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TransactedJMSContext.java
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TransactedJMSContext.java
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/*
* Copyright The WildFly Authors
* SPDX-License-Identifier: Apache-2.0
*/
package org.wildfly.extension.messaging.activemq.deployment.injection;
import jakarta.jms.JMSContext;
import jakarta.transaction.Synchronization;
import jakarta.transaction.TransactionScoped;
import jakarta.transaction.TransactionSynchronizationRegistry;
import static org.wildfly.extension.messaging.activemq._private.MessagingLogger.ROOT_LOGGER;
/**
* Injection of JMSContext in the @TransactionScoped scope.
*
* @author <a href="http://jmesnil.net/">Jeff Mesnil</a> (c) 2016 Red Hat inc.
*/
@TransactionScoped
class TransactedJMSContext extends AbstractJMSContext {
/**
* Closing of transaction scoped JMSContext is executed through Synchronization listener.
* This method registers listener, which takes care of closing JMSContext.
*
* @param transactionSynchronizationRegistry
* @param contextInstance
*/
void registerCleanUpListener(TransactionSynchronizationRegistry transactionSynchronizationRegistry, JMSContext contextInstance) {
//to avoid registration of more listeners for one context, flag in transaction is used.
Object alreadyRegistered = transactionSynchronizationRegistry.getResource(contextInstance);
if (alreadyRegistered == null) {
transactionSynchronizationRegistry.registerInterposedSynchronization(new AfterCompletionSynchronization(contextInstance));
transactionSynchronizationRegistry.putResource(contextInstance, AfterCompletionSynchronization.class.getName());
}
}
/**
* Synchronization task, which executes "cleanup" on JMSContext in AfterCompletion phase. BeforeCompletion does nothing.
*/
private class AfterCompletionSynchronization implements Synchronization {
final JMSContext context;
public AfterCompletionSynchronization(JMSContext context) {
this.context = context;
}
@Override
public void beforeCompletion() {
//intentionally blank
}
@Override
public void afterCompletion(int status) {
ROOT_LOGGER.debugf("Clean up JMSContext created from %s", TransactedJMSContext.this);
context.close();
}
}
}