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.forgejo/ISSUE_TEMPLATE/bug_report.md
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---
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`):

1
.forgejo/ISSUE_TEMPLATE/config.yml
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@ -1 +0,0 @@
blank_issues_enabled: false

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

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83
.forgejo/markdown.tmpl
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# Protocol Documentation
<a name="top"></a>
## Table of Contents
{{range .Files}}
{{$file_name := .Name}}- [{{.Name}}](#{{.Name}})
{{if .Services}} - Services
{{range .Services}} - [{{.Name}}](#{{.FullName}})
{{end}}{{end}}
{{if .Messages}} - Messages
{{range .Messages}} - [{{.LongName}}](#{{.FullName}})
{{end}}{{end}}
{{end}}
- [Scalar Value Types](#scalar-value-types)
{{range .Files}}
{{$file_name := .Name}}
<a name="{{.Name}}"></a>
<p align="right"><a href="#top">Top</a></p>
## {{.Name}}
{{.Description}}
{{range .Services}}
<a name="{{.FullName}}"></a>
### Service "{{.FullName}}"
{{.Description}}
```
{{range .Methods -}}
rpc {{.Name}}({{if .RequestStreaming}}stream {{end}}{{.RequestLongType}}) returns ({{if .ResponseStreaming}}stream {{end}}{{.ResponseLongType}});
{{end}}
```
{{range .Methods -}}
#### Method {{.Name}}
{{.Description}}
| Name | Input | Output |
| ---- | ----- | ------ |
| {{.Name}} | [{{.RequestLongType}}](#{{.RequestFullType}}) | [{{.ResponseLongType}}](#{{.ResponseFullType}}) |
{{end}}{{end}} <!-- end services -->
{{range .Messages}}
<a name="{{.FullName}}"></a>
### Message {{.LongName}}
{{.Description}}
{{if .HasFields}}
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
{{range .Fields -}}
| {{.Name}} | [{{.LongType}}](#{{.FullType}}) | {{.Label}} | {{nobr .Description}}{{if .DefaultValue}} Default: {{.DefaultValue}}{{end}} |
{{end}}{{end}}
{{end}} <!-- end messages -->
{{range .Enums}}
<a name="{{.FullName}}"></a>
### {{.LongName}}
{{.Description}}
| Name | Number | Description |
| ---- | ------ | ----------- |
{{range .Values -}}
| {{.Name}} | {{.Number}} | {{nobr .Description}} |
{{end}}
{{end}} <!-- end enums -->
{{end}}
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
{{range .Scalars -}}
| <a name="{{.ProtoType}}" /> {{.ProtoType}} | {{.Notes}} | {{.CppType}} | {{.JavaType}} | {{.PythonType}} |
{{end}}

19
.forgejo/workflows/dco.yaml
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name: DCO action
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: '1.22'
- name: Run commit format checker
uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3
with:
from: 'origin/${{ github.event.pull_request.base.ref }}'

17
.forgejo/workflows/fmt.yaml
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name: Formatters
on: [pull_request]
jobs:
fmt:
name: Run fmt
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v3
- name: Install deps
run: |
apt update
apt install -y clang-format
- name: Run fmt
run: |
make fmt
git diff --exit-code --quiet

18
.forgejo/workflows/pre-commit.yaml
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name: Pre-commit hooks
on: [pull_request]
jobs:
pre-commit:
name: Pre-commit
env:
# Skip pre-commit hooks which are executed by other actions.
SKIP: make-fmt
runs-on: ubuntu-22.04
steps:
- uses: actions/checkout@v3
- name: Install deps
run: |
apt update
apt install -y pre-commit
- name: Run pre-commit
run: pre-commit run --all-files --hook-stage manual --color=always

1
.gitignore vendored
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@ -1 +0,0 @@
.idea

24
.pre-commit-config.yaml
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@ -1,24 +0,0 @@
repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v4.6.0
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: ".svg$"
- repo: local
hooks:
- id: make-fmt
name: Run make fmt
entry: make fmt
language: system
pass_filenames: false

498
CHANGELOG.md
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@ -1,498 +0,0 @@
# Changelog
## [Unreleased]
### Changed
- Add `__SYSTEM__` attribute prefix (#12, #14)
- Add `allow_impersonate` flag to bearer token (#18)
### Removed
- Reputation system (#22)
- All `subnet` related fields and types (#25)
- Storage group (#19)
## [2.14.0] - 2022-09-23 - Anmado (안마도, 鞍馬島)
### Added
- `NetmapSnapsot` RPC to `netmap.NetmapService` (#228)
- Well-known object attribute `FilePath` of `object.Header.Attribute` (#238)
- `MAINTENANCE` value of `netmap.NodeInfo.State` enum (#237)
- `NODE_UNDER_MAINTENANCE` code to `status.CommonFail` status section (#237)
- Well-known node attribute `ExternalAddr` of `netmap.NodeInfo.Attribute` (#235)
### Changed
- Object session can be issued for a group of objects (#202)
- System network parameters are explicitly declared in `NetworkConfig.Parameter` (#214)
## [2.13.1] - 2022-08-01
### Added
- `EACL_NOT_FOUND` status code to the `container` section (#230)
## [2.13.0] - 2022-06-21 - Yeonpyeongdo (연평도, 延坪島)
### Added
- Extended headers usage clarification (#204)
- `OUT_OF_RANGE` status code to the `object` section (#208)
- Disabling homomorphic hashing container setting (#217)
- `LOCK` object behaviour clarification (#221)
- Storage group members uniqueness constraint (#222)
- WalletConnect signature scheme (#206)
- `SIGNATURE_VERIFICATION_FAIL` status code to the `CommonFail` section (#225)
### Deprecated
- Storage group's expiration epoch field (#205)
### Fixed
- English language typos (#216)
## [2.12.0] - 2022-02-22 - Heuksando (흑산도, 黑山島)
Network magic, main status codes, object locks and notifications.
### Added
- `magic_number` field to `RequestMetaHeader` message (#82)
- `WRONG_MAGIC_NUMBER` status code to `CommonFail` section (#82)
- Well-known object attributes related to notifications `__NEOFS__TICK_EPOCH`
and `__NEOFS__TICK_TOPIC` (#193)
- `ACCESS_DENIED` status code to `Object` section (#189)
- `OBJECT_NOT_FOUND`, `CONTAINER_NOT_FOUND` and `OBJECT_ALREADY_REMOVED` status codes (#190)
- `TOKEN_NOT_FOUND` and `TOKEN_EXPIRED` status codes to `Session` section (#191)
- `LOCK` value of `object.Type` enum (#194)
- `Lock` message with payload content of `LOCK` objects (#194)
- `LOCKED` and `LOCK_NON_REGULAR_OBJECT` status codes to `Object` section (#194)
- `scheme` field of type `SignatureScheme` to `Signature` message which determines
signature scheme (#55)
- `SignatureRFC6979` message (#203)
### Changed
- Type of `signature` field in `ContainerService` requests to `SignatureRFC6979` (#203)
## [2.11.0] - 2021-12-02 - Sinjido (신지도, 薪智島)
Subnets and status responses.
### Added
- `Status` message structure (#150)
- `status` field of `Status` type to `ResponseMetaHeader` message (#150)
- `Subnet` message structure (#180)
- `subnet` field of `Subnet` type to `PlacementPolicy` message (#179)
### Changed
- Subnet attributes in `NodeInfo` (#181)
## [2.10.0] - 2021-10-14 - Udo (우도, 牛島)
NNS integration, detailed network info and ACL rules for non-native services.
### Added
- ACL header type for services (#173)
- Side chain block duration and NeoFS network config fields in `NetworkInfo`
message (#172)
- Well-known container attributes for NNS integration (#177)
## [2.9.1] - 2021-08-26
### Changed
- String presentation of object type enum.
## [2.9.0] - 2021-08-16 - Anmyeondo (안면도, 安眠島)
Support "common prefix" attribute match operation to simplify filesystem
directory tree-like structures implementation in NeoFS protocol gateways.
### Added
- `COMMON_PREFIX` object attribute match type.
- Storage node's attribute escape symbol description.
## [2.8.0] - 2021-06-25 - Muuido (무의도, 舞衣島)
Storage nodes with a group of network endpoints.
### Changed
- `address` field of `netmap.NodeInfo` message became `repeated`.
## [2.7.0] - 2021-06-03 - Seongmodo (석모도, 席毛島)
Container service sessions.
### Added
#### Session
- `ContainerSessionContext` message.
- `ContainerSessionContext` value of `context` oneof to `SessionToken.Body` message.
#### Container
##### Get
- `session_token` field of type `session.SessionToken` to `GetResponse.Body` message.
- `signature` field of type `refs.Signature` to `GetResponse.Body` message.
##### GetExtendedACL
- `session_token` field of type `session.SessionToken` to `GetExtendedACLResponse.Body` message.
## [2.6.0] - 2021-05-07 - Daecheongdo (대청도, 大靑島)
### Added
- Reputation package with reputation service and corresponding type definitions.
## [2.5.0] - 2021-03-19 - Jebudo (제부도, 濟扶島)
This release contains changes and fixes for NEO3 testnet launch.
### Added
- Well-known object attribute `Content-Type`.
### Changed
- Namespace for C# has been changed to `Neo.FileStorage.API`.
## [2.4.0] - 2021-02-26 - Ganghwado (강화도, 江華島)
This release provides new RPC method to fetch network info from storage node.
By getting current epoch value, application might set up correct expiration
values in the objects.
### Added
- `netmap.NetworkInfo` request for getting node's network view.
- Release instructions.
### Changed
- Clarified processing of empty search query in `object.Search` RPC.
- Specified connection of tombstone expiration value with well-known
`__NEOFS__EXPIRATION_EPOCH` object attribute.
## [2.3.0] - 2021-02-11 - Seonyudo (선유도, 仙遊島)
This release brings support for nodes to exchange information about disk space
used by each Container. This information will be used by Inner Ring nodes to
calculate basic rewards and payments.
Another significant change is UN/LOCODE support for node's attributes describing
geographical location. From now on, most of the geographical attributes will be
calculated automatically from a single `UN-LOCODE` attribute in a deterministic
manner.
### Added
- Added `container.AnnounceUsedSpace` request for announcing disk space consumed
by container's objects on the node
- Added `Continent` well-known node's attribute
- Added `SubDivCode` well-known node's attribute
- Added `Location` well-known node's attribute
- Added `CounrtyCode` well-known node's attribute
- Added `STRING_NOT_EQUAL` match type
- Added `NOT_PRESENT` match type
- Added JSON names for search request filter fields
### Changed
- `Locode` well-known node's attribute renamed to `UN-LOCODE`. It will be used
as a base for calculating most of the node's geographical attributes.
- `Region` well-known node's attribute renamed to `SubDiv`
### Removed
- Removed `City` well-known node's attribute
- Removed `Region` well-known node's attribute
## [2.2.1] - 2021-01-15
Define "well-known" X-headers
### Added
- Description of the format of "well-known" X-headers that affect system
behavior
- X-header key to netmap epoch value
- X-header key to netmap lookup depth value
## [2.2.0] - 2020-12-30 - Yeouido (여의도, 汝矣島)
Storage Groups based Data Audit updates
### Added
- `audit.DataAuditResult` message for recording audit result is added
### Changed
- `object.ShortHeader` now has `payload_hash` and `homomorphic_hash` fields
## [2.1.1] - 2020-12-17
Minor documentation fixes
### Changed
- Clarify JSON encoding for `ObjectID`, `ContainerID` and `OwnerID`
- Clarify object field usage in some requests' eACL filters
## [2.1.0] - 2020-12-11 - Modo (모도, 茅島)
Object split and deletion improvements, documentation clarifications.
### Added
- `$Object:objectID` added to the list of available ACL and Search filters
- `split_id` field added in `object.Object.header`
- `$Object:split.splitID` search filter added
- json_name notation added to `acl.EACLTable.Version` field
- Adding `tombstone` field with newly created tombstone address field to
`object.DeleteResponse.Body`
- `tombstone` package added
- Tombstone payload definition added as `tombstone.Tombstone` message
- `SplitInfo` message added to `object` package
- `split_info` field added to `object.GetResponse.Body`
- `split_info` field added to `object.HeadResponse.Body`
- `split_info` field added to `object.GetRangeResponse.Body`
- `raw` flag added in `object.GetRangeRequest.Body`
### Changed
- Clarified special search index descriptions
- Clarified various types encoding formats descriptions
### Removed
- `$Object:CHILDFREE` filter description removed from well-known list
- `$Object:LEAF` filter description removed from well-known list
## [2.0.2] - 2020-10-27
More "well-known" application attributes and documentation updates.
### Added
- Added "well-known" attributes list for extended ACL and object search filters
- Added `Name`, `Timestamp` "well-known" application attributes for container
- Added `Name`, `FileName`, `Timestamp` "well-known" application attributes for
object
### Changed
- `BearerToken.owner_id` field description changed
- `Subnet` container attribute now has `__NEOFS__` prefix
- Search and ACL filters now have `key` and `value` fields
## [2.0.1] - 2020-10-19
Documentation updates and JSON field names definition
### Added
- Added "well-known" attributes list for `netmap.NodeInfo`
- Added "well-known" attributes list for objects
- Added "well-known" attributes list for containers
- JSON field names defined for most of data structures
### Changed
- Documentation updated for all packages fixing typos and minor inaccuracies
- `acl.EACLRecord.Target.key_list` field renamed to `keys` for consistency
### Removed
- Human-written documentation will now be only in [NeoFS
Specification](https://github.com/nspcc-dev/neofs-spec)
## [2.0.0] - 2020-09-07 - Jindo (진도, 珍島)
Major API refactoring and simplification.
### Added
- `neo.fs.v2` prefix added to all package names
- `container.Attributes` field added
- `refs.ContainerID` added as a separate type
- `refs.OwnerID` added as a separate type
- Object Search query language defined in `object.SearchRequest.Body.filter`
- `netmap` package added
- `refs.Signature` defined as a separate type
- `session.SessionToken` now has context information for each service
- `refs.Version` defined as a separate type
- `refs.Version` field added to all messages stored in SmartContracts
- `refs.Checksum` defined as a separate type
- `netmap.LocalNodeInfo` request added to get actual information from connected
peer
### Changed
- Extended ACL Table format changed
- Protobuf definitions style changed to follow Google Style Guide
- `System` and `Extended` Object headers are merged into on `object.Header` type
- `object.UserHeader` renamed to `object.Header.Attribute`
- `refs.ObjectID` is now a hash of the `object.Header` field, which contains
hash of payload
- `StorageGroup` information moved to Object's payload
- `netmap.NodeInfo.options` renamed to `netmap.NodeInfo.attributes` and it uses
a separate `netmap.NodeInfo.Attribute` type now.
- `netmap.NodeInfo.Attribute` type now has a list of parents to construct a tree
- Session Token renamed to `session.SessionToken` from `session.Token`
- All Requests and Responses now have a common "body-meta-verify" structure
- Meta and Verification headers now follow Matryoshka-style composition
- SessionToken and BearerToken are now part of Meta header
- Object placement policy format is simplified and defined in `netmap` package
- `object.Head()` request now returns either short header or full header with a
signature
### Removed
- gogoproto is not used anymore
- `decimal` package merged into `accounting` package
- `query` package merged into `object` package
- `storagegroup` package merged into `object` package
- `bootstrap` package merged into `netmap` package
- `state` package removed
- `service` package removed. Merged with `session` package
- `state` package removed. It will be implementation specific part of neofs-node
- `SpreadMap` functionality removed from `netmap` package
- Unixtime support removed from creation timestamps, leaving only Epoch number
- `Link` type removed from Object headers
- `Redirect` type support removed from Object headers
- Withdrawal and Account Lock functionality removed from `accounting` service
- Deposit functionality removed from `accounting` service
- Settlement functionality removed from `accounting` service
## [1.2.0] - 2020-07-08
### Added
- ```acl.EACLRecord```, ```acl.EACLTable``` messages for the table of extended
ACL rules.
## [1.1.0] - 2020-06-18
### Added
- Extended ACL support in container service.
- Bearer token support in the object service requests.
- Extended headers for the requests in `service.RequestMetaHeader`
## [1.0.0] - 2020-05-16
Bump major release
## [0.7.5] - 2020-05-15
### Added
- `OwnerKey` bytes field to `service.Token.TokenInfo` message.
## [0.7.4] - 2020-05-08
### Added
- `service.TokenLifetime` message.
### Changed
- `service.Token` structure.
- `session.Session.Create` RPC signature.
- `session.CreateRequest` structure.
- `session.CreateResponse` structure.
## [0.7.3] - 2020-04-28
### Changed
- `CreationPoint` disabled stringer method.
## [0.7.2] - 2020-04-28
### Added
- `Raw` boolean field to `service.RequestMetaHeader`.
- `Token` message field to `service.RequestVerificationHeader`.
### Replaced
- `Token` message from `session` to `service` package.
- `Signature` message with `Sign` one in `service` package.
### Changed
- `Token` message structure.
### Removed
- `Raw` field from `object.GetRequest` and `object.HeadRequest` messages.
- `Token` field from `object.PutRequest.PutHeader` and `object.DeleteRequest`
messages.
- `VerificationHeader` message.
## [0.7.1] - 2020-04-20
### Added
- Method to change current node state. (`state.ChangeState`)
## [0.7.0] - 2020-04-16
### Added
- A numerical field CopiesNumber into `object.PutRequest.PutHeader` message.
## [0.6.1] - 2020-04-15
### Added
- State field into Bootstrap request.
- Request.State enum: Unknown, Online, Offline.
## [0.6.0] - 2020-04-02
### Added
- ACL package with enum of ACL targets.
### Changed
- Use `BasicACL` field in container structure and `container.Put` request.
## [0.5.0] - 2020-04-01
- Initial release
[0.5.0]: https://github.com/nspcc-dev/neofs-api/releases/tag/v0.5.0
[0.6.0]: https://github.com/nspcc-dev/neofs-api/compare/v0.5.0...v0.6.0
[0.6.1]: https://github.com/nspcc-dev/neofs-api/compare/v0.6.0...v0.6.1
[0.7.0]: https://github.com/nspcc-dev/neofs-api/compare/v0.6.1...v0.7.0
[0.7.1]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.0...v0.7.1
[0.7.2]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.1...v0.7.2
[0.7.3]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.2...v0.7.3
[0.7.4]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.3...v0.7.4
[0.7.5]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.4...v0.7.5
[1.0.0]: https://github.com/nspcc-dev/neofs-api/compare/v0.7.5...v1.0.0
[1.1.0]: https://github.com/nspcc-dev/neofs-api/compare/v1.0.0...v1.1.0
[1.2.0]: https://github.com/nspcc-dev/neofs-api/compare/v1.1.0...v1.2.0
[2.0.0]: https://github.com/nspcc-dev/neofs-api/compare/v1.2.0...v2.0.0
[2.0.1]: https://github.com/nspcc-dev/neofs-api/compare/v2.0.0...v2.0.1
[2.0.2]: https://github.com/nspcc-dev/neofs-api/compare/v2.0.1...v2.0.2
[2.1.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.0.2...v2.1.0
[2.1.1]: https://github.com/nspcc-dev/neofs-api/compare/v2.1.0...v2.1.1
[2.2.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.1.1...v2.2.0
[2.2.1]: https://github.com/nspcc-dev/neofs-api/compare/v2.2.0...v2.2.1
[2.3.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.2.1...v2.3.0
[2.4.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.3.0...v2.4.0
[2.5.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.4.0...v2.5.0
[2.6.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.5.0...v2.6.0
[2.7.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.6.0...v2.7.0
[2.8.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.7.0...v2.8.0
[2.9.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.8.0...v2.9.0
[2.9.1]: https://github.com/nspcc-dev/neofs-api/compare/v2.9.0...v2.9.1
[2.10.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.9.1...v2.10.0
[2.11.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.10.0...v2.11.0
[2.12.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.11.0...v2.12.0
[2.13.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.12.0...v2.13.0
[2.13.1]: https://github.com/nspcc-dev/neofs-api/compare/v2.13.0...v2.13.1
[2.14.0]: https://github.com/nspcc-dev/neofs-api/compare/v2.13.1...v2.14.0

3
CODEOWNERS
View file

@ -1,3 +0,0 @@
.* @alexvanin @realloc @fyrchik @a.bogatyrev @TrueCloudLab/storage-sdk-developers
.forgejo/.* @potyarkin
Makefile @potyarkin

153
CONTRIBUTING.md
View file

@ -1,153 +0,0 @@
# Contribution guide
First, thank you for contributing! We love and encourage pull requests from
everyone. Please follow the guidelines:
- Check the open [issues](https://git.frostfs.info/TrueCloudLab/frostfs-api/issues) and
[pull requests](https://git.frostfs.info/TrueCloudLab/frostfs-api/pulls) for existing
discussions.
- Open an issue first, to discuss a new feature or enhancement.
- Open a pull request, and reference the relevant issue(s).
- Make sure your commits are logically separated and have good comments
explaining the details of your change.
- After receiving feedback, amend your commits or add new ones as
appropriate.
- **Have fun!**
## Development Workflow
Start by forking the `frostfs-api` repository, make changes in a branch and then
send a pull request. We encourage pull requests to discuss code changes. Here
are the steps in details:
### Set up your repository
Fork [FrostFS upstream](https://git.frostfs.info/TrueCloudLab/frostfs-api/fork) source
repository to your own personal repository. Copy the URL of your fork (you will
need it for the `git clone` command below).
```sh
$ git clone https://git.frostfs.info/TrueCloudLab/frostfs-api
```
### Set up git remote as ``upstream``
```sh
$ cd frostfs-api
$ git remote add upstream https://git.frostfs.info/TrueCloudLab/frostfs-api
$ git fetch upstream
$ git merge upstream/master
...
```
### Create your feature branch
Before making code changes, make sure you have created a separate branch for these
changes. Maybe you will find it convenient to name branch in the
`<type>/<Issue>-<changes_topic>` format.
```sh
$ git checkout -b feature/123-something_awesome
```
### Test your changes
After your code changes, make sure
- To add test cases for the new code.
- To run `make lint`
- To squash your commits into a single commit or a series of logically separated
commits run `git rebase -i`. It's okay to force update your pull request.
### Commit changes
After verification, commit your changes. This is a [great
post](https://chris.beams.io/posts/git-commit/) on how to write useful commit
messages. Try following this template:
```
[#Issue] <component> Summary
Description
<Macros>
<Sign-Off>
```
```sh
$ git commit -am '[#123] Add some feature'
```
### Push to the branch
Push your locally committed changes to the remote origin (your fork)
```
$ git push origin feature/123-something_awesome
```
### Create a Pull Request
Pull requests can be created via git.frostfs.info. Refer to [this
document](https://help.github.com/articles/creating-a-pull-request/) for
detailed steps on how to create a pull request. After a Pull Request gets peer
reviewed and approved, it will be merged.
## DCO Sign off
All authors to the project retain copyright to their work. However, to ensure
that they are only submitting work that they have rights to, we are requiring
everyone to acknowledge this by signing their work.
Any copyright notices in this repository should specify the authors as "the
contributors".
To sign your work, just add a line like this at the end of your commit message:
```
Signed-off-by: Samii Sakisaka <samii@ivunojikan.co.jp>
```
This can be done easily with the `--signoff` option to `git commit`.
By doing this, you state that you can certify the following (from [The Developer
Certificate of Origin](https://developercertificate.org/)):
```
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
1 Letterman Drive
Suite D4700
San Francisco, CA, 94129
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
```

30
CREDITS.md
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@ -1,30 +0,0 @@
# Credits
FrostFS continues the development of NeoFS.
Initial NeoFS research and development (2018-2020) was done by
[NeoSPCC](https://nspcc.ru) team.
In alphabetical order:
- Alexey Vanin
- Anastasia Prasolova
- Anatoly Bogatyrev
- Evgeny Kulikov
- Evgeny Stratonikov
- Leonard Liubich
- Sergei Liubich
- Stanislav Bogatyrev
# Contributors
In chronological order:
- Pavel Korotkov
- Pavel Karpy
# Special Thanks
For product development support:
- Fabian Wahle
- Neo Global Development

201
LICENSE
View file

@ -1,201 +0,0 @@
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35
Makefile
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@ -1,35 +0,0 @@
#!/usr/bin/make -f
SHELL=bash
include help.mk
.PHONY: doc fmt pre-commit unpre-commit pre-commit-run
# Regenerate documentation for proto files:
doc:
@for f in `find . -type f -name '*.proto' -exec dirname {} \; | sort -u `; do \
echo "⇒ Documentation for $$(basename $$f)"; \
protoc \
--doc_opt=.forgejo/markdown.tmpl,$${f}.md \
--proto_path=.:/usr/local/include \
--doc_out=proto-docs/ $${f}/*.proto; \
done
# Run clang-format
fmt:
@for f in `ls **/*.proto`; do \
echo "⇒ Formatting $$f"; \
clang-format -i $$f; \
done
# 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

37
README.md
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@ -1,36 +1,3 @@
<p align="center"> # WIP area: this repo is just a fork!
<img src="./.forgejo/logo.svg" width="500px" alt="FrostFS">
</p>
<p align="center">
<a href="https://frostfs.info">FrostFS</a> API language-agnostic protocol definitions
</p>
--- Useful things may be published only in [other branches](../../../branches)
![Release](https://git.frostfs.info/TrueCloudLab/frostfs-api/badges/release.svg)
## Overview
FrostFS-API repository is the basis for language-specific libraries, e.g.:
- [frostfs-api-go](https://git.frostfs.info/TrueCloudLab/frostfs-api-go)
Those libraries contain compiled protocol buffers definitions, wrapped with
language-specific code. Use them to integrate applications with FrostFS.
This repository contains:
- protocol buffers packages
- [auto-generated docs](proto-docs) for protocol buffers
## Contributing
Feel free to contribute to this project after reading the [contributing
guidelines](CONTRIBUTING.md).
Before you start working on a certain topic, first create a new issue
describing the feature/topic you are going to implement.
## License
This project is licensed under the Apache 2.0 License -
see the [LICENSE](LICENSE) file for details

71
accounting/service.proto
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@ -1,71 +0,0 @@
edition = "2023";
package neo.fs.v2.accounting;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/accounting/grpc;accounting";
option csharp_namespace = "Neo.FileStorage.API.Accounting";
import "accounting/types.proto";
import "refs/types.proto";
import "session/types.proto";
// Accounting service provides methods for interaction with FrostFS sidechain
// via other FrostFS nodes to get information about the account balance. Deposit
// and Withdraw operations can't be implemented here, as they require Mainnet
// FrostFS smart contract invocation. Transfer operations between internal
// FrostFS accounts are possible if both use the same token type.
service AccountingService {
// Returns the amount of funds in GAS token for the requested FrostFS account.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS):
// balance has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON).
rpc Balance(BalanceRequest) returns (BalanceResponse);
}
// BalanceRequest message
message BalanceRequest {
// To indicate the account for which the balance is requested, its identifier
// is used. It can be any existing account in FrostFS sidechain `Balance`
// smart contract. If omitted, client implementation MUST set it to the
// request's signer `OwnerID`.
message Body {
// Valid user identifier in `OwnerID` format for which the balance is
// requested. Required field.
neo.fs.v2.refs.OwnerID owner_id = 1;
}
// Body of the balance request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// BalanceResponse message
message BalanceResponse {
// The amount of funds in GAS token for the `OwnerID`'s account requested.
// Balance is given in the `Decimal` format to avoid precision issues with
// rounding.
message Body {
// Amount of funds in GAS token for the requested account.
Decimal balance = 1;
}
// Body of the balance response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

22
accounting/types.proto
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@ -1,22 +0,0 @@
edition = "2023";
package neo.fs.v2.accounting;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/accounting/grpc;accounting";
option csharp_namespace = "Neo.FileStorage.API.Accounting";
// Standard floating point data type can't be used in FrostFS due to inexactness
// of the result when doing lots of small number operations. To solve the lost
// precision issue, special `Decimal` format is used for monetary computations.
//
// Please see [The General Decimal Arithmetic
// Specification](http://speleotrove.com/decimal/) for detailed problem
// description.
message Decimal {
// Number in the smallest Token fractions.
int64 value = 1 [ json_name = "value" ];
// Precision value indicating how many smallest fractions can be in one
// integer.
uint32 precision = 2 [ json_name = "precision" ];
}

249
acl/types.proto
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@ -1,249 +0,0 @@
edition = "2023";
package neo.fs.v2.acl;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/acl/grpc;acl";
option csharp_namespace = "Neo.FileStorage.API.Acl";
import "refs/types.proto";
import "ape/types.proto";
// Target role of the access control rule in access control list.
enum Role {
// Unspecified role, default value
ROLE_UNSPECIFIED = 0;
// User target rule is applied if sender is the owner of the container
USER = 1;
// System target rule is applied if sender is a storage node within the
// container or an inner ring node
SYSTEM = 2;
// Others target rule is applied if sender is neither a user nor a system
// target
OTHERS = 3;
}
// MatchType is an enumeration of match types.
enum MatchType {
// Unspecified match type, default value.
MATCH_TYPE_UNSPECIFIED = 0;
// Return true if strings are equal
STRING_EQUAL = 1;
// Return true if strings are different
STRING_NOT_EQUAL = 2;
}
// Request's operation type to match if the rule is applicable to a particular
// request.
enum Operation {
// Unspecified operation, default value
OPERATION_UNSPECIFIED = 0;
// Get
GET = 1;
// Head
HEAD = 2;
// Put
PUT = 3;
// Delete
DELETE = 4;
// Search
SEARCH = 5;
// GetRange
GETRANGE = 6;
// GetRangeHash
GETRANGEHASH = 7;
}
// Rule execution result action. Either allows or denies access if the rule's
// filters match.
enum Action {
// Unspecified action, default value
ACTION_UNSPECIFIED = 0;
// Allow action
ALLOW = 1;
// Deny action
DENY = 2;
}
// Enumeration of possible sources of Headers to apply filters.
enum HeaderType {
// Unspecified header, default value.
HEADER_UNSPECIFIED = 0;
// Filter request headers
REQUEST = 1;
// Filter object headers
OBJECT = 2;
// Filter service headers. These are not processed by FrostFS nodes and
// exist for service use only.
SERVICE = 3;
}
// Describes a single eACL rule.
message EACLRecord {
// FrostFS request Verb to match
Operation operation = 1 [ json_name = "operation" ];
// Rule execution result. Either allows or denies access if filters match.
Action action = 2 [ json_name = "action" ];
// Filter to check particular properties of the request or the object.
//
// By default `key` field refers to the corresponding object's `Attribute`.
// Some Object's header fields can also be accessed by adding `$Object:`
// prefix to the name. Here is the list of fields available via this prefix:
//
// * $Object:version \
// version
// * $Object:objectID \
// object_id
// * $Object:containerID \
// container_id
// * $Object:ownerID \
// owner_id
// * $Object:creationEpoch \
// creation_epoch
// * $Object:payloadLength \
// payload_length
// * $Object:payloadHash \
// payload_hash
// * $Object:objectType \
// object_type
// * $Object:homomorphicHash \
// homomorphic_hash
//
// Please note, that if request or response does not have object's headers of
// full object (Range, RangeHash, Search, Delete), it will not be possible to
// filter by object header fields or user attributes. From the well-known list
// only `$Object:objectID` and `$Object:containerID` will be available, as
// it's possible to take that information from the requested address.
message Filter {
// Define if Object or Request header will be used
HeaderType header_type = 1 [ json_name = "headerType" ];
// Match operation type
MatchType match_type = 2 [ json_name = "matchType" ];
// Name of the Header to use
string key = 3 [ json_name = "key" ];
// Expected Header Value or pattern to match
string value = 4 [ json_name = "value" ];
}
// List of filters to match and see if rule is applicable
repeated Filter filters = 3 [ json_name = "filters" ];
// Target to apply ACL rule. Can be a subject's role class or a list of public
// keys to match.
message Target {
// Target subject's role class
Role role = 1 [ json_name = "role" ];
// List of public keys to identify target subject
repeated bytes keys = 2 [ json_name = "keys" ];
}
// List of target subjects to apply ACL rule to
repeated Target targets = 4 [ json_name = "targets" ];
}
// Extended ACL rules table. A list of ACL rules defined additionally to Basic
// ACL. Extended ACL rules can be attached to a container and can be updated
// or may be defined in `BearerToken` structure. Please see the corresponding
// FrostFS Technical Specification section for detailed description.
message EACLTable {
// eACL format version. Effectively, the version of API library used to create
// eACL Table.
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Identifier of the container that should use given access control rules
neo.fs.v2.refs.ContainerID container_id = 2 [ json_name = "containerID" ];
// List of Extended ACL rules
repeated EACLRecord records = 3 [ json_name = "records" ];
}
// BearerToken allows to attach signed Extended ACL rules to the request in
// `RequestMetaHeader`. If container's Basic ACL rules allow, the attached rule
// set will be checked instead of one attached to the container itself. Just
// like [JWT](https://jwt.io), it has a limited lifetime and scope, hence can be
// used in the similar use cases, like providing authorisation to externally
// authenticated party.
//
// BearerToken can be issued only by the container's owner and must be signed
// using the key associated with the container's `OwnerID`.
message BearerToken {
// Bearer Token body structure contains Extended ACL table issued by the
// container owner with additional information preventing token abuse.
message Body {
// Table of Extended ACL rules to use instead of the ones attached to the
// container. If it contains `container_id` field, bearer token is only
// valid for this specific container. Otherwise, any container of the same
// owner is allowed.
//
// Deprecated: eACL tables are no longer relevant - `APEOverrides` should be
// used instead.
EACLTable eacl_table = 1 [ json_name = "eaclTable" ];
// `OwnerID` defines to whom the token was issued. It must match the request
// originator's `OwnerID`. If empty, any token bearer will be accepted.
neo.fs.v2.refs.OwnerID owner_id = 2 [ json_name = "ownerID" ];
// Lifetime parameters of the token. Field names taken from
// [rfc7519](https://tools.ietf.org/html/rfc7519).
message TokenLifetime {
// Expiration Epoch
uint64 exp = 1 [ json_name = "exp" ];
// Not valid before Epoch
uint64 nbf = 2 [ json_name = "nbf" ];
// Issued at Epoch
uint64 iat = 3 [ json_name = "iat" ];
}
// Token expiration and valid time period parameters
TokenLifetime lifetime = 3 [ json_name = "lifetime" ];
// AllowImpersonate flag to consider token signer as request owner.
// If this field is true extended ACL table in token body isn't processed.
bool allow_impersonate = 4 [ json_name = "allowImpersonate" ];
// APEOverride is the list of APE chains defined for a target.
// These chains are meant to serve as overrides to the already defined (or
// even undefined) APE chains for the target (see contract `Policy`).
//
// The server-side processing of the bearer token with set APE overrides
// must verify if a client is permitted to override chains for the target,
// preventing unauthorized access through the APE mechanism.
message APEOverride {
// Target for which chains are applied.
frostfs.v2.ape.ChainTarget target = 1 [ json_name = "target" ];
// The list of APE chains.
repeated frostfs.v2.ape.Chain chains = 2 [ json_name = "chains" ];
}
// APE override for the target.
APEOverride ape_override = 5 [ json_name = "apeOverride" ];
}
// Bearer Token body
Body body = 1 [ json_name = "body" ];
// Signature of BearerToken body
neo.fs.v2.refs.Signature signature = 2 [ json_name = "signature" ];
}

33
ape/types.proto
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@ -1,33 +0,0 @@
edition = "2023";
package frostfs.v2.ape;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/ape/grpc;ape";
// TargetType is a type target to which a rule chain is defined.
enum TargetType {
UNDEFINED = 0;
NAMESPACE = 1;
CONTAINER = 2;
USER = 3;
GROUP = 4;
}
// ChainTarget is an object to which a rule chain is defined.
message ChainTarget {
TargetType type = 1;
string name = 2;
}
// Chain is a chain of rules defined for a specific target.
message Chain {
oneof kind {
// Raw representation of a serizalized rule chain.
bytes raw = 1;
}
}

171
apemanager/service.proto
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@ -1,171 +0,0 @@
edition = "2023";
package frostfs.v2.apemanager;
import "ape/types.proto";
import "session/types.proto";
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/apemanager/grpc;apemanager";
// `APEManagerService` provides API to manage rule chains within sidechain's
// `Policy` smart contract.
service APEManagerService {
// Add a rule chain for a specific target to `Policy` smart contract.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// the chain has been successfully added;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// container (as target) not found;
// - **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
// the operation is denied by the service.
rpc AddChain(AddChainRequest) returns (AddChainResponse);
// Remove a rule chain for a specific target from `Policy` smart contract.
// RemoveChain is an idempotent operation: removal of non-existing rule chain
// also means success.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// the chain has been successfully removed;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// container (as target) not found;
// - **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
// the operation is denied by the service.
rpc RemoveChain(RemoveChainRequest) returns (RemoveChainResponse);
// List chains defined for a specific target from `Policy` smart contract.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// chains have been successfully listed;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// container (as target) not found;
// - **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
// the operation is denied by the service.
rpc ListChains(ListChainsRequest) returns (ListChainsResponse);
}
message AddChainRequest {
message Body {
// A target for which a rule chain is added.
frostfs.v2.ape.ChainTarget target = 1;
// The chain to set for the target.
frostfs.v2.ape.Chain chain = 2;
}
// The request's body.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
message AddChainResponse {
message Body {
// Chain ID assigned for the added rule chain.
// If chain ID is left empty in the request, then
// it will be generated.
bytes chain_id = 1;
}
// The response's body.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
message RemoveChainRequest {
message Body {
// Target for which a rule chain is removed.
frostfs.v2.ape.ChainTarget target = 1;
// Chain ID assigned for the rule chain.
bytes chain_id = 2;
}
// The request's body.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
message RemoveChainResponse {
// Since RemoveChain is an idempotent operation, then the only indicator that
// operation could not be performed is an error returning to a client.
message Body {}
// The response's body.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
message ListChainsRequest {
message Body {
// Target for which rule chains are listed.
frostfs.v2.ape.ChainTarget target = 1;
}
// The request's body.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
message ListChainsResponse {
message Body {
// The list of chains defined for the reqeusted target.
repeated frostfs.v2.ape.Chain chains = 1;
}
// The response's body.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

299
container/service.proto
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@ -1,299 +0,0 @@
edition = "2023";
package neo.fs.v2.container;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container/grpc;container";
option csharp_namespace = "Neo.FileStorage.API.Container";
import "container/types.proto";
import "refs/types.proto";
import "session/types.proto";
// `ContainerService` provides API to interact with `Container` smart contract
// in FrostFS sidechain via other FrostFS nodes. All of those actions can be
// done equivalently by directly issuing transactions and RPC calls to sidechain
// nodes.
service ContainerService {
// `Put` invokes `Container` smart contract's `Put` method and returns
// response immediately. After a new block is issued in sidechain, request is
// verified by Inner Ring nodes. After one more block in sidechain, the
// container is added into smart contract storage.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// request to save the container has been sent to the sidechain;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// container create access denied.
rpc Put(PutRequest) returns (PutResponse);
// `Delete` invokes `Container` smart contract's `Delete` method and returns
// response immediately. After a new block is issued in sidechain, request is
// verified by Inner Ring nodes. After one more block in sidechain, the
// container is added into smart contract storage.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// request to remove the container has been sent to the sidechain;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// container delete access denied.
rpc Delete(DeleteRequest) returns (DeleteResponse);
// Returns container structure from `Container` smart contract storage.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// container has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// requested container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied.
rpc Get(GetRequest) returns (GetResponse);
// Returns all owner's containers from `Container` smart contract storage.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// container list has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// container list access denied.
rpc List(ListRequest) returns (ListResponse);
// Returns all owner's containers from `Container` smart contract storage
// via stream.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// container list has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// container list access denied.
rpc ListStream(ListStreamRequest) returns (stream ListStreamResponse);
}
// New FrostFS Container creation request
message PutRequest {
// Container creation request has container structure's signature as a
// separate field. It's not stored in sidechain, just verified on container
// creation by `Container` smart contract. `ContainerID` is a SHA256 hash of
// the stable-marshalled container strucutre, hence there is no need for
// additional signature checks.
message Body {
// Container structure to register in FrostFS
container.Container container = 1;
// Signature of a stable-marshalled container according to RFC-6979.
neo.fs.v2.refs.SignatureRFC6979 signature = 2;
}
// Body of container put request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// New FrostFS Container creation response
message PutResponse {
// Container put response body contains information about the newly registered
// container as seen by `Container` smart contract. `ContainerID` can be
// calculated beforehand from the container structure and compared to the one
// returned here to make sure everything has been done as expected.
message Body {
// Unique identifier of the newly created container
neo.fs.v2.refs.ContainerID container_id = 1;
}
// Body of container put response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Container removal request
message DeleteRequest {
// Container removal request body has signed `ContainerID` as a proof of
// the container owner's intent. The signature will be verified by `Container`
// smart contract, so signing algorithm must be supported by NeoVM.
message Body {
// Identifier of the container to delete from FrostFS
neo.fs.v2.refs.ContainerID container_id = 1;
// `ContainerID` signed with the container owner's key according to
// RFC-6979.
neo.fs.v2.refs.SignatureRFC6979 signature = 2;
}
// Body of container delete request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// `DeleteResponse` has an empty body because delete operation is asynchronous
// and done via consensus in Inner Ring nodes.
message DeleteResponse {
// `DeleteResponse` has an empty body because delete operation is asynchronous
// and done via consensus in Inner Ring nodes.
message Body {}
// Body of container delete response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Get container structure
message GetRequest {
// Get container structure request body.
message Body {
// Identifier of the container to get
neo.fs.v2.refs.ContainerID container_id = 1;
}
// Body of container get request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Get container structure
message GetResponse {
// Get container response body does not have container structure signature. It
// has been already verified upon container creation.
message Body {
// Requested container structure
Container container = 1;
// Signature of a stable-marshalled container according to RFC-6979.
neo.fs.v2.refs.SignatureRFC6979 signature = 2;
// Session token if the container has been created within the session
neo.fs.v2.session.SessionToken session_token = 3;
}
// Body of container get response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// List containers
message ListRequest {
// List containers request body.
message Body {
// Identifier of the container owner
neo.fs.v2.refs.OwnerID owner_id = 1;
}
// Body of list containers request message
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// List containers
message ListResponse {
// List containers response body.
message Body {
// List of `ContainerID`s belonging to the requested `OwnerID`
repeated refs.ContainerID container_ids = 1;
}
// Body of list containers response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// List containers stream
message ListStreamRequest {
// List containers stream request body.
message Body {
// Identifier of the container owner.
neo.fs.v2.refs.OwnerID owner_id = 1;
}
// Body of list containers stream request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// List containers stream
message ListStreamResponse {
// List containers stream response body.
message Body {
// List of `ContainerID`s belonging to the requested `OwnerID`
repeated refs.ContainerID container_ids = 1;
}
// Body of list containers stream response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

76
container/types.proto
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edition = "2023";
package neo.fs.v2.container;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container/grpc;container";
option csharp_namespace = "Neo.FileStorage.API.Container";
import "netmap/types.proto";
import "refs/types.proto";
// Container is a structure that defines object placement behaviour. Objects can
// be stored only within containers. They define placement rule, attributes and
// access control information. An ID of a container is a 32 byte long SHA256
// hash of stable-marshalled container message.
message Container {
// Container format version. Effectively, the version of API library used to
// create the container.
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Identifier of the container owner
neo.fs.v2.refs.OwnerID owner_id = 2 [ json_name = "ownerID" ];
// Nonce is a 16 byte UUIDv4, used to avoid collisions of `ContainerID`s
bytes nonce = 3 [ json_name = "nonce" ];
// `BasicACL` contains access control rules for the owner, system and others
// groups, as well as permission bits for `BearerToken` and `Extended ACL`
uint32 basic_acl = 4 [ json_name = "basicACL" ];
// `Attribute` is a user-defined Key-Value metadata pair attached to the
// container. Container attributes are immutable. They are set at the moment
// of container creation and can never be added or updated.
//
// Key name must be a container-unique valid UTF-8 string. Value can't be
// empty. Containers with duplicated attribute names or attributes with empty
// values will be considered invalid.
//
// There are some "well-known" attributes affecting system behaviour:
//
// * [ __SYSTEM__NAME ] \
// (`__NEOFS__NAME` is deprecated) \
// String of a human-friendly container name registered as a domain in
// NNS contract.
// * [ __SYSTEM__ZONE ] \
// (`__NEOFS__ZONE` is deprecated) \
// String of a zone for `__SYSTEM__NAME` (`__NEOFS__NAME` is deprecated).
// Used as a TLD of a domain name in NNS contract. If no zone is specified,
// use default zone: `container`.
// * [ __SYSTEM__DISABLE_HOMOMORPHIC_HASHING ] \
// (`__NEOFS__DISABLE_HOMOMORPHIC_HASHING` is deprecated) \
// Disables homomorphic hashing for the container if the value equals "true"
// string. Any other values are interpreted as missing attribute. Container
// could be accepted in a FrostFS network only if the global network hashing
// configuration value corresponds with that attribute's value. After
// container inclusion, network setting is ignored.
//
// And some well-known attributes used by applications only:
//
// * Name \
// Human-friendly name
// * Timestamp \
// User-defined local time of container creation in Unix Timestamp format
message Attribute {
// Attribute name key
string key = 1 [ json_name = "key" ];
// Attribute value
string value = 2 [ json_name = "value" ];
}
// Attributes represent immutable container's meta data
repeated Attribute attributes = 5 [ json_name = "attributes" ];
// Placement policy for the object inside the container
neo.fs.v2.netmap.PlacementPolicy placement_policy = 6
[ json_name = "placementPolicy" ];
}

62
doc/release_instructions.md
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@ -1,62 +0,0 @@
# Release instructions
This documents outlines the frostfs-api release process and can be used as a TODO
list for a new release.
## Pre-release checks
This should run successfully:
* `make lint`
## Pre-release actions
This must be run:
* `make doc`
## Writing CHANGELOG
Add an entry to the CHANGELOG.md following the style established there.
Add a codename for releases with the new major version, version and release date in
the heading. Write a paragraph describing the most significant changes done in
this release. Then add sections with what has been added, changed and removed,
describing each change briefly with a reference to issues, where
available.
## Release commit
Release commit summary should follow the template:
`Release v<Version> - <Codename island> (<Hangeul>, <Hanja>)`, e.g.:
```
Release v2.9.0 - Anmyeondo (안면도, 安眠島)
```
## Tag the release
Use `vX.Y.Z` tag following the semantic versioning standard. For pre-release
versions use `vX.Y.Z-rc.N` scheme.
## Push changes and release tag to repository
This step should bypass the default PR mechanism to get a correct result (so
that releasing requires admin privileges for the project), both the `master`
branch update and tag must be pushed simultaneously like this:
```
$ git push origin master v2.7.0
```
## Make a proper release
Edit an automatically-created release on git.frostfs.info
Release title has to follow `<version> <Romanized codename> (<Hangeul, Hanja
codename> )` scheme for major releases and just `<version>` for regular point
releases.
## Post-release actions
* Close corresponding X.Y.Z milestone
* Make announcements in Matrix and Discord channels

11
help.mk
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.PHONY: help
# Show this help prompt
help:
@echo ' Usage:'
@echo ''
@echo ' make <target>'
@echo ''
@echo ' Targets:'
@echo ''
@awk '/^#/{ comment = substr($$0,3) } /^[a-zA-Z][a-zA-Z0-9_-]+:/{ print " ", $$1, comment; comment = "" }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort | uniq

19
lock/types.proto
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edition = "2023";
package neo.fs.v2.lock;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/lock/grpc;lock";
option csharp_namespace = "Neo.FileStorage.API.Lock";
import "refs/types.proto";
// Lock objects protects a list of objects from being deleted. The lifetime of a
// lock object is limited similar to regular objects in
// `__SYSTEM__EXPIRATION_EPOCH` (`__NEOFS__EXPIRATION_EPOCH` is deprecated)
// attribute. Lock object MUST have expiration epoch. It is impossible to delete
// a lock object via ObjectService.Delete RPC call.
message Lock {
// List of objects to lock. Must not be empty or carry empty IDs.
// All members must be of the `REGULAR` type.
repeated neo.fs.v2.refs.ObjectID members = 1 [ json_name = "members" ];
}

162
netmap/service.proto
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edition = "2023";
package neo.fs.v2.netmap;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap/grpc;netmap";
option csharp_namespace = "Neo.FileStorage.API.Netmap";
import "netmap/types.proto";
import "refs/types.proto";
import "session/types.proto";
// `NetmapService` provides methods to work with `Network Map` and the
// information required to build it. The resulting `Network Map` is stored in
// sidechain `Netmap` smart contract, while related information can be obtained
// from other FrostFS nodes.
service NetmapService {
// Get NodeInfo structure from the particular node directly.
// Node information can be taken from `Netmap` smart contract. In some cases,
// though, one may want to get recent information directly or to talk to the
// node not yet present in the `Network Map` to find out what API version can
// be used for further communication. This can be also used to check if a node
// is up and running.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS):
// information about the server has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON).
rpc LocalNodeInfo(LocalNodeInfoRequest) returns (LocalNodeInfoResponse);
// Read recent information about the FrostFS network.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS):
// information about the current network state has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON).
rpc NetworkInfo(NetworkInfoRequest) returns (NetworkInfoResponse);
// Returns network map snapshot of the current FrostFS epoch.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS):
// information about the current network map has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON).
rpc NetmapSnapshot(NetmapSnapshotRequest) returns (NetmapSnapshotResponse);
}
// Get NodeInfo structure directly from a particular node
message LocalNodeInfoRequest {
// LocalNodeInfo request body is empty.
message Body {}
// Body of the LocalNodeInfo request message
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Local Node Info, including API Version in use
message LocalNodeInfoResponse {
// Local Node Info, including API Version in use.
message Body {
// Latest FrostFS API version in use
neo.fs.v2.refs.Version version = 1;
// NodeInfo structure with recent information from node itself
NodeInfo node_info = 2;
}
// Body of the balance response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect response execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Get NetworkInfo structure with the network view from a particular node.
message NetworkInfoRequest {
// NetworkInfo request body is empty.
message Body {}
// Body of the NetworkInfo request message
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Response with NetworkInfo structure including current epoch and
// sidechain magic number.
message NetworkInfoResponse {
// Information about the network.
message Body {
// NetworkInfo structure with recent information.
NetworkInfo network_info = 1;
}
// Body of the NetworkInfo response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect response execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Get netmap snapshot request
message NetmapSnapshotRequest {
// Get netmap snapshot request body.
message Body {}
// Body of get netmap snapshot request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Response with current netmap snapshot
message NetmapSnapshotResponse {
// Get netmap snapshot response body
message Body {
// Structure of the requested network map.
Netmap netmap = 1 [ json_name = "netmap" ];
}
// Body of get netmap snapshot response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect response execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

357
netmap/types.proto
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edition = "2023";
package neo.fs.v2.netmap;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/netmap/grpc;netmap";
option csharp_namespace = "Neo.FileStorage.API.Netmap";
// Operations on filters
enum Operation {
// No Operation defined
OPERATION_UNSPECIFIED = 0;
// Equal
EQ = 1;
// Not Equal
NE = 2;
// Greater then
GT = 3;
// Greater or equal
GE = 4;
// Less then
LT = 5;
// Less or equal
LE = 6;
// Logical OR
OR = 7;
// Logical AND
AND = 8;
// Logical negation
NOT = 9;
// Matches pattern
LIKE = 10;
}
// Selector modifier shows how the node set will be formed. By default selector
// just groups nodes into a bucket by attribute, selecting nodes only by their
// hash distance.
enum Clause {
// No modifier defined. Nodes will be selected from the bucket randomly
CLAUSE_UNSPECIFIED = 0;
// SAME will select only nodes having the same value of bucket attribute
SAME = 1;
// DISTINCT will select nodes having different values of bucket attribute
DISTINCT = 2;
}
// This filter will return the subset of nodes from `NetworkMap` or another
// filter's results that will satisfy filter's conditions.
message Filter {
// Name of the filter or a reference to a named filter. '*' means
// application to the whole unfiltered NetworkMap. At top level it's used as a
// filter name. At lower levels it's considered to be a reference to another
// named filter
string name = 1 [ json_name = "name" ];
// Key to filter
string key = 2 [ json_name = "key" ];
// Filtering operation
Operation op = 3 [ json_name = "op" ];
// Value to match
string value = 4 [ json_name = "value" ];
// List of inner filters. Top level operation will be applied to the whole
// list.
repeated Filter filters = 5 [ json_name = "filters" ];
}
// Selector chooses a number of nodes from the bucket taking the nearest nodes
// to the provided `ContainerID` by hash distance.
message Selector {
// Selector name to reference in object placement section
string name = 1 [ json_name = "name" ];
// How many nodes to select from the bucket
uint32 count = 2 [ json_name = "count" ];
// Selector modifier showing how to form a bucket
Clause clause = 3 [ json_name = "clause" ];
// Bucket attribute to select from
string attribute = 4 [ json_name = "attribute" ];
// Filter reference to select from
string filter = 5 [ json_name = "filter" ];
}
// Number of object replicas in a set of nodes from the defined selector. If no
// selector set, the root bucket containing all possible nodes will be used by
// default.
message Replica {
// How many object replicas to put
uint32 count = 1 [ json_name = "count" ];
// Named selector bucket to put replicas
string selector = 2 [ json_name = "selector" ];
// Data shards count
uint32 ec_data_count = 3 [ json_name = "ecDataCount" ];
// Parity shards count
uint32 ec_parity_count = 4 [ json_name = "ecParityCount" ];
}
// Set of rules to select a subset of nodes from `NetworkMap` able to store
// container's objects. The format is simple enough to transpile from different
// storage policy definition languages.
message PlacementPolicy {
// Rules to set number of object replicas and place each one into a named
// bucket
repeated Replica replicas = 1 [ json_name = "replicas" ];
// Container backup factor controls how deep FrostFS will search for nodes
// alternatives to include into container's nodes subset
uint32 container_backup_factor = 2 [ json_name = "containerBackupFactor" ];
// Set of Selectors to form the container's nodes subset
repeated Selector selectors = 3 [ json_name = "selectors" ];
// List of named filters to reference in selectors
repeated Filter filters = 4 [ json_name = "filters" ];
// Unique flag defines non-overlapping application for replicas
bool unique = 5 [ json_name = "unique" ];
}
// FrostFS node description
message NodeInfo {
// Public key of the FrostFS node in a binary format
bytes public_key = 1 [ json_name = "publicKey" ];
// Ways to connect to a node
repeated string addresses = 2 [ json_name = "addresses" ];
// Administrator-defined Attributes of the FrostFS Storage Node.
//
// `Attribute` is a Key-Value metadata pair. Key name must be a valid UTF-8
// string. Value can't be empty.
//
// Attributes can be constructed into a chain of attributes: any attribute can
// have a parent attribute and a child attribute (except the first and the
// last one). A string representation of the chain of attributes in FrostFS
// Storage Node configuration uses ":" and "/" symbols, e.g.:
//
// `FrostFS_NODE_ATTRIBUTE_1=key1:val1/key2:val2`
//
// Therefore the string attribute representation in the Node configuration
// must use "\:", "\/" and "\\" escaped symbols if any of them appears in an
// attribute's key or value.
//
// Node's attributes are mostly used during Storage Policy evaluation to
// calculate object's placement and find a set of nodes satisfying policy
// requirements. There are some "well-known" node attributes common to all the
// Storage Nodes in the network and used implicitly with default values if not
// explicitly set:
//
// * Capacity \
// Total available disk space in Gigabytes.
// * Price \
// Price in GAS tokens for storing one GB of data during one Epoch. In node
// attributes it's a string presenting floating point number with comma or
// point delimiter for decimal part. In the Network Map it will be saved as
// 64-bit unsigned integer representing number of minimal token fractions.
// * UN-LOCODE \
// Node's geographic location in
// [UN/LOCODE](https://www.unece.org/cefact/codesfortrade/codes_index.html)
// format approximated to the nearest point defined in the standard.
// * CountryCode \
// Country code in
// [ISO 3166-1_alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)
// format. Calculated automatically from `UN-LOCODE` attribute.
// * Country \
// Country short name in English, as defined in
// [ISO-3166](https://www.iso.org/obp/ui/#search). Calculated automatically
// from `UN-LOCODE` attribute.
// * Location \
// Place names are given, whenever possible, in their national language
// versions as expressed in the Roman alphabet using the 26 characters of
// the character set adopted for international trade data interchange,
// written without diacritics . Calculated automatically from `UN-LOCODE`
// attribute.
// * SubDivCode \
// Country's administrative subdivision where node is located. Calculated
// automatically from `UN-LOCODE` attribute based on `SubDiv` field.
// Presented in [ISO 3166-2](https://en.wikipedia.org/wiki/ISO_3166-2)
// format.
// * SubDiv \
// Country's administrative subdivision name, as defined in
// [ISO 3166-2](https://en.wikipedia.org/wiki/ISO_3166-2). Calculated
// automatically from `UN-LOCODE` attribute.
// * Continent \
// Node's continent name according to the [Seven-Continent
// model](https://en.wikipedia.org/wiki/Continent#Number). Calculated
// automatically from `UN-LOCODE` attribute.
// * ExternalAddr
// Node's preferred way for communications with external clients.
// Clients SHOULD use these addresses if possible.
// Must contain a comma-separated list of multi-addresses.
//
// For detailed description of each well-known attribute please see the
// corresponding section in FrostFS Technical Specification.
message Attribute {
// Key of the node attribute
string key = 1 [ json_name = "key" ];
// Value of the node attribute
string value = 2 [ json_name = "value" ];
// Parent keys, if any. For example for `City` it could be `Region` and
// `Country`.
repeated string parents = 3 [ json_name = "parents" ];
}
// Carries list of the FrostFS node attributes in a key-value form. Key name
// must be a node-unique valid UTF-8 string. Value can't be empty. NodeInfo
// structures with duplicated attribute names or attributes with empty values
// will be considered invalid.
repeated Attribute attributes = 3 [ json_name = "attributes" ];
// Represents the enumeration of various states of the FrostFS node.
enum State {
// Unknown state
UNSPECIFIED = 0;
// Active state in the network
ONLINE = 1;
// Network unavailable state
OFFLINE = 2;
// Maintenance state
MAINTENANCE = 3;
}
// Carries state of the FrostFS node
State state = 4 [ json_name = "state" ];
}
// Network map structure
message Netmap {
// Network map revision number.
uint64 epoch = 1 [ json_name = "epoch" ];
// Nodes presented in network.
repeated NodeInfo nodes = 2 [ json_name = "nodes" ];
}
// FrostFS network configuration
message NetworkConfig {
// Single configuration parameter. Key MUST be network-unique.
//
// System parameters:
// - **AuditFee** \
// Fee paid by the storage group owner to the Inner Ring member.
// Value: little-endian integer. Default: 0.
// - **BasicIncomeRate** \
// Cost of storing one gigabyte of data for a period of one epoch. Paid by
// container owner to container nodes.
// Value: little-endian integer. Default: 0.
// - **ContainerAliasFee** \
// Fee paid for named container's creation by the container owner.
// Value: little-endian integer. Default: 0.
// - **ContainerFee** \
// Fee paid for container creation by the container owner.
// Value: little-endian integer. Default: 0.
// - **EpochDuration** \
// FrostFS epoch duration measured in Sidechain blocks.
// Value: little-endian integer. Default: 0.
// - **HomomorphicHashingDisabled** \
// Flag of disabling the homomorphic hashing of objects' payload.
// Value: true if any byte != 0. Default: false.
// - **InnerRingCandidateFee** \
// Fee for entrance to the Inner Ring paid by the candidate.
// Value: little-endian integer. Default: 0.
// - **MaintenanceModeAllowed** \
// Flag allowing setting the MAINTENANCE state to storage nodes.
// Value: true if any byte != 0. Default: false.
// - **MaxObjectSize** \
// Maximum size of physically stored FrostFS object measured in bytes.
// Value: little-endian integer. Default: 0.
//
// This value refers to the maximum size of a **physically** stored object
// in FrostFS. However, from a user's perspective, the **logical** size of a
// stored object can be significantly larger. The relationship between the
// physical and logical object sizes is governed by the following formula
//
// ```math
// \mathrm{Stored\ Object\ Size} \le
// \frac{
// \left(\mathrm{Max\ Object\ Size}\right)^2
// }{
// \mathrm{Object\ ID\ Size}
// }
// ```
//
// This arises from the fact that a tombstone, also being an object, stores
// the IDs of inhumed objects and cannot be divided into smaller objects,
// thus having an upper limit for its size.
//
// For example, if:
// * Max Object Size Size = 64 MiB;
// * Object ID Size = 32 B;
//
// then:
// ```math
// \mathrm{Stored\ Object\ Size} \le
// \frac{\left(64\ \mathrm{MiB}\right)^2}{32\ \mathrm{B}} =
// \frac{2^{52}}{2^5}\ \mathrm{B} =
// 2^{47}\ \mathrm{B} =
// 128\ \mathrm{TiB}
// ```
// - **WithdrawFee** \
// Fee paid for withdrawal of funds paid by the account owner.
// Value: little-endian integer. Default: 0.
// - **MaxECDataCount** \
// Maximum number of data shards for EC placement policy.
// Value: little-endian integer. Default: 0.
// - **MaxECParityCount** \
// Maximum number of parity shards for EC placement policy.
// Value: little-endian integer. Default: 0.
message Parameter {
// Parameter key. UTF-8 encoded string
bytes key = 1 [ json_name = "key" ];
// Parameter value
bytes value = 2 [ json_name = "value" ];
}
// List of parameter values
repeated Parameter parameters = 1 [ json_name = "parameters" ];
}
// Information about FrostFS network
message NetworkInfo {
// Number of the current epoch in the FrostFS network
uint64 current_epoch = 1 [ json_name = "currentEpoch" ];
// Magic number of the sidechain of the FrostFS network
uint64 magic_number = 2 [ json_name = "magicNumber" ];
// MillisecondsPerBlock network parameter of the sidechain of the FrostFS
// network
int64 ms_per_block = 3 [ json_name = "msPerBlock" ];
// FrostFS network configuration
NetworkConfig network_config = 4 [ json_name = "networkConfig" ];
}

939
object/service.proto
View file

@ -1,939 +0,0 @@
edition = "2023";
package neo.fs.v2.object;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object/grpc;object";
option csharp_namespace = "Neo.FileStorage.API.Object";
import "object/types.proto";
import "refs/types.proto";
import "session/types.proto";
// `ObjectService` provides API for manipulating objects. Object operations do
// not affect the sidechain and are only served by nodes in p2p style.
service ObjectService {
// Receive full object structure, including Headers and payload. Response uses
// gRPC stream. First response message carries the object with the requested
// address. Chunk messages are parts of the object's payload if it is needed.
// All messages, except the first one, carry payload chunks. The requested
// object can be restored by concatenation of object message payload and all
// chunks keeping the receiving order.
//
// Extended headers can change `Get` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requsted version of Network Map for object placement
// calculation.
// * [ __SYSTEM__NETMAP_LOOKUP_DEPTH ] \
// (`__NEOFS__NETMAP_LOOKUP_DEPTH` is deprecated) \
// Will try older versions (starting from `__SYSTEM__NETMAP_EPOCH`
// (`__NEOFS__NETMAP_EPOCH` is deprecated) if specified or the latest one
// otherwise) of Network Map to find an object until the depth limit is
// reached.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// read access to the object is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// object not found in container;
// - **OBJECT_ALREADY_REMOVED** (2052, SECTION_OBJECT): \
// the requested object has been marked as deleted;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Get(GetRequest) returns (stream GetResponse);
// Put the object into container. Request uses gRPC stream. First message
// SHOULD be of PutHeader type. `ContainerID` and `OwnerID` of an object
// SHOULD be set. Session token SHOULD be obtained before `PUT` operation (see
// session package). Chunk messages are considered by server as a part of an
// object payload. All messages, except first one, SHOULD be payload chunks.
// Chunk messages SHOULD be sent in the direct order of fragmentation.
//
// Extended headers can change `Put` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requsted version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object has been successfully saved in the container;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// write access to the container is denied;
// - **LOCKED** (2050, SECTION_OBJECT): \
// placement of an object of type TOMBSTONE that includes at least one
// locked object is prohibited;
// - **LOCK_NON_REGULAR_OBJECT** (2051, SECTION_OBJECT): \
// placement of an object of type LOCK that includes at least one object of
// type other than REGULAR is prohibited;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object storage container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_NOT_FOUND** (4096, SECTION_SESSION): \
// (for trusted object preparation) session private key does not exist or
// has
// been deleted;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Put(stream PutRequest) returns (PutResponse);
// Delete the object from a container. There is no immediate removal
// guarantee. Object will be marked for removal and deleted eventually.
//
// Extended headers can change `Delete` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object has been successfully marked to be removed from the container;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// delete access to the object is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// the object could not be deleted because it has not been \
// found within the container;
// - **LOCKED** (2050, SECTION_OBJECT): \
// deleting a locked object is prohibited;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Delete(DeleteRequest) returns (DeleteResponse);
// Returns the object Headers without data payload. By default full header is
// returned. If `main_only` request field is set, the short header with only
// the very minimal information will be returned instead.
//
// Extended headers can change `Head` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object header has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// access to operation HEAD of the object is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// object not found in container;
// - **OBJECT_ALREADY_REMOVED** (2052, SECTION_OBJECT): \
// the requested object has been marked as deleted;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Head(HeadRequest) returns (HeadResponse);
// Search objects in container. Search query allows to match by Object
// Header's filed values. Please see the corresponding FrostFS Technical
// Specification section for more details.
//
// Extended headers can change `Search` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// objects have been successfully selected;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// access to operation SEARCH of the object is denied;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// search container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Search(SearchRequest) returns (stream SearchResponse);
// Get byte range of data payload. Range is set as an (offset, length) tuple.
// Like in `Get` method, the response uses gRPC stream. Requested range can be
// restored by concatenation of all received payload chunks keeping the
// receiving order.
//
// Extended headers can change `GetRange` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
// * [ __SYSTEM__NETMAP_LOOKUP_DEPTH ] \
// (`__NEOFS__NETMAP_LOOKUP_DEPTH` is deprecated) \
// Will try older versions of Network Map to find an object until the depth
// limit is reached.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// data range of the object payload has been successfully read;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// access to operation RANGE of the object is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// object not found in container;
// - **OBJECT_ALREADY_REMOVED** (2052, SECTION_OBJECT): \
// the requested object has been marked as deleted.
// - **OUT_OF_RANGE** (2053, SECTION_OBJECT): \
// the requested range is out of bounds;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc GetRange(GetRangeRequest) returns (stream GetRangeResponse);
// Returns homomorphic or regular hash of object's payload range after
// applying XOR operation with the provided `salt`. Ranges are set of (offset,
// length) tuples. Hashes order in response corresponds to the ranges order in
// the request. Note that hash is calculated for XORed data.
//
// Extended headers can change `GetRangeHash` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
// * [ __SYSTEM__NETMAP_LOOKUP_DEPTH ] \
// (`__NEOFS__NETMAP_LOOKUP_DEPTH` is deprecated) \
// Will try older versions of Network Map to find an object until the depth
// limit is reached.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// data range of the object payload has been successfully hashed;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// access to operation RANGEHASH of the object is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// object not found in container;
// - **OUT_OF_RANGE** (2053, SECTION_OBJECT): \
// the requested range is out of bounds;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc GetRangeHash(GetRangeHashRequest) returns (GetRangeHashResponse);
// Put the prepared object into container.
// `ContainerID`, `ObjectID`, `OwnerID`, `PayloadHash` and `PayloadLength` of
// an object MUST be set.
//
// Extended headers can change `Put` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requested version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object has been successfully saved in the container;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// write access to the container is denied;
// - **LOCKED** (2050, SECTION_OBJECT): \
// placement of an object of type TOMBSTONE that includes at least one
// locked object is prohibited;
// - **LOCK_NON_REGULAR_OBJECT** (2051, SECTION_OBJECT): \
// placement of an object of type LOCK that includes at least one object of
// type other than REGULAR is prohibited;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object storage container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_NOT_FOUND** (4096, SECTION_SESSION): \
// (for trusted object preparation) session private key does not exist or
// has
// been deleted;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc PutSingle(PutSingleRequest) returns (PutSingleResponse);
// Patch the object. Request uses gRPC stream. First message must set
// the address of the object that is going to get patched. If the object's
// attributes are patched, then these attrubutes must be set only within the
// first stream message.
//
// If the patch request is performed by NOT the object's owner but if the
// actor has the permission to perform the patch, then `OwnerID` of the object
// is changed. In this case the object's owner loses the object's ownership
// after the patch request is successfully done.
//
// As objects are content-addressable the patching causes new object ID
// generation for the patched object. This object id is set witihn
// `PatchResponse`. But the object id may remain unchanged in such cases:
// 1. The chunk of the applying patch contains the same value as the object's
// payload within the same range;
// 2. The patch that reverts the changes applied by preceding patch;
// 3. The application of the same patches for the object a few times.
//
// Extended headers can change `Patch` behaviour:
// * [ __SYSTEM__NETMAP_EPOCH \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Will use the requsted version of Network Map for object placement
// calculation.
//
// Please refer to detailed `XHeader` description.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS): \
// object has been successfully patched and saved in the container;
// - Common failures (SECTION_FAILURE_COMMON);
// - **ACCESS_DENIED** (2048, SECTION_OBJECT): \
// write access to the container is denied;
// - **OBJECT_NOT_FOUND** (2049, SECTION_OBJECT): \
// object not found in container;
// - **OBJECT_ALREADY_REMOVED** (2052, SECTION_OBJECT): \
// the requested object has been marked as deleted.
// - **OUT_OF_RANGE** (2053, SECTION_OBJECT): \
// the requested range is out of bounds;
// - **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
// object storage container not found;
// - **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
// access to container is denied;
// - **TOKEN_NOT_FOUND** (4096, SECTION_SESSION): \
// (for trusted object preparation) session private key does not exist or
// has been deleted;
// - **TOKEN_EXPIRED** (4097, SECTION_SESSION): \
// provided session token has expired.
rpc Patch(stream PatchRequest) returns (PatchResponse);
}
// GET object request
message GetRequest {
// GET Object request body
message Body {
// Address of the requested object
neo.fs.v2.refs.Address address = 1;
// If `raw` flag is set, request will work only with objects that are
// physically stored on the peer node
bool raw = 2;
}
// Body of get object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// GET object response
message GetResponse {
// GET Object Response body
message Body {
// Initial part of the `Object` structure stream. Technically it's a
// set of all `Object` structure's fields except `payload`.
message Init {
// Object's unique identifier.
neo.fs.v2.refs.ObjectID object_id = 1;
// Signed `ObjectID`
neo.fs.v2.refs.Signature signature = 2;
// Object metadata headers
Header header = 3;
}
// Single message in the response stream.
oneof object_part {
// Initial part of the object stream
Init init = 1;
// Chunked object payload
bytes chunk = 2;
// Meta information of split hierarchy for object assembly.
SplitInfo split_info = 3;
// Meta information for EC object assembly.
ECInfo ec_info = 4;
}
}
// Body of get object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// PUT object request
message PutRequest {
// PUT request body
message Body {
// Newly created object structure parameters. If some optional parameters
// are not set, they will be calculated by a peer node.
message Init {
// ObjectID if available.
neo.fs.v2.refs.ObjectID object_id = 1;
// Object signature if available
neo.fs.v2.refs.Signature signature = 2;
// Object's Header
Header header = 3;
// Number of copies of the object to store within the RPC call. By
// default, object is processed according to the container's placement
// policy. Can be one of:
// 1. A single number; applied to the whole request and is treated as
// a minimal number of nodes that must store an object to complete the
// request successfully.
// 2. An ordered array; every number is treated as a minimal number of
// nodes in a corresponding placement vector that must store an object
// to complete the request successfully. The length MUST equal the
// placement vectors number, otherwise request is considered malformed.
repeated uint32 copies_number = 4;
}
// Single message in the request stream.
oneof object_part {
// Initial part of the object stream
Init init = 1;
// Chunked object payload
bytes chunk = 2;
}
}
// Body of put object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// PUT Object response
message PutResponse {
// PUT Object response body
message Body {
// Identifier of the saved object
neo.fs.v2.refs.ObjectID object_id = 1;
}
// Body of put object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object DELETE request
message DeleteRequest {
// Object DELETE request body
message Body {
// Address of the object to be deleted
neo.fs.v2.refs.Address address = 1;
}
// Body of delete object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// DeleteResponse body is empty because we cannot guarantee permanent object
// removal in distributed system.
message DeleteResponse {
// Object DELETE Response has an empty body.
message Body {
// Address of the tombstone created for the deleted object
neo.fs.v2.refs.Address tombstone = 1;
}
// Body of delete object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object HEAD request
message HeadRequest {
// Object HEAD request body
message Body {
// Address of the object with the requested Header
neo.fs.v2.refs.Address address = 1;
// Return only minimal header subset
bool main_only = 2;
// If `raw` flag is set, request will work only with objects that are
// physically stored on the peer node
bool raw = 3;
}
// Body of head object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Tuple of a full object header and signature of an `ObjectID`. \
// Signed `ObjectID` is present to verify full header's authenticity through the
// following steps:
//
// 1. Calculate `SHA-256` of the marshalled `Header` structure
// 2. Check if the resulting hash matches `ObjectID`
// 3. Check if `ObjectID` signature in `signature` field is correct
message HeaderWithSignature {
// Full object header
Header header = 1 [ json_name = "header" ];
// Signed `ObjectID` to verify full header's authenticity
neo.fs.v2.refs.Signature signature = 2 [ json_name = "signature" ];
}
// Object HEAD response
message HeadResponse {
// Object HEAD response body
message Body {
// Requested object header, it's part or meta information about split
// object.
oneof head {
// Full object's `Header` with `ObjectID` signature
HeaderWithSignature header = 1;
// Short object header
ShortHeader short_header = 2;
// Meta information of split hierarchy.
SplitInfo split_info = 3;
// Meta information for EC object assembly.
ECInfo ec_info = 4;
}
}
// Body of head object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object Search request
message SearchRequest {
// Object Search request body
message Body {
// Container identifier were to search
neo.fs.v2.refs.ContainerID container_id = 1;
// Version of the Query Language used
uint32 version = 2;
// Filter structure checks if the object header field or the attribute
// content matches a value.
//
// If no filters are set, search request will return all objects of the
// container, including Regular object and Tombstone
// objects. Most human users expect to get only object they can directly
// work with. In that case, `$Object:ROOT` filter should be used.
//
// By default `key` field refers to the corresponding object's `Attribute`.
// Some Object's header fields can also be accessed by adding `$Object:`
// prefix to the name. Here is the list of fields available via this prefix:
//
// * $Object:version \
// version
// * $Object:objectID \
// object_id
// * $Object:containerID \
// container_id
// * $Object:ownerID \
// owner_id
// * $Object:creationEpoch \
// creation_epoch
// * $Object:payloadLength \
// payload_length
// * $Object:payloadHash \
// payload_hash
// * $Object:objectType \
// object_type
// * $Object:homomorphicHash \
// homomorphic_hash
// * $Object:split.parent \
// object_id of parent
// * $Object:split.splitID \
// 16 byte UUIDv4 used to identify the split object hierarchy parts
// * $Object:ec.parent \
// If the object is stored according to EC policy, then ec_parent
// attribute is set to return an id list of all related EC chunks.
//
// There are some well-known filter aliases to match objects by certain
// properties:
//
// * $Object:ROOT \
// Returns only `REGULAR` type objects that are not split or that are the
// top level root objects in a split hierarchy. This includes objects not
// present physically, like large objects split into smaller objects
// without a separate top-level root object. Objects of other types like
// Locks and Tombstones will not be shown. This filter may be
// useful for listing objects like `ls` command of some virtual file
// system. This filter is activated if the `key` exists, disregarding the
// value and matcher type.
// * $Object:PHY \
// Returns only objects physically stored in the system. This filter is
// activated if the `key` exists, disregarding the value and matcher type.
//
// Note: using filters with a key with prefix `$Object:` and match type
// `NOT_PRESENT `is not recommended since this is not a cross-version
// approach. Behavior when processing this kind of filters is undefined.
message Filter {
// Match type to use
MatchType match_type = 1 [ json_name = "matchType" ];
// Attribute or Header fields to match
string key = 2 [ json_name = "key" ];
// Value to match
string value = 3 [ json_name = "value" ];
}
// List of search expressions
repeated Filter filters = 3;
}
// Body of search object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Search response
message SearchResponse {
// Object Search response body
message Body {
// List of `ObjectID`s that match the search query
repeated neo.fs.v2.refs.ObjectID id_list = 1;
}
// Body of search object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object payload range.Ranges of zero length SHOULD be considered as invalid.
message Range {
// Offset of the range from the object payload start
uint64 offset = 1;
// Length in bytes of the object payload range
uint64 length = 2;
}
// Request part of object's payload
message GetRangeRequest {
// Byte range of object's payload request body
message Body {
// Address of the object containing the requested payload range
neo.fs.v2.refs.Address address = 1;
// Requested payload range
Range range = 2;
// If `raw` flag is set, request will work only with objects that are
// physically stored on the peer node.
bool raw = 3;
}
// Body of get range object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Get part of object's payload
message GetRangeResponse {
// Get Range response body uses streams to transfer the response. Because
// object payload considered a byte sequence, there is no need to have some
// initial preamble message. The requested byte range is sent as a series
// chunks.
message Body {
// Requested object range or meta information about split object.
oneof range_part {
// Chunked object payload's range.
bytes chunk = 1;
// Meta information of split hierarchy.
SplitInfo split_info = 2;
// Meta information for EC object assembly.
ECInfo ec_info = 3;
}
}
// Body of get range object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Get hash of object's payload part
message GetRangeHashRequest {
// Get hash of object's payload part request body.
message Body {
// Address of the object that containing the requested payload range
neo.fs.v2.refs.Address address = 1;
// List of object's payload ranges to calculate homomorphic hash
repeated Range ranges = 2;
// Binary salt to XOR object's payload ranges before hash calculation
bytes salt = 3;
// Checksum algorithm type
neo.fs.v2.refs.ChecksumType type = 4;
}
// Body of get range hash object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Get hash of object's payload part
message GetRangeHashResponse {
// Get hash of object's payload part response body.
message Body {
// Checksum algorithm type
neo.fs.v2.refs.ChecksumType type = 1;
// List of range hashes in a binary format
repeated bytes hash_list = 2;
}
// Body of get range hash object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object PUT Single request
message PutSingleRequest {
// PUT Single request body
message Body {
// Prepared object with payload.
Object object = 1;
// Number of copies of the object to store within the RPC call. By default,
// object is processed according to the container's placement policy.
// Every number is treated as a minimal number of
// nodes in a corresponding placement vector that must store an object
// to complete the request successfully. The length MUST equal the placement
// vectors number, otherwise request is considered malformed.
repeated uint32 copies_number = 2;
}
// Body of put single object request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Object PUT Single response
message PutSingleResponse {
// PUT Single Object response body
message Body {}
// Body of put single object response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}
// Object PATCH request
message PatchRequest {
// PATCH request body
message Body {
// The address of the object that is requested to get patched.
neo.fs.v2.refs.Address address = 1;
// New attributes for the object. See `replace_attributes` flag usage to
// define how new attributes should be set.
repeated neo.fs.v2.object.Header.Attribute new_attributes = 2;
// If this flag is set, then the object's attributes will be entirely
// replaced by `new_attributes` list. The empty `new_attributes` list with
// `replace_attributes = true` just resets attributes list for the object.
//
// Default `false` value for this flag means the attributes will be just
// merged. If the incoming `new_attributes` list contains already existing
// key, then it just replaces it while merging the lists.
bool replace_attributes = 3;
// The patch for the object's payload.
message Patch {
// The range of the source object for which the payload is replaced by the
// patch's chunk. If the range's `length = 0`, then the patch's chunk is
// just appended to the original payload starting from the `offest`
// without any replace.
Range source_range = 1;
// The chunk that is being appended to or that replaces the original
// payload on the given range.
bytes chunk = 2;
}
// The patch that is applied for the object.
Patch patch = 4;
}
// Body for patch request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Object PATCH response
message PatchResponse {
// PATCH response body
message Body {
// The object ID of the saved patched object.
neo.fs.v2.refs.ObjectID object_id = 1;
}
// Body for patch response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

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edition = "2023";
package neo.fs.v2.object;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object/grpc;object";
option csharp_namespace = "Neo.FileStorage.API.Object";
import "refs/types.proto";
import "session/types.proto";
// Type of the object payload content. Only `REGULAR` type objects can be split,
// hence `TOMBSTONE` and `LOCK` payload is limited by the
// maximum object size.
//
// String presentation of object type is the same as definition:
// * REGULAR
// * TOMBSTONE
// * LOCK
enum ObjectType {
// Just a normal object
REGULAR = 0;
// Used internally to identify deleted objects
TOMBSTONE = 1;
// Unused (previously storageGroup information)
// _ = 2;
// Object lock
LOCK = 3;
}
// Type of match expression
enum MatchType {
// Unknown. Not used
MATCH_TYPE_UNSPECIFIED = 0;
// Full string match
STRING_EQUAL = 1;
// Full string mismatch
STRING_NOT_EQUAL = 2;
// Lack of key
NOT_PRESENT = 3;
// String prefix match
COMMON_PREFIX = 4;
}
// Short header fields
message ShortHeader {
// Object format version. Effectively, the version of API library used to
// create particular object.
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Epoch when the object was created
uint64 creation_epoch = 2 [ json_name = "creationEpoch" ];
// Object's owner
neo.fs.v2.refs.OwnerID owner_id = 3 [ json_name = "ownerID" ];
// Type of the object payload content
ObjectType object_type = 4 [ json_name = "objectType" ];
// Size of payload in bytes.
// `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown
uint64 payload_length = 5 [ json_name = "payloadLength" ];
// Hash of payload bytes
neo.fs.v2.refs.Checksum payload_hash = 6 [ json_name = "payloadHash" ];
// Homomorphic hash of the object payload
neo.fs.v2.refs.Checksum homomorphic_hash = 7
[ json_name = "homomorphicHash" ];
}
// Object Header
message Header {
// Object format version. Effectively, the version of API library used to
// create particular object
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Object's container
neo.fs.v2.refs.ContainerID container_id = 2 [ json_name = "containerID" ];
// Object's owner
neo.fs.v2.refs.OwnerID owner_id = 3 [ json_name = "ownerID" ];
// Object creation Epoch
uint64 creation_epoch = 4 [ json_name = "creationEpoch" ];
// Size of payload in bytes.
// `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown.
uint64 payload_length = 5 [ json_name = "payloadLength" ];
// Hash of payload bytes
neo.fs.v2.refs.Checksum payload_hash = 6 [ json_name = "payloadHash" ];
// Type of the object payload content
ObjectType object_type = 7 [ json_name = "objectType" ];
// Homomorphic hash of the object payload
neo.fs.v2.refs.Checksum homomorphic_hash = 8
[ json_name = "homomorphicHash" ];
// Session token, if it was used during Object creation. Need it to verify
// integrity and authenticity out of Request scope.
neo.fs.v2.session.SessionToken session_token = 9
[ json_name = "sessionToken" ];
// `Attribute` is a user-defined Key-Value metadata pair attached to an
// object.
//
// Key name must be an object-unique valid UTF-8 string. Value can't be empty.
// Objects with duplicated attribute names or attributes with empty values
// will be considered invalid.
//
// There are some "well-known" attributes starting with `__SYSTEM__`
// (`__NEOFS__` is deprecated) prefix that affect system behaviour:
//
// * [ __SYSTEM__UPLOAD_ID ] \
// (`__NEOFS__UPLOAD_ID` is deprecated) \
// Marks smaller parts of a split bigger object
// * [ __SYSTEM__EXPIRATION_EPOCH ] \
// (`__NEOFS__EXPIRATION_EPOCH` is deprecated) \
// The epoch after which object with no LOCKs on it becomes unavailable.
// Locked object continues to be available until each of the LOCKs expire.
// * [ __SYSTEM__TICK_EPOCH ] \
// (`__NEOFS__TICK_EPOCH` is deprecated) \
// Decimal number that defines what epoch must produce
// object notification with UTF-8 object address in a
// body (`0` value produces notification right after
// object put)
// * [ __SYSTEM__TICK_TOPIC ] \
// (`__NEOFS__TICK_TOPIC` is deprecated) \
// UTF-8 string topic ID that is used for object notification
//
// And some well-known attributes used by applications only:
//
// * Name \
// Human-friendly name
// * FileName \
// File name to be associated with the object on saving
// * FilePath \
// Full path to be associated with the object on saving. Should start with a
// '/' and use '/' as a delimiting symbol. Trailing '/' should be
// interpreted as a virtual directory marker. If an object has conflicting
// FilePath and FileName, FilePath should have higher priority, because it
// is used to construct the directory tree. FilePath with trailing '/' and
// non-empty FileName attribute should not be used together.
// * Timestamp \
// User-defined local time of object creation in Unix Timestamp format
// * Content-Type \
// MIME Content Type of object's payload
//
// For detailed description of each well-known attribute please see the
// corresponding section in FrostFS Technical Specification.
message Attribute {
// string key to the object attribute
string key = 1 [ json_name = "key" ];
// string value of the object attribute
string value = 2 [ json_name = "value" ];
}
// User-defined object attributes
repeated Attribute attributes = 10 [ json_name = "attributes" ];
// Bigger objects can be split into a chain of smaller objects. Information
// about inter-dependencies between spawned objects and how to re-construct
// the original one is in the `Split` headers. Parent and children objects
// must be within the same container.
message Split {
// Identifier of the origin object. Known only to the minor child.
neo.fs.v2.refs.ObjectID parent = 1 [ json_name = "parent" ];
// Identifier of the left split neighbor
neo.fs.v2.refs.ObjectID previous = 2 [ json_name = "previous" ];
// `signature` field of the parent object. Used to reconstruct parent.
neo.fs.v2.refs.Signature parent_signature = 3
[ json_name = "parentSignature" ];
// `header` field of the parent object. Used to reconstruct parent.
Header parent_header = 4 [ json_name = "parentHeader" ];
// List of identifiers of the objects generated by splitting current one.
repeated neo.fs.v2.refs.ObjectID children = 5 [ json_name = "children" ];
// 16 byte UUIDv4 used to identify the split object hierarchy parts. Must be
// unique inside container. All objects participating in the split must have
// the same `split_id` value.
bytes split_id = 6 [ json_name = "splitID" ];
}
// Position of the object in the split hierarchy
Split split = 11 [ json_name = "split" ];
// Erasure code can be applied to any object.
// Information about encoded object structure is stored in `EC` header.
// All objects belonging to a single EC group have the same `parent` field.
message EC {
// Identifier of the origin object. Known to all chunks.
neo.fs.v2.refs.ObjectID parent = 1 [ json_name = "parent" ];
// Index of this chunk.
uint32 index = 2 [ json_name = "index" ];
// Total number of chunks in this split.
uint32 total = 3 [ json_name = "total" ];
// Total length of a parent header. Used to trim padding zeroes.
uint32 header_length = 4 [ json_name = "headerLength" ];
// Chunk of a parent header.
bytes header = 5 [ json_name = "header" ];
// As the origin object is EC-splitted its identifier is known to all
// chunks as parent. But parent itself can be a part of Split (does not
// relate to EC-split). In this case parent_split_id should be set.
bytes parent_split_id = 6 [ json_name = "parentSplitID" ];
// EC-parent's parent ID. parent_split_parent_id is set if EC-parent,
// itself, is a part of Split and if an object ID of its parent is
// presented. The field allows to determine how EC-chunk is placed in Split
// hierarchy.
neo.fs.v2.refs.ObjectID parent_split_parent_id = 7
[ json_name = "parentSplitParentID" ];
// EC parent's attributes.
repeated Attribute parent_attributes = 8 [ json_name = "parentAttributes" ];
}
// Erasure code chunk information.
EC ec = 12 [ json_name = "ec" ];
}
// Object structure. Object is immutable and content-addressed. It means
// `ObjectID` will change if the header or the payload changes. It's calculated
// as a hash of header field which contains hash of the object's payload.
//
// For non-regular object types payload format depends on object type specified
// in the header.
message Object {
// Object's unique identifier.
neo.fs.v2.refs.ObjectID object_id = 1 [ json_name = "objectID" ];
// Signed object_id
neo.fs.v2.refs.Signature signature = 2 [ json_name = "signature" ];
// Object metadata headers
Header header = 3 [ json_name = "header" ];
// Payload bytes
bytes payload = 4 [ json_name = "payload" ];
}
// Meta information of split hierarchy for object assembly. With the last part
// one can traverse linked list of split hierarchy back to the first part and
// assemble the original object. With a linking object one can assemble an
// object right from the object parts.
message SplitInfo {
// 16 byte UUID used to identify the split object hierarchy parts.
bytes split_id = 1;
// The identifier of the last object in split hierarchy parts. It contains
// split header with the original object header.
neo.fs.v2.refs.ObjectID last_part = 2;
// The identifier of a linking object for split hierarchy parts. It contains
// split header with the original object header and a sorted list of
// object parts.
neo.fs.v2.refs.ObjectID link = 3;
}
// Meta information for the erasure-encoded object.
message ECInfo {
message Chunk {
// Object ID of the chunk.
neo.fs.v2.refs.ObjectID id = 1;
// Index of the chunk.
uint32 index = 2;
// Total number of chunks in this split.
uint32 total = 3;
}
// Chunk stored on the node.
repeated Chunk chunks = 1;
}

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [accounting/service.proto](#accounting/service.proto)
- Services
- [AccountingService](#neo.fs.v2.accounting.AccountingService)
- Messages
- [BalanceRequest](#neo.fs.v2.accounting.BalanceRequest)
- [BalanceRequest.Body](#neo.fs.v2.accounting.BalanceRequest.Body)
- [BalanceResponse](#neo.fs.v2.accounting.BalanceResponse)
- [BalanceResponse.Body](#neo.fs.v2.accounting.BalanceResponse.Body)
- [accounting/types.proto](#accounting/types.proto)
- Messages
- [Decimal](#neo.fs.v2.accounting.Decimal)
- [Scalar Value Types](#scalar-value-types)
<a name="accounting/service.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## accounting/service.proto
<a name="neo.fs.v2.accounting.AccountingService"></a>
### Service "neo.fs.v2.accounting.AccountingService"
Accounting service provides methods for interaction with FrostFS sidechain
via other FrostFS nodes to get information about the account balance. Deposit
and Withdraw operations can't be implemented here, as they require Mainnet
FrostFS smart contract invocation. Transfer operations between internal
FrostFS accounts are possible if both use the same token type.
```
rpc Balance(BalanceRequest) returns (BalanceResponse);
```
#### Method Balance
Returns the amount of funds in GAS token for the requested FrostFS account.
Statuses:
- **OK** (0, SECTION_SUCCESS):
balance has been successfully read;
- Common failures (SECTION_FAILURE_COMMON).
| Name | Input | Output |
| ---- | ----- | ------ |
| Balance | [BalanceRequest](#neo.fs.v2.accounting.BalanceRequest) | [BalanceResponse](#neo.fs.v2.accounting.BalanceResponse) |
<!-- end services -->
<a name="neo.fs.v2.accounting.BalanceRequest"></a>
### Message BalanceRequest
BalanceRequest message
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [BalanceRequest.Body](#neo.fs.v2.accounting.BalanceRequest.Body) | | Body of the balance request message. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.accounting.BalanceRequest.Body"></a>
### Message BalanceRequest.Body
To indicate the account for which the balance is requested, its identifier
is used. It can be any existing account in FrostFS sidechain `Balance`
smart contract. If omitted, client implementation MUST set it to the
request's signer `OwnerID`.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Valid user identifier in `OwnerID` format for which the balance is requested. Required field. |
<a name="neo.fs.v2.accounting.BalanceResponse"></a>
### Message BalanceResponse
BalanceResponse message
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [BalanceResponse.Body](#neo.fs.v2.accounting.BalanceResponse.Body) | | Body of the balance response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.accounting.BalanceResponse.Body"></a>
### Message BalanceResponse.Body
The amount of funds in GAS token for the `OwnerID`'s account requested.
Balance is given in the `Decimal` format to avoid precision issues with
rounding.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| balance | [Decimal](#neo.fs.v2.accounting.Decimal) | | Amount of funds in GAS token for the requested account. |
<!-- end messages -->
<!-- end enums -->
<a name="accounting/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## accounting/types.proto
<!-- end services -->
<a name="neo.fs.v2.accounting.Decimal"></a>
### Message Decimal
Standard floating point data type can't be used in FrostFS due to inexactness
of the result when doing lots of small number operations. To solve the lost
precision issue, special `Decimal` format is used for monetary computations.
Please see [The General Decimal Arithmetic
Specification](http://speleotrove.com/decimal/) for detailed problem
description.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| value | [int64](#int64) | | Number in the smallest Token fractions. |
| precision | [uint32](#uint32) | | Precision value indicating how many smallest fractions can be in one integer. |
<!-- end messages -->
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [acl/types.proto](#acl/types.proto)
- Messages
- [BearerToken](#neo.fs.v2.acl.BearerToken)
- [BearerToken.Body](#neo.fs.v2.acl.BearerToken.Body)
- [BearerToken.Body.APEOverride](#neo.fs.v2.acl.BearerToken.Body.APEOverride)
- [BearerToken.Body.TokenLifetime](#neo.fs.v2.acl.BearerToken.Body.TokenLifetime)
- [EACLRecord](#neo.fs.v2.acl.EACLRecord)
- [EACLRecord.Filter](#neo.fs.v2.acl.EACLRecord.Filter)
- [EACLRecord.Target](#neo.fs.v2.acl.EACLRecord.Target)
- [EACLTable](#neo.fs.v2.acl.EACLTable)
- [Scalar Value Types](#scalar-value-types)
<a name="acl/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## acl/types.proto
<!-- end services -->
<a name="neo.fs.v2.acl.BearerToken"></a>
### Message BearerToken
BearerToken allows to attach signed Extended ACL rules to the request in
`RequestMetaHeader`. If container's Basic ACL rules allow, the attached rule
set will be checked instead of one attached to the container itself. Just
like [JWT](https://jwt.io), it has a limited lifetime and scope, hence can be
used in the similar use cases, like providing authorisation to externally
authenticated party.
BearerToken can be issued only by the container's owner and must be signed
using the key associated with the container's `OwnerID`.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [BearerToken.Body](#neo.fs.v2.acl.BearerToken.Body) | | Bearer Token body |
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signature of BearerToken body |
<a name="neo.fs.v2.acl.BearerToken.Body"></a>
### Message BearerToken.Body
Bearer Token body structure contains Extended ACL table issued by the
container owner with additional information preventing token abuse.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| eacl_table | [EACLTable](#neo.fs.v2.acl.EACLTable) | | Table of Extended ACL rules to use instead of the ones attached to the container. If it contains `container_id` field, bearer token is only valid for this specific container. Otherwise, any container of the same owner is allowed.
Deprecated: eACL tables are no longer relevant - `APEOverrides` should be used instead. |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | `OwnerID` defines to whom the token was issued. It must match the request originator's `OwnerID`. If empty, any token bearer will be accepted. |
| lifetime | [BearerToken.Body.TokenLifetime](#neo.fs.v2.acl.BearerToken.Body.TokenLifetime) | | Token expiration and valid time period parameters |
| allow_impersonate | [bool](#bool) | | AllowImpersonate flag to consider token signer as request owner. If this field is true extended ACL table in token body isn't processed. |
| ape_override | [BearerToken.Body.APEOverride](#neo.fs.v2.acl.BearerToken.Body.APEOverride) | | APE override for the target. |
<a name="neo.fs.v2.acl.BearerToken.Body.APEOverride"></a>
### Message BearerToken.Body.APEOverride
APEOverride is the list of APE chains defined for a target.
These chains are meant to serve as overrides to the already defined (or
even undefined) APE chains for the target (see contract `Policy`).
The server-side processing of the bearer token with set APE overrides
must verify if a client is permitted to override chains for the target,
preventing unauthorized access through the APE mechanism.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| target | [frostfs.v2.ape.ChainTarget](#frostfs.v2.ape.ChainTarget) | | Target for which chains are applied. |
| chains | [frostfs.v2.ape.Chain](#frostfs.v2.ape.Chain) | repeated | The list of APE chains. |
<a name="neo.fs.v2.acl.BearerToken.Body.TokenLifetime"></a>
### Message BearerToken.Body.TokenLifetime
Lifetime parameters of the token. Field names taken from
[rfc7519](https://tools.ietf.org/html/rfc7519).
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| exp | [uint64](#uint64) | | Expiration Epoch |
| nbf | [uint64](#uint64) | | Not valid before Epoch |
| iat | [uint64](#uint64) | | Issued at Epoch |
<a name="neo.fs.v2.acl.EACLRecord"></a>
### Message EACLRecord
Describes a single eACL rule.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| operation | [Operation](#neo.fs.v2.acl.Operation) | | FrostFS request Verb to match |
| action | [Action](#neo.fs.v2.acl.Action) | | Rule execution result. Either allows or denies access if filters match. |
| filters | [EACLRecord.Filter](#neo.fs.v2.acl.EACLRecord.Filter) | repeated | List of filters to match and see if rule is applicable |
| targets | [EACLRecord.Target](#neo.fs.v2.acl.EACLRecord.Target) | repeated | List of target subjects to apply ACL rule to |
<a name="neo.fs.v2.acl.EACLRecord.Filter"></a>
### Message EACLRecord.Filter
Filter to check particular properties of the request or the object.
By default `key` field refers to the corresponding object's `Attribute`.
Some Object's header fields can also be accessed by adding `$Object:`
prefix to the name. Here is the list of fields available via this prefix:
* $Object:version \
version
* $Object:objectID \
object_id
* $Object:containerID \
container_id
* $Object:ownerID \
owner_id
* $Object:creationEpoch \
creation_epoch
* $Object:payloadLength \
payload_length
* $Object:payloadHash \
payload_hash
* $Object:objectType \
object_type
* $Object:homomorphicHash \
homomorphic_hash
Please note, that if request or response does not have object's headers of
full object (Range, RangeHash, Search, Delete), it will not be possible to
filter by object header fields or user attributes. From the well-known list
only `$Object:objectID` and `$Object:containerID` will be available, as
it's possible to take that information from the requested address.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| header_type | [HeaderType](#neo.fs.v2.acl.HeaderType) | | Define if Object or Request header will be used |
| match_type | [MatchType](#neo.fs.v2.acl.MatchType) | | Match operation type |
| key | [string](#string) | | Name of the Header to use |
| value | [string](#string) | | Expected Header Value or pattern to match |
<a name="neo.fs.v2.acl.EACLRecord.Target"></a>
### Message EACLRecord.Target
Target to apply ACL rule. Can be a subject's role class or a list of public
keys to match.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| role | [Role](#neo.fs.v2.acl.Role) | | Target subject's role class |
| keys | [bytes](#bytes) | repeated | List of public keys to identify target subject |
<a name="neo.fs.v2.acl.EACLTable"></a>
### Message EACLTable
Extended ACL rules table. A list of ACL rules defined additionally to Basic
ACL. Extended ACL rules can be attached to a container and can be updated
or may be defined in `BearerToken` structure. Please see the corresponding
FrostFS Technical Specification section for detailed description.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | eACL format version. Effectively, the version of API library used to create eACL Table. |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Identifier of the container that should use given access control rules |
| records | [EACLRecord](#neo.fs.v2.acl.EACLRecord) | repeated | List of Extended ACL rules |
<!-- end messages -->
<a name="neo.fs.v2.acl.Action"></a>
### Action
Rule execution result action. Either allows or denies access if the rule's
filters match.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ACTION_UNSPECIFIED | 0 | Unspecified action, default value |
| ALLOW | 1 | Allow action |
| DENY | 2 | Deny action |
<a name="neo.fs.v2.acl.HeaderType"></a>
### HeaderType
Enumeration of possible sources of Headers to apply filters.
| Name | Number | Description |
| ---- | ------ | ----------- |
| HEADER_UNSPECIFIED | 0 | Unspecified header, default value. |
| REQUEST | 1 | Filter request headers |
| OBJECT | 2 | Filter object headers |
| SERVICE | 3 | Filter service headers. These are not processed by FrostFS nodes and exist for service use only. |
<a name="neo.fs.v2.acl.MatchType"></a>
### MatchType
MatchType is an enumeration of match types.
| Name | Number | Description |
| ---- | ------ | ----------- |
| MATCH_TYPE_UNSPECIFIED | 0 | Unspecified match type, default value. |
| STRING_EQUAL | 1 | Return true if strings are equal |
| STRING_NOT_EQUAL | 2 | Return true if strings are different |
<a name="neo.fs.v2.acl.Operation"></a>
### Operation
Request's operation type to match if the rule is applicable to a particular
request.
| Name | Number | Description |
| ---- | ------ | ----------- |
| OPERATION_UNSPECIFIED | 0 | Unspecified operation, default value |
| GET | 1 | Get |
| HEAD | 2 | Head |
| PUT | 3 | Put |
| DELETE | 4 | Delete |
| SEARCH | 5 | Search |
| GETRANGE | 6 | GetRange |
| GETRANGEHASH | 7 | GetRangeHash |
<a name="neo.fs.v2.acl.Role"></a>
### Role
Target role of the access control rule in access control list.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ROLE_UNSPECIFIED | 0 | Unspecified role, default value |
| USER | 1 | User target rule is applied if sender is the owner of the container |
| SYSTEM | 2 | System target rule is applied if sender is a storage node within the container or an inner ring node |
| OTHERS | 3 | Others target rule is applied if sender is neither a user nor a system target |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [ape/types.proto](#ape/types.proto)
- Messages
- [Chain](#frostfs.v2.ape.Chain)
- [ChainTarget](#frostfs.v2.ape.ChainTarget)
- [Scalar Value Types](#scalar-value-types)
<a name="ape/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## ape/types.proto
<!-- end services -->
<a name="frostfs.v2.ape.Chain"></a>
### Message Chain
Chain is a chain of rules defined for a specific target.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| raw | [bytes](#bytes) | | Raw representation of a serizalized rule chain. |
<a name="frostfs.v2.ape.ChainTarget"></a>
### Message ChainTarget
ChainTarget is an object to which a rule chain is defined.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| type | [TargetType](#frostfs.v2.ape.TargetType) | | |
| name | [string](#string) | | |
<!-- end messages -->
<a name="frostfs.v2.ape.TargetType"></a>
### TargetType
TargetType is a type target to which a rule chain is defined.
| Name | Number | Description |
| ---- | ------ | ----------- |
| UNDEFINED | 0 | |
| NAMESPACE | 1 | |
| CONTAINER | 2 | |
| USER | 3 | |
| GROUP | 4 | |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [apemanager/service.proto](#apemanager/service.proto)
- Services
- [APEManagerService](#frostfs.v2.apemanager.APEManagerService)
- Messages
- [AddChainRequest](#frostfs.v2.apemanager.AddChainRequest)
- [AddChainRequest.Body](#frostfs.v2.apemanager.AddChainRequest.Body)
- [AddChainResponse](#frostfs.v2.apemanager.AddChainResponse)
- [AddChainResponse.Body](#frostfs.v2.apemanager.AddChainResponse.Body)
- [ListChainsRequest](#frostfs.v2.apemanager.ListChainsRequest)
- [ListChainsRequest.Body](#frostfs.v2.apemanager.ListChainsRequest.Body)
- [ListChainsResponse](#frostfs.v2.apemanager.ListChainsResponse)
- [ListChainsResponse.Body](#frostfs.v2.apemanager.ListChainsResponse.Body)
- [RemoveChainRequest](#frostfs.v2.apemanager.RemoveChainRequest)
- [RemoveChainRequest.Body](#frostfs.v2.apemanager.RemoveChainRequest.Body)
- [RemoveChainResponse](#frostfs.v2.apemanager.RemoveChainResponse)
- [RemoveChainResponse.Body](#frostfs.v2.apemanager.RemoveChainResponse.Body)
- [Scalar Value Types](#scalar-value-types)
<a name="apemanager/service.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## apemanager/service.proto
<a name="frostfs.v2.apemanager.APEManagerService"></a>
### Service "frostfs.v2.apemanager.APEManagerService"
`APEManagerService` provides API to manage rule chains within sidechain's
`Policy` smart contract.
```
rpc AddChain(AddChainRequest) returns (AddChainResponse);
rpc RemoveChain(RemoveChainRequest) returns (RemoveChainResponse);
rpc ListChains(ListChainsRequest) returns (ListChainsResponse);
```
#### Method AddChain
Add a rule chain for a specific target to `Policy` smart contract.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
the chain has been successfully added;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
container (as target) not found;
- **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
the operation is denied by the service.
| Name | Input | Output |
| ---- | ----- | ------ |
| AddChain | [AddChainRequest](#frostfs.v2.apemanager.AddChainRequest) | [AddChainResponse](#frostfs.v2.apemanager.AddChainResponse) |
#### Method RemoveChain
Remove a rule chain for a specific target from `Policy` smart contract.
RemoveChain is an idempotent operation: removal of non-existing rule chain
also means success.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
the chain has been successfully removed;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
container (as target) not found;
- **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
the operation is denied by the service.
| Name | Input | Output |
| ---- | ----- | ------ |
| RemoveChain | [RemoveChainRequest](#frostfs.v2.apemanager.RemoveChainRequest) | [RemoveChainResponse](#frostfs.v2.apemanager.RemoveChainResponse) |
#### Method ListChains
List chains defined for a specific target from `Policy` smart contract.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
chains have been successfully listed;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
container (as target) not found;
- **APE_MANAGER_ACCESS_DENIED** (5120, SECTION_APE_MANAGER): \
the operation is denied by the service.
| Name | Input | Output |
| ---- | ----- | ------ |
| ListChains | [ListChainsRequest](#frostfs.v2.apemanager.ListChainsRequest) | [ListChainsResponse](#frostfs.v2.apemanager.ListChainsResponse) |
<!-- end services -->
<a name="frostfs.v2.apemanager.AddChainRequest"></a>
### Message AddChainRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [AddChainRequest.Body](#frostfs.v2.apemanager.AddChainRequest.Body) | | The request's body. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.AddChainRequest.Body"></a>
### Message AddChainRequest.Body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| target | [frostfs.v2.ape.ChainTarget](#frostfs.v2.ape.ChainTarget) | | A target for which a rule chain is added. |
| chain | [frostfs.v2.ape.Chain](#frostfs.v2.ape.Chain) | | The chain to set for the target. |
<a name="frostfs.v2.apemanager.AddChainResponse"></a>
### Message AddChainResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [AddChainResponse.Body](#frostfs.v2.apemanager.AddChainResponse.Body) | | The response's body. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.AddChainResponse.Body"></a>
### Message AddChainResponse.Body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| chain_id | [bytes](#bytes) | | Chain ID assigned for the added rule chain. If chain ID is left empty in the request, then it will be generated. |
<a name="frostfs.v2.apemanager.ListChainsRequest"></a>
### Message ListChainsRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [ListChainsRequest.Body](#frostfs.v2.apemanager.ListChainsRequest.Body) | | The request's body. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.ListChainsRequest.Body"></a>
### Message ListChainsRequest.Body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| target | [frostfs.v2.ape.ChainTarget](#frostfs.v2.ape.ChainTarget) | | Target for which rule chains are listed. |
<a name="frostfs.v2.apemanager.ListChainsResponse"></a>
### Message ListChainsResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [ListChainsResponse.Body](#frostfs.v2.apemanager.ListChainsResponse.Body) | | The response's body. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.ListChainsResponse.Body"></a>
### Message ListChainsResponse.Body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| chains | [frostfs.v2.ape.Chain](#frostfs.v2.ape.Chain) | repeated | The list of chains defined for the reqeusted target. |
<a name="frostfs.v2.apemanager.RemoveChainRequest"></a>
### Message RemoveChainRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [RemoveChainRequest.Body](#frostfs.v2.apemanager.RemoveChainRequest.Body) | | The request's body. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.RemoveChainRequest.Body"></a>
### Message RemoveChainRequest.Body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| target | [frostfs.v2.ape.ChainTarget](#frostfs.v2.ape.ChainTarget) | | Target for which a rule chain is removed. |
| chain_id | [bytes](#bytes) | | Chain ID assigned for the rule chain. |
<a name="frostfs.v2.apemanager.RemoveChainResponse"></a>
### Message RemoveChainResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [RemoveChainResponse.Body](#frostfs.v2.apemanager.RemoveChainResponse.Body) | | The response's body. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="frostfs.v2.apemanager.RemoveChainResponse.Body"></a>
### Message RemoveChainResponse.Body
Since RemoveChain is an idempotent operation, then the only indicator that
operation could not be performed is an error returning to a client.
<!-- end messages -->
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [container/service.proto](#container/service.proto)
- Services
- [ContainerService](#neo.fs.v2.container.ContainerService)
- Messages
- [DeleteRequest](#neo.fs.v2.container.DeleteRequest)
- [DeleteRequest.Body](#neo.fs.v2.container.DeleteRequest.Body)
- [DeleteResponse](#neo.fs.v2.container.DeleteResponse)
- [DeleteResponse.Body](#neo.fs.v2.container.DeleteResponse.Body)
- [GetRequest](#neo.fs.v2.container.GetRequest)
- [GetRequest.Body](#neo.fs.v2.container.GetRequest.Body)
- [GetResponse](#neo.fs.v2.container.GetResponse)
- [GetResponse.Body](#neo.fs.v2.container.GetResponse.Body)
- [ListRequest](#neo.fs.v2.container.ListRequest)
- [ListRequest.Body](#neo.fs.v2.container.ListRequest.Body)
- [ListResponse](#neo.fs.v2.container.ListResponse)
- [ListResponse.Body](#neo.fs.v2.container.ListResponse.Body)
- [PutRequest](#neo.fs.v2.container.PutRequest)
- [PutRequest.Body](#neo.fs.v2.container.PutRequest.Body)
- [PutResponse](#neo.fs.v2.container.PutResponse)
- [PutResponse.Body](#neo.fs.v2.container.PutResponse.Body)
- [container/types.proto](#container/types.proto)
- Messages
- [Container](#neo.fs.v2.container.Container)
- [Container.Attribute](#neo.fs.v2.container.Container.Attribute)
- [Scalar Value Types](#scalar-value-types)
<a name="container/service.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## container/service.proto
<a name="neo.fs.v2.container.ContainerService"></a>
### Service "neo.fs.v2.container.ContainerService"
`ContainerService` provides API to interact with `Container` smart contract
in FrostFS sidechain via other FrostFS nodes. All of those actions can be
done equivalently by directly issuing transactions and RPC calls to sidechain
nodes.
```
rpc Put(PutRequest) returns (PutResponse);
rpc Delete(DeleteRequest) returns (DeleteResponse);
rpc Get(GetRequest) returns (GetResponse);
rpc List(ListRequest) returns (ListResponse);
```
#### Method Put
`Put` invokes `Container` smart contract's `Put` method and returns
response immediately. After a new block is issued in sidechain, request is
verified by Inner Ring nodes. After one more block in sidechain, the
container is added into smart contract storage.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
request to save the container has been sent to the sidechain;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
container create access denied.
| Name | Input | Output |
| ---- | ----- | ------ |
| Put | [PutRequest](#neo.fs.v2.container.PutRequest) | [PutResponse](#neo.fs.v2.container.PutResponse) |
#### Method Delete
`Delete` invokes `Container` smart contract's `Delete` method and returns
response immediately. After a new block is issued in sidechain, request is
verified by Inner Ring nodes. After one more block in sidechain, the
container is added into smart contract storage.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
request to remove the container has been sent to the sidechain;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
container delete access denied.
| Name | Input | Output |
| ---- | ----- | ------ |
| Delete | [DeleteRequest](#neo.fs.v2.container.DeleteRequest) | [DeleteResponse](#neo.fs.v2.container.DeleteResponse) |
#### Method Get
Returns container structure from `Container` smart contract storage.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
container has been successfully read;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_NOT_FOUND** (3072, SECTION_CONTAINER): \
requested container not found;
- **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
access to container is denied.
| Name | Input | Output |
| ---- | ----- | ------ |
| Get | [GetRequest](#neo.fs.v2.container.GetRequest) | [GetResponse](#neo.fs.v2.container.GetResponse) |
#### Method List
Returns all owner's containers from 'Container` smart contract' storage.
Statuses:
- **OK** (0, SECTION_SUCCESS): \
container list has been successfully read;
- Common failures (SECTION_FAILURE_COMMON);
- **CONTAINER_ACCESS_DENIED** (3074, SECTION_CONTAINER): \
container list access denied.
| Name | Input | Output |
| ---- | ----- | ------ |
| List | [ListRequest](#neo.fs.v2.container.ListRequest) | [ListResponse](#neo.fs.v2.container.ListResponse) |
<!-- end services -->
<a name="neo.fs.v2.container.DeleteRequest"></a>
### Message DeleteRequest
Container removal request
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [DeleteRequest.Body](#neo.fs.v2.container.DeleteRequest.Body) | | Body of container delete request message. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.DeleteRequest.Body"></a>
### Message DeleteRequest.Body
Container removal request body has signed `ContainerID` as a proof of
the container owner's intent. The signature will be verified by `Container`
smart contract, so signing algorithm must be supported by NeoVM.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Identifier of the container to delete from FrostFS |
| signature | [neo.fs.v2.refs.SignatureRFC6979](#neo.fs.v2.refs.SignatureRFC6979) | | `ContainerID` signed with the container owner's key according to RFC-6979. |
<a name="neo.fs.v2.container.DeleteResponse"></a>
### Message DeleteResponse
`DeleteResponse` has an empty body because delete operation is asynchronous
and done via consensus in Inner Ring nodes.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [DeleteResponse.Body](#neo.fs.v2.container.DeleteResponse.Body) | | Body of container delete response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.DeleteResponse.Body"></a>
### Message DeleteResponse.Body
`DeleteResponse` has an empty body because delete operation is asynchronous
and done via consensus in Inner Ring nodes.
<a name="neo.fs.v2.container.GetRequest"></a>
### Message GetRequest
Get container structure
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [GetRequest.Body](#neo.fs.v2.container.GetRequest.Body) | | Body of container get request message. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.GetRequest.Body"></a>
### Message GetRequest.Body
Get container structure request body.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Identifier of the container to get |
<a name="neo.fs.v2.container.GetResponse"></a>
### Message GetResponse
Get container structure
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [GetResponse.Body](#neo.fs.v2.container.GetResponse.Body) | | Body of container get response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.GetResponse.Body"></a>
### Message GetResponse.Body
Get container response body does not have container structure signature. It
has been already verified upon container creation.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container | [Container](#neo.fs.v2.container.Container) | | Requested container structure |
| signature | [neo.fs.v2.refs.SignatureRFC6979](#neo.fs.v2.refs.SignatureRFC6979) | | Signature of a stable-marshalled container according to RFC-6979. |
| session_token | [neo.fs.v2.session.SessionToken](#neo.fs.v2.session.SessionToken) | | Session token if the container has been created within the session |
<a name="neo.fs.v2.container.ListRequest"></a>
### Message ListRequest
List containers
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [ListRequest.Body](#neo.fs.v2.container.ListRequest.Body) | | Body of list containers request message |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.ListRequest.Body"></a>
### Message ListRequest.Body
List containers request body.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Identifier of the container owner |
<a name="neo.fs.v2.container.ListResponse"></a>
### Message ListResponse
List containers
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [ListResponse.Body](#neo.fs.v2.container.ListResponse.Body) | | Body of list containers response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.ListResponse.Body"></a>
### Message ListResponse.Body
List containers response body.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container_ids | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | repeated | List of `ContainerID`s belonging to the requested `OwnerID` |
<a name="neo.fs.v2.container.PutRequest"></a>
### Message PutRequest
New FrostFS Container creation request
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [PutRequest.Body](#neo.fs.v2.container.PutRequest.Body) | | Body of container put request message. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.PutRequest.Body"></a>
### Message PutRequest.Body
Container creation request has container structure's signature as a
separate field. It's not stored in sidechain, just verified on container
creation by `Container` smart contract. `ContainerID` is a SHA256 hash of
the stable-marshalled container strucutre, hence there is no need for
additional signature checks.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container | [Container](#neo.fs.v2.container.Container) | | Container structure to register in FrostFS |
| signature | [neo.fs.v2.refs.SignatureRFC6979](#neo.fs.v2.refs.SignatureRFC6979) | | Signature of a stable-marshalled container according to RFC-6979. |
<a name="neo.fs.v2.container.PutResponse"></a>
### Message PutResponse
New FrostFS Container creation response
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [PutResponse.Body](#neo.fs.v2.container.PutResponse.Body) | | Body of container put response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.container.PutResponse.Body"></a>
### Message PutResponse.Body
Container put response body contains information about the newly registered
container as seen by `Container` smart contract. `ContainerID` can be
calculated beforehand from the container structure and compared to the one
returned here to make sure everything has been done as expected.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Unique identifier of the newly created container |
<!-- end messages -->
<!-- end enums -->
<a name="container/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## container/types.proto
<!-- end services -->
<a name="neo.fs.v2.container.Container"></a>
### Message Container
Container is a structure that defines object placement behaviour. Objects can
be stored only within containers. They define placement rule, attributes and
access control information. An ID of a container is a 32 byte long SHA256
hash of stable-marshalled container message.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Container format version. Effectively, the version of API library used to create the container. |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Identifier of the container owner |
| nonce | [bytes](#bytes) | | Nonce is a 16 byte UUIDv4, used to avoid collisions of `ContainerID`s |
| basic_acl | [uint32](#uint32) | | `BasicACL` contains access control rules for the owner, system and others groups, as well as permission bits for `BearerToken` and `Extended ACL` |
| attributes | [Container.Attribute](#neo.fs.v2.container.Container.Attribute) | repeated | Attributes represent immutable container's meta data |
| placement_policy | [neo.fs.v2.netmap.PlacementPolicy](#neo.fs.v2.netmap.PlacementPolicy) | | Placement policy for the object inside the container |
<a name="neo.fs.v2.container.Container.Attribute"></a>
### Message Container.Attribute
`Attribute` is a user-defined Key-Value metadata pair attached to the
container. Container attributes are immutable. They are set at the moment
of container creation and can never be added or updated.
Key name must be a container-unique valid UTF-8 string. Value can't be
empty. Containers with duplicated attribute names or attributes with empty
values will be considered invalid.
There are some "well-known" attributes affecting system behaviour:
* [ __SYSTEM__NAME ] \
(`__NEOFS__NAME` is deprecated) \
String of a human-friendly container name registered as a domain in
NNS contract.
* [ __SYSTEM__ZONE ] \
(`__NEOFS__ZONE` is deprecated) \
String of a zone for `__SYSTEM__NAME` (`__NEOFS__NAME` is deprecated).
Used as a TLD of a domain name in NNS contract. If no zone is specified,
use default zone: `container`.
* [ __SYSTEM__DISABLE_HOMOMORPHIC_HASHING ] \
(`__NEOFS__DISABLE_HOMOMORPHIC_HASHING` is deprecated) \
Disables homomorphic hashing for the container if the value equals "true"
string. Any other values are interpreted as missing attribute. Container
could be accepted in a FrostFS network only if the global network hashing
configuration value corresponds with that attribute's value. After
container inclusion, network setting is ignored.
And some well-known attributes used by applications only:
* Name \
Human-friendly name
* Timestamp \
User-defined local time of container creation in Unix Timestamp format
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [string](#string) | | Attribute name key |
| value | [string](#string) | | Attribute value |
<!-- end messages -->
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [lock/types.proto](#lock/types.proto)
- Messages
- [Lock](#neo.fs.v2.lock.Lock)
- [Scalar Value Types](#scalar-value-types)
<a name="lock/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## lock/types.proto
<!-- end services -->
<a name="neo.fs.v2.lock.Lock"></a>
### Message Lock
Lock objects protects a list of objects from being deleted. The lifetime of a
lock object is limited similar to regular objects in
`__SYSTEM__EXPIRATION_EPOCH` (`__NEOFS__EXPIRATION_EPOCH` is deprecated)
attribute. Lock object MUST have expiration epoch. It is impossible to delete
a lock object via ObjectService.Delete RPC call.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| members | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | repeated | List of objects to lock. Must not be empty or carry empty IDs. All members must be of the `REGULAR` type. |
<!-- end messages -->
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [netmap/service.proto](#netmap/service.proto)
- Services
- [NetmapService](#neo.fs.v2.netmap.NetmapService)
- Messages
- [LocalNodeInfoRequest](#neo.fs.v2.netmap.LocalNodeInfoRequest)
- [LocalNodeInfoRequest.Body](#neo.fs.v2.netmap.LocalNodeInfoRequest.Body)
- [LocalNodeInfoResponse](#neo.fs.v2.netmap.LocalNodeInfoResponse)
- [LocalNodeInfoResponse.Body](#neo.fs.v2.netmap.LocalNodeInfoResponse.Body)
- [NetmapSnapshotRequest](#neo.fs.v2.netmap.NetmapSnapshotRequest)
- [NetmapSnapshotRequest.Body](#neo.fs.v2.netmap.NetmapSnapshotRequest.Body)
- [NetmapSnapshotResponse](#neo.fs.v2.netmap.NetmapSnapshotResponse)
- [NetmapSnapshotResponse.Body](#neo.fs.v2.netmap.NetmapSnapshotResponse.Body)
- [NetworkInfoRequest](#neo.fs.v2.netmap.NetworkInfoRequest)
- [NetworkInfoRequest.Body](#neo.fs.v2.netmap.NetworkInfoRequest.Body)
- [NetworkInfoResponse](#neo.fs.v2.netmap.NetworkInfoResponse)
- [NetworkInfoResponse.Body](#neo.fs.v2.netmap.NetworkInfoResponse.Body)
- [netmap/types.proto](#netmap/types.proto)
- Messages
- [Filter](#neo.fs.v2.netmap.Filter)
- [Netmap](#neo.fs.v2.netmap.Netmap)
- [NetworkConfig](#neo.fs.v2.netmap.NetworkConfig)
- [NetworkConfig.Parameter](#neo.fs.v2.netmap.NetworkConfig.Parameter)
- [NetworkInfo](#neo.fs.v2.netmap.NetworkInfo)
- [NodeInfo](#neo.fs.v2.netmap.NodeInfo)
- [NodeInfo.Attribute](#neo.fs.v2.netmap.NodeInfo.Attribute)
- [PlacementPolicy](#neo.fs.v2.netmap.PlacementPolicy)
- [Replica](#neo.fs.v2.netmap.Replica)
- [Selector](#neo.fs.v2.netmap.Selector)
- [Scalar Value Types](#scalar-value-types)
<a name="netmap/service.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## netmap/service.proto
<a name="neo.fs.v2.netmap.NetmapService"></a>
### Service "neo.fs.v2.netmap.NetmapService"
`NetmapService` provides methods to work with `Network Map` and the
information required to build it. The resulting `Network Map` is stored in
sidechain `Netmap` smart contract, while related information can be obtained
from other FrostFS nodes.
```
rpc LocalNodeInfo(LocalNodeInfoRequest) returns (LocalNodeInfoResponse);
rpc NetworkInfo(NetworkInfoRequest) returns (NetworkInfoResponse);
rpc NetmapSnapshot(NetmapSnapshotRequest) returns (NetmapSnapshotResponse);
```
#### Method LocalNodeInfo
Get NodeInfo structure from the particular node directly.
Node information can be taken from `Netmap` smart contract. In some cases,
though, one may want to get recent information directly or to talk to the
node not yet present in the `Network Map` to find out what API version can
be used for further communication. This can be also used to check if a node
is up and running.
Statuses:
- **OK** (0, SECTION_SUCCESS):
information about the server has been successfully read;
- Common failures (SECTION_FAILURE_COMMON).
| Name | Input | Output |
| ---- | ----- | ------ |
| LocalNodeInfo | [LocalNodeInfoRequest](#neo.fs.v2.netmap.LocalNodeInfoRequest) | [LocalNodeInfoResponse](#neo.fs.v2.netmap.LocalNodeInfoResponse) |
#### Method NetworkInfo
Read recent information about the FrostFS network.
Statuses:
- **OK** (0, SECTION_SUCCESS):
information about the current network state has been successfully read;
- Common failures (SECTION_FAILURE_COMMON).
| Name | Input | Output |
| ---- | ----- | ------ |
| NetworkInfo | [NetworkInfoRequest](#neo.fs.v2.netmap.NetworkInfoRequest) | [NetworkInfoResponse](#neo.fs.v2.netmap.NetworkInfoResponse) |
#### Method NetmapSnapshot
Returns network map snapshot of the current FrostFS epoch.
Statuses:
- **OK** (0, SECTION_SUCCESS):
information about the current network map has been successfully read;
- Common failures (SECTION_FAILURE_COMMON).
| Name | Input | Output |
| ---- | ----- | ------ |
| NetmapSnapshot | [NetmapSnapshotRequest](#neo.fs.v2.netmap.NetmapSnapshotRequest) | [NetmapSnapshotResponse](#neo.fs.v2.netmap.NetmapSnapshotResponse) |
<!-- end services -->
<a name="neo.fs.v2.netmap.LocalNodeInfoRequest"></a>
### Message LocalNodeInfoRequest
Get NodeInfo structure directly from a particular node
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [LocalNodeInfoRequest.Body](#neo.fs.v2.netmap.LocalNodeInfoRequest.Body) | | Body of the LocalNodeInfo request message |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.LocalNodeInfoRequest.Body"></a>
### Message LocalNodeInfoRequest.Body
LocalNodeInfo request body is empty.
<a name="neo.fs.v2.netmap.LocalNodeInfoResponse"></a>
### Message LocalNodeInfoResponse
Local Node Info, including API Version in use
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [LocalNodeInfoResponse.Body](#neo.fs.v2.netmap.LocalNodeInfoResponse.Body) | | Body of the balance response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect response execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.LocalNodeInfoResponse.Body"></a>
### Message LocalNodeInfoResponse.Body
Local Node Info, including API Version in use.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Latest FrostFS API version in use |
| node_info | [NodeInfo](#neo.fs.v2.netmap.NodeInfo) | | NodeInfo structure with recent information from node itself |
<a name="neo.fs.v2.netmap.NetmapSnapshotRequest"></a>
### Message NetmapSnapshotRequest
Get netmap snapshot request
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [NetmapSnapshotRequest.Body](#neo.fs.v2.netmap.NetmapSnapshotRequest.Body) | | Body of get netmap snapshot request message. |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.NetmapSnapshotRequest.Body"></a>
### Message NetmapSnapshotRequest.Body
Get netmap snapshot request body.
<a name="neo.fs.v2.netmap.NetmapSnapshotResponse"></a>
### Message NetmapSnapshotResponse
Response with current netmap snapshot
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [NetmapSnapshotResponse.Body](#neo.fs.v2.netmap.NetmapSnapshotResponse.Body) | | Body of get netmap snapshot response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect response execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.NetmapSnapshotResponse.Body"></a>
### Message NetmapSnapshotResponse.Body
Get netmap snapshot response body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| netmap | [Netmap](#neo.fs.v2.netmap.Netmap) | | Structure of the requested network map. |
<a name="neo.fs.v2.netmap.NetworkInfoRequest"></a>
### Message NetworkInfoRequest
Get NetworkInfo structure with the network view from a particular node.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [NetworkInfoRequest.Body](#neo.fs.v2.netmap.NetworkInfoRequest.Body) | | Body of the NetworkInfo request message |
| meta_header | [neo.fs.v2.session.RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [neo.fs.v2.session.RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.NetworkInfoRequest.Body"></a>
### Message NetworkInfoRequest.Body
NetworkInfo request body is empty.
<a name="neo.fs.v2.netmap.NetworkInfoResponse"></a>
### Message NetworkInfoResponse
Response with NetworkInfo structure including current epoch and
sidechain magic number.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [NetworkInfoResponse.Body](#neo.fs.v2.netmap.NetworkInfoResponse.Body) | | Body of the NetworkInfo response message. |
| meta_header | [neo.fs.v2.session.ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect response execution. |
| verify_header | [neo.fs.v2.session.ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.netmap.NetworkInfoResponse.Body"></a>
### Message NetworkInfoResponse.Body
Information about the network.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| network_info | [NetworkInfo](#neo.fs.v2.netmap.NetworkInfo) | | NetworkInfo structure with recent information. |
<!-- end messages -->
<!-- end enums -->
<a name="netmap/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## netmap/types.proto
<!-- end services -->
<a name="neo.fs.v2.netmap.Filter"></a>
### Message Filter
This filter will return the subset of nodes from `NetworkMap` or another
filter's results that will satisfy filter's conditions.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | Name of the filter or a reference to a named filter. '*' means application to the whole unfiltered NetworkMap. At top level it's used as a filter name. At lower levels it's considered to be a reference to another named filter |
| key | [string](#string) | | Key to filter |
| op | [Operation](#neo.fs.v2.netmap.Operation) | | Filtering operation |
| value | [string](#string) | | Value to match |
| filters | [Filter](#neo.fs.v2.netmap.Filter) | repeated | List of inner filters. Top level operation will be applied to the whole list. |
<a name="neo.fs.v2.netmap.Netmap"></a>
### Message Netmap
Network map structure
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| epoch | [uint64](#uint64) | | Network map revision number. |
| nodes | [NodeInfo](#neo.fs.v2.netmap.NodeInfo) | repeated | Nodes presented in network. |
<a name="neo.fs.v2.netmap.NetworkConfig"></a>
### Message NetworkConfig
FrostFS network configuration
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| parameters | [NetworkConfig.Parameter](#neo.fs.v2.netmap.NetworkConfig.Parameter) | repeated | List of parameter values |
<a name="neo.fs.v2.netmap.NetworkConfig.Parameter"></a>
### Message NetworkConfig.Parameter
Single configuration parameter. Key MUST be network-unique.
System parameters:
- **AuditFee** \
Fee paid by the storage group owner to the Inner Ring member.
Value: little-endian integer. Default: 0.
- **BasicIncomeRate** \
Cost of storing one gigabyte of data for a period of one epoch. Paid by
container owner to container nodes.
Value: little-endian integer. Default: 0.
- **ContainerAliasFee** \
Fee paid for named container's creation by the container owner.
Value: little-endian integer. Default: 0.
- **ContainerFee** \
Fee paid for container creation by the container owner.
Value: little-endian integer. Default: 0.
- **EpochDuration** \
FrostFS epoch duration measured in Sidechain blocks.
Value: little-endian integer. Default: 0.
- **HomomorphicHashingDisabled** \
Flag of disabling the homomorphic hashing of objects' payload.
Value: true if any byte != 0. Default: false.
- **InnerRingCandidateFee** \
Fee for entrance to the Inner Ring paid by the candidate.
Value: little-endian integer. Default: 0.
- **MaintenanceModeAllowed** \
Flag allowing setting the MAINTENANCE state to storage nodes.
Value: true if any byte != 0. Default: false.
- **MaxObjectSize** \
Maximum size of physically stored FrostFS object measured in bytes.
Value: little-endian integer. Default: 0.
This value refers to the maximum size of a **physically** stored object
in FrostFS. However, from a user's perspective, the **logical** size of a
stored object can be significantly larger. The relationship between the
physical and logical object sizes is governed by the following formula
```math
\mathrm{Stored\ Object\ Size} \le
\frac{
\left(\mathrm{Max\ Object\ Size}\right)^2
}{
\mathrm{Object\ ID\ Size}
}
```
This arises from the fact that a tombstone, also being an object, stores
the IDs of inhumed objects and cannot be divided into smaller objects,
thus having an upper limit for its size.
For example, if:
* Max Object Size Size = 64 MiB;
* Object ID Size = 32 B;
then:
```math
\mathrm{Stored\ Object\ Size} \le
\frac{\left(64\ \mathrm{MiB}\right)^2}{32\ \mathrm{B}} =
\frac{2^{52}}{2^5}\ \mathrm{B} =
2^{47}\ \mathrm{B} =
128\ \mathrm{TiB}
```
- **WithdrawFee** \
Fee paid for withdrawal of funds paid by the account owner.
Value: little-endian integer. Default: 0.
- **MaxECDataCount** \
Maximum number of data shards for EC placement policy.
Value: little-endian integer. Default: 0.
- **MaxECParityCount** \
Maximum number of parity shards for EC placement policy.
Value: little-endian integer. Default: 0.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [bytes](#bytes) | | Parameter key. UTF-8 encoded string |
| value | [bytes](#bytes) | | Parameter value |
<a name="neo.fs.v2.netmap.NetworkInfo"></a>
### Message NetworkInfo
Information about FrostFS network
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| current_epoch | [uint64](#uint64) | | Number of the current epoch in the FrostFS network |
| magic_number | [uint64](#uint64) | | Magic number of the sidechain of the FrostFS network |
| ms_per_block | [int64](#int64) | | MillisecondsPerBlock network parameter of the sidechain of the FrostFS network |
| network_config | [NetworkConfig](#neo.fs.v2.netmap.NetworkConfig) | | FrostFS network configuration |
<a name="neo.fs.v2.netmap.NodeInfo"></a>
### Message NodeInfo
FrostFS node description
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| public_key | [bytes](#bytes) | | Public key of the FrostFS node in a binary format |
| addresses | [string](#string) | repeated | Ways to connect to a node |
| attributes | [NodeInfo.Attribute](#neo.fs.v2.netmap.NodeInfo.Attribute) | repeated | Carries list of the FrostFS node attributes in a key-value form. Key name must be a node-unique valid UTF-8 string. Value can't be empty. NodeInfo structures with duplicated attribute names or attributes with empty values will be considered invalid. |
| state | [NodeInfo.State](#neo.fs.v2.netmap.NodeInfo.State) | | Carries state of the FrostFS node |
<a name="neo.fs.v2.netmap.NodeInfo.Attribute"></a>
### Message NodeInfo.Attribute
Administrator-defined Attributes of the FrostFS Storage Node.
`Attribute` is a Key-Value metadata pair. Key name must be a valid UTF-8
string. Value can't be empty.
Attributes can be constructed into a chain of attributes: any attribute can
have a parent attribute and a child attribute (except the first and the
last one). A string representation of the chain of attributes in FrostFS
Storage Node configuration uses ":" and "/" symbols, e.g.:
`FrostFS_NODE_ATTRIBUTE_1=key1:val1/key2:val2`
Therefore the string attribute representation in the Node configuration
must use "\:", "\/" and "\\" escaped symbols if any of them appears in an
attribute's key or value.
Node's attributes are mostly used during Storage Policy evaluation to
calculate object's placement and find a set of nodes satisfying policy
requirements. There are some "well-known" node attributes common to all the
Storage Nodes in the network and used implicitly with default values if not
explicitly set:
* Capacity \
Total available disk space in Gigabytes.
* Price \
Price in GAS tokens for storing one GB of data during one Epoch. In node
attributes it's a string presenting floating point number with comma or
point delimiter for decimal part. In the Network Map it will be saved as
64-bit unsigned integer representing number of minimal token fractions.
* UN-LOCODE \
Node's geographic location in
[UN/LOCODE](https://www.unece.org/cefact/codesfortrade/codes_index.html)
format approximated to the nearest point defined in the standard.
* CountryCode \
Country code in
[ISO 3166-1_alpha-2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)
format. Calculated automatically from `UN-LOCODE` attribute.
* Country \
Country short name in English, as defined in
[ISO-3166](https://www.iso.org/obp/ui/#search). Calculated automatically
from `UN-LOCODE` attribute.
* Location \
Place names are given, whenever possible, in their national language
versions as expressed in the Roman alphabet using the 26 characters of
the character set adopted for international trade data interchange,
written without diacritics . Calculated automatically from `UN-LOCODE`
attribute.
* SubDivCode \
Country's administrative subdivision where node is located. Calculated
automatically from `UN-LOCODE` attribute based on `SubDiv` field.
Presented in [ISO 3166-2](https://en.wikipedia.org/wiki/ISO_3166-2)
format.
* SubDiv \
Country's administrative subdivision name, as defined in
[ISO 3166-2](https://en.wikipedia.org/wiki/ISO_3166-2). Calculated
automatically from `UN-LOCODE` attribute.
* Continent \
Node's continent name according to the [Seven-Continent
model](https://en.wikipedia.org/wiki/Continent#Number). Calculated
automatically from `UN-LOCODE` attribute.
* ExternalAddr
Node's preferred way for communications with external clients.
Clients SHOULD use these addresses if possible.
Must contain a comma-separated list of multi-addresses.
For detailed description of each well-known attribute please see the
corresponding section in FrostFS Technical Specification.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [string](#string) | | Key of the node attribute |
| value | [string](#string) | | Value of the node attribute |
| parents | [string](#string) | repeated | Parent keys, if any. For example for `City` it could be `Region` and `Country`. |
<a name="neo.fs.v2.netmap.PlacementPolicy"></a>
### Message PlacementPolicy
Set of rules to select a subset of nodes from `NetworkMap` able to store
container's objects. The format is simple enough to transpile from different
storage policy definition languages.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| replicas | [Replica](#neo.fs.v2.netmap.Replica) | repeated | Rules to set number of object replicas and place each one into a named bucket |
| container_backup_factor | [uint32](#uint32) | | Container backup factor controls how deep FrostFS will search for nodes alternatives to include into container's nodes subset |
| selectors | [Selector](#neo.fs.v2.netmap.Selector) | repeated | Set of Selectors to form the container's nodes subset |
| filters | [Filter](#neo.fs.v2.netmap.Filter) | repeated | List of named filters to reference in selectors |
| unique | [bool](#bool) | | Unique flag defines non-overlapping application for replicas |
<a name="neo.fs.v2.netmap.Replica"></a>
### Message Replica
Number of object replicas in a set of nodes from the defined selector. If no
selector set, the root bucket containing all possible nodes will be used by
default.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| count | [uint32](#uint32) | | How many object replicas to put |
| selector | [string](#string) | | Named selector bucket to put replicas |
| ec_data_count | [uint32](#uint32) | | Data shards count |
| ec_parity_count | [uint32](#uint32) | | Parity shards count |
<a name="neo.fs.v2.netmap.Selector"></a>
### Message Selector
Selector chooses a number of nodes from the bucket taking the nearest nodes
to the provided `ContainerID` by hash distance.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | Selector name to reference in object placement section |
| count | [uint32](#uint32) | | How many nodes to select from the bucket |
| clause | [Clause](#neo.fs.v2.netmap.Clause) | | Selector modifier showing how to form a bucket |
| attribute | [string](#string) | | Bucket attribute to select from |
| filter | [string](#string) | | Filter reference to select from |
<!-- end messages -->
<a name="neo.fs.v2.netmap.Clause"></a>
### Clause
Selector modifier shows how the node set will be formed. By default selector
just groups nodes into a bucket by attribute, selecting nodes only by their
hash distance.
| Name | Number | Description |
| ---- | ------ | ----------- |
| CLAUSE_UNSPECIFIED | 0 | No modifier defined. Nodes will be selected from the bucket randomly |
| SAME | 1 | SAME will select only nodes having the same value of bucket attribute |
| DISTINCT | 2 | DISTINCT will select nodes having different values of bucket attribute |
<a name="neo.fs.v2.netmap.NodeInfo.State"></a>
### NodeInfo.State
Represents the enumeration of various states of the FrostFS node.
| Name | Number | Description |
| ---- | ------ | ----------- |
| UNSPECIFIED | 0 | Unknown state |
| ONLINE | 1 | Active state in the network |
| OFFLINE | 2 | Network unavailable state |
| MAINTENANCE | 3 | Maintenance state |
<a name="neo.fs.v2.netmap.Operation"></a>
### Operation
Operations on filters
| Name | Number | Description |
| ---- | ------ | ----------- |
| OPERATION_UNSPECIFIED | 0 | No Operation defined |
| EQ | 1 | Equal |
| NE | 2 | Not Equal |
| GT | 3 | Greater then |
| GE | 4 | Greater or equal |
| LT | 5 | Less then |
| LE | 6 | Less or equal |
| OR | 7 | Logical OR |
| AND | 8 | Logical AND |
| NOT | 9 | Logical negation |
| LIKE | 10 | Matches pattern |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [refs/types.proto](#refs/types.proto)
- Messages
- [Address](#neo.fs.v2.refs.Address)
- [Checksum](#neo.fs.v2.refs.Checksum)
- [ContainerID](#neo.fs.v2.refs.ContainerID)
- [ObjectID](#neo.fs.v2.refs.ObjectID)
- [OwnerID](#neo.fs.v2.refs.OwnerID)
- [Signature](#neo.fs.v2.refs.Signature)
- [SignatureRFC6979](#neo.fs.v2.refs.SignatureRFC6979)
- [Version](#neo.fs.v2.refs.Version)
- [Scalar Value Types](#scalar-value-types)
<a name="refs/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## refs/types.proto
<!-- end services -->
<a name="neo.fs.v2.refs.Address"></a>
### Message Address
Objects in FrostFS are addressed by their ContainerID and ObjectID.
String presentation of `Address` is a concatenation of string encoded
`ContainerID` and `ObjectID` delimited by '/' character.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container_id | [ContainerID](#neo.fs.v2.refs.ContainerID) | | Container identifier |
| object_id | [ObjectID](#neo.fs.v2.refs.ObjectID) | | Object identifier |
<a name="neo.fs.v2.refs.Checksum"></a>
### Message Checksum
Checksum message.
Depending on checksum algorithm type, the string presentation may vary:
* TZ \
Hex encoded string without `0x` prefix
* SHA256 \
Hex encoded string without `0x` prefix
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| type | [ChecksumType](#neo.fs.v2.refs.ChecksumType) | | Checksum algorithm type |
| sum | [bytes](#bytes) | | Checksum itself |
<a name="neo.fs.v2.refs.ContainerID"></a>
### Message ContainerID
FrostFS container identifier. Container structures are immutable and
content-addressed.
`ContainerID` is a 32 byte long
[SHA256](https://csrc.nist.gov/publications/detail/fips/180/4/final) hash of
stable-marshalled container message.
String presentation is a
[base58](https://tools.ietf.org/html/draft-msporny-base58-02) encoded string.
JSON value will be data encoded as a string using standard base64
encoding with paddings. Either
[standard](https://tools.ietf.org/html/rfc4648#section-4) or
[URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
with/without paddings are accepted.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| value | [bytes](#bytes) | | Container identifier in a binary format. |
<a name="neo.fs.v2.refs.ObjectID"></a>
### Message ObjectID
FrostFS Object unique identifier. Objects are immutable and
content-addressed. It means `ObjectID` will change if the `header` or the
`payload` changes.
`ObjectID` is a 32 byte long
[SHA256](https://csrc.nist.gov/publications/detail/fips/180/4/final) hash of
the object's `header` field, which, in it's turn, contains the hash of the
object's payload.
String presentation is a
[base58](https://tools.ietf.org/html/draft-msporny-base58-02) encoded string.
JSON value will be data encoded as a string using standard base64
encoding with paddings. Either
[standard](https://tools.ietf.org/html/rfc4648#section-4) or
[URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
with/without paddings are accepted.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| value | [bytes](#bytes) | | Object identifier in a binary format |
<a name="neo.fs.v2.refs.OwnerID"></a>
### Message OwnerID
`OwnerID` is a derivative of a user's main public key. The transformation
algorithm is the same as for Neo3 wallet addresses. Neo3 wallet address can
be directly used as `OwnerID`.
`OwnerID` is a 25 bytes sequence starting with Neo version prefix byte
followed by 20 bytes of ScrptHash and 4 bytes of checksum.
String presentation is a [Base58
Check](https://en.bitcoin.it/wiki/Base58Check_encoding) Encoded string.
JSON value will be data encoded as a string using standard base64
encoding with paddings. Either
[standard](https://tools.ietf.org/html/rfc4648#section-4) or
[URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
with/without paddings are accepted.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| value | [bytes](#bytes) | | Identifier of the container owner in a binary format |
<a name="neo.fs.v2.refs.Signature"></a>
### Message Signature
Signature of something in FrostFS.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [bytes](#bytes) | | Public key used for signing |
| sign | [bytes](#bytes) | | Signature |
| scheme | [SignatureScheme](#neo.fs.v2.refs.SignatureScheme) | | Scheme contains digital signature scheme identifier |
<a name="neo.fs.v2.refs.SignatureRFC6979"></a>
### Message SignatureRFC6979
RFC 6979 signature.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [bytes](#bytes) | | Public key used for signing |
| sign | [bytes](#bytes) | | Deterministic ECDSA with SHA-256 hashing |
<a name="neo.fs.v2.refs.Version"></a>
### Message Version
API version used by a node.
String presentation is a Semantic Versioning 2.0.0 compatible version string
with 'v' prefix. i.e. `vX.Y`, where `X` is the major number, `Y` is the minor
number.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| major | [uint32](#uint32) | | Major API version |
| minor | [uint32](#uint32) | | Minor API version |
<!-- end messages -->
<a name="neo.fs.v2.refs.ChecksumType"></a>
### ChecksumType
Checksum algorithm type.
| Name | Number | Description |
| ---- | ------ | ----------- |
| CHECKSUM_TYPE_UNSPECIFIED | 0 | Unknown. Not used |
| TZ | 1 | Tillich-Zemor homomorphic hash function |
| SHA256 | 2 | SHA-256 |
<a name="neo.fs.v2.refs.SignatureScheme"></a>
### SignatureScheme
Signature scheme describes digital signing scheme used for (key, signature)
pair.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ECDSA_SHA512 | 0 | ECDSA with SHA-512 hashing (FIPS 186-3) |
| ECDSA_RFC6979_SHA256 | 1 | Deterministic ECDSA with SHA-256 hashing (RFC 6979) |
| ECDSA_RFC6979_SHA256_WALLET_CONNECT | 2 | Deterministic ECDSA with SHA-256 hashing using WalletConnect API. Here the algorithm is the same, but the message format differs. |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [session/service.proto](#session/service.proto)
- Services
- [SessionService](#neo.fs.v2.session.SessionService)
- Messages
- [CreateRequest](#neo.fs.v2.session.CreateRequest)
- [CreateRequest.Body](#neo.fs.v2.session.CreateRequest.Body)
- [CreateResponse](#neo.fs.v2.session.CreateResponse)
- [CreateResponse.Body](#neo.fs.v2.session.CreateResponse.Body)
- [session/types.proto](#session/types.proto)
- Messages
- [ContainerSessionContext](#neo.fs.v2.session.ContainerSessionContext)
- [ObjectSessionContext](#neo.fs.v2.session.ObjectSessionContext)
- [ObjectSessionContext.Target](#neo.fs.v2.session.ObjectSessionContext.Target)
- [RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader)
- [RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader)
- [ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader)
- [ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader)
- [SessionToken](#neo.fs.v2.session.SessionToken)
- [SessionToken.Body](#neo.fs.v2.session.SessionToken.Body)
- [SessionToken.Body.TokenLifetime](#neo.fs.v2.session.SessionToken.Body.TokenLifetime)
- [XHeader](#neo.fs.v2.session.XHeader)
- [Scalar Value Types](#scalar-value-types)
<a name="session/service.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## session/service.proto
<a name="neo.fs.v2.session.SessionService"></a>
### Service "neo.fs.v2.session.SessionService"
`SessionService` allows to establish a temporary trust relationship between
two peer nodes and generate a `SessionToken` as the proof of trust to be
attached in requests for further verification. Please see corresponding
section of FrostFS Technical Specification for details.
```
rpc Create(CreateRequest) returns (CreateResponse);
```
#### Method Create
Open a new session between two peers.
Statuses:
- **OK** (0, SECTION_SUCCESS):
session has been successfully opened;
- Common failures (SECTION_FAILURE_COMMON).
| Name | Input | Output |
| ---- | ----- | ------ |
| Create | [CreateRequest](#neo.fs.v2.session.CreateRequest) | [CreateResponse](#neo.fs.v2.session.CreateResponse) |
<!-- end services -->
<a name="neo.fs.v2.session.CreateRequest"></a>
### Message CreateRequest
Information necessary for opening a session.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [CreateRequest.Body](#neo.fs.v2.session.CreateRequest.Body) | | Body of a create session token request message. |
| meta_header | [RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | Carries request meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Carries request verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.session.CreateRequest.Body"></a>
### Message CreateRequest.Body
Session creation request body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Session initiating user's or node's key derived `OwnerID` |
| expiration | [uint64](#uint64) | | Session expiration `Epoch` |
<a name="neo.fs.v2.session.CreateResponse"></a>
### Message CreateResponse
Information about the opened session.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [CreateResponse.Body](#neo.fs.v2.session.CreateResponse.Body) | | Body of create session token response message. |
| meta_header | [ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | Carries response meta information. Header data is used only to regulate message transport and does not affect request execution. |
| verify_header | [ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Carries response verification information. This header is used to authenticate the nodes of the message route and check the correctness of transmission. |
<a name="neo.fs.v2.session.CreateResponse.Body"></a>
### Message CreateResponse.Body
Session creation response body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [bytes](#bytes) | | Identifier of a newly created session |
| session_key | [bytes](#bytes) | | Public key used for session |
<!-- end messages -->
<!-- end enums -->
<a name="session/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## session/types.proto
<!-- end services -->
<a name="neo.fs.v2.session.ContainerSessionContext"></a>
### Message ContainerSessionContext
Context information for Session Tokens related to ContainerService requests.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| verb | [ContainerSessionContext.Verb](#neo.fs.v2.session.ContainerSessionContext.Verb) | | Type of request for which the token is issued |
| wildcard | [bool](#bool) | | Spreads the action to all owner containers. If set, container_id field is ignored. |
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Particular container to which the action applies. Ignored if wildcard flag is set. |
<a name="neo.fs.v2.session.ObjectSessionContext"></a>
### Message ObjectSessionContext
Context information for Session Tokens related to ObjectService requests
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| verb | [ObjectSessionContext.Verb](#neo.fs.v2.session.ObjectSessionContext.Verb) | | Type of request for which the token is issued |
| target | [ObjectSessionContext.Target](#neo.fs.v2.session.ObjectSessionContext.Target) | | Object session target. MUST be correctly formed and set. If `objects` field is not empty, then the session applies only to these elements, otherwise, to all objects from the specified container. |
<a name="neo.fs.v2.session.ObjectSessionContext.Target"></a>
### Message ObjectSessionContext.Target
Carries objects involved in the object session.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| container | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Indicates which container the session is spread to. Field MUST be set and correct. |
| objects | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | repeated | Indicates which objects the session is spread to. Objects are expected to be stored in the FrostFS container referenced by `container` field. Each element MUST have correct format. |
<a name="neo.fs.v2.session.RequestMetaHeader"></a>
### Message RequestMetaHeader
Meta information attached to the request. When forwarded between peers,
request meta headers are folded in matryoshka style.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Peer's API version used |
| epoch | [uint64](#uint64) | | Peer's local epoch number. Set to 0 if unknown. |
| ttl | [uint32](#uint32) | | Maximum number of intermediate nodes in the request route |
| x_headers | [XHeader](#neo.fs.v2.session.XHeader) | repeated | Request X-Headers |
| session_token | [SessionToken](#neo.fs.v2.session.SessionToken) | | Session token within which the request is sent |
| bearer_token | [neo.fs.v2.acl.BearerToken](#neo.fs.v2.acl.BearerToken) | | `BearerToken` with eACL overrides for the request |
| origin | [RequestMetaHeader](#neo.fs.v2.session.RequestMetaHeader) | | `RequestMetaHeader` of the origin request |
| magic_number | [uint64](#uint64) | | FrostFS network magic. Must match the value for the network that the server belongs to. |
<a name="neo.fs.v2.session.RequestVerificationHeader"></a>
### Message RequestVerificationHeader
Verification info for the request signed by all intermediate nodes.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Request Body signature. Should be generated once by the request initiator. |
| meta_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Request Meta signature is added and signed by each intermediate node |
| origin_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signature of previous hops |
| origin | [RequestVerificationHeader](#neo.fs.v2.session.RequestVerificationHeader) | | Chain of previous hops signatures |
<a name="neo.fs.v2.session.ResponseMetaHeader"></a>
### Message ResponseMetaHeader
Information about the response
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Peer's API version used |
| epoch | [uint64](#uint64) | | Peer's local epoch number |
| ttl | [uint32](#uint32) | | Maximum number of intermediate nodes in the request route |
| x_headers | [XHeader](#neo.fs.v2.session.XHeader) | repeated | Response X-Headers |
| origin | [ResponseMetaHeader](#neo.fs.v2.session.ResponseMetaHeader) | | `ResponseMetaHeader` of the origin request |
| status | [neo.fs.v2.status.Status](#neo.fs.v2.status.Status) | | Status return |
<a name="neo.fs.v2.session.ResponseVerificationHeader"></a>
### Message ResponseVerificationHeader
Verification info for the response signed by all intermediate nodes
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Response Body signature. Should be generated once by an answering node. |
| meta_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Response Meta signature is added and signed by each intermediate node |
| origin_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signature of previous hops |
| origin | [ResponseVerificationHeader](#neo.fs.v2.session.ResponseVerificationHeader) | | Chain of previous hops signatures |
<a name="neo.fs.v2.session.SessionToken"></a>
### Message SessionToken
FrostFS Session Token.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| body | [SessionToken.Body](#neo.fs.v2.session.SessionToken.Body) | | Session Token contains the proof of trust between peers to be attached in requests for further verification. Please see corresponding section of FrostFS Technical Specification for details. |
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signature of `SessionToken` information |
<a name="neo.fs.v2.session.SessionToken.Body"></a>
### Message SessionToken.Body
Session Token body
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [bytes](#bytes) | | Token identifier is a valid UUIDv4 in binary form |
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Identifier of the session initiator |
| lifetime | [SessionToken.Body.TokenLifetime](#neo.fs.v2.session.SessionToken.Body.TokenLifetime) | | Lifetime of the session |
| session_key | [bytes](#bytes) | | Public key used in session |
| object | [ObjectSessionContext](#neo.fs.v2.session.ObjectSessionContext) | | ObjectService session context |
| container | [ContainerSessionContext](#neo.fs.v2.session.ContainerSessionContext) | | ContainerService session context |
<a name="neo.fs.v2.session.SessionToken.Body.TokenLifetime"></a>
### Message SessionToken.Body.TokenLifetime
Lifetime parameters of the token. Field names taken from rfc7519.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| exp | [uint64](#uint64) | | Expiration Epoch |
| nbf | [uint64](#uint64) | | Not valid before Epoch |
| iat | [uint64](#uint64) | | Issued at Epoch |
<a name="neo.fs.v2.session.XHeader"></a>
### Message XHeader
Extended headers for Request/Response. They may contain any user-defined
headers to be interpreted on application level.
Key name must be a unique valid UTF-8 string. Value can't be empty. Requests
or Responses with duplicated header names or headers with empty values will
be considered invalid.
There are some "well-known" headers starting with `__SYSTEM__` (`__NEOFS__`
is deprecated) prefix that affect system behaviour:
* [ __SYSTEM__NETMAP_EPOCH ] \
(`__NEOFS__NETMAP_EPOCH` is deprecated) \
Netmap epoch to use for object placement calculation. The `value` is string
encoded `uint64` in decimal presentation. If set to '0' or not set, the
current epoch only will be used.
* [ __SYSTEM__NETMAP_LOOKUP_DEPTH ] \
(`__NEOFS__NETMAP_LOOKUP_DEPTH` is deprecated) \
If object can't be found using current epoch's netmap, this header limits
how many past epochs the node can look up through. The `value` is string
encoded `uint64` in decimal presentation. If set to '0' or not set, only
the current epoch will be used.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| key | [string](#string) | | Key of the X-Header |
| value | [string](#string) | | Value of the X-Header |
<!-- end messages -->
<a name="neo.fs.v2.session.ContainerSessionContext.Verb"></a>
### ContainerSessionContext.Verb
Container request verbs
| Name | Number | Description |
| ---- | ------ | ----------- |
| VERB_UNSPECIFIED | 0 | Unknown verb |
| PUT | 1 | Refers to container.Put RPC call |
| DELETE | 2 | Refers to container.Delete RPC call |
| SETEACL | 3 | Refers to container.SetExtendedACL RPC call |
<a name="neo.fs.v2.session.ObjectSessionContext.Verb"></a>
### ObjectSessionContext.Verb
Object request verbs
| Name | Number | Description |
| ---- | ------ | ----------- |
| VERB_UNSPECIFIED | 0 | Unknown verb |
| PUT | 1 | Refers to object.Put RPC call |
| GET | 2 | Refers to object.Get RPC call |
| HEAD | 3 | Refers to object.Head RPC call |
| SEARCH | 4 | Refers to object.Search RPC call |
| DELETE | 5 | Refers to object.Delete RPC call |
| RANGE | 6 | Refers to object.GetRange RPC call |
| RANGEHASH | 7 | Refers to object.GetRangeHash RPC call |
| PATCH | 8 | Refers to object.Patch RPC call |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [status/types.proto](#status/types.proto)
- Messages
- [Status](#neo.fs.v2.status.Status)
- [Status.Detail](#neo.fs.v2.status.Status.Detail)
- [Scalar Value Types](#scalar-value-types)
<a name="status/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## status/types.proto
<!-- end services -->
<a name="neo.fs.v2.status.Status"></a>
### Message Status
Declares the general format of the status returns of the FrostFS RPC
protocol. Status is present in all response messages. Each RPC of FrostFS
protocol describes the possible outcomes and details of the operation.
Each status is assigned a one-to-one numeric code. Any unique result of an
operation in FrostFS is unambiguously associated with the code value.
Numerical set of codes is split into 1024-element sections. An enumeration
is defined for each section. Values can be referred to in the following ways:
* numerical value ranging from 0 to 4,294,967,295 (global code);
* values from enumeration (local code). The formula for the ratio of the
local code (`L`) of a defined section (`S`) to the global one (`G`):
`G = 1024 * S + L`.
All outcomes are divided into successful and failed, which corresponds
to the success or failure of the operation. The definition of success
follows the semantics of RPC and the description of its purpose.
The server must not attach code that is the opposite of the outcome type.
See the set of return codes in the description for calls.
Each status can carry a developer-facing error message. It should be a human
readable text in English. The server should not transmit (and the client
should not expect) useful information in the message. Field `details`
should make the return more detailed.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| code | [uint32](#uint32) | | The status code |
| message | [string](#string) | | Developer-facing error message |
| details | [Status.Detail](#neo.fs.v2.status.Status.Detail) | repeated | Data detailing the outcome of the operation. Must be unique by ID. |
<a name="neo.fs.v2.status.Status.Detail"></a>
### Message Status.Detail
Return detail. It contains additional information that can be used to
analyze the response. Each code defines a set of details that can be
attached to a status. Client should not handle details that are not
covered by the code.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [uint32](#uint32) | | Detail ID. The identifier is required to determine the binary format of the detail and how to decode it. |
| value | [bytes](#bytes) | | Binary status detail. Must follow the format associated with ID. The possibility of missing a value must be explicitly allowed. |
<!-- end messages -->
<a name="neo.fs.v2.status.APEManager"></a>
### APEManager
Section of status for APE manager related operations.
| Name | Number | Description |
| ---- | ------ | ----------- |
| APE_MANAGER_ACCESS_DENIED | 0 | [**5120**] The operation is denied by APE manager. |
<a name="neo.fs.v2.status.CommonFail"></a>
### CommonFail
Section of failed statuses independent of the operation.
| Name | Number | Description |
| ---- | ------ | ----------- |
| INTERNAL | 0 | [**1024**] Internal server error, default failure. Not detailed. If the server cannot match failed outcome to the code, it should use this code. |
| WRONG_MAGIC_NUMBER | 1 | [**1025**] Wrong magic of the FrostFS network. Details: - [**0**] Magic number of the served FrostFS network (big-endian 64-bit unsigned integer). |
| SIGNATURE_VERIFICATION_FAIL | 2 | [**1026**] Signature verification failure. |
| NODE_UNDER_MAINTENANCE | 3 | [**1027**] Node is under maintenance. |
| INVALID_ARGUMENT | 4 | [**1028**] Invalid argument error. If the server fails on validation of a request parameter as the client sent it incorrectly, then this code should be used. |
<a name="neo.fs.v2.status.Container"></a>
### Container
Section of statuses for container-related operations.
| Name | Number | Description |
| ---- | ------ | ----------- |
| CONTAINER_NOT_FOUND | 0 | [**3072**] Container not found. |
| EACL_NOT_FOUND | 1 | [**3073**] eACL table not found. |
| CONTAINER_ACCESS_DENIED | 2 | [**3074**] Container access denied. |
<a name="neo.fs.v2.status.Object"></a>
### Object
Section of statuses for object-related operations.
| Name | Number | Description |
| ---- | ------ | ----------- |
| ACCESS_DENIED | 0 | [**2048**] Access denied by ACL. Details: - [**0**] Human-readable description (UTF-8 encoded string). |
| OBJECT_NOT_FOUND | 1 | [**2049**] Object not found. |
| LOCKED | 2 | [**2050**] Operation rejected by the object lock. |
| LOCK_NON_REGULAR_OBJECT | 3 | [**2051**] Locking an object with a non-REGULAR type rejected. |
| OBJECT_ALREADY_REMOVED | 4 | [**2052**] Object has been marked deleted. |
| OUT_OF_RANGE | 5 | [**2053**] Invalid range has been requested for an object. |
<a name="neo.fs.v2.status.Section"></a>
### Section
Section identifiers.
| Name | Number | Description |
| ---- | ------ | ----------- |
| SECTION_SUCCESS | 0 | Successful return codes. |
| SECTION_FAILURE_COMMON | 1 | Failure codes regardless of the operation. |
| SECTION_OBJECT | 2 | Object service-specific errors. |
| SECTION_CONTAINER | 3 | Container service-specific errors. |
| SECTION_SESSION | 4 | Session service-specific errors. |
| SECTION_APE_MANAGER | 5 | Session service-specific errors. |
<a name="neo.fs.v2.status.Session"></a>
### Session
Section of statuses for session-related operations.
| Name | Number | Description |
| ---- | ------ | ----------- |
| TOKEN_NOT_FOUND | 0 | [**4096**] Token not found. |
| TOKEN_EXPIRED | 1 | [**4097**] Token has expired. |
<a name="neo.fs.v2.status.Success"></a>
### Success
Section of FrostFS successful return codes.
| Name | Number | Description |
| ---- | ------ | ----------- |
| OK | 0 | [**0**] Default success. Not detailed. If the server cannot match successful outcome to the code, it should use this code. |
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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# Protocol Documentation
<a name="top"></a>
## Table of Contents
- [tombstone/types.proto](#tombstone/types.proto)
- Messages
- [Tombstone](#neo.fs.v2.tombstone.Tombstone)
- [Scalar Value Types](#scalar-value-types)
<a name="tombstone/types.proto"></a>
<p align="right"><a href="#top">Top</a></p>
## tombstone/types.proto
<!-- end services -->
<a name="neo.fs.v2.tombstone.Tombstone"></a>
### Message Tombstone
Tombstone keeps record of deleted objects for a few epochs until they are
purged from the FrostFS network.
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| expiration_epoch | [uint64](#uint64) | | Last FrostFS epoch number of the tombstone lifetime. It's set by the tombstone creator depending on the current FrostFS network settings. A tombstone object must have the same expiration epoch value in `__SYSTEM__EXPIRATION_EPOCH` (`__NEOFS__EXPIRATION_EPOCH` is deprecated) attribute. Otherwise, the tombstone will be rejected by a storage node. |
| split_id | [bytes](#bytes) | | 16 byte UUID used to identify the split object hierarchy parts. Must be unique inside a container. All objects participating in the split must have the same `split_id` value. |
| members | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | repeated | List of objects to be deleted. |
<!-- end messages -->
<!-- end enums -->
## Scalar Value Types
| .proto Type | Notes | C++ Type | Java Type | Python Type |
| ----------- | ----- | -------- | --------- | ----------- |
| <a name="double" /> double | | double | double | float |
| <a name="float" /> float | | float | float | float |
| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
| <a name="bool" /> bool | | bool | boolean | boolean |
| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |

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edition = "2023";
package neo.fs.v2.refs;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/grpc;refs";
option csharp_namespace = "Neo.FileStorage.API.Refs";
// Objects in FrostFS are addressed by their ContainerID and ObjectID.
//
// String presentation of `Address` is a concatenation of string encoded
// `ContainerID` and `ObjectID` delimited by '/' character.
message Address {
// Container identifier
ContainerID container_id = 1 [ json_name = "containerID" ];
// Object identifier
ObjectID object_id = 2 [ json_name = "objectID" ];
}
// FrostFS Object unique identifier. Objects are immutable and
// content-addressed. It means `ObjectID` will change if the `header` or the
// `payload` changes.
//
// `ObjectID` is a 32 byte long
// [SHA256](https://csrc.nist.gov/publications/detail/fips/180/4/final) hash of
// the object's `header` field, which, in it's turn, contains the hash of the
// object's payload.
//
// String presentation is a
// [base58](https://tools.ietf.org/html/draft-msporny-base58-02) encoded string.
//
// JSON value will be data encoded as a string using standard base64
// encoding with paddings. Either
// [standard](https://tools.ietf.org/html/rfc4648#section-4) or
// [URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
// with/without paddings are accepted.
message ObjectID {
// Object identifier in a binary format
bytes value = 1 [ json_name = "value" ];
}
// FrostFS container identifier. Container structures are immutable and
// content-addressed.
//
// `ContainerID` is a 32 byte long
// [SHA256](https://csrc.nist.gov/publications/detail/fips/180/4/final) hash of
// stable-marshalled container message.
//
// String presentation is a
// [base58](https://tools.ietf.org/html/draft-msporny-base58-02) encoded string.
//
// JSON value will be data encoded as a string using standard base64
// encoding with paddings. Either
// [standard](https://tools.ietf.org/html/rfc4648#section-4) or
// [URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
// with/without paddings are accepted.
message ContainerID {
// Container identifier in a binary format.
bytes value = 1 [ json_name = "value" ];
}
// `OwnerID` is a derivative of a user's main public key. The transformation
// algorithm is the same as for Neo3 wallet addresses. Neo3 wallet address can
// be directly used as `OwnerID`.
//
// `OwnerID` is a 25 bytes sequence starting with Neo version prefix byte
// followed by 20 bytes of ScrptHash and 4 bytes of checksum.
//
// String presentation is a [Base58
// Check](https://en.bitcoin.it/wiki/Base58Check_encoding) Encoded string.
//
// JSON value will be data encoded as a string using standard base64
// encoding with paddings. Either
// [standard](https://tools.ietf.org/html/rfc4648#section-4) or
// [URL-safe](https://tools.ietf.org/html/rfc4648#section-5) base64 encoding
// with/without paddings are accepted.
message OwnerID {
// Identifier of the container owner in a binary format
bytes value = 1 [ json_name = "value" ];
}
// API version used by a node.
//
// String presentation is a Semantic Versioning 2.0.0 compatible version string
// with 'v' prefix. i.e. `vX.Y`, where `X` is the major number, `Y` is the minor
// number.
message Version {
// Major API version
uint32 major = 1 [ json_name = "major" ];
// Minor API version
uint32 minor = 2 [ json_name = "minor" ];
}
// Signature of something in FrostFS.
message Signature {
// Public key used for signing
bytes key = 1 [ json_name = "key" ];
// Signature
bytes sign = 2 [ json_name = "signature" ];
// Scheme contains digital signature scheme identifier
SignatureScheme scheme = 3 [ json_name = "scheme" ];
}
// Signature scheme describes digital signing scheme used for (key, signature)
// pair.
enum SignatureScheme {
// ECDSA with SHA-512 hashing (FIPS 186-3)
ECDSA_SHA512 = 0;
// Deterministic ECDSA with SHA-256 hashing (RFC 6979)
ECDSA_RFC6979_SHA256 = 1;
// Deterministic ECDSA with SHA-256 hashing using WalletConnect API.
// Here the algorithm is the same, but the message format differs.
ECDSA_RFC6979_SHA256_WALLET_CONNECT = 2;
}
// RFC 6979 signature.
message SignatureRFC6979 {
// Public key used for signing
bytes key = 1 [ json_name = "key" ];
// Deterministic ECDSA with SHA-256 hashing
bytes sign = 2 [ json_name = "signature" ];
}
// Checksum algorithm type.
enum ChecksumType {
// Unknown. Not used
CHECKSUM_TYPE_UNSPECIFIED = 0;
// Tillich-Zemor homomorphic hash function
TZ = 1;
// SHA-256
SHA256 = 2;
}
// Checksum message.
// Depending on checksum algorithm type, the string presentation may vary:
//
// * TZ \
// Hex encoded string without `0x` prefix
// * SHA256 \
// Hex encoded string without `0x` prefix
message Checksum {
// Checksum algorithm type
ChecksumType type = 1 [ json_name = "type" ];
// Checksum itself
bytes sum = 2 [ json_name = "sum" ];
}

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edition = "2023";
package neo.fs.v2.session;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session/grpc;session";
option csharp_namespace = "Neo.FileStorage.API.Session";
import "refs/types.proto";
import "session/types.proto";
// `SessionService` allows to establish a temporary trust relationship between
// two peer nodes and generate a `SessionToken` as the proof of trust to be
// attached in requests for further verification. Please see corresponding
// section of FrostFS Technical Specification for details.
service SessionService {
// Open a new session between two peers.
//
// Statuses:
// - **OK** (0, SECTION_SUCCESS):
// session has been successfully opened;
// - Common failures (SECTION_FAILURE_COMMON).
rpc Create(CreateRequest) returns (CreateResponse);
}
// Information necessary for opening a session.
message CreateRequest {
// Session creation request body
message Body {
// Session initiating user's or node's key derived `OwnerID`
neo.fs.v2.refs.OwnerID owner_id = 1;
// Session expiration `Epoch`
uint64 expiration = 2;
}
// Body of a create session token request message.
Body body = 1;
// Carries request meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.RequestMetaHeader meta_header = 2;
// Carries request verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.RequestVerificationHeader verify_header = 3;
}
// Information about the opened session.
message CreateResponse {
// Session creation response body
message Body {
// Identifier of a newly created session
bytes id = 1;
// Public key used for session
bytes session_key = 2;
}
// Body of create session token response message.
Body body = 1;
// Carries response meta information. Header data is used only to regulate
// message transport and does not affect request execution.
neo.fs.v2.session.ResponseMetaHeader meta_header = 2;
// Carries response verification information. This header is used to
// authenticate the nodes of the message route and check the correctness of
// transmission.
neo.fs.v2.session.ResponseVerificationHeader verify_header = 3;
}

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edition = "2023";
package neo.fs.v2.session;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session/grpc;session";
option csharp_namespace = "Neo.FileStorage.API.Session";
import "refs/types.proto";
import "acl/types.proto";
import "status/types.proto";
// Context information for Session Tokens related to ObjectService requests
message ObjectSessionContext {
// Object request verbs
enum Verb {
// Unknown verb
VERB_UNSPECIFIED = 0;
// Refers to object.Put RPC call
PUT = 1;
// Refers to object.Get RPC call
GET = 2;
// Refers to object.Head RPC call
HEAD = 3;
// Refers to object.Search RPC call
SEARCH = 4;
// Refers to object.Delete RPC call
DELETE = 5;
// Refers to object.GetRange RPC call
RANGE = 6;
// Refers to object.GetRangeHash RPC call
RANGEHASH = 7;
// Refers to object.Patch RPC call
PATCH = 8;
}
// Type of request for which the token is issued
Verb verb = 1 [ json_name = "verb" ];
// Carries objects involved in the object session.
message Target {
// Indicates which container the session is spread to. Field MUST be set
// and correct.
refs.ContainerID container = 1 [ json_name = "container" ];
// Indicates which objects the session is spread to. Objects are expected
// to be stored in the FrostFS container referenced by `container` field.
// Each element MUST have correct format.
repeated refs.ObjectID objects = 2 [ json_name = "objects" ];
}
// Object session target. MUST be correctly formed and set. If `objects`
// field is not empty, then the session applies only to these elements,
// otherwise, to all objects from the specified container.
Target target = 2 [ json_name = "target" ];
}
// Context information for Session Tokens related to ContainerService requests.
message ContainerSessionContext {
// Container request verbs
enum Verb {
// Unknown verb
VERB_UNSPECIFIED = 0;
// Refers to container.Put RPC call
PUT = 1;
// Refers to container.Delete RPC call
DELETE = 2;
// Refers to container.SetExtendedACL RPC call
SETEACL = 3;
}
// Type of request for which the token is issued
Verb verb = 1 [ json_name = "verb" ];
// Spreads the action to all owner containers.
// If set, container_id field is ignored.
bool wildcard = 2 [ json_name = "wildcard" ];
// Particular container to which the action applies.
// Ignored if wildcard flag is set.
refs.ContainerID container_id = 3 [ json_name = "containerID" ];
}
// FrostFS Session Token.
message SessionToken {
// Session Token body
message Body {
// Token identifier is a valid UUIDv4 in binary form
bytes id = 1 [ json_name = "id" ];
// Identifier of the session initiator
neo.fs.v2.refs.OwnerID owner_id = 2 [ json_name = "ownerID" ];
// Lifetime parameters of the token. Field names taken from rfc7519.
message TokenLifetime {
// Expiration Epoch
uint64 exp = 1 [ json_name = "exp" ];
// Not valid before Epoch
uint64 nbf = 2 [ json_name = "nbf" ];
// Issued at Epoch
uint64 iat = 3 [ json_name = "iat" ];
}
// Lifetime of the session
TokenLifetime lifetime = 3 [ json_name = "lifetime" ];
// Public key used in session
bytes session_key = 4 [ json_name = "sessionKey" ];
// Session Context information
oneof context {
// ObjectService session context
ObjectSessionContext object = 5 [ json_name = "object" ];
// ContainerService session context
ContainerSessionContext container = 6 [ json_name = "container" ];
}
}
// Session Token contains the proof of trust between peers to be attached in
// requests for further verification. Please see corresponding section of
// FrostFS Technical Specification for details.
Body body = 1 [ json_name = "body" ];
// Signature of `SessionToken` information
neo.fs.v2.refs.Signature signature = 2 [ json_name = "signature" ];
}
// Extended headers for Request/Response. They may contain any user-defined
// headers to be interpreted on application level.
//
// Key name must be a unique valid UTF-8 string. Value can't be empty. Requests
// or Responses with duplicated header names or headers with empty values will
// be considered invalid.
//
// There are some "well-known" headers starting with `__SYSTEM__` (`__NEOFS__`
// is deprecated) prefix that affect system behaviour:
//
// * [ __SYSTEM__NETMAP_EPOCH ] \
// (`__NEOFS__NETMAP_EPOCH` is deprecated) \
// Netmap epoch to use for object placement calculation. The `value` is string
// encoded `uint64` in decimal presentation. If set to '0' or not set, the
// current epoch only will be used.
// * [ __SYSTEM__NETMAP_LOOKUP_DEPTH ] \
// (`__NEOFS__NETMAP_LOOKUP_DEPTH` is deprecated) \
// If object can't be found using current epoch's netmap, this header limits
// how many past epochs the node can look up through. The `value` is string
// encoded `uint64` in decimal presentation. If set to '0' or not set, only
// the current epoch will be used.
message XHeader {
// Key of the X-Header
string key = 1 [ json_name = "key" ];
// Value of the X-Header
string value = 2 [ json_name = "value" ];
}
// Meta information attached to the request. When forwarded between peers,
// request meta headers are folded in matryoshka style.
message RequestMetaHeader {
// Peer's API version used
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Peer's local epoch number. Set to 0 if unknown.
uint64 epoch = 2 [ json_name = "epoch" ];
// Maximum number of intermediate nodes in the request route
uint32 ttl = 3 [ json_name = "ttl" ];
// Request X-Headers
repeated XHeader x_headers = 4 [ json_name = "xHeaders" ];
// Session token within which the request is sent
SessionToken session_token = 5 [ json_name = "sessionToken" ];
// `BearerToken` with eACL overrides for the request
neo.fs.v2.acl.BearerToken bearer_token = 6 [ json_name = "bearerToken" ];
// `RequestMetaHeader` of the origin request
RequestMetaHeader origin = 7 [ json_name = "origin" ];
// FrostFS network magic. Must match the value for the network
// that the server belongs to.
uint64 magic_number = 8 [ json_name = "magicNumber" ];
}
// Information about the response
message ResponseMetaHeader {
// Peer's API version used
neo.fs.v2.refs.Version version = 1 [ json_name = "version" ];
// Peer's local epoch number
uint64 epoch = 2 [ json_name = "epoch" ];
// Maximum number of intermediate nodes in the request route
uint32 ttl = 3 [ json_name = "ttl" ];
// Response X-Headers
repeated XHeader x_headers = 4 [ json_name = "xHeaders" ];
// `ResponseMetaHeader` of the origin request
ResponseMetaHeader origin = 5 [ json_name = "origin" ];
// Status return
neo.fs.v2.status.Status status = 6 [ json_name = "status" ];
}
// Verification info for the request signed by all intermediate nodes.
message RequestVerificationHeader {
// Request Body signature. Should be generated once by the request initiator.
neo.fs.v2.refs.Signature body_signature = 1 [ json_name = "bodySignature" ];
// Request Meta signature is added and signed by each intermediate node
neo.fs.v2.refs.Signature meta_signature = 2 [ json_name = "metaSignature" ];
// Signature of previous hops
neo.fs.v2.refs.Signature origin_signature = 3
[ json_name = "originSignature" ];
// Chain of previous hops signatures
RequestVerificationHeader origin = 4 [ json_name = "origin" ];
}
// Verification info for the response signed by all intermediate nodes
message ResponseVerificationHeader {
// Response Body signature. Should be generated once by an answering node.
neo.fs.v2.refs.Signature body_signature = 1 [ json_name = "bodySignature" ];
// Response Meta signature is added and signed by each intermediate node
neo.fs.v2.refs.Signature meta_signature = 2 [ json_name = "metaSignature" ];
// Signature of previous hops
neo.fs.v2.refs.Signature origin_signature = 3
[ json_name = "originSignature" ];
// Chain of previous hops signatures
ResponseVerificationHeader origin = 4 [ json_name = "origin" ];
}

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edition = "2023";
package neo.fs.v2.status;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/status/grpc;status";
option csharp_namespace = "Neo.FileStorage.API.Status";
// Declares the general format of the status returns of the FrostFS RPC
// protocol. Status is present in all response messages. Each RPC of FrostFS
// protocol describes the possible outcomes and details of the operation.
//
// Each status is assigned a one-to-one numeric code. Any unique result of an
// operation in FrostFS is unambiguously associated with the code value.
//
// Numerical set of codes is split into 1024-element sections. An enumeration
// is defined for each section. Values can be referred to in the following ways:
//
// * numerical value ranging from 0 to 4,294,967,295 (global code);
//
// * values from enumeration (local code). The formula for the ratio of the
// local code (`L`) of a defined section (`S`) to the global one (`G`):
// `G = 1024 * S + L`.
//
// All outcomes are divided into successful and failed, which corresponds
// to the success or failure of the operation. The definition of success
// follows the semantics of RPC and the description of its purpose.
// The server must not attach code that is the opposite of the outcome type.
//
// See the set of return codes in the description for calls.
//
// Each status can carry a developer-facing error message. It should be a human
// readable text in English. The server should not transmit (and the client
// should not expect) useful information in the message. Field `details`
// should make the return more detailed.
message Status {
// The status code
uint32 code = 1;
// Developer-facing error message
string message = 2;
// Return detail. It contains additional information that can be used to
// analyze the response. Each code defines a set of details that can be
// attached to a status. Client should not handle details that are not
// covered by the code.
message Detail {
// Detail ID. The identifier is required to determine the binary format
// of the detail and how to decode it.
uint32 id = 1;
// Binary status detail. Must follow the format associated with ID.
// The possibility of missing a value must be explicitly allowed.
bytes value = 2;
}
// Data detailing the outcome of the operation. Must be unique by ID.
repeated Detail details = 3;
}
// Section identifiers.
enum Section {
// Successful return codes.
SECTION_SUCCESS = 0;
// Failure codes regardless of the operation.
SECTION_FAILURE_COMMON = 1;
// Object service-specific errors.
SECTION_OBJECT = 2;
// Container service-specific errors.
SECTION_CONTAINER = 3;
// Session service-specific errors.
SECTION_SESSION = 4;
// Session service-specific errors.
SECTION_APE_MANAGER = 5;
}
// Section of FrostFS successful return codes.
enum Success {
// [**0**] Default success. Not detailed.
// If the server cannot match successful outcome to the code, it should
// use this code.
OK = 0;
}
// Section of failed statuses independent of the operation.
enum CommonFail {
// [**1024**] Internal server error, default failure. Not detailed.
// If the server cannot match failed outcome to the code, it should
// use this code.
INTERNAL = 0;
// [**1025**] Wrong magic of the FrostFS network.
// Details:
// - [**0**] Magic number of the served FrostFS network (big-endian 64-bit
// unsigned integer).
WRONG_MAGIC_NUMBER = 1;
// [**1026**] Signature verification failure.
SIGNATURE_VERIFICATION_FAIL = 2;
// [**1027**] Node is under maintenance.
NODE_UNDER_MAINTENANCE = 3;
// [**1028**] Invalid argument error. If the server fails on validation of a
// request parameter as the client sent it incorrectly, then this code should
// be used.
INVALID_ARGUMENT = 4;
// [**1029**] Resource exhausted failure. This code should be used
// if the operation cannot be performed due to a lack of resources.
RESOURCE_EXHAUSTED = 5;
}
// Section of statuses for object-related operations.
enum Object {
// [**2048**] Access denied by ACL.
// Details:
// - [**0**] Human-readable description (UTF-8 encoded string).
ACCESS_DENIED = 0;
// [**2049**] Object not found.
OBJECT_NOT_FOUND = 1;
// [**2050**] Operation rejected by the object lock.
LOCKED = 2;
// [**2051**] Locking an object with a non-REGULAR type rejected.
LOCK_NON_REGULAR_OBJECT = 3;
// [**2052**] Object has been marked deleted.
OBJECT_ALREADY_REMOVED = 4;
// [**2053**] Invalid range has been requested for an object.
OUT_OF_RANGE = 5;
}
// Section of statuses for container-related operations.
enum Container {
// [**3072**] Container not found.
CONTAINER_NOT_FOUND = 0;
// [**3073**] eACL table not found.
EACL_NOT_FOUND = 1;
// [**3074**] Container access denied.
CONTAINER_ACCESS_DENIED = 2;
}
// Section of statuses for session-related operations.
enum Session {
// [**4096**] Token not found.
TOKEN_NOT_FOUND = 0;
// [**4097**] Token has expired.
TOKEN_EXPIRED = 1;
}
// Section of status for APE manager related operations.
enum APEManager {
// [**5120**] The operation is denied by APE manager.
APE_MANAGER_ACCESS_DENIED = 0;
}

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edition = "2023";
package neo.fs.v2.tombstone;
option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/tombstone/grpc;tombstone";
option csharp_namespace = "Neo.FileStorage.API.Tombstone";
import "refs/types.proto";
// Tombstone keeps record of deleted objects for a few epochs until they are
// purged from the FrostFS network.
message Tombstone {
// Last FrostFS epoch number of the tombstone lifetime. It's set by the
// tombstone creator depending on the current FrostFS network settings. A
// tombstone object must have the same expiration epoch value in
// `__SYSTEM__EXPIRATION_EPOCH` (`__NEOFS__EXPIRATION_EPOCH` is deprecated)
// attribute. Otherwise, the tombstone will be rejected by a storage node.
uint64 expiration_epoch = 1 [ json_name = "expirationEpoch" ];
// 16 byte UUID used to identify the split object hierarchy parts. Must be
// unique inside a container. All objects participating in the split must
// have the same `split_id` value.
bytes split_id = 2 [ json_name = "splitID" ];
// List of objects to be deleted.
repeated neo.fs.v2.refs.ObjectID members = 3 [ json_name = "members" ];
}