Module dk.cloudcreate.essentials.components.foundation

Package dk.cloudcreate.essentials.components.foundation.messaging.queue

Class DefaultDurableQueueConsumer<DURABLE_QUEUES extends DurableQueues,UOW extends UnitOfWork,UOW_FACTORY extends UnitOfWorkFactory<UOW>>

java.lang.Object

dk.cloudcreate.essentials.components.foundation.messaging.queue.DefaultDurableQueueConsumer<DURABLE_QUEUES,UOW,UOW_FACTORY>

Type Parameters:

DURABLE_QUEUES - the concrete type of DurableQueues implementation

UOW - the UnitOfWork type

UOW_FACTORY - the UnitOfWorkFactory type

All Implemented Interfaces:

Lifecycle, DurableQueueConsumer, DurableQueueConsumerNotifications, dk.cloudcreate.essentials.shared.Lifecycle

public abstract class DefaultDurableQueueConsumer<DURABLE_QUEUES extends DurableQueues,UOW extends UnitOfWork,UOW_FACTORY extends UnitOfWorkFactory<UOW>>
extends Object
implements DurableQueueConsumer, DurableQueueConsumerNotifications

The default DurableQueueConsumer which provides basic implementation (including retrying messages in case of failure, polling interval optimization, etc.)
Log levels of interest:

 dk.cloudcreate.essentials.components.foundation.messaging.queue.DurableQueueConsumer
 dk.cloudcreate.essentials.components.foundation.messaging.queue.DurableQueueConsumer.MessageHandlingFailures
 

Field Summary

Fields

Modifier and Type	Field	Description
static final org.slf4j.Logger	LOG
static final org.slf4j.Logger	MESSAGE_HANDLING_FAILURE_LOG
static final Runnable	NO_POSTPROCESSING_AFTER_PROCESS_NEXT_MESSAGE
final QueueName	queueName

Constructor Summary

Constructors

Constructor	Description
DefaultDurableQueueConsumer(ConsumeFromQueue consumeFromQueue, UOW_FACTORY unitOfWorkFactory, DURABLE_QUEUES durableQueues, Consumer<DurableQueueConsumer> removeDurableQueueConsumer, long pollingIntervalMs, QueuePollingOptimizer queuePollingOptimizer)

Method Summary

Modifier and Type	Method	Description
void	cancel()
String	consumerName()
protected boolean	isPermanentError(QueuedMessage queuedMessage, Throwable e)
boolean	isStarted()
void	messageAdded(QueuedMessage queuedMessage)	Notification from the DurableQueues implementation that a new message has been added to the Queue that the given DurableQueueConsumer is consuming messages from Note: A consumer still needs to use DurableQueues.getNextMessageReadyForDelivery(GetNextMessageReadyForDelivery) to ensure proper message locking of messages that they are processing
QueueName	queueName()
void	start()
void	stop()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

LOG

public static final org.slf4j.Logger LOG

MESSAGE_HANDLING_FAILURE_LOG

public static final org.slf4j.Logger MESSAGE_HANDLING_FAILURE_LOG

NO_POSTPROCESSING_AFTER_PROCESS_NEXT_MESSAGE

public static final Runnable NO_POSTPROCESSING_AFTER_PROCESS_NEXT_MESSAGE

queueName

public final QueueName queueName

Constructor Details

DefaultDurableQueueConsumer

public DefaultDurableQueueConsumer(ConsumeFromQueue consumeFromQueue,
 UOW_FACTORY unitOfWorkFactory,
 DURABLE_QUEUES durableQueues,
 Consumer<DurableQueueConsumer> removeDurableQueueConsumer,
 long pollingIntervalMs,
 QueuePollingOptimizer queuePollingOptimizer)

Method Details

start

public void start()

Specified by:

start in interface dk.cloudcreate.essentials.shared.Lifecycle

stop

public void stop()

Specified by:

stop in interface dk.cloudcreate.essentials.shared.Lifecycle

isStarted

public boolean isStarted()

Specified by:

isStarted in interface dk.cloudcreate.essentials.shared.Lifecycle

queueName

public QueueName queueName()

Specified by:

queueName in interface DurableQueueConsumer

consumerName

public String consumerName()

Specified by:

consumerName in interface DurableQueueConsumer

cancel

public void cancel()

Specified by:

cancel in interface DurableQueueConsumer

isPermanentError

protected boolean isPermanentError(QueuedMessage queuedMessage,
 Throwable e)

messageAdded

public void messageAdded(QueuedMessage queuedMessage)

Description copied from interface: DurableQueueConsumerNotifications

Notification from the DurableQueues implementation that a new message has been added to the Queue that the given DurableQueueConsumer is consuming messages from
Note: A consumer still needs to use DurableQueues.getNextMessageReadyForDelivery(GetNextMessageReadyForDelivery) to ensure proper message locking of messages that they are processing

Specified by:

messageAdded in interface DurableQueueConsumerNotifications

Parameters:

queuedMessage - the message added

toString

public String toString()

Overrides:

toString in class Object