syntax = "proto3";

enum TrpcMagic {
  TRPC_DEFAULT_NONE = 0x00;
  TRPC_MAGIC_VALUE = 0x930;
}

enum TrpcDataFrameType {
  TRPC_UNARY_FRAME = 0x00;
  TRPC_STREAM_FRAME = 0x01;
}

enum TrpcDataFrameState {
  TRPC_NO_STATE = 0x00;
  TRPC_STREAM_FINISH = 0x01;
}

enum TrpcProtoVersion {
  TRPC_PROTO_V1  = 0;
}

enum TrpcCallType {
  TRPC_UNARY_CALL = 0;
  TRPC_ONEWAY_CALL = 1;
  TRPC_CLIENT_STREAM_CALL = 2;
  TRPC_SERVER_STREAM_CALL = 3;
  TRPC_BIDI_STREAM_CALL = 4;
}
enum TrpcMessageType {
  TRPC_DEFAULT = 0x00;
  TRPC_DYEING_MESSAGE = 0x01;
  TRPC_TRACE_MESSAGE = 0x02;
  TRPC_MULTI_ENV_MESSAGE = 0x04;
  TRPC_GRID_MESSAGE = 0x08;
  TRPC_SETNAME_MESSAGE = 0x10;
}

enum TrpcContentEncodeType {
  TRPC_PROTO_ENCODE = 0;
  TRPC_JCE_ENCODE = 1;
  TRPC_JSON_ENCODE = 2;
  TRPC_FLATBUFFER_ENCODE = 3;
  TRPC_NOOP_ENCODE = 4;
}

enum TrpcCompressType {
  TRPC_DEFAULT_COMPRESS = 0;
  TRPC_GZIP_COMPRESS = 1;
  TRPC_SNAPPY_COMPRESS = 2;
  // srpc framework support zlib and lz4
  TRPC_ZLIB_COMPRESS = 3;
  TRPC_LZ4_COMPRESS = 4;
}

enum TrpcRetCode {
  TRPC_INVOKE_SUCCESS = 0;
  TRPC_SERVER_DECODE_ERR = 1;
  TRPC_SERVER_ENCODE_ERR = 2;

  TRPC_SERVER_NOSERVICE_ERR = 11;
  TRPC_SERVER_NOFUNC_ERR = 12;

  TRPC_SERVER_TIMEOUT_ERR = 21;
  TRPC_SERVER_OVERLOAD_ERR = 22;

  TRPC_SERVER_SYSTEM_ERR = 31;

  TRPC_SERVER_AUTH_ERR = 41;

  TRPC_CLIENT_INVOKE_TIMEOUT_ERR = 101;

  TRPC_CLIENT_CONNECT_ERR = 111;

  TRPC_CLIENT_ENCODE_ERR = 121;
  TRPC_CLIENT_DECODE_ERR = 122;

  TRPC_CLIENT_ROUTER_ERR = 131;

  TRPC_CLINET_NETWORK_ERR = 141;

  TRPC_INVOKE_UNKNOWN_ERR = 999;
}

message RequestProtocol {
  uint32    version                     = 1;
  uint32    call_type                   = 2;
  uint32    request_id                  = 3;
  uint32    timeout                     = 4;
  bytes     caller                      = 5;
  bytes     callee                      = 6;
  bytes     func                        = 7;
  uint32    message_type                = 8;
  map<string, bytes> trans_info         = 9;
  uint32    content_type                = 10;
  uint32    content_encoding            = 11;
}

message ResponseProtocol {
  uint32    version                     = 1;
  uint32    call_type                   = 2;
  uint32    request_id                  = 3;
  int32     ret                         = 4;
  int32     func_ret                    = 5;
  bytes     error_msg                   = 6;
  uint32    message_type                = 7;
  map<string, bytes> trans_info         = 8;
  uint32    content_type                = 9;
  uint32    content_encoding            = 10;
}