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