private async Task OnMessageReceivedAsync(
Func <IQueueMessage, CancellationToken, Task> messageHandler,
MessageHandlerOptions messageHandlerOptions,
BasicDeliverEventArgs eventArgs)
{
var cancellationToken = CancellationToken.None;
var message = new RabbitMQQueueMessage(
eventArgs.Body,
eventArgs.DeliveryTag,
eventArgs.BasicProperties);
try
{
await messageHandler(message, cancellationToken);
if (messageHandlerOptions.AutoComplete)
{
await CompleteAsync(message, cancellationToken);
}
}
catch (Exception ex)
{
try
{
var exceptionHandler = messageHandlerOptions?.ExceptionReceivedHandler;
if (exceptionHandler != null)
{
var context = new MessageHandlerExceptionContext(ex);
await exceptionHandler(context);
}
}
catch
{
}
await AbandonAsync(message, cancellationToken);
}
}
public override Task <IQueueMessage> DequeueAsync(
CancellationToken cancellationToken = default(CancellationToken))
{
BasicGetResult result;
lock (_channel)
{
result = _channel.BasicGet(_queueName, autoAck: false);
}
if (result == null)
{
return(Task.FromResult <IQueueMessage>(null));
}
var message = new RabbitMQQueueMessage(
result.Body,
result.DeliveryTag,
result.BasicProperties);
return(Task.FromResult <IQueueMessage>(message));
}