/// <inheritdoc />
public override async Task HandleFailureAsync(MessageContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var deliveryCount = GetDeliveryCount(context.Message);
if (deliveryCount >= MaxDeliveryCount)
{
await context.MessageReceiver.AbandonAsync(context.Message.SystemProperties.LockToken).ConfigureAwait(false);
return;
}
var messageLocator = context.Message.CreateDeferredMessageLocator(BackOffDelayStrategy.Calculate(deliveryCount));
var sender = context.CreateMessageSender();
try
{
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
await sender.SendAsync(messageLocator).ConfigureAwait(false);
await context.MessageReceiver.DeferAsync(context.Message.SystemProperties.LockToken)
.ConfigureAwait(false);
scope.Complete();
}
}
finally
{
await sender.CloseAsync();
}
}
public override async Task HandleFailureAsync(MessageContext context, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var deliveryCount = GetDeliveryCount(context.Message);
if (deliveryCount >= MaxDeliveryCount)
{
await context.MessageReceiver.DeadLetterAsync(
context.Message.SystemProperties.LockToken,
$"Max delivery count of {MaxDeliveryCount} has been reached.")
.ConfigureAwait(false);
return;
}
var clone = context.Message.Clone();
clone.MessageId = Guid.NewGuid().ToString();
clone.ScheduledEnqueueTimeUtc = DateTime.UtcNow + BackOffDelayStrategy.Calculate(deliveryCount);
clone.UserProperties[Constants.RetryCountKey] = deliveryCount;
var sender = context.CreateMessageSender();
try
{
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
await sender.SendAsync(clone).ConfigureAwait(false);
await context.MessageReceiver.CompleteAsync(context.Message.SystemProperties.LockToken)
.ConfigureAwait(false);
scope.Complete();
}
}
finally
{
await sender.CloseAsync();
}
}
