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// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Message definitions to be used by integration test service definitions.

syntax = "proto3";

package grpc.testing;

// The type of payload that should be returned.
enum PayloadType {
  // Compressable text format.
  COMPRESSABLE = 0;

  // Uncompressable binary format.
  UNCOMPRESSABLE = 1;

  // Randomly chosen from all other formats defined in this enum.
  RANDOM = 2;
}

// Compression algorithms
enum CompressionType {
  // No compression
  NONE = 0;
  GZIP = 1;
  DEFLATE = 2;
}

// A block of data, to simply increase gRPC message size.
message Payload {
  // The type of data in body.
  PayloadType type = 1;
  // Primary contents of payload.
  bytes body = 2;
}

// A protobuf representation for grpc status. This is used by test
// clients to specify a status that the server should attempt to return.
message EchoStatus {
  int32 code = 1;
  string message = 2;
}

// Unary request.
message SimpleRequest {
  // Desired payload type in the response from the server.
  // If response_type is RANDOM, server randomly chooses one from other formats.
  PayloadType response_type = 1;

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

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

  // Whether SimpleResponse should include username.
  bool fill_username = 4;

  // Whether SimpleResponse should include OAuth scope.
  bool fill_oauth_scope = 5;

  // Compression algorithm to be used by the server for the response (stream)
  CompressionType response_compression = 6;

  // Whether server should return a given status
  EchoStatus response_status = 7;
}

// Unary response, as configured by the request.
message SimpleResponse {
  // Payload to increase message size.
  Payload payload = 1;
  // The user the request came from, for verifying authentication was
  // successful when the client expected it.
  string username = 2;
  // OAuth scope.
  string oauth_scope = 3;
}

// Client-streaming request.
message StreamingInputCallRequest {
  // Optional input payload sent along with the request.
  Payload payload = 1;

  // Not expecting any payload from the response.
}

// Client-streaming response.
message StreamingInputCallResponse {
  // Aggregated size of payloads received from the client.
  int32 aggregated_payload_size = 1;
}

// Configuration for a particular response.
message ResponseParameters {
  // Desired payload sizes in responses from the server.
  // If response_type is COMPRESSABLE, this denotes the size before compression.
  int32 size = 1;

  // Desired interval between consecutive responses in the response stream in
  // microseconds.
  int32 interval_us = 2;
}

// Server-streaming request.
message StreamingOutputCallRequest {
  // Desired payload type in the response from the server.
  // If response_type is RANDOM, the payload from each response in the stream
  // might be of different types. This is to simulate a mixed type of payload
  // stream.
  PayloadType response_type = 1;

  // Configuration for each expected response message.
  repeated ResponseParameters response_parameters = 2;

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

  // Compression algorithm to be used by the server for the response (stream)
  CompressionType response_compression = 6;

  // Whether server should return a given status
  EchoStatus response_status = 7;
}

// Server-streaming response, as configured by the request and parameters.
message StreamingOutputCallResponse {
  // Payload to increase response size.
  Payload payload = 1;
}

// For reconnect interop test only.
// Server tells client whether its reconnects are following the spec and the
// reconnect backoffs it saw.
message ReconnectInfo {
  bool passed = 1;
  repeated int32 backoff_ms = 2;
}