1 #region Copyright notice and license 2 // Copyright 2015 gRPC authors. 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 #endregion 16 17 #if GRPC_SUPPORT_WATCH 18 using System.Threading.Channels; 19 using System.Threading.Tasks; 20 21 using Grpc.Core; 22 using Grpc.Health.V1; 23 24 namespace Grpc.HealthCheck.Tests 25 { 26 internal class TestResponseStreamWriter : IServerStreamWriter<HealthCheckResponse> 27 { 28 private readonly Channel<HealthCheckResponse> _channel; 29 private readonly TaskCompletionSource<object> _startTcs; 30 TestResponseStreamWriter(int maxCapacity = 1, bool started = true)31 public TestResponseStreamWriter(int maxCapacity = 1, bool started = true) 32 { 33 _channel = System.Threading.Channels.Channel.CreateBounded<HealthCheckResponse>(new BoundedChannelOptions(maxCapacity) { 34 SingleReader = false, 35 SingleWriter = true, 36 FullMode = BoundedChannelFullMode.Wait 37 }); 38 if (!started) 39 { 40 _startTcs = new TaskCompletionSource<object>(TaskCreationOptions.RunContinuationsAsynchronously); 41 } 42 } 43 44 public ChannelReader<HealthCheckResponse> WrittenMessagesReader => _channel.Reader; 45 46 public WriteOptions WriteOptions { get; set; } 47 WriteAsync(HealthCheckResponse message)48 public async Task WriteAsync(HealthCheckResponse message) 49 { 50 if (_startTcs != null) 51 { 52 await _startTcs.Task; 53 } 54 55 await _channel.Writer.WriteAsync(message); 56 } 57 Start()58 public void Start() 59 { 60 if (_startTcs != null) 61 { 62 _startTcs.TrySetResult(null); 63 } 64 } 65 Complete()66 public void Complete() 67 { 68 _channel.Writer.Complete(); 69 } 70 } 71 } 72 #endif 73