object: Remove response meta header

This commit removes ResponseMetaHeader from the repository since it is not
verifiable and its purpose is questionable. If needed, it can be added to
queries without losing compatibility with the API version.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

object/service.proto

@@ -71,9 +71,6 @@ message GetResponse {
         // Chunk of remaining payload
         bytes Chunk   = 2;
     }
-
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 
 message PutRequest {
@@ -100,8 +97,6 @@ message PutRequest {
 message PutResponse {
     // Address of object (container id + object id)
     refs.Address Address = 1;
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 message DeleteRequest {
     // Address of object (container id + object id)
@@ -117,8 +112,6 @@ message DeleteRequest {
 // DeleteResponse is empty because we cannot guarantee permanent object removal
 // in distributed system.
 message DeleteResponse {
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 
 message HeadRequest {
@@ -138,8 +131,6 @@ message HeadRequest {
 message HeadResponse {
     // Object without payload
     Object Object = 1;
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 
 message SearchRequest {
@@ -176,8 +167,6 @@ message SearchRequest {
 message SearchResponse {
     // Addresses of found objects
     repeated refs.Address Addresses = 1;
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 
 message Range {
@@ -201,8 +190,6 @@ message GetRangeRequest {
 message GetRangeResponse {
     // Fragment of object's payload
     bytes Fragment = 1;
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 
 message GetRangeHashRequest {
@@ -221,7 +208,5 @@ message GetRangeHashRequest {
 message GetRangeHashResponse {
     // Hashes is a homomorphic hashes of all ranges
     repeated bytes Hashes = 1;
-    // ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message)
-    service.ResponseMetaHeader Meta = 99;
 }
 

proto-docs/object.md

@@ -161,10 +161,6 @@ DeleteResponse is empty because we cannot guarantee permanent object removal
 in distributed system.
 
 
-| Field | Type | Label | Description |
-| ----- | ---- | ----- | ----------- |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
-
 
 <a name="object.GetRangeHashRequest"></a>
 
@@ -190,7 +186,6 @@ in distributed system.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | Hashes | [bytes](#bytes) | repeated | Hashes is a homomorphic hashes of all ranges |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
 <a name="object.GetRangeRequest"></a>
@@ -216,7 +211,6 @@ in distributed system.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | Fragment | [bytes](#bytes) |  | Fragment of object's payload |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
 <a name="object.GetRequest"></a>
@@ -243,7 +237,6 @@ in distributed system.
 | ----- | ---- | ----- | ----------- |
 | object | [Object](#object.Object) |  | Object header and some payload |
 | Chunk | [bytes](#bytes) |  | Chunk of remaining payload |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
 <a name="object.HeadRequest"></a>
@@ -270,7 +263,6 @@ in distributed system.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | Object | [Object](#object.Object) |  | Object without payload |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
 <a name="object.PutRequest"></a>
@@ -308,7 +300,6 @@ in distributed system.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | Address | [refs.Address](#refs.Address) |  | Address of object (container id + object id) |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
 <a name="object.Range"></a>
@@ -371,7 +362,6 @@ in distributed system.
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | Addresses | [refs.Address](#refs.Address) | repeated | Addresses of found objects |
-| Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
  <!-- end messages -->
 

proto-docs/service.md

@@ -9,7 +9,6 @@
     - [RequestExtendedHeader](#service.RequestExtendedHeader)
     - [RequestExtendedHeader.KV](#service.RequestExtendedHeader.KV)
     - [RequestMetaHeader](#service.RequestMetaHeader)
-    - [ResponseMetaHeader](#service.ResponseMetaHeader)
     
 
 - [service/verify.proto](#service/verify.proto)
@@ -74,19 +73,6 @@ RequestMetaHeader contains information about request meta headers
 | Version | [uint32](#uint32) |  | Version defines protocol version TODO: not used for now, should be implemented in future |
 | ExtendedHeader | [RequestExtendedHeader](#service.RequestExtendedHeader) |  | ExtendedHeader carries extended headers of the request |
 
-
-<a name="service.ResponseMetaHeader"></a>
-
-### Message ResponseMetaHeader
-ResponseMetaHeader contains meta information based on request processing by server
-(should be embedded into message)
-
-
-| Field | Type | Label | Description |
-| ----- | ---- | ----- | ----------- |
-| Epoch | [uint64](#uint64) |  | Current NeoFS epoch on server |
-| Version | [uint32](#uint32) |  | Version defines protocol version TODO: not used for now, should be implemented in future |
-
  <!-- end messages -->
 
  <!-- end enums -->

service/meta.proto

@@ -17,16 +17,6 @@ message RequestMetaHeader {
     RequestExtendedHeader ExtendedHeader = 5;
 }
 
-// ResponseMetaHeader contains meta information based on request processing by server
-// (should be embedded into message)
-message ResponseMetaHeader {
-    // Current NeoFS epoch on server
-    uint64 Epoch   = 1;
-    // Version defines protocol version
-    // TODO: not used for now, should be implemented in future
-    uint32 Version = 2;
-}
-
 // RequestExtendedHeader contains extended headers of request
 message RequestExtendedHeader {
     // KV contains string key-value pair