| #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.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core.Internal; |
| |
| namespace Grpc.Core |
| { |
| /// <summary> |
| /// Helper methods for generated clients to make RPC calls. |
| /// </summary> |
| public static class Calls |
| { |
| public static TResponse BlockingUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token) |
| where TRequest : class |
| where TResponse : class |
| { |
| var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer); |
| // TODO(jtattermusch): this gives a race that cancellation can be requested before the call even starts. |
| RegisterCancellationCallback(asyncCall, token); |
| return asyncCall.UnaryCall(call.Channel, call.Name, req, call.Headers); |
| } |
| |
| public static AsyncUnaryCall<TResponse> AsyncUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token) |
| where TRequest : class |
| where TResponse : class |
| { |
| var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer); |
| asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name); |
| var asyncResult = asyncCall.UnaryCallAsync(req, call.Headers); |
| RegisterCancellationCallback(asyncCall, token); |
| return new AsyncUnaryCall<TResponse>(asyncResult, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel); |
| } |
| |
| public static AsyncServerStreamingCall<TResponse> AsyncServerStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token) |
| where TRequest : class |
| where TResponse : class |
| { |
| var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer); |
| asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name); |
| asyncCall.StartServerStreamingCall(req, call.Headers); |
| RegisterCancellationCallback(asyncCall, token); |
| var responseStream = new ClientResponseStream<TRequest, TResponse>(asyncCall); |
| return new AsyncServerStreamingCall<TResponse>(responseStream, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel); |
| } |
| |
| public static AsyncClientStreamingCall<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, CancellationToken token) |
| where TRequest : class |
| where TResponse : class |
| { |
| var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer); |
| asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name); |
| var resultTask = asyncCall.ClientStreamingCallAsync(call.Headers); |
| RegisterCancellationCallback(asyncCall, token); |
| var requestStream = new ClientRequestStream<TRequest, TResponse>(asyncCall); |
| return new AsyncClientStreamingCall<TRequest, TResponse>(requestStream, resultTask, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel); |
| } |
| |
| public static AsyncDuplexStreamingCall<TRequest, TResponse> AsyncDuplexStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, CancellationToken token) |
| where TRequest : class |
| where TResponse : class |
| { |
| var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestMarshaller.Serializer, call.ResponseMarshaller.Deserializer); |
| asyncCall.Initialize(call.Channel, call.Channel.CompletionQueue, call.Name); |
| asyncCall.StartDuplexStreamingCall(call.Headers); |
| RegisterCancellationCallback(asyncCall, token); |
| var requestStream = new ClientRequestStream<TRequest, TResponse>(asyncCall); |
| var responseStream = new ClientResponseStream<TRequest, TResponse>(asyncCall); |
| return new AsyncDuplexStreamingCall<TRequest, TResponse>(requestStream, responseStream, asyncCall.GetStatus, asyncCall.GetTrailers, asyncCall.Cancel); |
| } |
| |
| private static void RegisterCancellationCallback<TRequest, TResponse>(AsyncCall<TRequest, TResponse> asyncCall, CancellationToken token) |
| { |
| if (token.CanBeCanceled) |
| { |
| token.Register(() => asyncCall.Cancel()); |
| } |
| } |
| } |
| } |