static RecoverabilityAction OrderPlacedPolicy(RecoverabilityConfig config, ErrorContext context)
{
var errorCategory = ErrorCategory.Unknown;
if (context.Message.Headers.ContainsKey("NServiceBus.EnclosedMessageTypes"))
{
if (context.Message.Headers["NServiceBus.EnclosedMessageTypes"].StartsWith("Messages.Commands.PlaceOrder"))
{
errorCategory = FailPolicy.GetPolicy("Messages.Commands.PlaceOrder").GetCategory(context.Exception);
}
else if (context.Message.Headers["NServiceBus.EnclosedMessageTypes"].StartsWith("Messages.Commands.CancelOrder"))
{
errorCategory = FailPolicy.GetPolicy("Messages.Commands.CancelOrder").GetCategory(context.Exception);
}
}
if (errorCategory == ErrorCategory.Persistent)
{
return(RecoverabilityAction.MoveToError(config.Failed.ErrorQueue));
}
else if (errorCategory == ErrorCategory.SemiTransient)
{
return(RecoverabilityAction.DelayedRetry(TimeSpan.FromSeconds(60)));
}
// invocation of default recoverability policy
return(DefaultRecoverabilityPolicy.Invoke(config, context));
}
static void SetUpPolicies()
{
FailPolicy.CreatePolicyWithName("Messages.Commands.PlaceOrder")
.PersistentByDefault()
.ClassifyAsSemiTransient <FraudDetectionUnavailableException>()
.AddTransientClassifier(new SqlErrorClassifier());
FailPolicy.CreatePolicyWithName("Messages.Commands.CancelOrder")
.TransientByDefault()
.ClassifyAsPersistent <OrderNotFoundException>();
}
protected override void OnStart(string[] args)
{
try
{
FailPolicy.CreateFor(typeof(CrmNotifierRequest))
.ClassifyAsTransient(new SqlTransientErrorDetector())
.OnTransientError(retryLimit: 3,
retryPeriod: TimeSpan.FromMinutes(1),
periodType: PeriodType.ExponentialBackoff,
exponent: 2,
retryLimitAction: FailAction.SendToFailExchange)
.OnPersistentError(FailAction.SendToFailExchange);
Endpoint.InitializeAsConsumer(_endpointManager)
.HandleEvent <CrmNotifierRequest>()
.WithSingleConsumer(perConsumerConcurrency: 1)
.Start();
}
catch (Exception ex)
{
Trace.TraceError("Could not start windows service: " + ex);
}
}
