) *container.ListResponse {
+	m := new(container.ListResponse)
+
+	if !empty {
+		m.SetBody(GenerateListResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}

api/container/types.go

@@ -0,0 +1,514 @@
+package container
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+)
+
+type Attribute struct {
+	key, val string
+}
+
+type Container struct {
+	version *refs.Version
+
+	ownerID *refs.OwnerID
+
+	nonce []byte
+
+	basicACL uint32
+
+	attr []Attribute
+
+	policy *netmap.PlacementPolicy
+}
+
+type PutRequestBody struct {
+	cnr *Container
+
+	sig *refs.Signature
+}
+type PutRequest struct {
+	body *PutRequestBody
+
+	session.RequestHeaders
+}
+
+type PutResponseBody struct {
+	cid *refs.ContainerID
+}
+
+type PutResponse struct {
+	body *PutResponseBody
+
+	session.ResponseHeaders
+}
+
+type GetRequestBody struct {
+	cid *refs.ContainerID
+}
+
+type GetRequest struct {
+	body *GetRequestBody
+
+	session.RequestHeaders
+}
+
+type GetResponseBody struct {
+	cnr *Container
+
+	token *session.Token
+
+	sig *refs.Signature
+}
+
+type GetResponse struct {
+	body *GetResponseBody
+
+	session.ResponseHeaders
+}
+
+type DeleteRequestBody struct {
+	cid *refs.ContainerID
+
+	sig *refs.Signature
+}
+
+type DeleteRequest struct {
+	body *DeleteRequestBody
+
+	session.RequestHeaders
+}
+
+type DeleteResponseBody struct{}
+
+type DeleteResponse struct {
+	body *DeleteResponseBody
+
+	session.ResponseHeaders
+}
+
+type ListRequestBody struct {
+	ownerID *refs.OwnerID
+}
+
+type ListRequest struct {
+	body *ListRequestBody
+
+	session.RequestHeaders
+}
+
+type ListResponseBody struct {
+	cidList []refs.ContainerID
+}
+
+type ListResponse struct {
+	body *ListResponseBody
+
+	session.ResponseHeaders
+}
+
+type ListStreamRequestBody struct {
+	ownerID *refs.OwnerID
+}
+
+type ListStreamRequest struct {
+	body *ListStreamRequestBody
+
+	session.RequestHeaders
+}
+
+type ListStreamResponseBody struct {
+	cidList []refs.ContainerID
+}
+
+type ListStreamResponse struct {
+	body *ListStreamResponseBody
+
+	session.ResponseHeaders
+}
+
+func (a *Attribute) GetKey() string {
+	if a != nil {
+		return a.key
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetKey(v string) {
+	a.key = v
+}
+
+func (a *Attribute) GetValue() string {
+	if a != nil {
+		return a.val
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetValue(v string) {
+	a.val = v
+}
+
+func (c *Container) GetVersion() *refs.Version {
+	if c != nil {
+		return c.version
+	}
+
+	return nil
+}
+
+func (c *Container) SetVersion(v *refs.Version) {
+	c.version = v
+}
+
+func (c *Container) GetOwnerID() *refs.OwnerID {
+	if c != nil {
+		return c.ownerID
+	}
+
+	return nil
+}
+
+func (c *Container) SetOwnerID(v *refs.OwnerID) {
+	c.ownerID = v
+}
+
+func (c *Container) GetNonce() []byte {
+	if c != nil {
+		return c.nonce
+	}
+
+	return nil
+}
+
+func (c *Container) SetNonce(v []byte) {
+	c.nonce = v
+}
+
+func (c *Container) GetBasicACL() uint32 {
+	if c != nil {
+		return c.basicACL
+	}
+
+	return 0
+}
+
+func (c *Container) SetBasicACL(v uint32) {
+	c.basicACL = v
+}
+
+func (c *Container) GetAttributes() []Attribute {
+	if c != nil {
+		return c.attr
+	}
+
+	return nil
+}
+
+func (c *Container) SetAttributes(v []Attribute) {
+	c.attr = v
+}
+
+func (c *Container) GetPlacementPolicy() *netmap.PlacementPolicy {
+	if c != nil {
+		return c.policy
+	}
+
+	return nil
+}
+
+func (c *Container) SetPlacementPolicy(v *netmap.PlacementPolicy) {
+	c.policy = v
+}
+
+func (r *PutRequestBody) GetContainer() *Container {
+	if r != nil {
+		return r.cnr
+	}
+
+	return nil
+}
+
+func (r *PutRequestBody) SetContainer(v *Container) {
+	r.cnr = v
+}
+
+func (r *PutRequestBody) GetSignature() *refs.Signature {
+	if r != nil {
+		return r.sig
+	}
+
+	return nil
+}
+
+func (r *PutRequestBody) SetSignature(v *refs.Signature) {
+	// TODO: (neofs-api-go#381) avoid this hack (e.g. create refs.SignatureRFC6979 type)
+	v.SetScheme(0)
+	r.sig = v
+}
+
+func (r *PutRequest) GetBody() *PutRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *PutRequest) SetBody(v *PutRequestBody) {
+	r.body = v
+}
+
+func (r *PutResponseBody) GetContainerID() *refs.ContainerID {
+	if r != nil {
+		return r.cid
+	}
+
+	return nil
+}
+
+func (r *PutResponseBody) SetContainerID(v *refs.ContainerID) {
+	r.cid = v
+}
+
+func (r *PutResponse) GetBody() *PutResponseBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *PutResponse) SetBody(v *PutResponseBody) {
+	r.body = v
+}
+
+func (r *GetRequestBody) GetContainerID() *refs.ContainerID {
+	if r != nil {
+		return r.cid
+	}
+
+	return nil
+}
+
+func (r *GetRequestBody) SetContainerID(v *refs.ContainerID) {
+	r.cid = v
+}
+
+func (r *GetRequest) GetBody() *GetRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *GetRequest) SetBody(v *GetRequestBody) {
+	r.body = v
+}
+
+func (r *GetResponseBody) GetContainer() *Container {
+	if r != nil {
+		return r.cnr
+	}
+
+	return nil
+}
+
+func (r *GetResponseBody) SetContainer(v *Container) {
+	r.cnr = v
+}
+
+// GetSessionToken returns token of the session within which requested
+// container was created.
+func (r *GetResponseBody) GetSessionToken() *session.Token {
+	if r != nil {
+		return r.token
+	}
+
+	return nil
+}
+
+// SetSessionToken sets token of the session within which requested
+// container was created.
+func (r *GetResponseBody) SetSessionToken(v *session.Token) {
+	r.token = v
+}
+
+// GetSignature returns signature of the requested container.
+func (r *GetResponseBody) GetSignature() *refs.Signature {
+	if r != nil {
+		return r.sig
+	}
+
+	return nil
+}
+
+// SetSignature sets signature of the requested container.
+func (r *GetResponseBody) SetSignature(v *refs.Signature) {
+	// TODO: (neofs-api-go#381) avoid this hack (e.g. create refs.SignatureRFC6979 type)
+	v.SetScheme(0)
+	r.sig = v
+}
+
+func (r *GetResponse) GetBody() *GetResponseBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *GetResponse) SetBody(v *GetResponseBody) {
+	r.body = v
+}
+
+func (r *DeleteRequestBody) GetContainerID() *refs.ContainerID {
+	if r != nil {
+		return r.cid
+	}
+
+	return nil
+}
+
+func (r *DeleteRequestBody) SetContainerID(v *refs.ContainerID) {
+	r.cid = v
+}
+
+func (r *DeleteRequestBody) GetSignature() *refs.Signature {
+	if r != nil {
+		return r.sig
+	}
+
+	return nil
+}
+
+func (r *DeleteRequestBody) SetSignature(v *refs.Signature) {
+	// TODO: (neofs-api-go#381) avoid this hack (e.g. create refs.SignatureRFC6979 type)
+	v.SetScheme(0)
+	r.sig = v
+}
+
+func (r *DeleteRequest) GetBody() *DeleteRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *DeleteRequest) SetBody(v *DeleteRequestBody) {
+	r.body = v
+}
+
+func (r *DeleteResponse) GetBody() *DeleteResponseBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *DeleteResponse) SetBody(v *DeleteResponseBody) {
+	r.body = v
+}
+
+func (r *ListRequestBody) GetOwnerID() *refs.OwnerID {
+	if r != nil {
+		return r.ownerID
+	}
+
+	return nil
+}
+
+func (r *ListRequestBody) SetOwnerID(v *refs.OwnerID) {
+	r.ownerID = v
+}
+
+func (r *ListRequest) GetBody() *ListRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *ListRequest) SetBody(v *ListRequestBody) {
+	r.body = v
+}
+
+func (r *ListResponseBody) GetContainerIDs() []refs.ContainerID {
+	if r != nil {
+		return r.cidList
+	}
+
+	return nil
+}
+
+func (r *ListResponseBody) SetContainerIDs(v []refs.ContainerID) {
+	r.cidList = v
+}
+
+func (r *ListResponse) GetBody() *ListResponseBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *ListResponse) SetBody(v *ListResponseBody) {
+	r.body = v
+}
+
+func (r *ListStreamRequestBody) GetOwnerID() *refs.OwnerID {
+	if r != nil {
+		return r.ownerID
+	}
+
+	return nil
+}
+
+func (r *ListStreamRequestBody) SetOwnerID(v *refs.OwnerID) {
+	r.ownerID = v
+}
+
+func (r *ListStreamRequest) GetBody() *ListStreamRequestBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *ListStreamRequest) SetBody(v *ListStreamRequestBody) {
+	r.body = v
+}
+
+func (r *ListStreamResponseBody) GetContainerIDs() []refs.ContainerID {
+	if r != nil {
+		return r.cidList
+	}
+
+	return nil
+}
+
+func (r *ListStreamResponseBody) SetContainerIDs(v []refs.ContainerID) {
+	r.cidList = v
+}
+
+func (r *ListStreamResponse) GetBody() *ListStreamResponseBody {
+	if r != nil {
+		return r.body
+	}
+
+	return nil
+}
+
+func (r *ListStreamResponse) SetBody(v *ListStreamResponseBody) {
+	r.body = v
+}

api/netmap/convert.go

@@ -0,0 +1,916 @@
+package netmap
+
+import (
+	netmap "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	refsGRPC "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (f *Filter) ToGRPCMessage() grpc.Message {
+	var m *netmap.Filter
+
+	if f != nil {
+		m = new(netmap.Filter)
+
+		m.SetKey(f.key)
+		m.SetValue(f.value)
+		m.SetName(f.name)
+		m.SetOp(OperationToGRPCMessage(f.op))
+		m.SetFilters(FiltersToGRPC(f.filters))
+	}
+
+	return m
+}
+
+func (f *Filter) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.Filter)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	f.filters, err = FiltersFromGRPC(v.GetFilters())
+	if err != nil {
+		return err
+	}
+
+	f.key = v.GetKey()
+	f.value = v.GetValue()
+	f.name = v.GetName()
+	f.op = OperationFromGRPCMessage(v.GetOp())
+
+	return nil
+}
+
+func FiltersToGRPC(fs []Filter) (res []*netmap.Filter) {
+	if fs != nil {
+		res = make([]*netmap.Filter, 0, len(fs))
+
+		for i := range fs {
+			res = append(res, fs[i].ToGRPCMessage().(*netmap.Filter))
+		}
+	}
+
+	return
+}
+
+func FiltersFromGRPC(fs []*netmap.Filter) (res []Filter, err error) {
+	if fs != nil {
+		res = make([]Filter, len(fs))
+
+		for i := range fs {
+			err = res[i].FromGRPCMessage(fs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (s *Selector) ToGRPCMessage() grpc.Message {
+	var m *netmap.Selector
+
+	if s != nil {
+		m = new(netmap.Selector)
+
+		m.SetName(s.name)
+		m.SetAttribute(s.attribute)
+		m.SetFilter(s.filter)
+		m.SetCount(s.count)
+		m.SetClause(ClauseToGRPCMessage(s.clause))
+	}
+
+	return m
+}
+
+func (s *Selector) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.Selector)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	s.name = v.GetName()
+	s.attribute = v.GetAttribute()
+	s.filter = v.GetFilter()
+	s.count = v.GetCount()
+	s.clause = ClauseFromGRPCMessage(v.GetClause())
+
+	return nil
+}
+
+func SelectorsToGRPC(ss []Selector) (res []*netmap.Selector) {
+	if ss != nil {
+		res = make([]*netmap.Selector, 0, len(ss))
+
+		for i := range ss {
+			res = append(res, ss[i].ToGRPCMessage().(*netmap.Selector))
+		}
+	}
+
+	return
+}
+
+func SelectorsFromGRPC(ss []*netmap.Selector) (res []Selector, err error) {
+	if ss != nil {
+		res = make([]Selector, len(ss))
+
+		for i := range ss {
+			err = res[i].FromGRPCMessage(ss[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (r *Replica) ToGRPCMessage() grpc.Message {
+	var m *netmap.Replica
+
+	if r != nil {
+		m = new(netmap.Replica)
+
+		m.SetSelector(r.selector)
+		m.SetCount(r.count)
+		m.SetEcDataCount(r.ecDataCount)
+		m.SetEcParityCount(r.ecParityCount)
+	}
+
+	return m
+}
+
+func (r *Replica) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.Replica)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	r.selector = v.GetSelector()
+	r.count = v.GetCount()
+	r.ecDataCount = v.GetEcDataCount()
+	r.ecParityCount = v.GetEcParityCount()
+
+	return nil
+}
+
+func ReplicasToGRPC(rs []Replica) (res []*netmap.Replica) {
+	if rs != nil {
+		res = make([]*netmap.Replica, 0, len(rs))
+
+		for i := range rs {
+			res = append(res, rs[i].ToGRPCMessage().(*netmap.Replica))
+		}
+	}
+
+	return
+}
+
+func ReplicasFromGRPC(rs []*netmap.Replica) (res []Replica, err error) {
+	if rs != nil {
+		res = make([]Replica, len(rs))
+
+		for i := range rs {
+			err = res[i].FromGRPCMessage(rs[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (p *PlacementPolicy) ToGRPCMessage() grpc.Message {
+	var m *netmap.PlacementPolicy
+
+	if p != nil {
+		m = new(netmap.PlacementPolicy)
+
+		m.SetFilters(FiltersToGRPC(p.filters))
+		m.SetSelectors(SelectorsToGRPC(p.selectors))
+		m.SetReplicas(ReplicasToGRPC(p.replicas))
+		m.SetContainerBackupFactor(p.backupFactor)
+		m.SetUnique(p.unique)
+	}
+
+	return m
+}
+
+func (p *PlacementPolicy) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.PlacementPolicy)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	p.filters, err = FiltersFromGRPC(v.GetFilters())
+	if err != nil {
+		return err
+	}
+
+	p.selectors, err = SelectorsFromGRPC(v.GetSelectors())
+	if err != nil {
+		return err
+	}
+
+	p.replicas, err = ReplicasFromGRPC(v.GetReplicas())
+	if err != nil {
+		return err
+	}
+
+	p.backupFactor = v.GetContainerBackupFactor()
+
+	p.unique = v.GetUnique()
+
+	return nil
+}
+
+func ClauseToGRPCMessage(n Clause) netmap.Clause {
+	return netmap.Clause(n)
+}
+
+func ClauseFromGRPCMessage(n netmap.Clause) Clause {
+	return Clause(n)
+}
+
+func OperationToGRPCMessage(n Operation) netmap.Operation {
+	return netmap.Operation(n)
+}
+
+func OperationFromGRPCMessage(n netmap.Operation) Operation {
+	return Operation(n)
+}
+
+func NodeStateToGRPCMessage(n NodeState) netmap.NodeInfo_State {
+	return netmap.NodeInfo_State(n)
+}
+
+func NodeStateFromRPCMessage(n netmap.NodeInfo_State) NodeState {
+	return NodeState(n)
+}
+
+func (a *Attribute) ToGRPCMessage() grpc.Message {
+	var m *netmap.NodeInfo_Attribute
+
+	if a != nil {
+		m = new(netmap.NodeInfo_Attribute)
+
+		m.SetKey(a.key)
+		m.SetValue(a.value)
+		m.SetParents(a.parents)
+	}
+
+	return m
+}
+
+func (a *Attribute) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NodeInfo_Attribute)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	a.key = v.GetKey()
+	a.value = v.GetValue()
+	a.parents = v.GetParents()
+
+	return nil
+}
+
+func AttributesToGRPC(as []Attribute) (res []*netmap.NodeInfo_Attribute) {
+	if as != nil {
+		res = make([]*netmap.NodeInfo_Attribute, 0, len(as))
+
+		for i := range as {
+			res = append(res, as[i].ToGRPCMessage().(*netmap.NodeInfo_Attribute))
+		}
+	}
+
+	return
+}
+
+func AttributesFromGRPC(as []*netmap.NodeInfo_Attribute) (res []Attribute, err error) {
+	if as != nil {
+		res = make([]Attribute, len(as))
+
+		for i := range as {
+			err = res[i].FromGRPCMessage(as[i])
+			if err != nil {
+				return
+			}
+		}
+	}
+
+	return
+}
+
+func (ni *NodeInfo) ToGRPCMessage() grpc.Message {
+	var m *netmap.NodeInfo
+
+	if ni != nil {
+		m = new(netmap.NodeInfo)
+
+		m.SetPublicKey(ni.publicKey)
+		m.SetAddresses(ni.addresses)
+		m.SetState(NodeStateToGRPCMessage(ni.state))
+		m.SetAttributes(AttributesToGRPC(ni.attributes))
+	}
+
+	return m
+}
+
+func (ni *NodeInfo) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NodeInfo)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	ni.attributes, err = AttributesFromGRPC(v.GetAttributes())
+	if err != nil {
+		return err
+	}
+
+	ni.publicKey = v.GetPublicKey()
+	ni.addresses = v.GetAddresses()
+	ni.state = NodeStateFromRPCMessage(v.GetState())
+
+	return nil
+}
+
+func (l *LocalNodeInfoRequestBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.LocalNodeInfoRequest_Body
+
+	if l != nil {
+		m = new(netmap.LocalNodeInfoRequest_Body)
+	}
+
+	return m
+}
+
+func (l *LocalNodeInfoRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.LocalNodeInfoRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	return nil
+}
+
+func (l *LocalNodeInfoRequest) ToGRPCMessage() grpc.Message {
+	var m *netmap.LocalNodeInfoRequest
+
+	if l != nil {
+		m = new(netmap.LocalNodeInfoRequest)
+
+		m.SetBody(l.body.ToGRPCMessage().(*netmap.LocalNodeInfoRequest_Body))
+		l.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (l *LocalNodeInfoRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.LocalNodeInfoRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		l.body = nil
+	} else {
+		if l.body == nil {
+			l.body = new(LocalNodeInfoRequestBody)
+		}
+
+		err = l.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return l.RequestHeaders.FromMessage(v)
+}
+
+func (l *LocalNodeInfoResponseBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.LocalNodeInfoResponse_Body
+
+	if l != nil {
+		m = new(netmap.LocalNodeInfoResponse_Body)
+
+		m.SetVersion(l.version.ToGRPCMessage().(*refsGRPC.Version))
+		m.SetNodeInfo(l.nodeInfo.ToGRPCMessage().(*netmap.NodeInfo))
+	}
+
+	return m
+}
+
+func (l *LocalNodeInfoResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.LocalNodeInfoResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	version := v.GetVersion()
+	if version == nil {
+		l.version = nil
+	} else {
+		if l.version == nil {
+			l.version = new(refs.Version)
+		}
+
+		err = l.version.FromGRPCMessage(version)
+		if err != nil {
+			return err
+		}
+	}
+
+	nodeInfo := v.GetNodeInfo()
+	if nodeInfo == nil {
+		l.nodeInfo = nil
+	} else {
+		if l.nodeInfo == nil {
+			l.nodeInfo = new(NodeInfo)
+		}
+
+		err = l.nodeInfo.FromGRPCMessage(nodeInfo)
+	}
+
+	return err
+}
+
+func (l *LocalNodeInfoResponse) ToGRPCMessage() grpc.Message {
+	var m *netmap.LocalNodeInfoResponse
+
+	if l != nil {
+		m = new(netmap.LocalNodeInfoResponse)
+
+		m.SetBody(l.body.ToGRPCMessage().(*netmap.LocalNodeInfoResponse_Body))
+		l.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (l *LocalNodeInfoResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.LocalNodeInfoResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		l.body = nil
+	} else {
+		if l.body == nil {
+			l.body = new(LocalNodeInfoResponseBody)
+		}
+
+		err = l.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return l.ResponseHeaders.FromMessage(v)
+}
+
+func (x *NetworkParameter) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkConfig_Parameter
+
+	if x != nil {
+		m = new(netmap.NetworkConfig_Parameter)
+
+		m.SetKey(x.k)
+		m.SetValue(x.v)
+	}
+
+	return m
+}
+
+func (x *NetworkParameter) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkConfig_Parameter)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	x.k = v.GetKey()
+	x.v = v.GetValue()
+
+	return nil
+}
+
+func (x *NetworkConfig) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkConfig
+
+	if x != nil {
+		m = new(netmap.NetworkConfig)
+
+		var ps []*netmap.NetworkConfig_Parameter
+
+		if ln := len(x.ps); ln > 0 {
+			ps = make([]*netmap.NetworkConfig_Parameter, 0, ln)
+
+			for i := range ln {
+				ps = append(ps, x.ps[i].ToGRPCMessage().(*netmap.NetworkConfig_Parameter))
+			}
+		}
+
+		m.SetParameters(ps)
+	}
+
+	return m
+}
+
+func (x *NetworkConfig) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkConfig)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var (
+		ps   []NetworkParameter
+		psV2 = v.GetParameters()
+	)
+
+	if psV2 != nil {
+		ln := len(psV2)
+
+		ps = make([]NetworkParameter, ln)
+
+		for i := range ln {
+			if err := ps[i].FromGRPCMessage(psV2[i]); err != nil {
+				return err
+			}
+		}
+	}
+
+	x.ps = ps
+
+	return nil
+}
+
+func (i *NetworkInfo) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkInfo
+
+	if i != nil {
+		m = new(netmap.NetworkInfo)
+
+		m.SetMagicNumber(i.magicNum)
+		m.SetCurrentEpoch(i.curEpoch)
+		m.SetMsPerBlock(i.msPerBlock)
+		m.SetNetworkConfig(i.netCfg.ToGRPCMessage().(*netmap.NetworkConfig))
+	}
+
+	return m
+}
+
+func (i *NetworkInfo) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkInfo)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	netCfg := v.GetNetworkConfig()
+	if netCfg == nil {
+		i.netCfg = nil
+	} else {
+		if i.netCfg == nil {
+			i.netCfg = new(NetworkConfig)
+		}
+
+		err = i.netCfg.FromGRPCMessage(netCfg)
+		if err != nil {
+			return err
+		}
+	}
+
+	i.magicNum = v.GetMagicNumber()
+	i.curEpoch = v.GetCurrentEpoch()
+	i.msPerBlock = v.GetMsPerBlock()
+
+	return nil
+}
+
+func (l *NetworkInfoRequestBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkInfoRequest_Body
+
+	if l != nil {
+		m = new(netmap.NetworkInfoRequest_Body)
+	}
+
+	return m
+}
+
+func (l *NetworkInfoRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkInfoRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	return nil
+}
+
+func (l *NetworkInfoRequest) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkInfoRequest
+
+	if l != nil {
+		m = new(netmap.NetworkInfoRequest)
+
+		m.SetBody(l.body.ToGRPCMessage().(*netmap.NetworkInfoRequest_Body))
+		l.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (l *NetworkInfoRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkInfoRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		l.body = nil
+	} else {
+		if l.body == nil {
+			l.body = new(NetworkInfoRequestBody)
+		}
+
+		err = l.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return l.RequestHeaders.FromMessage(v)
+}
+
+func (i *NetworkInfoResponseBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkInfoResponse_Body
+
+	if i != nil {
+		m = new(netmap.NetworkInfoResponse_Body)
+
+		m.SetNetworkInfo(i.netInfo.ToGRPCMessage().(*netmap.NetworkInfo))
+	}
+
+	return m
+}
+
+func (i *NetworkInfoResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkInfoResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	netInfo := v.GetNetworkInfo()
+	if netInfo == nil {
+		i.netInfo = nil
+	} else {
+		if i.netInfo == nil {
+			i.netInfo = new(NetworkInfo)
+		}
+
+		err = i.netInfo.FromGRPCMessage(netInfo)
+	}
+
+	return err
+}
+
+func (l *NetworkInfoResponse) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetworkInfoResponse
+
+	if l != nil {
+		m = new(netmap.NetworkInfoResponse)
+
+		m.SetBody(l.body.ToGRPCMessage().(*netmap.NetworkInfoResponse_Body))
+		l.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (l *NetworkInfoResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetworkInfoResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		l.body = nil
+	} else {
+		if l.body == nil {
+			l.body = new(NetworkInfoResponseBody)
+		}
+
+		err = l.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return l.ResponseHeaders.FromMessage(v)
+}
+
+func (x *NetMap) ToGRPCMessage() grpc.Message {
+	var m *netmap.Netmap
+
+	if x != nil {
+		m = new(netmap.Netmap)
+
+		m.SetEpoch(x.epoch)
+
+		if x.nodes != nil {
+			nodes := make([]*netmap.NodeInfo, len(x.nodes))
+
+			for i := range x.nodes {
+				nodes[i] = x.nodes[i].ToGRPCMessage().(*netmap.NodeInfo)
+			}
+
+			m.SetNodes(nodes)
+		}
+	}
+
+	return m
+}
+
+func (x *NetMap) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.Netmap)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	nodes := v.GetNodes()
+	if nodes == nil {
+		x.nodes = nil
+	} else {
+		x.nodes = make([]NodeInfo, len(nodes))
+
+		for i := range nodes {
+			err = x.nodes[i].FromGRPCMessage(nodes[i])
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	x.epoch = v.GetEpoch()
+
+	return nil
+}
+
+func (x *SnapshotRequestBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetmapSnapshotRequest_Body
+
+	if x != nil {
+		m = new(netmap.NetmapSnapshotRequest_Body)
+	}
+
+	return m
+}
+
+func (x *SnapshotRequestBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetmapSnapshotRequest_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	return nil
+}
+
+func (x *SnapshotRequest) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetmapSnapshotRequest
+
+	if x != nil {
+		m = new(netmap.NetmapSnapshotRequest)
+
+		m.SetBody(x.body.ToGRPCMessage().(*netmap.NetmapSnapshotRequest_Body))
+		x.RequestHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (x *SnapshotRequest) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetmapSnapshotRequest)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		x.body = nil
+	} else {
+		if x.body == nil {
+			x.body = new(SnapshotRequestBody)
+		}
+
+		err = x.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return x.RequestHeaders.FromMessage(v)
+}
+
+func (x *SnapshotResponseBody) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetmapSnapshotResponse_Body
+
+	if x != nil {
+		m = new(netmap.NetmapSnapshotResponse_Body)
+
+		m.SetNetmap(x.netMap.ToGRPCMessage().(*netmap.Netmap))
+	}
+
+	return m
+}
+
+func (x *SnapshotResponseBody) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetmapSnapshotResponse_Body)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	netMap := v.GetNetmap()
+	if netMap == nil {
+		x.netMap = nil
+	} else {
+		if x.netMap == nil {
+			x.netMap = new(NetMap)
+		}
+
+		err = x.netMap.FromGRPCMessage(netMap)
+	}
+
+	return err
+}
+
+func (x *SnapshotResponse) ToGRPCMessage() grpc.Message {
+	var m *netmap.NetmapSnapshotResponse
+
+	if x != nil {
+		m = new(netmap.NetmapSnapshotResponse)
+
+		m.SetBody(x.body.ToGRPCMessage().(*netmap.NetmapSnapshotResponse_Body))
+		x.ResponseHeaders.ToMessage(m)
+	}
+
+	return m
+}
+
+func (x *SnapshotResponse) FromGRPCMessage(m grpc.Message) error {
+	v, ok := m.(*netmap.NetmapSnapshotResponse)
+	if !ok {
+		return message.NewUnexpectedMessageType(m, v)
+	}
+
+	var err error
+
+	body := v.GetBody()
+	if body == nil {
+		x.body = nil
+	} else {
+		if x.body == nil {
+			x.body = new(SnapshotResponseBody)
+		}
+
+		err = x.body.FromGRPCMessage(body)
+		if err != nil {
+			return err
+		}
+	}
+
+	return x.ResponseHeaders.FromMessage(v)
+}

api/netmap/json.go

@@ -0,0 +1,62 @@
+package netmap
+
+import (
+	netmap "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+)
+
+func (p *PlacementPolicy) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(p)
+}
+
+func (p *PlacementPolicy) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(p, data, new(netmap.PlacementPolicy))
+}
+
+func (f *Filter) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(f)
+}
+
+func (f *Filter) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(f, data, new(netmap.Filter))
+}
+
+func (s *Selector) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(s)
+}
+
+func (s *Selector) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(s, data, new(netmap.Selector))
+}
+
+func (r *Replica) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(r)
+}
+
+func (r *Replica) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(r, data, new(netmap.Replica))
+}
+
+func (a *Attribute) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(a)
+}
+
+func (a *Attribute) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(a, data, new(netmap.NodeInfo_Attribute))
+}
+
+func (ni *NodeInfo) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(ni)
+}
+
+func (ni *NodeInfo) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(ni, data, new(netmap.NodeInfo))
+}
+
+func (i *NetworkInfo) MarshalJSON() ([]byte, error) {
+	return message.MarshalJSON(i)
+}
+
+func (i *NetworkInfo) UnmarshalJSON(data []byte) error {
+	return message.UnmarshalJSON(i, data, new(netmap.NetworkInfo))
+}

api/netmap/marshal.go

@@ -0,0 +1,576 @@
+package netmap
+
+import (
+	netmap "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	protoutil "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/util/proto"
+)
+
+const (
+	nameFilterField    = 1
+	keyFilterField     = 2
+	opFilterField      = 3
+	valueFilterField   = 4
+	filtersFilterField = 5
+
+	nameSelectorField      = 1
+	countSelectorField     = 2
+	clauseSelectorField    = 3
+	attributeSelectorField = 4
+	filterSelectorField    = 5
+
+	countReplicaField         = 1
+	selectorReplicaField      = 2
+	ecDataCountReplicaField   = 3
+	ecParityCountReplicaField = 4
+
+	replicasPolicyField  = 1
+	backupPolicyField    = 2
+	selectorsPolicyField = 3
+	filtersPolicyField   = 4
+	uniquePolicyField    = 5
+
+	keyAttributeField     = 1
+	valueAttributeField   = 2
+	parentsAttributeField = 3
+
+	keyNodeInfoField        = 1
+	addressNodeInfoField    = 2
+	attributesNodeInfoField = 3
+	stateNodeInfoField      = 4
+
+	versionInfoResponseBodyField = 1
+	nodeInfoResponseBodyField    = 2
+)
+
+func (f *Filter) StableMarshal(buf []byte) []byte {
+	if f == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, f.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.StringMarshal(nameFilterField, buf[offset:], f.name)
+	offset += protoutil.StringMarshal(keyFilterField, buf[offset:], f.key)
+	offset += protoutil.EnumMarshal(opFilterField, buf[offset:], int32(f.op))
+	offset += protoutil.StringMarshal(valueFilterField, buf[offset:], f.value)
+
+	for i := range f.filters {
+		offset += protoutil.NestedStructureMarshal(filtersFilterField, buf[offset:], &f.filters[i])
+	}
+
+	return buf
+}
+
+func (f *Filter) StableSize() (size int) {
+	if f == nil {
+		return 0
+	}
+
+	size += protoutil.StringSize(nameFilterField, f.name)
+	size += protoutil.StringSize(keyFilterField, f.key)
+	size += protoutil.EnumSize(opFilterField, int32(f.op))
+	size += protoutil.StringSize(valueFilterField, f.value)
+	for i := range f.filters {
+		size += protoutil.NestedStructureSize(filtersFilterField, &f.filters[i])
+	}
+
+	return size
+}
+
+func (f *Filter) Unmarshal(data []byte) error {
+	return message.Unmarshal(f, data, new(netmap.Filter))
+}
+
+func (s *Selector) StableMarshal(buf []byte) []byte {
+	if s == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, s.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.StringMarshal(nameSelectorField, buf[offset:], s.name)
+	offset += protoutil.UInt32Marshal(countSelectorField, buf[offset:], s.count)
+	offset += protoutil.EnumMarshal(clauseSelectorField, buf[offset:], int32(s.clause))
+	offset += protoutil.StringMarshal(attributeSelectorField, buf[offset:], s.attribute)
+	protoutil.StringMarshal(filterSelectorField, buf[offset:], s.filter)
+
+	return buf
+}
+
+func (s *Selector) StableSize() (size int) {
+	if s == nil {
+		return 0
+	}
+
+	size += protoutil.StringSize(nameSelectorField, s.name)
+	size += protoutil.UInt32Size(countSelectorField, s.count)
+	size += protoutil.EnumSize(countSelectorField, int32(s.clause))
+	size += protoutil.StringSize(attributeSelectorField, s.attribute)
+	size += protoutil.StringSize(filterSelectorField, s.filter)
+
+	return size
+}
+
+func (s *Selector) Unmarshal(data []byte) error {
+	return message.Unmarshal(s, data, new(netmap.Selector))
+}
+
+func (r *Replica) StableMarshal(buf []byte) []byte {
+	if r == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, r.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.UInt32Marshal(countReplicaField, buf[offset:], r.count)
+	offset += protoutil.StringMarshal(selectorReplicaField, buf[offset:], r.selector)
+	offset += protoutil.UInt32Marshal(ecDataCountReplicaField, buf[offset:], r.ecDataCount)
+	protoutil.UInt32Marshal(ecParityCountReplicaField, buf[offset:], r.ecParityCount)
+
+	return buf
+}
+
+func (r *Replica) StableSize() (size int) {
+	if r == nil {
+		return 0
+	}
+
+	size += protoutil.UInt32Size(countReplicaField, r.count)
+	size += protoutil.StringSize(selectorReplicaField, r.selector)
+	size += protoutil.UInt32Size(ecDataCountReplicaField, r.ecDataCount)
+	size += protoutil.UInt32Size(ecParityCountReplicaField, r.ecParityCount)
+
+	return size
+}
+
+func (r *Replica) Unmarshal(data []byte) error {
+	return message.Unmarshal(r, data, new(netmap.Replica))
+}
+
+func (p *PlacementPolicy) StableMarshal(buf []byte) []byte {
+	if p == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, p.StableSize())
+	}
+
+	var offset int
+
+	for i := range p.replicas {
+		offset += protoutil.NestedStructureMarshal(replicasPolicyField, buf[offset:], &p.replicas[i])
+	}
+
+	offset += protoutil.UInt32Marshal(backupPolicyField, buf[offset:], p.backupFactor)
+
+	for i := range p.selectors {
+		offset += protoutil.NestedStructureMarshal(selectorsPolicyField, buf[offset:], &p.selectors[i])
+	}
+
+	for i := range p.filters {
+		offset += protoutil.NestedStructureMarshal(filtersPolicyField, buf[offset:], &p.filters[i])
+	}
+
+	protoutil.BoolMarshal(uniquePolicyField, buf[offset:], p.unique)
+
+	return buf
+}
+
+func (p *PlacementPolicy) StableSize() (size int) {
+	if p == nil {
+		return 0
+	}
+
+	for i := range p.replicas {
+		size += protoutil.NestedStructureSize(replicasPolicyField, &p.replicas[i])
+	}
+
+	size += protoutil.UInt32Size(backupPolicyField, p.backupFactor)
+
+	for i := range p.selectors {
+		size += protoutil.NestedStructureSize(selectorsPolicyField, &p.selectors[i])
+	}
+
+	for i := range p.filters {
+		size += protoutil.NestedStructureSize(filtersPolicyField, &p.filters[i])
+	}
+
+	size += protoutil.BoolSize(uniquePolicyField, p.unique)
+
+	return size
+}
+
+func (p *PlacementPolicy) Unmarshal(data []byte) error {
+	return message.Unmarshal(p, data, new(netmap.PlacementPolicy))
+}
+
+func (a *Attribute) StableMarshal(buf []byte) []byte {
+	if a == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, a.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.StringMarshal(keyAttributeField, buf[offset:], a.key)
+	offset += protoutil.StringMarshal(valueAttributeField, buf[offset:], a.value)
+
+	for i := range a.parents {
+		offset += protoutil.StringMarshal(parentsAttributeField, buf[offset:], a.parents[i])
+	}
+
+	return buf
+}
+
+func (a *Attribute) StableSize() (size int) {
+	if a == nil {
+		return 0
+	}
+
+	size += protoutil.StringSize(keyAttributeField, a.key)
+	size += protoutil.StringSize(valueAttributeField, a.value)
+
+	for i := range a.parents {
+		size += protoutil.StringSize(parentsAttributeField, a.parents[i])
+	}
+
+	return size
+}
+
+func (a *Attribute) Unmarshal(data []byte) error {
+	return message.Unmarshal(a, data, new(netmap.NodeInfo_Attribute))
+}
+
+func (ni *NodeInfo) StableMarshal(buf []byte) []byte {
+	if ni == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, ni.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.BytesMarshal(keyNodeInfoField, buf[offset:], ni.publicKey)
+	offset += protoutil.RepeatedStringMarshal(addressNodeInfoField, buf[offset:], ni.addresses)
+
+	for i := range ni.attributes {
+		offset += protoutil.NestedStructureMarshal(attributesNodeInfoField, buf[offset:], &ni.attributes[i])
+	}
+
+	protoutil.EnumMarshal(stateNodeInfoField, buf[offset:], int32(ni.state))
+
+	return buf
+}
+
+func (ni *NodeInfo) StableSize() (size int) {
+	if ni == nil {
+		return 0
+	}
+
+	size += protoutil.BytesSize(keyNodeInfoField, ni.publicKey)
+	size += protoutil.RepeatedStringSize(addressNodeInfoField, ni.addresses)
+
+	for i := range ni.attributes {
+		size += protoutil.NestedStructureSize(attributesNodeInfoField, &ni.attributes[i])
+	}
+
+	size += protoutil.EnumSize(stateNodeInfoField, int32(ni.state))
+
+	return size
+}
+
+func (ni *NodeInfo) Unmarshal(data []byte) error {
+	return message.Unmarshal(ni, data, new(netmap.NodeInfo))
+}
+
+func (l *LocalNodeInfoRequestBody) StableMarshal(_ []byte) []byte {
+	return nil
+}
+
+func (l *LocalNodeInfoRequestBody) StableSize() (size int) {
+	return 0
+}
+
+func (l *LocalNodeInfoRequestBody) Unmarshal([]byte) error {
+	return nil
+}
+
+func (l *LocalNodeInfoResponseBody) StableMarshal(buf []byte) []byte {
+	if l == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, l.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.NestedStructureMarshal(versionInfoResponseBodyField, buf[offset:], l.version)
+	protoutil.NestedStructureMarshal(nodeInfoResponseBodyField, buf[offset:], l.nodeInfo)
+
+	return buf
+}
+
+func (l *LocalNodeInfoResponseBody) StableSize() (size int) {
+	if l == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(versionInfoResponseBodyField, l.version)
+	size += protoutil.NestedStructureSize(nodeInfoResponseBodyField, l.nodeInfo)
+
+	return size
+}
+
+func (l *LocalNodeInfoResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(l, data, new(netmap.LocalNodeInfoResponse_Body))
+}
+
+const (
+	_ = iota
+	netPrmKeyFNum
+	netPrmValFNum
+)
+
+func (x *NetworkParameter) StableMarshal(buf []byte) []byte {
+	if x == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, x.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.BytesMarshal(netPrmKeyFNum, buf[offset:], x.k)
+	protoutil.BytesMarshal(netPrmValFNum, buf[offset:], x.v)
+
+	return buf
+}
+
+func (x *NetworkParameter) StableSize() (size int) {
+	if x == nil {
+		return 0
+	}
+
+	size += protoutil.BytesSize(netPrmKeyFNum, x.k)
+	size += protoutil.BytesSize(netPrmValFNum, x.v)
+
+	return size
+}
+
+const (
+	_ = iota
+	netCfgPrmsFNum
+)
+
+func (x *NetworkConfig) StableMarshal(buf []byte) []byte {
+	if x == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, x.StableSize())
+	}
+
+	var offset int
+
+	for i := range x.ps {
+		offset += protoutil.NestedStructureMarshal(netCfgPrmsFNum, buf[offset:], &x.ps[i])
+	}
+
+	return buf
+}
+
+func (x *NetworkConfig) StableSize() (size int) {
+	if x == nil {
+		return 0
+	}
+
+	for i := range x.ps {
+		size += protoutil.NestedStructureSize(netCfgPrmsFNum, &x.ps[i])
+	}
+
+	return size
+}
+
+const (
+	_ = iota
+	netInfoCurEpochFNum
+	netInfoMagicNumFNum
+	netInfoMSPerBlockFNum
+	netInfoCfgFNum
+)
+
+func (i *NetworkInfo) StableMarshal(buf []byte) []byte {
+	if i == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, i.StableSize())
+	}
+
+	var offset int
+
+	offset += protoutil.UInt64Marshal(netInfoCurEpochFNum, buf[offset:], i.curEpoch)
+	offset += protoutil.UInt64Marshal(netInfoMagicNumFNum, buf[offset:], i.magicNum)
+	offset += protoutil.Int64Marshal(netInfoMSPerBlockFNum, buf[offset:], i.msPerBlock)
+	protoutil.NestedStructureMarshal(netInfoCfgFNum, buf[offset:], i.netCfg)
+
+	return buf
+}
+
+func (i *NetworkInfo) StableSize() (size int) {
+	if i == nil {
+		return 0
+	}
+
+	size += protoutil.UInt64Size(netInfoCurEpochFNum, i.curEpoch)
+	size += protoutil.UInt64Size(netInfoMagicNumFNum, i.magicNum)
+	size += protoutil.Int64Size(netInfoMSPerBlockFNum, i.msPerBlock)
+	size += protoutil.NestedStructureSize(netInfoCfgFNum, i.netCfg)
+
+	return size
+}
+
+func (i *NetworkInfo) Unmarshal(data []byte) error {
+	return message.Unmarshal(i, data, new(netmap.NetworkInfo))
+}
+
+func (l *NetworkInfoRequestBody) StableMarshal(_ []byte) []byte {
+	return nil
+}
+
+func (l *NetworkInfoRequestBody) StableSize() (size int) {
+	return 0
+}
+
+func (l *NetworkInfoRequestBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(l, data, new(netmap.NetworkInfoRequest_Body))
+}
+
+const (
+	_ = iota
+	netInfoRespBodyNetInfoFNum
+)
+
+func (i *NetworkInfoResponseBody) StableMarshal(buf []byte) []byte {
+	if i == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, i.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(netInfoRespBodyNetInfoFNum, buf, i.netInfo)
+
+	return buf
+}
+
+func (i *NetworkInfoResponseBody) StableSize() (size int) {
+	if i == nil {
+		return 0
+	}
+
+	size += protoutil.NestedStructureSize(netInfoRespBodyNetInfoFNum, i.netInfo)
+
+	return size
+}
+
+func (i *NetworkInfoResponseBody) Unmarshal(data []byte) error {
+	return message.Unmarshal(i, data, new(netmap.NetworkInfoResponse_Body))
+}
+
+const (
+	_ = iota
+	fNumNetMapEpoch
+	fNumNetMapNodes
+)
+
+func (x *NetMap) StableMarshal(buf []byte) []byte {
+	if x == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, x.StableSize())
+	}
+
+	offset := protoutil.UInt64Marshal(fNumNetMapEpoch, buf, x.epoch)
+
+	for i := range x.nodes {
+		offset += protoutil.NestedStructureMarshal(fNumNetMapNodes, buf[offset:], &x.nodes[i])
+	}
+
+	return buf
+}
+
+func (x *NetMap) StableSize() (size int) {
+	if x != nil {
+		size = protoutil.UInt64Size(fNumNetMapEpoch, x.epoch)
+
+		for i := range x.nodes {
+			size += protoutil.NestedStructureSize(fNumNetMapNodes, &x.nodes[i])
+		}
+	}
+
+	return
+}
+
+func (x *SnapshotRequestBody) StableMarshal([]byte) []byte {
+	return nil
+}
+
+func (x *SnapshotRequestBody) StableSize() int {
+	return 0
+}
+
+const (
+	_ = iota
+	fNumSnapshotResponseBodyNetMap
+)
+
+func (x *SnapshotResponseBody) StableMarshal(buf []byte) []byte {
+	if x == nil {
+		return []byte{}
+	}
+
+	if buf == nil {
+		buf = make([]byte, x.StableSize())
+	}
+
+	protoutil.NestedStructureMarshal(fNumSnapshotResponseBodyNetMap, buf, x.netMap)
+
+	return buf
+}
+
+func (x *SnapshotResponseBody) StableSize() (size int) {
+	if x != nil {
+		size = protoutil.NestedStructureSize(fNumSnapshotResponseBodyNetMap, x.netMap)
+	}
+
+	return
+}

api/netmap/message_test.go

@@ -0,0 +1,32 @@
+package netmap_test
+
+import (
+	"testing"
+
+	netmaptest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message"
+	messagetest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/rpc/message/test"
+)
+
+func TestMessageConvert(t *testing.T) {
+	messagetest.TestRPCMessage(t,
+		func(empty bool) message.Message { return netmaptest.GenerateFilter(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateSelector(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateReplica(empty) },
+		func(empty bool) message.Message { return netmaptest.GeneratePlacementPolicy(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateAttribute(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNodeInfo(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateLocalNodeInfoRequest(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateLocalNodeInfoResponseBody(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetworkParameter(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetworkConfig(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetworkInfo(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetworkInfoRequest(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetworkInfoResponseBody(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateNetMap(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateSnapshotRequestBody(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateSnapshotRequest(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateSnapshotResponseBody(empty) },
+		func(empty bool) message.Message { return netmaptest.GenerateSnapshotResponse(empty) },
+	)
+}

api/netmap/string.go

@@ -0,0 +1,62 @@
+package netmap
+
+import (
+	netmap "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap/grpc"
+)
+
+// String returns string representation of Clause.
+func (x Clause) String() string {
+	return ClauseToGRPCMessage(x).String()
+}
+
+// FromString parses Clause from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *Clause) FromString(s string) bool {
+	g, ok := netmap.Clause_value[s]
+
+	if ok {
+		*x = ClauseFromGRPCMessage(netmap.Clause(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of Operation.
+func (x Operation) String() string {
+	return OperationToGRPCMessage(x).String()
+}
+
+// FromString parses Operation from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *Operation) FromString(s string) bool {
+	g, ok := netmap.Operation_value[s]
+
+	if ok {
+		*x = OperationFromGRPCMessage(netmap.Operation(g))
+	}
+
+	return ok
+}
+
+// String returns string representation of NodeState.
+func (x NodeState) String() string {
+	return NodeStateToGRPCMessage(x).String()
+}
+
+// FromString parses NodeState from a string representation.
+// It is a reverse action to String().
+//
+// Returns true if s was parsed successfully.
+func (x *NodeState) FromString(s string) bool {
+	g, ok := netmap.NodeInfo_State_value[s]
+
+	if ok {
+		*x = NodeStateFromRPCMessage(netmap.NodeInfo_State(g))
+	}
+
+	return ok
+}

api/netmap/test/generate.go

@@ -0,0 +1,335 @@
+package netmaptest
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/netmap"
+	refstest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs/test"
+	sessiontest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session/test"
+)
+
+func GenerateFilter(empty bool) *netmap.Filter {
+	return generateFilter(empty, true)
+}
+
+func generateFilter(empty, withSub bool) *netmap.Filter {
+	m := new(netmap.Filter)
+
+	if !empty {
+		m.SetKey("filter key")
+		m.SetValue("filter value")
+		m.SetName("filter name")
+		m.SetOp(1)
+
+		if withSub {
+			m.SetFilters([]netmap.Filter{
+				*generateFilter(empty, false),
+				*generateFilter(empty, false),
+			})
+		}
+	}
+
+	return m
+}
+
+func GenerateFilters(empty bool) []netmap.Filter {
+	var res []netmap.Filter
+
+	if !empty {
+		res = append(res,
+			*GenerateFilter(false),
+			*GenerateFilter(false),
+		)
+	}
+
+	return res
+}
+
+func GenerateSelector(empty bool) *netmap.Selector {
+	m := new(netmap.Selector)
+
+	if !empty {
+		m.SetCount(66)
+		m.SetAttribute("selector attribute")
+		m.SetFilter("select filter")
+		m.SetName("select name")
+		m.SetClause(1)
+	}
+
+	return m
+}
+
+func GenerateSelectors(empty bool) []netmap.Selector {
+	var res []netmap.Selector
+
+	if !empty {
+		res = append(res,
+			*GenerateSelector(false),
+			*GenerateSelector(false),
+		)
+	}
+
+	return res
+}
+
+func GenerateReplica(empty bool) *netmap.Replica {
+	m := new(netmap.Replica)
+
+	if !empty {
+		m.SetCount(42)
+		m.SetSelector("replica selector")
+	}
+
+	return m
+}
+
+func GenerateEC(empty bool) *netmap.Replica {
+	m := new(netmap.Replica)
+
+	if !empty {
+		m.SetECDataCount(4)
+		m.SetECParityCount(2)
+	}
+
+	return m
+}
+
+func GenerateReplicas(empty bool) []netmap.Replica {
+	var res []netmap.Replica
+
+	if !empty {
+		res = append(res,
+			*GenerateReplica(false),
+			*GenerateReplica(false),
+			*GenerateEC(false),
+		)
+	}
+
+	return res
+}
+
+func GeneratePlacementPolicy(empty bool) *netmap.PlacementPolicy {
+	m := new(netmap.PlacementPolicy)
+
+	if !empty {
+		m.SetContainerBackupFactor(322)
+		m.SetFilters(GenerateFilters(false))
+		m.SetSelectors(GenerateSelectors(false))
+		m.SetReplicas(GenerateReplicas(false))
+		m.SetUnique(true)
+	}
+
+	return m
+}
+
+func GenerateAttribute(empty bool) *netmap.Attribute {
+	m := new(netmap.Attribute)
+
+	if !empty {
+		m.SetKey("attribute key")
+		m.SetValue("attribute val")
+	}
+
+	return m
+}
+
+func GenerateAttributes(empty bool) []netmap.Attribute {
+	var res []netmap.Attribute
+
+	if !empty {
+		res = append(res,
+			*GenerateAttribute(false),
+			*GenerateAttribute(false),
+		)
+	}
+
+	return res
+}
+
+func GenerateNodeInfo(empty bool) *netmap.NodeInfo {
+	m := new(netmap.NodeInfo)
+
+	if !empty {
+		m.SetAddresses("node address", "node address 2")
+		m.SetPublicKey([]byte{1, 2, 3})
+		m.SetState(33)
+		m.SetAttributes(GenerateAttributes(empty))
+	}
+
+	return m
+}
+
+func GenerateLocalNodeInfoRequestBody(_ bool) *netmap.LocalNodeInfoRequestBody {
+	m := new(netmap.LocalNodeInfoRequestBody)
+
+	return m
+}
+
+func GenerateLocalNodeInfoRequest(empty bool) *netmap.LocalNodeInfoRequest {
+	m := new(netmap.LocalNodeInfoRequest)
+
+	if !empty {
+		m.SetBody(GenerateLocalNodeInfoRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateLocalNodeInfoResponseBody(empty bool) *netmap.LocalNodeInfoResponseBody {
+	m := new(netmap.LocalNodeInfoResponseBody)
+
+	if !empty {
+		m.SetNodeInfo(GenerateNodeInfo(false))
+	}
+
+	m.SetVersion(refstest.GenerateVersion(empty))
+
+	return m
+}
+
+func GenerateLocalNodeInfoResponse(empty bool) *netmap.LocalNodeInfoResponse {
+	m := new(netmap.LocalNodeInfoResponse)
+
+	if !empty {
+		m.SetBody(GenerateLocalNodeInfoResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateNetworkParameter(empty bool) *netmap.NetworkParameter {
+	m := new(netmap.NetworkParameter)
+
+	if !empty {
+		m.SetKey([]byte("key"))
+		m.SetValue([]byte("value"))
+	}
+
+	return m
+}
+
+func GenerateNetworkConfig(empty bool) *netmap.NetworkConfig {
+	m := new(netmap.NetworkConfig)
+
+	if !empty {
+		m.SetParameters(
+			*GenerateNetworkParameter(empty),
+			*GenerateNetworkParameter(empty),
+		)
+	}
+
+	return m
+}
+
+func GenerateNetworkInfo(empty bool) *netmap.NetworkInfo {
+	m := new(netmap.NetworkInfo)
+
+	if !empty {
+		m.SetMagicNumber(228)
+		m.SetCurrentEpoch(666)
+		m.SetMsPerBlock(5678)
+		m.SetNetworkConfig(GenerateNetworkConfig(empty))
+	}
+
+	return m
+}
+
+func GenerateNetworkInfoRequestBody(_ bool) *netmap.NetworkInfoRequestBody {
+	m := new(netmap.NetworkInfoRequestBody)
+
+	return m
+}
+
+func GenerateNetworkInfoRequest(empty bool) *netmap.NetworkInfoRequest {
+	m := new(netmap.NetworkInfoRequest)
+
+	if !empty {
+		m.SetBody(GenerateNetworkInfoRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateNetworkInfoResponseBody(empty bool) *netmap.NetworkInfoResponseBody {
+	m := new(netmap.NetworkInfoResponseBody)
+
+	if !empty {
+		m.SetNetworkInfo(GenerateNetworkInfo(false))
+	}
+
+	return m
+}
+
+func GenerateNetworkInfoResponse(empty bool) *netmap.NetworkInfoResponse {
+	m := new(netmap.NetworkInfoResponse)
+
+	if !empty {
+		m.SetBody(GenerateNetworkInfoResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateNetMap(empty bool) *netmap.NetMap {
+	m := new(netmap.NetMap)
+
+	if !empty {
+		m.SetEpoch(987)
+		m.SetNodes([]netmap.NodeInfo{
+			*GenerateNodeInfo(false),
+			*GenerateNodeInfo(false),
+		})
+	}
+
+	return m
+}
+
+func GenerateSnapshotRequestBody(_ bool) *netmap.SnapshotRequestBody {
+	return new(netmap.SnapshotRequestBody)
+}
+
+func GenerateSnapshotRequest(empty bool) *netmap.SnapshotRequest {
+	m := new(netmap.SnapshotRequest)
+
+	if !empty {
+		m.SetBody(GenerateSnapshotRequestBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateRequestMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateRequestVerificationHeader(empty))
+
+	return m
+}
+
+func GenerateSnapshotResponseBody(empty bool) *netmap.SnapshotResponseBody {
+	m := new(netmap.SnapshotResponseBody)
+
+	if !empty {
+		m.SetNetMap(GenerateNetMap(false))
+	}
+
+	return m
+}
+
+func GenerateSnapshotResponse(empty bool) *netmap.SnapshotResponse {
+	m := new(netmap.SnapshotResponse)
+
+	if !empty {
+		m.SetBody(GenerateSnapshotResponseBody(false))
+	}
+
+	m.SetMetaHeader(sessiontest.GenerateResponseMetaHeader(empty))
+	m.SetVerificationHeader(sessiontest.GenerateResponseVerificationHeader(empty))
+
+	return m
+}

api/netmap/types.go

@@ -0,0 +1,783 @@
+package netmap
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/refs"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/session"
+)
+
+type LocalNodeInfoRequest struct {
+	body *LocalNodeInfoRequestBody
+
+	session.RequestHeaders
+}
+
+type LocalNodeInfoResponse struct {
+	body *LocalNodeInfoResponseBody
+
+	session.ResponseHeaders
+}
+
+// NetworkInfoRequest is a structure of NetworkInfo request.
+type NetworkInfoRequest struct {
+	body *NetworkInfoRequestBody
+
+	session.RequestHeaders
+}
+
+// NetworkInfoResponse is a structure of NetworkInfo response.
+type NetworkInfoResponse struct {
+	body *NetworkInfoResponseBody
+
+	session.ResponseHeaders
+}
+
+type Filter struct {
+	name    string
+	key     string
+	op      Operation
+	value   string
+	filters []Filter
+}
+
+type Selector struct {
+	name      string
+	count     uint32
+	clause    Clause
+	attribute string
+	filter    string
+}
+
+type Replica struct {
+	count    uint32
+	selector string
+
+	ecDataCount   uint32
+	ecParityCount uint32
+}
+
+type Operation uint32
+
+type PlacementPolicy struct {
+	replicas     []Replica
+	backupFactor uint32
+	selectors    []Selector
+	filters      []Filter
+	unique       bool
+}
+
+// Attribute of storage node.
+type Attribute struct {
+	key     string
+	value   string
+	parents []string
+}
+
+// NodeInfo of storage node.
+type NodeInfo struct {
+	publicKey  []byte
+	addresses  []string
+	attributes []Attribute
+	state      NodeState
+}
+
+// NodeState of storage node.
+type NodeState uint32
+
+// Clause of placement selector.
+type Clause uint32
+
+type LocalNodeInfoRequestBody struct{}
+
+type LocalNodeInfoResponseBody struct {
+	version  *refs.Version
+	nodeInfo *NodeInfo
+}
+
+const (
+	UnspecifiedState NodeState = iota
+	Online
+	Offline
+	Maintenance
+)
+
+const (
+	UnspecifiedOperation Operation = iota
+	EQ
+	NE
+	GT
+	GE
+	LT
+	LE
+	OR
+	AND
+	NOT
+	LIKE
+)
+
+const (
+	UnspecifiedClause Clause = iota
+	Same
+	Distinct
+)
+
+func (f *Filter) GetFilters() []Filter {
+	if f != nil {
+		return f.filters
+	}
+
+	return nil
+}
+
+func (f *Filter) SetFilters(filters []Filter) {
+	f.filters = filters
+}
+
+func (f *Filter) GetValue() string {
+	if f != nil {
+		return f.value
+	}
+
+	return ""
+}
+
+func (f *Filter) SetValue(value string) {
+	f.value = value
+}
+
+func (f *Filter) GetOp() Operation {
+	if f != nil {
+		return f.op
+	}
+	return UnspecifiedOperation
+}
+
+func (f *Filter) SetOp(op Operation) {
+	f.op = op
+}
+
+func (f *Filter) GetKey() string {
+	if f != nil {
+		return f.key
+	}
+
+	return ""
+}
+
+func (f *Filter) SetKey(key string) {
+	f.key = key
+}
+
+func (f *Filter) GetName() string {
+	if f != nil {
+		return f.name
+	}
+
+	return ""
+}
+
+func (f *Filter) SetName(name string) {
+	f.name = name
+}
+
+func (s *Selector) GetFilter() string {
+	if s != nil {
+		return s.filter
+	}
+
+	return ""
+}
+
+func (s *Selector) SetFilter(filter string) {
+	s.filter = filter
+}
+
+func (s *Selector) GetAttribute() string {
+	if s != nil {
+		return s.attribute
+	}
+
+	return ""
+}
+
+func (s *Selector) SetAttribute(attribute string) {
+	s.attribute = attribute
+}
+
+func (s *Selector) GetClause() Clause {
+	if s != nil {
+		return s.clause
+	}
+
+	return UnspecifiedClause
+}
+
+func (s *Selector) SetClause(clause Clause) {
+	s.clause = clause
+}
+
+func (s *Selector) GetCount() uint32 {
+	if s != nil {
+		return s.count
+	}
+
+	return 0
+}
+
+func (s *Selector) SetCount(count uint32) {
+	s.count = count
+}
+
+func (s *Selector) GetName() string {
+	if s != nil {
+		return s.name
+	}
+
+	return ""
+}
+
+func (s *Selector) SetName(name string) {
+	s.name = name
+}
+
+func (r *Replica) GetSelector() string {
+	if r != nil {
+		return r.selector
+	}
+
+	return ""
+}
+
+func (r *Replica) SetSelector(selector string) {
+	r.selector = selector
+}
+
+func (r *Replica) GetCount() uint32 {
+	if r != nil {
+		return r.count
+	}
+
+	return 0
+}
+
+func (r *Replica) SetCount(count uint32) {
+	r.count = count
+}
+
+func (r *Replica) GetECDataCount() uint32 {
+	if r != nil {
+		return r.ecDataCount
+	}
+
+	return 0
+}
+
+func (r *Replica) SetECDataCount(count uint32) {
+	r.ecDataCount = count
+}
+
+func (r *Replica) GetECParityCount() uint32 {
+	if r != nil {
+		return r.ecParityCount
+	}
+
+	return 0
+}
+
+func (r *Replica) SetECParityCount(count uint32) {
+	r.ecParityCount = count
+}
+
+func (p *PlacementPolicy) GetUnique() bool {
+	if p != nil {
+		return p.unique
+	}
+	return false
+}
+
+func (p *PlacementPolicy) SetUnique(unique bool) {
+	p.unique = unique
+}
+
+func (p *PlacementPolicy) GetFilters() []Filter {
+	if p != nil {
+		return p.filters
+	}
+
+	return nil
+}
+
+func (p *PlacementPolicy) SetFilters(filters []Filter) {
+	p.filters = filters
+}
+
+func (p *PlacementPolicy) GetSelectors() []Selector {
+	if p != nil {
+		return p.selectors
+	}
+
+	return nil
+}
+
+func (p *PlacementPolicy) SetSelectors(selectors []Selector) {
+	p.selectors = selectors
+}
+
+func (p *PlacementPolicy) GetContainerBackupFactor() uint32 {
+	if p != nil {
+		return p.backupFactor
+	}
+
+	return 0
+}
+
+func (p *PlacementPolicy) SetContainerBackupFactor(backupFactor uint32) {
+	p.backupFactor = backupFactor
+}
+
+func (p *PlacementPolicy) GetReplicas() []Replica {
+	if p == nil {
+		return nil
+	}
+
+	return p.replicas
+}
+
+func (p *PlacementPolicy) SetReplicas(replicas []Replica) {
+	p.replicas = replicas
+}
+
+func (a *Attribute) GetKey() string {
+	if a != nil {
+		return a.key
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetKey(v string) {
+	a.key = v
+}
+
+func (a *Attribute) GetValue() string {
+	if a != nil {
+		return a.value
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetValue(v string) {
+	a.value = v
+}
+
+func (a *Attribute) GetParents() []string {
+	if a != nil {
+		return a.parents
+	}
+
+	return nil
+}
+
+func (a *Attribute) SetParents(parent []string) {
+	a.parents = parent
+}
+
+func (ni *NodeInfo) GetPublicKey() []byte {
+	if ni != nil {
+		return ni.publicKey
+	}
+
+	return nil
+}
+
+func (ni *NodeInfo) SetPublicKey(v []byte) {
+	ni.publicKey = v
+}
+
+// GetAddress returns node's network address.
+//
+// Deprecated: use IterateAddresses.
+func (ni *NodeInfo) GetAddress() (addr string) {
+	ni.IterateAddresses(func(s string) bool {
+		addr = s
+		return true
+	})
+
+	return
+}
+
+// SetAddress sets node's network address.
+//
+// Deprecated: use SetAddresses.
+func (ni *NodeInfo) SetAddress(v string) {
+	ni.SetAddresses(v)
+}
+
+// SetAddresses sets list of network addresses of the node.
+func (ni *NodeInfo) SetAddresses(v ...string) {
+	ni.addresses = v
+}
+
+// NumberOfAddresses returns number of network addresses of the node.
+func (ni *NodeInfo) NumberOfAddresses() int {
+	if ni != nil {
+		return len(ni.addresses)
+	}
+
+	return 0
+}
+
+// IterateAddresses iterates over network addresses of the node.
+// Breaks iteration on f's true return.
+//
+// Handler should not be nil.
+func (ni *NodeInfo) IterateAddresses(f func(string) bool) {
+	if ni != nil {
+		for i := range ni.addresses {
+			if f(ni.addresses[i]) {
+				break
+			}
+		}
+	}
+}
+
+func (ni *NodeInfo) GetAttributes() []Attribute {
+	if ni != nil {
+		return ni.attributes
+	}
+
+	return nil
+}
+
+func (ni *NodeInfo) SetAttributes(v []Attribute) {
+	ni.attributes = v
+}
+
+func (ni *NodeInfo) GetState() NodeState {
+	if ni != nil {
+		return ni.state
+	}
+
+	return UnspecifiedState
+}
+
+func (ni *NodeInfo) SetState(state NodeState) {
+	ni.state = state
+}
+
+func (l *LocalNodeInfoResponseBody) GetVersion() *refs.Version {
+	if l != nil {
+		return l.version
+	}
+
+	return nil
+}
+
+func (l *LocalNodeInfoResponseBody) SetVersion(version *refs.Version) {
+	l.version = version
+}
+
+func (l *LocalNodeInfoResponseBody) GetNodeInfo() *NodeInfo {
+	if l != nil {
+		return l.nodeInfo
+	}
+
+	return nil
+}
+
+func (l *LocalNodeInfoResponseBody) SetNodeInfo(nodeInfo *NodeInfo) {
+	l.nodeInfo = nodeInfo
+}
+
+func (l *LocalNodeInfoRequest) GetBody() *LocalNodeInfoRequestBody {
+	if l != nil {
+		return l.body
+	}
+	return nil
+}
+
+func (l *LocalNodeInfoRequest) SetBody(body *LocalNodeInfoRequestBody) {
+	l.body = body
+}
+
+func (l *LocalNodeInfoResponse) GetBody() *LocalNodeInfoResponseBody {
+	if l != nil {
+		return l.body
+	}
+	return nil
+}
+
+func (l *LocalNodeInfoResponse) SetBody(body *LocalNodeInfoResponseBody) {
+	l.body = body
+}
+
+// NetworkParameter represents NeoFS network parameter.
+type NetworkParameter struct {
+	k, v []byte
+}
+
+// GetKey returns parameter key.
+func (x *NetworkParameter) GetKey() []byte {
+	if x != nil {
+		return x.k
+	}
+
+	return nil
+}
+
+// SetKey sets parameter key.
+func (x *NetworkParameter) SetKey(k []byte) {
+	x.k = k
+}
+
+// GetValue returns parameter value.
+func (x *NetworkParameter) GetValue() []byte {
+	if x != nil {
+		return x.v
+	}
+
+	return nil
+}
+
+// SetValue sets parameter value.
+func (x *NetworkParameter) SetValue(v []byte) {
+	x.v = v
+}
+
+// NetworkConfig represents NeoFS network configuration.
+type NetworkConfig struct {
+	ps []NetworkParameter
+}
+
+// NumberOfParameters returns number of network parameters.
+func (x *NetworkConfig) NumberOfParameters() int {
+	if x != nil {
+		return len(x.ps)
+	}
+
+	return 0
+}
+
+// IterateParameters iterates over network parameters.
+// Breaks iteration on f's true return.
+//
+// Handler must not be nil.
+func (x *NetworkConfig) IterateParameters(f func(*NetworkParameter) bool) {
+	if x != nil {
+		for i := range x.ps {
+			if f(&x.ps[i]) {
+				break
+			}
+		}
+	}
+}
+
+// SetParameters sets list of network parameters.
+func (x *NetworkConfig) SetParameters(v ...NetworkParameter) {
+	x.ps = v
+}
+
+// NetworkInfo groups information about
+// NeoFS network.
+type NetworkInfo struct {
+	curEpoch, magicNum uint64
+
+	msPerBlock int64
+
+	netCfg *NetworkConfig
+}
+
+// GetCurrentEpoch returns number of the current epoch.
+func (i *NetworkInfo) GetCurrentEpoch() uint64 {
+	if i != nil {
+		return i.curEpoch
+	}
+
+	return 0
+}
+
+// SetCurrentEpoch sets number of the current epoch.
+func (i *NetworkInfo) SetCurrentEpoch(epoch uint64) {
+	i.curEpoch = epoch
+}
+
+// GetMagicNumber returns magic number of the sidechain.
+func (i *NetworkInfo) GetMagicNumber() uint64 {
+	if i != nil {
+		return i.magicNum
+	}
+
+	return 0
+}
+
+// SetMagicNumber sets magic number of the sidechain.
+func (i *NetworkInfo) SetMagicNumber(magic uint64) {
+	i.magicNum = magic
+}
+
+// GetMsPerBlock returns MillisecondsPerBlock network parameter.
+func (i *NetworkInfo) GetMsPerBlock() int64 {
+	if i != nil {
+		return i.msPerBlock
+	}
+
+	return 0
+}
+
+// SetMsPerBlock sets MillisecondsPerBlock network parameter.
+func (i *NetworkInfo) SetMsPerBlock(v int64) {
+	i.msPerBlock = v
+}
+
+// GetNetworkConfig returns NeoFS network configuration.
+func (i *NetworkInfo) GetNetworkConfig() *NetworkConfig {
+	if i != nil {
+		return i.netCfg
+	}
+
+	return nil
+}
+
+// SetNetworkConfig sets NeoFS network configuration.
+func (i *NetworkInfo) SetNetworkConfig(v *NetworkConfig) {
+	i.netCfg = v
+}
+
+// NetworkInfoRequestBody is a structure of NetworkInfo request body.
+type NetworkInfoRequestBody struct{}
+
+// NetworkInfoResponseBody is a structure of NetworkInfo response body.
+type NetworkInfoResponseBody struct {
+	netInfo *NetworkInfo
+}
+
+// GetNetworkInfo returns information about the NeoFS network.
+func (i *NetworkInfoResponseBody) GetNetworkInfo() *NetworkInfo {
+	if i != nil {
+		return i.netInfo
+	}
+
+	return nil
+}
+
+// SetNetworkInfo sets information about the NeoFS network.
+func (i *NetworkInfoResponseBody) SetNetworkInfo(netInfo *NetworkInfo) {
+	i.netInfo = netInfo
+}
+
+func (l *NetworkInfoRequest) GetBody() *NetworkInfoRequestBody {
+	if l != nil {
+		return l.body
+	}
+	return nil
+}
+
+func (l *NetworkInfoRequest) SetBody(body *NetworkInfoRequestBody) {
+	l.body = body
+}
+
+func (l *NetworkInfoResponse) GetBody() *NetworkInfoResponseBody {
+	if l != nil {
+		return l.body
+	}
+	return nil
+}
+
+func (l *NetworkInfoResponse) SetBody(body *NetworkInfoResponseBody) {
+	l.body = body
+}
+
+// NetMap represents structure of NeoFS network map.
+type NetMap struct {
+	epoch uint64
+
+	nodes []NodeInfo
+}
+
+// Epoch returns revision number of the NetMap.
+func (x *NetMap) Epoch() uint64 {
+	if x != nil {
+		return x.epoch
+	}
+
+	return 0
+}
+
+// SetEpoch sets revision number of the NetMap.
+func (x *NetMap) SetEpoch(v uint64) {
+	x.epoch = v
+}
+
+// Nodes returns nodes presented in the NetMap.
+func (x *NetMap) Nodes() []NodeInfo {
+	if x != nil {
+		return x.nodes
+	}
+
+	return nil
+}
+
+// SetNodes sets nodes presented in the NetMap.
+func (x *NetMap) SetNodes(v []NodeInfo) {
+	x.nodes = v
+}
+
+// SnapshotRequestBody represents structure of Snapshot request body.
+type SnapshotRequestBody struct{}
+
+// SnapshotRequest represents structure of Snapshot request.
+type SnapshotRequest struct {
+	body *SnapshotRequestBody
+
+	session.RequestHeaders
+}
+
+func (x *SnapshotRequest) GetBody() *SnapshotRequestBody {
+	if x != nil {
+		return x.body
+	}
+
+	return nil
+}
+
+func (x *SnapshotRequest) SetBody(body *SnapshotRequestBody) {
+	x.body = body
+}
+
+// SnapshotResponseBody represents structure of Snapshot response body.
+type SnapshotResponseBody struct {
+	netMap *NetMap
+}
+
+// NetMap returns current NetMap.
+func (x *SnapshotResponseBody) NetMap() *NetMap {
+	if x != nil {
+		return x.netMap
+	}
+
+	return nil
+}
+
+// SetNetMap sets current NetMap.
+func (x *SnapshotResponseBody) SetNetMap(netMap *NetMap) {
+	x.netMap = netMap
+}
+
+// SnapshotResponse represents structure of Snapshot response.
+type SnapshotResponse struct {
+	body *SnapshotResponseBody
+
+	session.ResponseHeaders
+}
+
+func (x *SnapshotResponse) GetBody() *SnapshotResponseBody {
+	if x != nil {
+		return x.body
+	}
+
+	return nil
+}
+
+func (x *SnapshotResponse) SetBody(body *SnapshotResponseBody) {
+	x.body = body
+}

api/object/attributes.go

@@ -0,0 +1,187 @@
+package object
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+)
+
+// SysAttributePrefix is a prefix of key to system attribute.
+const SysAttributePrefix = "__SYSTEM__"
+
+const (
+	// SysAttributeUploadID marks smaller parts of a split bigger object.
+	SysAttributeUploadID = SysAttributePrefix + "UPLOAD_ID"
+
+	// SysAttributeExpEpoch tells GC to delete object after that epoch.
+	SysAttributeExpEpoch = SysAttributePrefix + "EXPIRATION_EPOCH"
+
+	// SysAttributeTickEpoch defines what epoch must produce object
+	// notification.
+	SysAttributeTickEpoch = SysAttributePrefix + "TICK_EPOCH"
+
+	// SysAttributeTickTopic defines what topic object notification
+	// must be sent to.
+	SysAttributeTickTopic = SysAttributePrefix + "TICK_TOPIC"
+)
+
+// SysAttributePrefixNeoFS is a prefix of key to system attribute.
+// Deprecated: use SysAttributePrefix.
+const SysAttributePrefixNeoFS = "__NEOFS__"
+
+const (
+	// SysAttributeUploadIDNeoFS marks smaller parts of a split bigger object.
+	// Deprecated: use SysAttributeUploadID.
+	SysAttributeUploadIDNeoFS = SysAttributePrefixNeoFS + "UPLOAD_ID"
+
+	// SysAttributeExpEpochNeoFS tells GC to delete object after that epoch.
+	// Deprecated: use SysAttributeExpEpoch.
+	SysAttributeExpEpochNeoFS = SysAttributePrefixNeoFS + "EXPIRATION_EPOCH"
+
+	// SysAttributeTickEpochNeoFS defines what epoch must produce object
+	// notification.
+	// Deprecated: use SysAttributeTickEpoch.
+	SysAttributeTickEpochNeoFS = SysAttributePrefixNeoFS + "TICK_EPOCH"
+
+	// SysAttributeTickTopicNeoFS defines what topic object notification
+	// must be sent to.
+	// Deprecated: use SysAttributeTickTopic.
+	SysAttributeTickTopicNeoFS = SysAttributePrefixNeoFS + "TICK_TOPIC"
+)
+
+// NotificationInfo groups information about object notification
+// that can be written to object.
+//
+// Topic is an optional field.
+type NotificationInfo struct {
+	epoch uint64
+	topic string
+}
+
+// Epoch returns object notification tick
+// epoch.
+func (n NotificationInfo) Epoch() uint64 {
+	return n.epoch
+}
+
+// SetEpoch sets object notification tick
+// epoch.
+func (n *NotificationInfo) SetEpoch(epoch uint64) {
+	n.epoch = epoch
+}
+
+// Topic return optional object notification
+// topic.
+func (n NotificationInfo) Topic() string {
+	return n.topic
+}
+
+// SetTopic sets optional object notification
+// topic.
+func (n *NotificationInfo) SetTopic(topic string) {
+	n.topic = topic
+}
+
+// WriteNotificationInfo writes NotificationInfo to the Object via attributes. Object must not be nil.
+//
+// Existing notification attributes are expected to be key-unique, otherwise undefined behavior.
+func WriteNotificationInfo(o *Object, ni NotificationInfo) {
+	h := o.GetHeader()
+	if h == nil {
+		h = new(Header)
+		o.SetHeader(h)
+	}
+
+	var (
+		attrs = h.GetAttributes()
+
+		epoch = strconv.FormatUint(ni.Epoch(), 10)
+		topic = ni.Topic()
+
+		changedEpoch bool
+		changedTopic bool
+		deleteIndex  = -1
+	)
+
+	for i := range attrs {
+		switch attrs[i].GetKey() {
+		case SysAttributeTickEpoch, SysAttributeTickEpochNeoFS:
+			attrs[i].SetValue(epoch)
+			changedEpoch = true
+		case SysAttributeTickTopic, SysAttributeTickTopicNeoFS:
+			changedTopic = true
+
+			if topic == "" {
+				deleteIndex = i
+				break
+			}
+
+			attrs[i].SetValue(topic)
+		}
+
+		if changedEpoch && changedTopic {
+			break
+		}
+	}
+
+	if deleteIndex != -1 {
+		// approach without allocation/waste
+		// coping works since the attributes
+		// order is not important
+		attrs[deleteIndex] = attrs[len(attrs)-1]
+		attrs = attrs[:len(attrs)-1]
+	}
+
+	if !changedEpoch {
+		index := len(attrs)
+		attrs = append(attrs, Attribute{})
+		attrs[index].SetKey(SysAttributeTickEpoch)
+		attrs[index].SetValue(epoch)
+	}
+
+	if !changedTopic && topic != "" {
+		index := len(attrs)
+		attrs = append(attrs, Attribute{})
+		attrs[index].SetKey(SysAttributeTickTopic)
+		attrs[index].SetValue(topic)
+	}
+
+	h.SetAttributes(attrs)
+}
+
+// ErrNotificationNotSet means that object does not have notification.
+var ErrNotificationNotSet = errors.New("notification for object is not set")
+
+// GetNotificationInfo looks for object notification attributes. Object must not be nil.
+// Returns ErrNotificationNotSet if no corresponding attributes
+// were found.
+//
+// Existing notification attributes are expected to be key-unique, otherwise undefined behavior.
+func GetNotificationInfo(o *Object) (*NotificationInfo, error) {
+	var (
+		foundEpoch bool
+		ni         = new(NotificationInfo)
+	)
+
+	for _, attr := range o.GetHeader().GetAttributes() {
+		switch key := attr.GetKey(); key {
+		case SysAttributeTickEpoch, SysAttributeTickEpochNeoFS:
+			epoch, err := strconv.ParseUint(attr.GetValue(), 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("could not parse epoch: %w", err)
+			}
+
+			ni.SetEpoch(epoch)
+
+			foundEpoch = true
+		case SysAttributeTickTopic, SysAttributeTickTopicNeoFS:
+			ni.SetTopic(attr.GetValue())
+		}
+	}
+
+	if !foundEpoch {
+		return nil, ErrNotificationNotSet
+	}
+
+	return ni, nil
+}

api/object/attributes_test.go

@@ -0,0 +1,89 @@
+package object
+
+import (
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestSetNotification(t *testing.T) {
+	o := new(Object)
+
+	ni := NotificationInfo{
+		epoch: 10,
+		topic: "test",
+	}
+
+	WriteNotificationInfo(o, ni)
+
+	var foundEpoch, foundTopic bool
+
+	for _, attr := range o.GetHeader().GetAttributes() {
+		switch key := attr.GetKey(); key {
+		case SysAttributeTickEpoch:
+			require.Equal(t, false, foundEpoch)
+
+			uEpoch, err := strconv.ParseUint(attr.GetValue(), 10, 64)
+			require.NoError(t, err)
+
+			require.Equal(t, ni.Epoch(), uEpoch)
+			foundEpoch = true
+		case SysAttributeTickTopic:
+			require.Equal(t, false, foundTopic)
+			require.Equal(t, ni.Topic(), attr.GetValue())
+			foundTopic = true
+		}
+	}
+
+	require.Equal(t, true, foundEpoch && foundTopic)
+}
+
+func TestGetNotification(t *testing.T) {
+	o := new(Object)
+
+	attr := []Attribute{
+		{SysAttributeTickEpoch, "10"},
+		{SysAttributeTickTopic, "test"},
+	}
+
+	h := new(Header)
+	h.SetAttributes(attr)
+
+	o.SetHeader(h)
+
+	t.Run("No error", func(t *testing.T) {
+		ni, err := GetNotificationInfo(o)
+		require.NoError(t, err)
+
+		require.Equal(t, uint64(10), ni.Epoch())
+		require.Equal(t, "test", ni.Topic())
+	})
+}
+
+func TestIntegration(t *testing.T) {
+	o := new(Object)
+
+	var (
+		ni1 = NotificationInfo{
+			epoch: 10,
+			topic: "",
+		}
+		ni2 = NotificationInfo{
+			epoch: 11,
+			topic: "test",
+		}
+	)
+
+	WriteNotificationInfo(o, ni1)
+	WriteNotificationInfo(o, ni2)
+
+	t.Run("double set", func(t *testing.T) {
+		ni, err := GetNotificationInfo(o)
+		require.NoError(t, err)
+
+		require.Equal(t, ni2.epoch, ni.Epoch())
+		require.Equal(t, ni2.topic, ni.Topic())
+		require.Equal(t, 2, len(o.GetHeader().GetAttributes()))
+	})
+}

api/object/bench_test.go

@@ -0,0 +1,45 @@
+package object
+
+import (
+	"math/rand"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func randString(n int) string {
+	x := make([]byte, n)
+	for i := range x {
+		x[i] = byte('a' + rand.Intn('z'-'a'))
+	}
+	return string(x)
+}
+
+func BenchmarkAttributesMarshal(b *testing.B) {
+	attrs := make([]Attribute, 50)
+	for i := range attrs {
+		attrs[i].key = SysAttributePrefix + randString(10)
+		attrs[i].val = randString(10)
+	}
+	raw := AttributesToGRPC(attrs)
+	require.Equal(b, len(raw), len(attrs))
+
+	b.Run("marshal", func(b *testing.B) {
+		b.ReportAllocs()
+		for range b.N {
+			res := AttributesToGRPC(attrs)
+			if len(res) != len(raw) {
+				b.FailNow()
+			}
+		}
+	})
+	b.Run("unmarshal", func(b *testing.B) {
+		b.ReportAllocs()
+		for range b.N {
+			res, err := AttributesFromGRPC(raw)
+			if err != nil || len(res) != len(raw) {
+				b.FailNow()
+			}
+		}
+	})
+}