//private string BuildInvocationFailureMessage(string methodName, object[] arguments)
//{
// return string.Concat(new string[]
// {
// "Failed to invoke target method '",
// methodName,
// "' with argument types = [",
// StringUtils.CollectionToCommaDelimitedString<string>(this.GetArgumentTypes(arguments)),
// "], values = [",
// StringUtils.CollectionToCommaDelimitedString<object>(arguments),
// "]"
// });
//}
//private System.Collections.Generic.List<string> GetArgumentTypes(object[] arguments)
//{
// System.Collections.Generic.List<string> list = new System.Collections.Generic.List<string>();
// if (arguments != null)
// {
// for (int i = 0; i < arguments.Length; i++)
// {
// list.Add(arguments[i].GetType().ToString());
// }
// }
// return list;
//}
protected virtual void HandleResult(AmqpBasedRoute replyRoute, List <object> responses)
{
if (replyRoute != null)
{
this._queueClient.BatchPublish(exchangeName: replyRoute.ExchangeName, routingKey: replyRoute.RoutingKey, contentList: responses);
}
}
public QueuedWorkflowMessageProcessingWorker(IQueueClient queueClient, object listenerObject, MethodInfo listenerMethod, QueuedTransition queuedTransition, QueuedTransition nextQueuedTransition, bool createZombieQueues)
{
Contract.Requires(queueClient.IsNotNull(), "No queueClient specified: Either specify a non-null value for the 'queueClient' constructor argument.");
Contract.Requires(listenerObject.IsNotNull(), "No listenerObject specified: Either specify a non-null value for the 'listenerObject' constructor argument.");
Contract.Requires(listenerMethod.IsNotNull(), "No listenerMethod specified: Either specify a non-null value for the 'listenerMethod' constructor argument.");
this._queueClient = queueClient;
this._listenerObject = listenerObject;
this._listenerMethod = listenerMethod;
Type inType = this._listenerMethod.GetUniqueAndExpectedInputParameterType();
Type outType = this._listenerMethod.GetReturnValueType();
if (outType == typeof(void) || outType == typeof(Task))
{
this._canUseRequestAsResponse = true;
}
else
{
this._canUseRequestAsResponse = outType.IsAssignableFrom(inType);
}
//Receive Route é usada para garantir a criação da rota no RabbitMQ
this.ReceiveRoute = new AmqpBasedRoute()
{
ExchangeName = queuedTransition.ExchangeName, //Criando ExchangeName Default
QueueName = queuedTransition.LogicalQueueName + ".Process", //Queue de recebimento (Fila Principal)
RoutingKey = queuedTransition.BuildRoutingKey() //Binding Entre a ExchangeName e a Fila
};
this.ReceiveRoute.EnsureAll(this._queueClient);
if (createZombieQueues)
{
//Filas Zombie não precisam ser armazenadas em variáveis, só precisam ser configuradas
//corretamente no RabbitMQ
AmqpBasedRoute zombieConfiguration = new AmqpBasedRoute()
{
ExchangeName = this.ReceiveRoute.ExchangeName,
QueueName = queuedTransition.LogicalQueueName + ".Zombie",
RoutingKey = this.ReceiveRoute.RoutingKey
};
zombieConfiguration.EnsureAll(this._queueClient);
}
//Caso não seja um passo final, é necessário armazenar e tratar as respostas para o próximo step
if (nextQueuedTransition != null)
{
this._successResponseRoute = new AmqpBasedRoute()
{
QueueName = nextQueuedTransition.LogicalQueueName + ".Process",
ExchangeName = nextQueuedTransition.ExchangeName,
RoutingKey = nextQueuedTransition.BuildRoutingKey(),
};
this._successResponseRoute.EnsureAll(this._queueClient);
}
this._errorFlowStrategy = queuedTransition.ErrorFlowStrategy;
//Nesse passo as estratégias são usadas para configurar o comportamento adequado para falhas
if (this._errorFlowStrategy == ExceptionStrategy.SendToErrorQueue)
{
//Se ao encontrar um erro, é necessário enviar para a fila de erro, todo o pipe de erro é criado
//isso conta com a criação da fila, e dos bindings no RabbitMQ
this._failureResponseRoute = new AmqpBasedRoute()
{
QueueName = queuedTransition.LogicalQueueName + ".Failure",
ExchangeName = this.ReceiveRoute.ExchangeName,
RoutingKey = queuedTransition.BuildFailureRoutingKey()
};
this._failureResponseRoute.EnsureAll(this._queueClient);
}
else if (this._errorFlowStrategy == ExceptionStrategy.Requeue)
{
//Nesse caso, ao gerar um erro na fila a mensagem volta para a fila, portanto
//a rota usada é escolhida como a mesma rota de recebimento, forçando um requeue
this._failureResponseRoute = this.ReceiveRoute;
}
else if (this._errorFlowStrategy == ExceptionStrategy.SendToNextStepQueue)
{
//Nesse caso temos a possibilidade de continuar o fluxo, mesmo que uma
//exceção seja lançada.
if (this._successResponseRoute == null)
{
throw new InvalidOperationException("The ErrorFlowStrategy property cannot be setted with SendToNextStepQueue value when current step is a final step.");
}
this._failureResponseRoute = this._successResponseRoute;
}
}
