/// <summary>
/// Implements persistent message delivery handler
/// </summary>
/// <param name="builder">Horse MQ Builder</param>
/// <param name="deleteWhen">Decision when messages are deleted from disk</param>
/// <param name="producerAckDecision">Decision when producer receives acknowledge</param>
/// <param name="useRedelivery">True if want to keep redelivery data and send to consumers with message headers</param>
/// <param name="ackTimeoutPutback">Putback decision when ack message isn't received</param>
/// <param name="nackPutback">Putback decision when negative ack is received</param>
/// <returns></returns>
public static HorseMqBuilder UsePersistentDeliveryHandler(this HorseMqBuilder builder,
DeleteWhen deleteWhen,
ProducerAckDecision producerAckDecision,
bool useRedelivery = false,
PutBackDecision ackTimeoutPutback = PutBackDecision.End,
PutBackDecision nackPutback = PutBackDecision.End)
{
builder.Server.DeliveryHandlerFactory = async(dh) =>
{
DatabaseOptions databaseOptions = ConfigurationFactory.Builder.CreateOptions(dh.Queue);
PersistentDeliveryHandler handler = new PersistentDeliveryHandler(dh.Queue, databaseOptions,
deleteWhen,
producerAckDecision,
useRedelivery,
dh.DeliveryHandlerHeader);
handler.AckTimeoutPutBack = ackTimeoutPutback;
handler.NegativeAckPutBack = nackPutback;
await handler.Initialize();
dh.OnAfterCompleted(AfterDeliveryHandlerCreated);
return(handler);
};
return(builder);
}
/// <summary>
/// Creates and returns persistent queue
/// </summary>
internal static async Task <HorseQueue> CreateQueue(HorseMq mq,
string queueName,
DeleteWhen deleteWhen,
ProducerAckDecision producerAckDecision,
QueueOptions options)
{
return(await mq.CreateQueue(queueName, options, async builder =>
{
DatabaseOptions databaseOptions = ConfigurationFactory.Builder.CreateOptions(builder.Queue);
PersistentDeliveryHandler handler = new PersistentDeliveryHandler(builder.Queue, databaseOptions, deleteWhen, producerAckDecision);
await handler.Initialize();
return handler;
}));
}
/// <summary>
/// Creates and initializes new persistent delivery handler for the queue
/// </summary>
/// <param name="builder">Delivery handler builder</param>
/// <param name="deleteWhen">Decision when messages are deleted from disk</param>
/// <param name="producerAckDecision">Decision when producer receives acknowledge</param>
/// <param name="useRedelivery">True if want to keep redelivery data and send to consumers with message headers</param>
/// <param name="key">Definition key for delivery handler. You can manage with that key, how the queue will be reloaded.</param>
/// <param name="ackTimeoutPutback">Putback decision when ack message isn't received</param>
/// <param name="nackPutback">Putback decision when negative ack is received</param>
/// <returns></returns>
public static async Task <IMessageDeliveryHandler> CreatePersistentDeliveryHandler(this DeliveryHandlerBuilder builder,
DeleteWhen deleteWhen,
ProducerAckDecision producerAckDecision,
bool useRedelivery = false,
PutBackDecision ackTimeoutPutback = PutBackDecision.End,
PutBackDecision nackPutback = PutBackDecision.End,
string key = "default")
{
DatabaseOptions databaseOptions = ConfigurationFactory.Builder.CreateOptions(builder.Queue);
PersistentDeliveryHandler handler = new PersistentDeliveryHandler(builder.Queue, databaseOptions, deleteWhen, producerAckDecision, useRedelivery, key);
handler.AckTimeoutPutBack = ackTimeoutPutback;
handler.NegativeAckPutBack = nackPutback;
await handler.Initialize();
builder.OnAfterCompleted(AfterDeliveryHandlerCreated);
return(handler);
}
