Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.IntegrationTesting/TestServiceImpl.cs

+#region Copyright notice and license
+
+// 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.
+
+#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.ITestService
+    {
+        public Task<Empty> EmptyCall(Empty request, ServerCallContext context)
+        {
+            return Task.FromResult(new Empty());
+        }
+
+        public 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 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 async Task<StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<StreamingInputCallRequest> requestStream, ServerCallContext context)
+        {
+            await EnsureEchoMetadataAsync(context);
+
+            int sum = 0;
+            await requestStream.ForEachAsync(async request =>
+            {
+                sum += request.Payload.Body.Length;
+            });
+            return new StreamingInputCallResponse { AggregatedPayloadSize = sum };
+        }
+
+        public 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 async 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);
+            }
+        }
+    }
+}