Package org.autumnframework.service.rabbit.client.listener

Class CrudMessageListenerAndDelegationService

java.lang.Object

org.autumnframework.service.rabbit.client.listener.CrudMessageListenerAndDelegationService

public class CrudMessageListenerAndDelegationService
extends Object

Constructor Summary

Constructors

Constructor	Description
CrudMessageListenerAndDelegationService(com.fasterxml.jackson.databind.ObjectMapper objectMapper, List<CrudQueueListener<?,?>> crudQueueListeners, List<OnQueueCreateListener<?,?>> onCreateListeners, List<OnQueueUpdateListener<?,?>> onUpdateListeners, List<OnQueueDeleteListener<?,?>> onDeleteListeners)	This service is autowired with a list of all the CrudQueueListeners in the spring context.

Method Summary

Modifier and Type	Method	Description
void	delegateListToCrudQueueListeners(Class<? extends IdentifiableMessage<?>> aClass, List<IdentifiableMessage<?>> identifiableMessages, BiConsumer<CrudQueueBatchListener,List<IdentifiableMessage<?>>> crudQueueListenerConsumerMethod)
void	delegateListToOnCreateListeners(Class<? extends IdentifiableMessage<?>> aClass, List<IdentifiableMessage<?>> identifiableMessages)
void	delegateListToOnDeleteListeners(Class<? extends IdentifiableMessage<?>> aClass, List<IdentifiableMessage<?>> identifiableMessages)
void	delegateListToOnUpdateListeners(Class<? extends IdentifiableMessage<?>> aClass, List<IdentifiableMessage<?>> identifiableMessages)
void	delegateToCrudQueueListeners(Class<? extends IdentifiableMessage<?>> aClass, IdentifiableMessage<?> identifiableMessage, BiConsumer<CrudQueueListener,IdentifiableMessage> crudQueueListenerConsumerMethod)
void	delegateToOnCreateListeners(Class<? extends IdentifiableMessage<?>> aClass, IdentifiableMessage<?> identifiableMessage)
protected void	delegateToOnDeleteListeners(Class<? extends IdentifiableMessage<?>> aClass, IdentifiableMessage<?> identifiableMessage)
protected void	delegateToOnUpdateListeners(Class<? extends IdentifiableMessage<?>> aClass, IdentifiableMessage<?> identifiableMessage)
void	handleList(List<org.springframework.amqp.core.Message> messages, BiConsumer<Class<? extends IdentifiableMessage<?>>,List<IdentifiableMessage<?>>> msgClassAndMessage)

Methods inherited from class java.lang.Object

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

Constructor Details

CrudMessageListenerAndDelegationService

@Autowired
public CrudMessageListenerAndDelegationService(com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 List<CrudQueueListener<?,?>> crudQueueListeners,
 List<OnQueueCreateListener<?,?>> onCreateListeners,
 List<OnQueueUpdateListener<?,?>> onUpdateListeners,
 List<OnQueueDeleteListener<?,?>> onDeleteListeners)

This service is autowired with a list of all the CrudQueueListeners in the spring context. It listens to all the crud messages and receives the generic AMPQ Message. When a message is received, it uses the header to retrieve the class type of the message, then matches this against the CrudQueueListener class types. If a match is found, objectMapper is used to create the instance of this class and the matched CrudQueueListener is invoked with the specific message. If no match is found, we just trace log and ignore it. To receive messages, all you have to do is implement CrudQueueListener for your specific class type. No queue configuration or whatsoever required! You can register more than one CrudQueueListener You can now also register: - OnQueueCreateListener - OnQueueCreateListener - OnQueueCreateListener If a message is received, it will be sent to all of the above mentioned queue listeners

Parameters:

objectMapper -

crudQueueListeners -

Method Details

handleList

public void handleList(List<org.springframework.amqp.core.Message> messages,
 BiConsumer<Class<? extends IdentifiableMessage<?>>,List<IdentifiableMessage<?>>> msgClassAndMessage)

delegateToCrudQueueListeners

public void delegateToCrudQueueListeners(Class<? extends IdentifiableMessage<?>> aClass,
 IdentifiableMessage<?> identifiableMessage,
 BiConsumer<CrudQueueListener,IdentifiableMessage> crudQueueListenerConsumerMethod)

delegateListToCrudQueueListeners

public void delegateListToCrudQueueListeners(Class<? extends IdentifiableMessage<?>> aClass,
 List<IdentifiableMessage<?>> identifiableMessages,
 BiConsumer<CrudQueueBatchListener,List<IdentifiableMessage<?>>> crudQueueListenerConsumerMethod)

delegateToOnCreateListeners

public void delegateToOnCreateListeners(Class<? extends IdentifiableMessage<?>> aClass,
 IdentifiableMessage<?> identifiableMessage)

delegateListToOnCreateListeners

public void delegateListToOnCreateListeners(Class<? extends IdentifiableMessage<?>> aClass,
 List<IdentifiableMessage<?>> identifiableMessages)

delegateToOnUpdateListeners

protected void delegateToOnUpdateListeners(Class<? extends IdentifiableMessage<?>> aClass,
 IdentifiableMessage<?> identifiableMessage)

delegateListToOnUpdateListeners

public void delegateListToOnUpdateListeners(Class<? extends IdentifiableMessage<?>> aClass,
 List<IdentifiableMessage<?>> identifiableMessages)

delegateToOnDeleteListeners

protected void delegateToOnDeleteListeners(Class<? extends IdentifiableMessage<?>> aClass,
 IdentifiableMessage<?> identifiableMessage)

delegateListToOnDeleteListeners

public void delegateListToOnDeleteListeners(Class<? extends IdentifiableMessage<?>> aClass,
 List<IdentifiableMessage<?>> identifiableMessages)