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// An integration test service that covers all the method signature permutations
// of unary/streaming requests/responses.
syntax = "proto2";

package grpc.testing;

enum PayloadType {
  // Compressable text format.
  COMPRESSABLE= 1;

  // Uncompressable binary format.
  UNCOMPRESSABLE = 2;

  // Randomly chosen from all other formats defined in this enum.
  RANDOM = 3;
}

message StatsRequest {
  // run number
  optional int32 test_num = 1;
}

message ServerStats {
  // wall clock time
  required double time_elapsed = 1;

  // user time used by the server process and threads
  required double time_user = 2;

  // server time used by the server process and all threads
  required double time_system = 3;
}

message Payload {
  // The type of data in body.
  optional PayloadType type = 1;
  // Primary contents of payload.
  optional bytes body = 2;
}

message HistogramData {
  repeated uint32 bucket = 1;
  required double min_seen = 2;
  required double max_seen = 3;
  required double sum = 4;
  required double sum_of_squares = 5;
  required double count = 6;
}

enum ClientType {
  SYNCHRONOUS_CLIENT = 1;
  ASYNC_CLIENT = 2;
}

enum ServerType {
  SYNCHRONOUS_SERVER = 1;
  ASYNC_SERVER = 2;
}

enum RpcType {
  UNARY = 1;
  STREAMING = 2;
}

message ClientConfig {
  repeated string server_targets = 1;
  required ClientType client_type = 2;
  optional bool enable_ssl = 3 [default=false];
  required int32 outstanding_rpcs_per_channel = 4;
  required int32 client_channels = 5;
  required int32 payload_size = 6;
  // only for async client:
  optional int32 async_client_threads = 7;
  optional RpcType rpc_type = 8 [default=UNARY];
  optional string host = 9;
}

// Request current stats
message Mark {}

message ClientArgs {
  oneof argtype {
    ClientConfig setup = 1;
    Mark mark = 2;
  }
}

message ClientStats {
  required HistogramData latencies = 1;
  required double time_elapsed = 3;
  required double time_user = 4;
  required double time_system = 5;
}

message ClientStatus {
  optional ClientStats stats = 1;
}

message ServerConfig {
  required ServerType server_type = 1;
  optional int32 threads = 2 [default=1];
  optional bool enable_ssl = 3 [default=false];
  optional string host = 4;
}

message ServerArgs {
  oneof argtype {
    ServerConfig setup = 1;
    Mark mark = 2;
  }
}

message ServerStatus {
  optional ServerStats stats = 1;
  required int32 port = 2;
}

message SimpleRequest {
  // Desired payload type in the response from the server.
  // If response_type is RANDOM, server randomly chooses one from other formats.
  optional PayloadType response_type = 1 [default=COMPRESSABLE];

  // Desired payload size in the response from the server.
  // If response_type is COMPRESSABLE, this denotes the size before compression.
  optional int32 response_size = 2 [default=0];

  // Optional input payload sent along with the request.
  optional Payload payload = 3;
}

message SimpleResponse {
  optional Payload payload = 1;
}

service TestService {
  // One request followed by one response.
  // The server returns the client payload as-is.
  rpc UnaryCall(SimpleRequest) returns (SimpleResponse);

  // One request followed by one response.
  // The server returns the client payload as-is.
  rpc StreamingCall(stream SimpleRequest) returns (stream SimpleResponse);
}

service Worker {
  // Start test with specified workload
  rpc RunTest(stream ClientArgs) returns (stream ClientStatus);
  // Start test with specified workload
  rpc RunServer(stream ServerArgs) returns (stream ServerStatus);
}
