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#region Copyright notice and license |
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|
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// Copyright 2015, Google Inc. |
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// All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google Inc. nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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#endregion |
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using System; |
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using System.Runtime.CompilerServices; |
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using System.Threading.Tasks; |
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namespace Grpc.Core |
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{ |
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/// <summary> |
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/// Return type for single request - single response call. |
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/// </summary> |
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public sealed class AsyncUnaryCall<TResponse> : IDisposable |
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{ |
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readonly Task<TResponse> responseAsync; |
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readonly Func<Status> getStatusFunc; |
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readonly Func<Metadata> getTrailersFunc; |
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readonly Action disposeAction; |
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|
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public AsyncUnaryCall(Task<TResponse> responseAsync, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction) |
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{ |
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this.responseAsync = responseAsync; |
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this.getStatusFunc = getStatusFunc; |
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this.getTrailersFunc = getTrailersFunc; |
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this.disposeAction = disposeAction; |
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} |
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|
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/// <summary> |
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/// Asynchronous call result. |
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/// </summary> |
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public Task<TResponse> ResponseAsync |
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{ |
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get |
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{ |
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return this.responseAsync; |
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} |
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} |
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|
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/// <summary> |
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/// Allows awaiting this object directly. |
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/// </summary> |
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public TaskAwaiter<TResponse> GetAwaiter() |
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{ |
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return responseAsync.GetAwaiter(); |
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} |
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|
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/// <summary> |
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/// Gets the call status if the call has already finished. |
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/// Throws InvalidOperationException otherwise. |
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/// </summary> |
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public Status GetStatus() |
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{ |
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return getStatusFunc(); |
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} |
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|
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/// <summary> |
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/// Gets the call trailing metadata if the call has already finished. |
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/// Throws InvalidOperationException otherwise. |
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/// </summary> |
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public Metadata GetTrailers() |
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{ |
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return getTrailersFunc(); |
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} |
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|
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/// <summary> |
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/// Provides means to cleanup after the call. |
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/// If the call has already finished normally (request stream has been completed and call result has been received), doesn't do anything. |
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/// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call. |
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/// As a result, all resources being used by the call should be released eventually. |
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/// </summary> |
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public void Dispose() |
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{ |
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disposeAction.Invoke(); |
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} |
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} |
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} |
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