public override Task OnMessageAsync(T message, RabbitMQConsumerContext consumerContext, IFeedbackSender feedbackSender,
CancellationToken cancellationToken)
{
try
{
_callbackAction(message, consumerContext);
feedbackSender.Ack();
}
catch (Exception e)
{
feedbackSender.Nack(true);
}
return(Task.FromResult(0));
}
protected override Task <bool> TryInvokeAsync(T message, RabbitMQConsumerContext consumerContext, List <Exception> exceptions,
CancellationToken cancellationToken)
{
try
{
_callbackAction(message, consumerContext);
return(Task.FromResult(true));
}
catch (Exception exception)
{
exceptions.Add(exception);
return(Task.FromResult(false));
}
}
public override async Task OnMessageAsync(T message, RabbitMQConsumerContext consumerContext, IFeedbackSender feedbackSender, CancellationToken cancellationToken)
{
try
{
using (var tokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
tokenSource.CancelAfter(_processingTimeout);
await _callbackFunc(message, consumerContext, tokenSource.Token).ConfigureAwait(false);
}
feedbackSender.Ack();
}
catch (Exception e)
{
feedbackSender.Nack(true);
}
}
protected override async Task <bool> TryInvokeAsync(T message, RabbitMQConsumerContext consumerContext, List <Exception> exceptions,
CancellationToken cancellationToken)
{
try
{
using (var tokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
tokenSource.CancelAfter(_processingTimeout);
await _callbackFunc(message, consumerContext, tokenSource.Token).ConfigureAwait(false);
}
return(true);
}
catch (Exception exception)
{
exceptions.Add(exception);
return(false);
}
}
public override async Task OnMessageAsync(T message, RabbitMQConsumerContext consumerContext, IFeedbackSender feedbackSender,
CancellationToken cancellationToken)
{
var invocationSuccess = false;
var exceptions = new List <Exception>();
var tryCount = 0;
while (tryCount == 0 || (!invocationSuccess && ShouldRetry(tryCount, exceptions)))
{
if (tryCount > 0 && InvokeRetryWaitMilliseconds > 0)
{
await Task.Delay(InvokeRetryWaitMilliseconds, cancellationToken).ConfigureAwait(false);
}
tryCount++;
invocationSuccess = await TryInvokeAsync(message, consumerContext, exceptions, cancellationToken).ConfigureAwait(false);
}
if (invocationSuccess)
{
feedbackSender.Ack();
}
else if (ShouldRequeue(exceptions))
{
feedbackSender.Nack(true);
Logger.LogWarning(new AggregateException(exceptions), $"Message successfully processed, but exceptions were thrown after {tryCount} tries");
}
else
{
feedbackSender.Nack(false);
Logger.LogError(new AggregateException(exceptions), $"Unable to successfully process message after {tryCount} tries");
}
}
public abstract Task OnMessageAsync(T message, RabbitMQConsumerContext consumerContext, IFeedbackSender feedbackSender, CancellationToken cancellationToken);
protected abstract Task <bool> TryInvokeAsync(T message, RabbitMQConsumerContext consumerContext, List <Exception> exceptions,
CancellationToken cancellationToken);
