842 lines
37 KiB
Markdown
842 lines
37 KiB
Markdown
# Protocol Documentation
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<a name="top"></a>
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## Table of Contents
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- [object/service.proto](#object/service.proto)
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- Services
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- [ObjectService](#neo.fs.v2.object.ObjectService)
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- Messages
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- [DeleteRequest](#neo.fs.v2.object.DeleteRequest)
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- [DeleteRequest.Body](#neo.fs.v2.object.DeleteRequest.Body)
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- [DeleteResponse](#neo.fs.v2.object.DeleteResponse)
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- [DeleteResponse.Body](#neo.fs.v2.object.DeleteResponse.Body)
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- [GetRangeHashRequest](#neo.fs.v2.object.GetRangeHashRequest)
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- [GetRangeHashRequest.Body](#neo.fs.v2.object.GetRangeHashRequest.Body)
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- [GetRangeHashResponse](#neo.fs.v2.object.GetRangeHashResponse)
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- [GetRangeHashResponse.Body](#neo.fs.v2.object.GetRangeHashResponse.Body)
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- [GetRangeRequest](#neo.fs.v2.object.GetRangeRequest)
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- [GetRangeRequest.Body](#neo.fs.v2.object.GetRangeRequest.Body)
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- [GetRangeResponse](#neo.fs.v2.object.GetRangeResponse)
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- [GetRangeResponse.Body](#neo.fs.v2.object.GetRangeResponse.Body)
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- [GetRequest](#neo.fs.v2.object.GetRequest)
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- [GetRequest.Body](#neo.fs.v2.object.GetRequest.Body)
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- [GetResponse](#neo.fs.v2.object.GetResponse)
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- [GetResponse.Body](#neo.fs.v2.object.GetResponse.Body)
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- [GetResponse.Body.Init](#neo.fs.v2.object.GetResponse.Body.Init)
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- [HeadRequest](#neo.fs.v2.object.HeadRequest)
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- [HeadRequest.Body](#neo.fs.v2.object.HeadRequest.Body)
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- [HeadResponse](#neo.fs.v2.object.HeadResponse)
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- [HeadResponse.Body](#neo.fs.v2.object.HeadResponse.Body)
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- [HeaderWithSignature](#neo.fs.v2.object.HeaderWithSignature)
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- [PutRequest](#neo.fs.v2.object.PutRequest)
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- [PutRequest.Body](#neo.fs.v2.object.PutRequest.Body)
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- [PutRequest.Body.Init](#neo.fs.v2.object.PutRequest.Body.Init)
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- [PutResponse](#neo.fs.v2.object.PutResponse)
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- [PutResponse.Body](#neo.fs.v2.object.PutResponse.Body)
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- [Range](#neo.fs.v2.object.Range)
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- [SearchRequest](#neo.fs.v2.object.SearchRequest)
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- [SearchRequest.Body](#neo.fs.v2.object.SearchRequest.Body)
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- [SearchRequest.Body.Filter](#neo.fs.v2.object.SearchRequest.Body.Filter)
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- [SearchResponse](#neo.fs.v2.object.SearchResponse)
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- [SearchResponse.Body](#neo.fs.v2.object.SearchResponse.Body)
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- [object/types.proto](#object/types.proto)
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- Messages
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- [Header](#neo.fs.v2.object.Header)
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- [Header.Attribute](#neo.fs.v2.object.Header.Attribute)
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- [Header.Split](#neo.fs.v2.object.Header.Split)
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- [Object](#neo.fs.v2.object.Object)
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- [ShortHeader](#neo.fs.v2.object.ShortHeader)
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- [SplitInfo](#neo.fs.v2.object.SplitInfo)
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- [Scalar Value Types](#scalar-value-types)
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<a name="object/service.proto"></a>
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<p align="right"><a href="#top">Top</a></p>
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## object/service.proto
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<a name="neo.fs.v2.object.ObjectService"></a>
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### Service "neo.fs.v2.object.ObjectService"
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`ObjectService` provides API for manipulating objects. Object operations do
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not interact with sidechain and are only served by nodes in p2p style.
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```
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rpc Get(GetRequest) returns (stream GetResponse);
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rpc Put(stream PutRequest) returns (PutResponse);
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rpc Delete(DeleteRequest) returns (DeleteResponse);
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rpc Head(HeadRequest) returns (HeadResponse);
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rpc Search(SearchRequest) returns (stream SearchResponse);
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rpc GetRange(GetRangeRequest) returns (stream GetRangeResponse);
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rpc GetRangeHash(GetRangeHashRequest) returns (GetRangeHashResponse);
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```
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#### Method Get
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Receive full object structure, including Headers and payload. Response uses
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gRPC stream. First response message carries object with requested address.
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Chunk messages are parts of the object's payload if it is needed. All
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messages, except the first one, carry payload chunks. Requested object can
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be restored by concatenation of object message payload and all chunks
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keeping receiving order.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| Get | [GetRequest](#neo.fs.v2.object.GetRequest) | [GetResponse](#neo.fs.v2.object.GetResponse) |
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#### Method Put
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Put the object into container. Request uses gRPC stream. First message
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SHOULD be of PutHeader type. `ContainerID` and `OwnerID` of an object
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SHOULD be set. Session token SHOULD be obtained before `PUT` operation (see
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session package). Chunk messages are considered by server as a part of an
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object payload. All messages, except first one, SHOULD be payload chunks.
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Chunk messages SHOULD be sent in direct order of fragmentation.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| Put | [PutRequest](#neo.fs.v2.object.PutRequest) | [PutResponse](#neo.fs.v2.object.PutResponse) |
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#### Method Delete
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Delete the object from a container. There is no immediate removal
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guarantee. Object will be marked for removal and deleted eventually.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| Delete | [DeleteRequest](#neo.fs.v2.object.DeleteRequest) | [DeleteResponse](#neo.fs.v2.object.DeleteResponse) |
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#### Method Head
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Returns the object Headers without data payload. By default full header is
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returned. If `main_only` request field is set, the short header with only
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the very minimal information would be returned instead.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| Head | [HeadRequest](#neo.fs.v2.object.HeadRequest) | [HeadResponse](#neo.fs.v2.object.HeadResponse) |
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#### Method Search
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Search objects in container. Search query allows to match by Object
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Header's filed values. Please see the corresponding NeoFS Technical
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Specification section for more details.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| Search | [SearchRequest](#neo.fs.v2.object.SearchRequest) | [SearchResponse](#neo.fs.v2.object.SearchResponse) |
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#### Method GetRange
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Get byte range of data payload. Range is set as an (offset, length) tuple.
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Like in `Get` method, the response uses gRPC stream. Requested range can be
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restored by concatenation of all received payload chunks keeping receiving
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order.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| GetRange | [GetRangeRequest](#neo.fs.v2.object.GetRangeRequest) | [GetRangeResponse](#neo.fs.v2.object.GetRangeResponse) |
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#### Method GetRangeHash
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Returns homomorphic or regular hash of object's payload range after
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applying XOR operation with the provided `salt`. Ranges are set of (offset,
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length) tuples. Hashes order in response corresponds to ranges order in
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request. Note that hash is calculated for XORed data.
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| Name | Input | Output |
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| ---- | ----- | ------ |
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| GetRangeHash | [GetRangeHashRequest](#neo.fs.v2.object.GetRangeHashRequest) | [GetRangeHashResponse](#neo.fs.v2.object.GetRangeHashResponse) |
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<!-- end services -->
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<a name="neo.fs.v2.object.DeleteRequest"></a>
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### Message DeleteRequest
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Object DELETE request
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [DeleteRequest.Body](#neo.fs.v2.object.DeleteRequest.Body) | | Body of delete object request message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.DeleteRequest.Body"></a>
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### Message DeleteRequest.Body
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Object DELETE request body
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| address | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the object to be deleted |
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<a name="neo.fs.v2.object.DeleteResponse"></a>
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### Message DeleteResponse
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DeleteResponse body is empty because we cannot guarantee permanent object
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removal in distributed system.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [DeleteResponse.Body](#neo.fs.v2.object.DeleteResponse.Body) | | Body of delete object response message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.DeleteResponse.Body"></a>
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### Message DeleteResponse.Body
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Object DELETE Response has an empty body.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| tombstone | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the tombstone created for the deleted object |
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<a name="neo.fs.v2.object.GetRangeHashRequest"></a>
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### Message GetRangeHashRequest
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Get hash of object's payload part
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetRangeHashRequest.Body](#neo.fs.v2.object.GetRangeHashRequest.Body) | | Body of get range hash object request message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetRangeHashRequest.Body"></a>
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### Message GetRangeHashRequest.Body
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Get hash of object's payload part request body.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| address | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the object that containing the requested payload range |
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| ranges | [Range](#neo.fs.v2.object.Range) | repeated | List of object's payload ranges to calculate homomorphic hash |
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| salt | [bytes](#bytes) | | Binary salt to XOR object's payload ranges before hash calculation |
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| type | [neo.fs.v2.refs.ChecksumType](#neo.fs.v2.refs.ChecksumType) | | Checksum algorithm type |
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<a name="neo.fs.v2.object.GetRangeHashResponse"></a>
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### Message GetRangeHashResponse
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Get hash of object's payload part
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetRangeHashResponse.Body](#neo.fs.v2.object.GetRangeHashResponse.Body) | | Body of get range hash object response message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetRangeHashResponse.Body"></a>
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### Message GetRangeHashResponse.Body
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Get hash of object's payload part response body.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| type | [neo.fs.v2.refs.ChecksumType](#neo.fs.v2.refs.ChecksumType) | | Checksum algorithm type |
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| hash_list | [bytes](#bytes) | repeated | List of range hashes in a binary format |
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<a name="neo.fs.v2.object.GetRangeRequest"></a>
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### Message GetRangeRequest
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Request part of object's payload
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetRangeRequest.Body](#neo.fs.v2.object.GetRangeRequest.Body) | | Body of get range object request message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetRangeRequest.Body"></a>
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### Message GetRangeRequest.Body
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Byte range of object's payload request body
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| address | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the object containing the requested payload range |
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| range | [Range](#neo.fs.v2.object.Range) | | Requested payload range |
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| raw | [bool](#bool) | | If `raw` flag is set, request will work only with objects that are physically stored on the peer node. |
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<a name="neo.fs.v2.object.GetRangeResponse"></a>
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### Message GetRangeResponse
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Get part of object's payload
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetRangeResponse.Body](#neo.fs.v2.object.GetRangeResponse.Body) | | Body of get range object response message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetRangeResponse.Body"></a>
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### Message GetRangeResponse.Body
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Get Range response body uses streams to transfer the response. Because
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object payload considered a byte sequence, there is no need to have some
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initial preamble message. The requested byte range is sent as a series
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chunks.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| chunk | [bytes](#bytes) | | Chunked object payload's range. |
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| split_info | [SplitInfo](#neo.fs.v2.object.SplitInfo) | | Meta information of split hierarchy. |
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<a name="neo.fs.v2.object.GetRequest"></a>
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### Message GetRequest
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GET object request
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetRequest.Body](#neo.fs.v2.object.GetRequest.Body) | | Body of get object request message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetRequest.Body"></a>
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### Message GetRequest.Body
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GET Object request body
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| address | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the requested object |
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| raw | [bool](#bool) | | If `raw` flag is set, request will work only with objects that are physically stored on the peer node |
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<a name="neo.fs.v2.object.GetResponse"></a>
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### Message GetResponse
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GET object response
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [GetResponse.Body](#neo.fs.v2.object.GetResponse.Body) | | Body of get object response message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.GetResponse.Body"></a>
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### Message GetResponse.Body
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GET Object Response body
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| init | [GetResponse.Body.Init](#neo.fs.v2.object.GetResponse.Body.Init) | | Initial part of the object stream |
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| chunk | [bytes](#bytes) | | Chunked object payload |
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| split_info | [SplitInfo](#neo.fs.v2.object.SplitInfo) | | Meta information of split hierarchy for object assembly. |
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<a name="neo.fs.v2.object.GetResponse.Body.Init"></a>
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### Message GetResponse.Body.Init
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Initial part of the `Object` structure stream. Technically it's a
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set of all `Object` structure's fields except `payload`.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| object_id | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Object's unique identifier. |
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| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signed `ObjectID` |
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| header | [Header](#neo.fs.v2.object.Header) | | Object metadata headers |
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<a name="neo.fs.v2.object.HeadRequest"></a>
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### Message HeadRequest
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Object HEAD request
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [HeadRequest.Body](#neo.fs.v2.object.HeadRequest.Body) | | Body of head object request message. |
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| 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. |
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| 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. |
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<a name="neo.fs.v2.object.HeadRequest.Body"></a>
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### Message HeadRequest.Body
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Object HEAD request body
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| address | [neo.fs.v2.refs.Address](#neo.fs.v2.refs.Address) | | Address of the object with the requested Header |
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| main_only | [bool](#bool) | | Return only minimal header subset |
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| raw | [bool](#bool) | | If `raw` flag is set, request will work only with objects that are physically stored on the peer node |
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<a name="neo.fs.v2.object.HeadResponse"></a>
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### Message HeadResponse
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Object HEAD response
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| body | [HeadResponse.Body](#neo.fs.v2.object.HeadResponse.Body) | | Body of head object response message. |
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| 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. |
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| 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.object.HeadResponse.Body"></a>
|
|
|
|
### Message HeadResponse.Body
|
|
Object HEAD response body
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| header | [HeaderWithSignature](#neo.fs.v2.object.HeaderWithSignature) | | Full object's `Header` with `ObjectID` signature |
|
|
| short_header | [ShortHeader](#neo.fs.v2.object.ShortHeader) | | Short object header |
|
|
| split_info | [SplitInfo](#neo.fs.v2.object.SplitInfo) | | Meta information of split hierarchy. |
|
|
|
|
|
|
<a name="neo.fs.v2.object.HeaderWithSignature"></a>
|
|
|
|
### Message HeaderWithSignature
|
|
Tuple of full object header and signature of `ObjectID`. \
|
|
Signed `ObjectID` is present to verify full header's authenticity through the
|
|
following steps:
|
|
|
|
1. Calculate `SHA-256` of marshalled `Header` structure
|
|
2. Check if the resulting hash matched `ObjectID`
|
|
3. Check if `ObjectID` signature in `signature` field is correct
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| header | [Header](#neo.fs.v2.object.Header) | | Full object header |
|
|
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signed `ObjectID` to verify full header's authenticity |
|
|
|
|
|
|
<a name="neo.fs.v2.object.PutRequest"></a>
|
|
|
|
### Message PutRequest
|
|
PUT object request
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| body | [PutRequest.Body](#neo.fs.v2.object.PutRequest.Body) | | Body of put object 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.object.PutRequest.Body"></a>
|
|
|
|
### Message PutRequest.Body
|
|
PUT request body
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| init | [PutRequest.Body.Init](#neo.fs.v2.object.PutRequest.Body.Init) | | Initial part of the object stream |
|
|
| chunk | [bytes](#bytes) | | Chunked object payload |
|
|
|
|
|
|
<a name="neo.fs.v2.object.PutRequest.Body.Init"></a>
|
|
|
|
### Message PutRequest.Body.Init
|
|
Newly created object structure parameters. If some optional parameters
|
|
are not set, they will be calculated by a peer node.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| object_id | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | ObjectID if available. |
|
|
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Object signature if available |
|
|
| header | [Header](#neo.fs.v2.object.Header) | | Object's Header |
|
|
| copies_number | [uint32](#uint32) | | Number of the object copies to store within the RPC call. By default object is processed according to the container's placement policy. |
|
|
|
|
|
|
<a name="neo.fs.v2.object.PutResponse"></a>
|
|
|
|
### Message PutResponse
|
|
PUT Object response
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| body | [PutResponse.Body](#neo.fs.v2.object.PutResponse.Body) | | Body of put object 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.object.PutResponse.Body"></a>
|
|
|
|
### Message PutResponse.Body
|
|
PUT Object response body
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| object_id | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Identifier of the saved object |
|
|
|
|
|
|
<a name="neo.fs.v2.object.Range"></a>
|
|
|
|
### Message Range
|
|
Object payload range.Ranges of zero length SHOULD be considered as invalid.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| offset | [uint64](#uint64) | | Offset of the range from the object payload start |
|
|
| length | [uint64](#uint64) | | Length in bytes of the object payload range |
|
|
|
|
|
|
<a name="neo.fs.v2.object.SearchRequest"></a>
|
|
|
|
### Message SearchRequest
|
|
Object Search request
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| body | [SearchRequest.Body](#neo.fs.v2.object.SearchRequest.Body) | | Body of search object 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.object.SearchRequest.Body"></a>
|
|
|
|
### Message SearchRequest.Body
|
|
Object Search request body
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Container identifier were to search |
|
|
| version | [uint32](#uint32) | | Version of the Query Language used |
|
|
| filters | [SearchRequest.Body.Filter](#neo.fs.v2.object.SearchRequest.Body.Filter) | repeated | List of search expressions |
|
|
|
|
|
|
<a name="neo.fs.v2.object.SearchRequest.Body.Filter"></a>
|
|
|
|
### Message SearchRequest.Body.Filter
|
|
Filter structure checks if object header field or attribute content
|
|
matches a value.
|
|
|
|
If no filters set, search request will return all objects of the
|
|
container, including Regular object, Tombstones and Storage Group
|
|
objects. Most human users expect to get only object they can directly
|
|
work with. In that case the `$Object:ROOT` filter should be used.
|
|
|
|
By default `key` field refers to the corresponding object's `Attribute`.
|
|
Some Object's header fields can also be accessed by adding `$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
|
|
|
|
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 are the top
|
|
level root objects in a split hierarchy. This includes objects not
|
|
present physically, like large objects split into smaller objects
|
|
without separate top-level root object. Other type objects like
|
|
StorageGroups 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.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| match_type | [MatchType](#neo.fs.v2.object.MatchType) | | Match type to use |
|
|
| key | [string](#string) | | Attribute or Header fields to match |
|
|
| value | [string](#string) | | Value to match |
|
|
|
|
|
|
<a name="neo.fs.v2.object.SearchResponse"></a>
|
|
|
|
### Message SearchResponse
|
|
Search response
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| body | [SearchResponse.Body](#neo.fs.v2.object.SearchResponse.Body) | | Body of search object 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.object.SearchResponse.Body"></a>
|
|
|
|
### Message SearchResponse.Body
|
|
Object Search response body
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| id_list | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | repeated | List of `ObjectID`s that match the search query |
|
|
|
|
<!-- end messages -->
|
|
|
|
<!-- end enums -->
|
|
|
|
|
|
|
|
<a name="object/types.proto"></a>
|
|
<p align="right"><a href="#top">Top</a></p>
|
|
|
|
## object/types.proto
|
|
|
|
|
|
<!-- end services -->
|
|
|
|
|
|
<a name="neo.fs.v2.object.Header"></a>
|
|
|
|
### Message Header
|
|
Object Header
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Object format version. Effectively the version of API library used to create particular object |
|
|
| container_id | [neo.fs.v2.refs.ContainerID](#neo.fs.v2.refs.ContainerID) | | Object's container |
|
|
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Object's owner |
|
|
| creation_epoch | [uint64](#uint64) | | Object creation Epoch |
|
|
| payload_length | [uint64](#uint64) | | Size of payload in bytes. `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown. |
|
|
| payload_hash | [neo.fs.v2.refs.Checksum](#neo.fs.v2.refs.Checksum) | | Hash of payload bytes |
|
|
| object_type | [ObjectType](#neo.fs.v2.object.ObjectType) | | Type of the object payload content |
|
|
| homomorphic_hash | [neo.fs.v2.refs.Checksum](#neo.fs.v2.refs.Checksum) | | Homomorphic hash of the object payload |
|
|
| session_token | [neo.fs.v2.session.SessionToken](#neo.fs.v2.session.SessionToken) | | Session token, if it was used during Object creation. Need it to verify integrity and authenticity out of Request scope. |
|
|
| attributes | [Header.Attribute](#neo.fs.v2.object.Header.Attribute) | repeated | User-defined object attributes |
|
|
| split | [Header.Split](#neo.fs.v2.object.Header.Split) | | Position of the object in the split hierarchy |
|
|
|
|
|
|
<a name="neo.fs.v2.object.Header.Attribute"></a>
|
|
|
|
### Message Header.Attribute
|
|
`Attribute` is a user-defined Key-Value metadata pair attached to the
|
|
object.
|
|
|
|
Key name must be a 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 `__NEOFS__` prefix
|
|
that affect system behaviour:
|
|
|
|
* __NEOFS__UPLOAD_ID \
|
|
Marks smaller parts of a split bigger object
|
|
* __NEOFS__EXPIRATION_EPOCH \
|
|
Tells GC to delete object after that epoch
|
|
|
|
And some well-known attributes used by applications only:
|
|
|
|
* Name \
|
|
Human-friendly name
|
|
* FileName \
|
|
File name to be associated with the object on saving
|
|
* 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 NeoFS Technical specification.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| key | [string](#string) | | string key to the object attribute |
|
|
| value | [string](#string) | | string value of the object attribute |
|
|
|
|
|
|
<a name="neo.fs.v2.object.Header.Split"></a>
|
|
|
|
### Message Header.Split
|
|
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.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| parent | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Identifier of the origin object. Known only to the minor child. |
|
|
| previous | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Identifier of the left split neighbor |
|
|
| parent_signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | `signature` field of the parent object. Used to reconstruct parent. |
|
|
| parent_header | [Header](#neo.fs.v2.object.Header) | | `header` field of the parent object. Used to reconstruct parent. |
|
|
| children | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | repeated | List of identifiers of the objects generated by splitting current one. |
|
|
| split_id | [bytes](#bytes) | | 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. |
|
|
|
|
|
|
<a name="neo.fs.v2.object.Object"></a>
|
|
|
|
### Message Object
|
|
Object structure. Object is immutable and content-addressed. It means
|
|
`ObjectID` will change if header or payload changes. It's calculated as a
|
|
hash of header field, which contains hash of object's payload.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| object_id | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Object's unique identifier. |
|
|
| signature | [neo.fs.v2.refs.Signature](#neo.fs.v2.refs.Signature) | | Signed object_id |
|
|
| header | [Header](#neo.fs.v2.object.Header) | | Object metadata headers |
|
|
| payload | [bytes](#bytes) | | Payload bytes |
|
|
|
|
|
|
<a name="neo.fs.v2.object.ShortHeader"></a>
|
|
|
|
### Message ShortHeader
|
|
Short header fields
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| version | [neo.fs.v2.refs.Version](#neo.fs.v2.refs.Version) | | Object format version. Effectively the version of API library used to create particular object. |
|
|
| creation_epoch | [uint64](#uint64) | | Epoch when the object was created |
|
|
| owner_id | [neo.fs.v2.refs.OwnerID](#neo.fs.v2.refs.OwnerID) | | Object's owner |
|
|
| object_type | [ObjectType](#neo.fs.v2.object.ObjectType) | | Type of the object payload content |
|
|
| payload_length | [uint64](#uint64) | | Size of payload in bytes. `0xFFFFFFFFFFFFFFFF` means `payload_length` is unknown |
|
|
| payload_hash | [neo.fs.v2.refs.Checksum](#neo.fs.v2.refs.Checksum) | | Hash of payload bytes |
|
|
| homomorphic_hash | [neo.fs.v2.refs.Checksum](#neo.fs.v2.refs.Checksum) | | Homomorphic hash of the object payload |
|
|
|
|
|
|
<a name="neo.fs.v2.object.SplitInfo"></a>
|
|
|
|
### Message SplitInfo
|
|
Meta information of split hierarchy for object assembly. With last part
|
|
one can traverse linked list of split hierarchy back to first part and
|
|
assemble original object. With linking object one can assembly object
|
|
straight away from the object parts.
|
|
|
|
|
|
| Field | Type | Label | Description |
|
|
| ----- | ---- | ----- | ----------- |
|
|
| split_id | [bytes](#bytes) | | 16 byte UUID used to identify the split object hierarchy parts. |
|
|
| last_part | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Identifier of the last object in split hierarchy parts. It contains split header with original object header. |
|
|
| link | [neo.fs.v2.refs.ObjectID](#neo.fs.v2.refs.ObjectID) | | Identifier of linking object for split hierarchy parts. It contains split header with original object header and sorted list of object parts. |
|
|
|
|
<!-- end messages -->
|
|
|
|
|
|
<a name="neo.fs.v2.object.MatchType"></a>
|
|
|
|
### MatchType
|
|
Type of match expression
|
|
|
|
| Name | Number | Description |
|
|
| ---- | ------ | ----------- |
|
|
| MATCH_TYPE_UNSPECIFIED | 0 | Unknown. Not used |
|
|
| STRING_EQUAL | 1 | Full string match |
|
|
| STRING_NOT_EQUAL | 2 | Full string mismatch |
|
|
| NOT_PRESENT | 3 | Lack of key |
|
|
| COMMON_PREFIX | 4 | String prefix match |
|
|
|
|
|
|
|
|
<a name="neo.fs.v2.object.ObjectType"></a>
|
|
|
|
### ObjectType
|
|
Type of the object payload content. Only `REGULAR` type objects can be split,
|
|
hence `TOMBSTONE` and `STORAGE_GROUP` payload is limited by maximal object
|
|
size.
|
|
|
|
String presentation of object type is the same as definition:
|
|
* REGULAR
|
|
* TOMBSTONE
|
|
* STORAGE_GROUP
|
|
|
|
| Name | Number | Description |
|
|
| ---- | ------ | ----------- |
|
|
| REGULAR | 0 | Just a normal object |
|
|
| TOMBSTONE | 1 | Used internally to identify deleted objects |
|
|
| STORAGE_GROUP | 2 | StorageGroup information |
|
|
|
|
|
|
<!-- 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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