private async Task Process(IncomingMessage message, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested ||
message.HasLockExpired)
{
await messageSource
.Abandon(message)
.ConfigureAwait(false);
return;
}
using var serviceScope = serviceScopeFactory.CreateScope();
var context = new Context(
serviceScope,
cancellationToken);
try
{
await pipelineStartingAction(message, context)
.ConfigureAwait(false);
await messageSource
.Complete(message)
.ConfigureAwait(false);
}
catch (Exception exception)
{
// Behaviours should have logged/recorded/responded to this exception.
if (message.DequeuedCount < retryOptions.MaximumImmediateAttempts)
{
await messageSource
.Abandon(message)
.ConfigureAwait(false);
return;
}
if (message.DequeuedCount - retryOptions.MaximumImmediateAttempts < retryOptions.MaximumDeferredAttempts)
{
await messageSource
.DeferUntil(message, DateTime.UtcNow + retryOptions.EffectiveDeferredRetryInterval, "Exception handling message", exception.ToString())
.ConfigureAwait(false);
return;
}
await messageSource
.DeadLetter(message, "Exception handling message", exception.ToString())
.ConfigureAwait(false);
}
}