protocol/src/main/protobuf/GeneralRPC.proto


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package exec.rpc;

option java_package = "org.apache.drill.exec.proto";
option java_outer_classname = "GeneralRPCProtos";
option optimize_for = SPEED;

import "Coordination.proto";

message Ack{
	optional bool ok = 1;
}

enum RpcMode {
  REQUEST = 0;
  RESPONSE = 1;
  RESPONSE_FAILURE = 2;
  PING = 3;
  PONG = 4;
}

message RpcHeader{
	optional RpcMode mode = 1;
	optional int32 coordination_id = 2; // reusable coordination identifier.  Sender defines.  Server returns on return.  Irrelevant for purely single direction rpc.
	optional int32 rpc_type = 3; // a rpc mode specific rpc type.
}

message CompleteRpcMessage {
    optional RpcHeader header = 1; // required
    optional bytes protobuf_body = 2; // required
    optional bytes raw_body = 3; // optional
}