| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System; |
| | | 5 | | using System.IO.Pipelines; |
| | | 6 | | using System.Threading; |
| | | 7 | | using System.Threading.Tasks; |
| | | 8 | | using CoreWCF.Configuration; |
| | | 9 | | using CoreWCF.Queue.Common; |
| | | 10 | | using Microsoft.Extensions.DependencyInjection; |
| | | 11 | | using Microsoft.Extensions.Logging; |
| | | 12 | | using MSMQ.Messaging; |
| | | 13 | | using MSMQM = MSMQ.Messaging; |
| | | 14 | | |
| | | 15 | | namespace CoreWCF.Channels |
| | | 16 | | { |
| | | 17 | | public class MsmqQueueTransport : IQueueTransport, IDisposable |
| | | 18 | | { |
| | | 19 | | private readonly Uri _baseAddress; |
| | | 20 | | private readonly MessageQueue _messageQueue; |
| | | 21 | | private readonly TimeSpan _queueReceiveTimeOut; |
| | | 22 | | private readonly DeadLetterQueueSender _deadLetterQueueSender; |
| | | 23 | | private readonly ILogger<MsmqQueueTransport> _logger; |
| | | 24 | | |
| | 0 | 25 | | public MsmqQueueTransport(IServiceDispatcher serviceDispatcher, IServiceProvider serviceProvider) |
| | | 26 | | { |
| | 0 | 27 | | _deadLetterQueueSender = new DeadLetterQueueSender(); |
| | 0 | 28 | | _baseAddress = serviceDispatcher.BaseAddress; |
| | 0 | 29 | | string nativeQueueName = MsmqQueueNameConverter.GetMsmqFormatQueueName(_baseAddress); |
| | 0 | 30 | | _messageQueue = new MessageQueue(nativeQueueName); |
| | 0 | 31 | | _queueReceiveTimeOut = serviceDispatcher.Binding.ReceiveTimeout; |
| | 0 | 32 | | _logger = serviceProvider.GetRequiredService<ILogger<MsmqQueueTransport>>(); |
| | 0 | 33 | | } |
| | | 34 | | |
| | 0 | 35 | | public int ConcurrencyLevel => 1; |
| | | 36 | | |
| | | 37 | | public async ValueTask<QueueMessageContext> ReceiveQueueMessageContextAsync(CancellationToken cancellationToken) |
| | | 38 | | { |
| | 0 | 39 | | cancellationToken.ThrowIfCancellationRequested(); |
| | 0 | 40 | | _logger.LogInformation("Receiving message from msmq"); |
| | 0 | 41 | | var message = await Task.Factory.FromAsync(MessageQueueBeginReceive, |
| | 0 | 42 | | MessageQueueEndReceive, _messageQueue, _queueReceiveTimeOut, null); |
| | | 43 | | |
| | 0 | 44 | | if(message == null) |
| | 0 | 45 | | return null; |
| | | 46 | | |
| | 0 | 47 | | var reader = PipeReader.Create(message.BodyStream); |
| | | 48 | | try |
| | | 49 | | { |
| | 0 | 50 | | await MsmqDecodeHelper.DecodeTransportDatagram(reader); |
| | 0 | 51 | | } |
| | | 52 | | catch (MsmqPoisonMessageException) |
| | | 53 | | { |
| | 0 | 54 | | await _deadLetterQueueSender.SendToSystem(reader, _baseAddress); |
| | 0 | 55 | | return null; |
| | | 56 | | } |
| | | 57 | | |
| | 0 | 58 | | return GetContext(reader, _baseAddress); |
| | 0 | 59 | | } |
| | | 60 | | |
| | | 61 | | private MSMQM.Message MessageQueueEndReceive(IAsyncResult result) |
| | | 62 | | { |
| | 0 | 63 | | MSMQM.Message message = null; |
| | | 64 | | try |
| | | 65 | | { |
| | 0 | 66 | | message = _messageQueue.EndReceive(result); |
| | 0 | 67 | | } |
| | | 68 | | catch (Exception e) |
| | | 69 | | { |
| | 0 | 70 | | Console.WriteLine(e); |
| | 0 | 71 | | } |
| | | 72 | | |
| | 0 | 73 | | return message; |
| | | 74 | | } |
| | | 75 | | |
| | | 76 | | private QueueMessageContext GetContext(PipeReader reader, Uri uri) |
| | | 77 | | { |
| | 0 | 78 | | var context = new QueueMessageContext |
| | 0 | 79 | | { |
| | 0 | 80 | | QueueMessageReader = reader, |
| | 0 | 81 | | LocalAddress = new EndpointAddress(uri) |
| | 0 | 82 | | }; |
| | 0 | 83 | | var receiveContext = new MsmqReceiveContext(context, _deadLetterQueueSender); |
| | 0 | 84 | | context.ReceiveContext = receiveContext; |
| | | 85 | | |
| | 0 | 86 | | return context; |
| | | 87 | | } |
| | | 88 | | |
| | | 89 | | private static IAsyncResult MessageQueueBeginReceive(MessageQueue messageQueue, TimeSpan timeout, |
| | | 90 | | AsyncCallback callback, object state) |
| | | 91 | | { |
| | 0 | 92 | | return messageQueue.BeginReceive(timeout, state, callback); |
| | | 93 | | } |
| | | 94 | | |
| | | 95 | | public void Dispose() |
| | | 96 | | { |
| | 0 | 97 | | _messageQueue.Close(); |
| | 0 | 98 | | } |
| | | 99 | | } |
| | | 100 | | } |