/// <summary>
/// Configures the simple retry strategy, using the specified error queue address and number of delivery attempts
/// </summary>
/// <param name="optionsConfigurer">(extension method target)</param>
/// <param name="errorQueueAddress">Specifies the name of the error queue</param>
/// <param name="maxDeliveryAttempts">Specifies how many delivery attempts should be made before forwarding a failed message to the error queue</param>
/// <param name="secondLevelRetriesEnabled">Specifies whether second level retries should be enabled - when enabled, the message will be dispatched wrapped in an <see cref="IFailed{TMessage}"/> after the first <paramref name="maxDeliveryAttempts"/> delivery attempts, allowing a different handler to handle the message. Dispatch of the <see cref="IFailed{TMessage}"/> is subject to the same <paramref name="maxDeliveryAttempts"/> delivery attempts</param>
/// <param name="errorDetailsHeaderMaxLength">Specifies a MAX length of the error details to be enclosed as the <see cref="Headers.ErrorDetails"/> header. As the enclosed error details can sometimes become very long (especially when using many delivery attempts), depending on the transport's capabilities it might sometimes be necessary to truncate the error details</param>
public static void SimpleRetryStrategy(this OptionsConfigurer optionsConfigurer,
string errorQueueAddress = SimpleRetryStrategySettings.DefaultErrorQueueName,
int maxDeliveryAttempts = SimpleRetryStrategySettings.DefaultNumberOfDeliveryAttempts,
bool secondLevelRetriesEnabled = false,
int errorDetailsHeaderMaxLength = int.MaxValue)
{
if (optionsConfigurer == null)
{
throw new ArgumentNullException(nameof(optionsConfigurer));
}
optionsConfigurer.Register(c => new SimpleRetryStrategySettings(errorQueueAddress, maxDeliveryAttempts, secondLevelRetriesEnabled, errorDetailsHeaderMaxLength));
if (secondLevelRetriesEnabled)
{
optionsConfigurer.Decorate <IPipeline>(c =>
{
var pipeline = c.Get <IPipeline>();
var errorTracker = c.Get <IErrorTracker>();
var incomingStep = new FailedMessageWrapperStep(errorTracker);
var outgoingStep = new VerifyCannotSendFailedMessageWrapperStep();
return(new PipelineStepInjector(pipeline)
.OnReceive(incomingStep, PipelineRelativePosition.After, typeof(DeserializeIncomingMessageStep))
.OnSend(outgoingStep, PipelineRelativePosition.Before, typeof(SerializeOutgoingMessageStep)));
});
}
}
/// <summary>
/// Configures the simple retry strategy, using the specified error queue address and number of delivery attempts
/// </summary>
public static void SimpleRetryStrategy(this OptionsConfigurer optionsConfigurer,
string errorQueueAddress = SimpleRetryStrategySettings.DefaultErrorQueueName,
int maxDeliveryAttempts = SimpleRetryStrategySettings.DefaultNumberOfDeliveryAttempts,
bool secondLevelRetriesEnabled = false)
{
optionsConfigurer.Register(c => new SimpleRetryStrategySettings(errorQueueAddress, maxDeliveryAttempts, secondLevelRetriesEnabled));
if (secondLevelRetriesEnabled)
{
optionsConfigurer.Decorate<IPipeline>(c =>
{
var pipeline = c.Get<IPipeline>();
var errorTracker = c.Get<IErrorTracker>();
var incomingStep = new FailedMessageWrapperStep(errorTracker);
var outgoingStep = new VerifyCannotSendFailedMessageWrapperStep();
return new PipelineStepInjector(pipeline)
.OnReceive(incomingStep, PipelineRelativePosition.After, typeof(DeserializeIncomingMessageStep))
.OnSend(outgoingStep, PipelineRelativePosition.Before, typeof(SerializeOutgoingMessageStep));
});
}
}