| #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.Concurrent; |
| using System.Collections.Generic; |
| using System.Threading.Tasks; |
| |
| namespace Grpc.Core.Utils |
| { |
| // TODO: replace this by something that implements IAsyncEnumerator. |
| /// <summary> |
| /// Observer that allows us to await incoming messages one-by-one. |
| /// The implementation is not ideal and class will be probably replaced |
| /// by something more versatile in the future. |
| /// </summary> |
| public class RecordingQueue<T> : IObserver<T> |
| { |
| readonly BlockingCollection<T> queue = new BlockingCollection<T>(); |
| TaskCompletionSource<object> tcs = new TaskCompletionSource<object>(); |
| |
| public void OnCompleted() |
| { |
| tcs.SetResult(null); |
| } |
| |
| public void OnError(Exception error) |
| { |
| tcs.SetException(error); |
| } |
| |
| public void OnNext(T value) |
| { |
| queue.Add(value); |
| } |
| |
| public BlockingCollection<T> Queue |
| { |
| get |
| { |
| return queue; |
| } |
| } |
| |
| public Task Finished |
| { |
| get |
| { |
| return tcs.Task; |
| } |
| } |
| } |
| } |