async Task InitAsync(ReceiverOptions options, CancellationToken receiverTerminationToken)
{
_logger.LogInformation($"Initializing '{nameof(BrokeredMessageReceiver<TMessage>)}' of type '{typeof(TMessage).Name}'.");
options.Description ??= options.MessageReceiverPath;
_infrastructureReceiver = _infrastructureProvider.GetReceiver(options.InfrastructureType);
options.MessageReceiverPath = _infrastructureProvider.GetInfrastructure(options.InfrastructureType).PathBuilder.GetMessageReceivingPath(options.SendingPath, options.MessageReceiverPath);
this.SendingPath = options.SendingPath;
this.MessageReceiverPath = options.MessageReceiverPath;
this.ErrorQueueName = options.ErrorQueuePath;
this.DeadLetterQueueName = options.DeadLetterQueuePath;
options.TransactionMode ??= _messageBrokerOptions.TransactionMode;
_options = options;
_logger.LogTrace("Initializing messaging infrastructure");
await _infrastructureReceiver.InitializeAsync(_options, receiverTerminationToken);
_logger.LogTrace("Successfully initialized messaging infrastructure");
_logger.LogDebug($"Receiver options: Infrastructure type: '{_options.InfrastructureType}', Transaction Mode: '{options.TransactionMode}', Message receiver: '{options.MessageReceiverPath}', Deadletter queue: '{options.DeadLetterQueuePath}', Error queue: '{options.ErrorQueuePath}', Max receive attempts: '{options.MaxReceiveAttempts}', Message sent from: '{options.SendingPath}', Max Concurrent Receives: '{_maxConcurrentCalls}'");
_semaphore = new SemaphoreSlim(_maxConcurrentCalls, _maxConcurrentCalls);
_messageReceiverLoopTokenSource = CancellationTokenSource.CreateLinkedTokenSource(receiverTerminationToken);
_messageReceiverLoop = MessageReceiverLoopAsync();
this.IsReceiving = true;
_logger.LogInformation($"'{nameof(BrokeredMessageReceiver<TMessage>)}' has started receiving messages of type '{typeof(TMessage).Name}'.");
await _messageReceiverLoop;
_logger.LogInformation($"'{nameof(BrokeredMessageReceiver<TMessage>)}' for messages of type '{typeof(TMessage).Name}' is shutting down.");
}
/// <summary>
/// Creates a brokered message receiver that receives messages of <typeparamref name="TMessage"/>
/// </summary>
/// <param name="infrastructureReceiver">The message broker infrastructure</param>
/// <param name="brokeredMessageDetailProvider">Provides routing details to the brokered message receiver</param>
/// <param name="messageDispatcher">Dispatches messages of <typeparamref name="TMessage"/> to the appropriate <see cref="IMessageHandler{TMessage}"/></param>
/// <param name="logger">Provides logging capability</param>
public BrokeredMessageReceiver(IMessagingInfrastructureReceiver <TMessage> infrastructureReceiver,
IBrokeredMessageDetailProvider brokeredMessageDetailProvider,
IBrokeredMessageDispatcher brokeredMessageDispatcher,
ILogger <BrokeredMessageReceiver <TMessage> > logger,
IServiceScopeFactory serviceFactory)
{
_syncLock = new object();
_infrastructureReceiver = infrastructureReceiver ?? throw new ArgumentNullException(nameof(infrastructureReceiver));
_brokeredMessageDetailProvider = brokeredMessageDetailProvider ?? throw new ArgumentNullException(nameof(brokeredMessageDetailProvider));
_brokeredMessageDispatcher = brokeredMessageDispatcher ?? throw new ArgumentNullException(nameof(brokeredMessageDispatcher));
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
_serviceFactory = serviceFactory ?? throw new ArgumentNullException(nameof(serviceFactory));
}
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
_messageReceiverLoopTokenSource?.Cancel();
_infrastructureReceiver?.Dispose();
_semaphore?.Dispose();
_messageReceiverLoopTokenSource?.Dispose();
}
_infrastructureReceiver = null;
_disposedValue = true;
}
}
