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#region Copyright notice and license
// Copyright 2015-2016 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Google.Protobuf;
using Grpc.Core;
using Grpc.Core.Utils;
namespace Grpc.Testing
{
/// <summary>
/// Implementation of TestService server
/// </summary>
public class TestServiceImpl : TestService.TestServiceBase
{
public override Task<Empty> EmptyCall(Empty request, ServerCallContext context)
{
return Task.FromResult(new Empty());
}
public override async Task<SimpleResponse> UnaryCall(SimpleRequest request, ServerCallContext context)
{
await EnsureEchoMetadataAsync(context);
EnsureEchoStatus(request.ResponseStatus, context);
var response = new SimpleResponse { Payload = CreateZerosPayload(request.ResponseSize) };
return response;
}
public override async Task StreamingOutputCall(StreamingOutputCallRequest request, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
{
await EnsureEchoMetadataAsync(context);
EnsureEchoStatus(request.ResponseStatus, context);
foreach (var responseParam in request.ResponseParameters)
{
var response = new StreamingOutputCallResponse { Payload = CreateZerosPayload(responseParam.Size) };
await responseStream.WriteAsync(response);
}
}
public override async Task<StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<StreamingInputCallRequest> requestStream, ServerCallContext context)
{
await EnsureEchoMetadataAsync(context);
int sum = 0;
await requestStream.ForEachAsync(request =>
{
sum += request.Payload.Body.Length;
return TaskUtils.CompletedTask;
});
return new StreamingInputCallResponse { AggregatedPayloadSize = sum };
}
public override async Task FullDuplexCall(IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
{
await EnsureEchoMetadataAsync(context);
await requestStream.ForEachAsync(async request =>
{
EnsureEchoStatus(request.ResponseStatus, context);
foreach (var responseParam in request.ResponseParameters)
{
var response = new StreamingOutputCallResponse { Payload = CreateZerosPayload(responseParam.Size) };
await responseStream.WriteAsync(response);
}
});
}
public override Task HalfDuplexCall(IAsyncStreamReader<StreamingOutputCallRequest> requestStream, IServerStreamWriter<StreamingOutputCallResponse> responseStream, ServerCallContext context)
{
throw new NotImplementedException();
}
private static Payload CreateZerosPayload(int size)
{
return new Payload { Body = ByteString.CopyFrom(new byte[size]) };
}
private static async Task EnsureEchoMetadataAsync(ServerCallContext context)
{
var echoInitialList = context.RequestHeaders.Where((entry) => entry.Key == "x-grpc-test-echo-initial").ToList();
if (echoInitialList.Any()) {
var entry = echoInitialList.Single();
await context.WriteResponseHeadersAsync(new Metadata { entry });
}
var echoTrailingList = context.RequestHeaders.Where((entry) => entry.Key == "x-grpc-test-echo-trailing-bin").ToList();
if (echoTrailingList.Any()) {
context.ResponseTrailers.Add(echoTrailingList.Single());
}
}
private static void EnsureEchoStatus(EchoStatus responseStatus, ServerCallContext context)
{
if (responseStatus != null)
{
var statusCode = (StatusCode)responseStatus.Code;
context.Status = new Status(statusCode, responseStatus.Message);
}
}
}
}
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