| #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.Linq; |
| using Grpc.Core.Internal; |
| using Grpc.Core.Utils; |
| |
| namespace Grpc.Core.Internal |
| { |
| internal interface IServerCallHandler |
| { |
| void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq); |
| } |
| |
| internal class UnaryRequestServerCallHandler<TRequest, TResponse> : IServerCallHandler |
| { |
| readonly Method<TRequest, TResponse> method; |
| readonly UnaryRequestServerMethod<TRequest, TResponse> handler; |
| |
| public UnaryRequestServerCallHandler(Method<TRequest, TResponse> method, UnaryRequestServerMethod<TRequest, TResponse> handler) |
| { |
| this.method = method; |
| this.handler = handler; |
| } |
| |
| public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq) |
| { |
| var asyncCall = new AsyncCallServer<TRequest, TResponse>( |
| method.ResponseMarshaller.Serializer, |
| method.RequestMarshaller.Deserializer); |
| |
| asyncCall.Initialize(call); |
| |
| var requestObserver = new RecordingObserver<TRequest>(); |
| var finishedTask = asyncCall.ServerSideCallAsync(requestObserver); |
| |
| var request = requestObserver.ToList().Result.Single(); |
| var responseObserver = new ServerStreamingOutputObserver<TRequest, TResponse>(asyncCall); |
| handler(request, responseObserver); |
| |
| finishedTask.Wait(); |
| } |
| } |
| |
| internal class StreamingRequestServerCallHandler<TRequest, TResponse> : IServerCallHandler |
| { |
| readonly Method<TRequest, TResponse> method; |
| readonly StreamingRequestServerMethod<TRequest, TResponse> handler; |
| |
| public StreamingRequestServerCallHandler(Method<TRequest, TResponse> method, StreamingRequestServerMethod<TRequest, TResponse> handler) |
| { |
| this.method = method; |
| this.handler = handler; |
| } |
| |
| public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq) |
| { |
| var asyncCall = new AsyncCallServer<TRequest, TResponse>( |
| method.ResponseMarshaller.Serializer, |
| method.RequestMarshaller.Deserializer); |
| |
| asyncCall.Initialize(call); |
| |
| var responseObserver = new ServerStreamingOutputObserver<TRequest, TResponse>(asyncCall); |
| var requestObserver = handler(responseObserver); |
| var finishedTask = asyncCall.ServerSideCallAsync(requestObserver); |
| finishedTask.Wait(); |
| } |
| } |
| |
| internal class NoSuchMethodCallHandler : IServerCallHandler |
| { |
| public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq) |
| { |
| // We don't care about the payload type here. |
| var asyncCall = new AsyncCallServer<byte[], byte[]>( |
| (payload) => payload, (payload) => payload); |
| |
| asyncCall.Initialize(call); |
| |
| var finishedTask = asyncCall.ServerSideCallAsync(new NullObserver<byte[]>()); |
| |
| // TODO: check result of the completion status. |
| asyncCall.StartSendStatusFromServer(new Status(StatusCode.Unimplemented, "No such method."), new AsyncCompletionDelegate((error) => { })); |
| |
| finishedTask.Wait(); |
| } |
| } |
| |
| internal class NullObserver<T> : IObserver<T> |
| { |
| public void OnCompleted() |
| { |
| } |
| |
| public void OnError(Exception error) |
| { |
| } |
| |
| public void OnNext(T value) |
| { |
| } |
| } |
| } |