add protobuf for coprocessor_v2

Signed-off-by: Alex.F <gfreezy@gmail.com>

mock-tikv/src/server.rs

@@ -513,4 +513,13 @@ impl Tikv for MockTikv {
     ) {
         todo!()
     }
+
+    fn coprocessor_v2(
+        &mut self,
+        _: grpcio::RpcContext,
+        _: tikv_client_proto::coprocessor_v2::RawCoprocessorRequest,
+        _: grpcio::UnarySink<tikv_client_proto::coprocessor_v2::RawCoprocessorResponse>,
+    ) {
+        todo!()
+    }
 }

tikv-client-proto/proto/coprocessor_v2.proto

@@ -0,0 +1,33 @@
+syntax = "proto3";
+package coprocessor_v2;
+
+import "errorpb.proto";
+import "kvrpcpb.proto";
+import "gogoproto/gogo.proto";
+import "rustproto.proto";
+
+option (gogoproto.marshaler_all) = true;
+option (gogoproto.sizer_all) = true;
+option (gogoproto.unmarshaler_all) = true;
+option (rustproto.lite_runtime_all) = true;
+
+option java_package = "org.tikv.kvproto";
+
+message RawCoprocessorRequest {
+    kvrpcpb.Context context = 1;
+
+    string copr_name = 2;
+    string copr_version_constraint = 3;
+
+    bytes data = 4;
+}
+
+message RawCoprocessorResponse {
+    bytes data = 1;
+
+    errorpb.Error region_error = 2;
+
+    // Error message for cases like if no coprocessor with a matching name is found
+    // or on a version mismatch between plugin_api and the coprocessor.
+    string other_error = 4;
+}

tikv-client-proto/proto/tikvpb.proto

@@ -2,6 +2,7 @@ syntax = "proto3";
 package tikvpb;
 
 import "coprocessor.proto";
+import "coprocessor_v2.proto";
 import "kvrpcpb.proto";
 import "mpp.proto";
 import "raft_serverpb.proto";
@@ -69,6 +70,9 @@ service Tikv {
     rpc CoprocessorStream(coprocessor.Request)  returns (stream coprocessor.Response) {}
     rpc BatchCoprocessor(coprocessor.BatchRequest) returns (stream coprocessor.BatchResponse) {}
 
+    // Command for executing custom user requests in TiKV coprocessor_v2.
+    rpc CoprocessorV2(coprocessor_v2.RawCoprocessorRequest) returns (coprocessor_v2.RawCoprocessorResponse) {}
+
     // Raft commands (sent between TiKV nodes).
     rpc Raft(stream raft_serverpb.RaftMessage) returns (raft_serverpb.Done) {}
     rpc BatchRaft(stream BatchRaftMessage) returns (raft_serverpb.Done) {}
@@ -92,7 +96,7 @@ service Tikv {
     rpc EstablishMPPConnection(mpp.EstablishMPPConnectionRequest) returns (stream mpp.MPPDataPacket) {}
 
     /// CheckLeader sends all information (includes region term and epoch) to other stores.
-    /// Once a store receives a request, it checks term and epoch for each region, and sends the regions whose 
+    /// Once a store receives a request, it checks term and epoch for each region, and sends the regions whose
     /// term and epoch match with local information in the store.
     /// After the client collected all responses from all stores, it checks if got a quorum of responses from
     /// other stores for every region, and decides to advance resolved ts from these regions.
@@ -144,6 +148,8 @@ message BatchCommandsRequest {
 
             kvrpcpb.CheckSecondaryLocksRequest CheckSecondaryLocks = 33;
 
+            coprocessor_v2.RawCoprocessorRequest CoprocessorV2 = 34;
+
             // For some test cases.
             BatchCommandsEmptyRequest Empty = 255;
         }
@@ -197,6 +203,8 @@ message BatchCommandsResponse {
 
             kvrpcpb.CheckSecondaryLocksResponse CheckSecondaryLocks = 33;
 
+            coprocessor_v2.RawCoprocessorResponse CoprocessorV2 = 34;
+
             // For some test cases.
             BatchCommandsEmptyResponse Empty = 255;
         }
@@ -217,4 +225,4 @@ message BatchCommandsEmptyRequest {
 message BatchCommandsEmptyResponse {
     // ID of the test request.
     uint64 test_id = 1;
-}
+}

tikv-client-proto/src/lib.rs

@@ -1,7 +1,9 @@
 // Copyright 2020 TiKV Project Authors. Licensed under Apache-2.0.
 
 use protos::*;
-pub use protos::{coprocessor, errorpb, kvrpcpb, metapb, mpp, pdpb, raft_serverpb, tikvpb};
+pub use protos::{
+    coprocessor, coprocessor_v2, errorpb, kvrpcpb, metapb, mpp, pdpb, raft_serverpb, tikvpb,
+};
 
 #[allow(dead_code)]
 #[allow(clippy::all)]