org.jboss.ejb.client.TransactionPostDiscoveryInterceptor Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.ejb.client;
import static org.jboss.ejb.client.TransactionInterceptor.APPLICATIONS;
import static org.jboss.ejb.client.TransactionInterceptor.Application;
import static org.jboss.ejb.client.TransactionInterceptor.PREFERRED_DESTINATIONS;
import static org.jboss.ejb.client.TransactionInterceptor.toApplication;
import java.net.URI;
import java.util.concurrent.ConcurrentMap;
import jakarta.ejb.NoSuchEJBException;
import org.jboss.ejb._private.Logs;
import org.jboss.ejb.client.annotation.ClientInterceptorPriority;
import org.wildfly.transaction.client.ContextTransactionManager;
/**
* The client interceptor which associates discovery output with the current
* transaction of the invocation.
*
* @author David M. Lloyd
* @author Jason T. Greene
*/
@ClientInterceptorPriority(TransactionPostDiscoveryInterceptor.PRIORITY)
public final class TransactionPostDiscoveryInterceptor implements EJBClientInterceptor {
private static final ContextTransactionManager transactionManager = ContextTransactionManager.getInstance();
static final AttachmentKey APPLICATION = new AttachmentKey<>();
/**
* This interceptor's priority.
*/
public static final int PRIORITY = ClientInterceptorPriority.JBOSS_AFTER + 150;
/**
* Construct a new instance.
*/
public TransactionPostDiscoveryInterceptor() {
}
public void handleInvocation(final EJBClientInvocationContext context) throws Exception {
ConcurrentMap applications = context.getAttachment(APPLICATIONS);
if (applications != null) {
URI destination = context.getDestination();
Application registered = updateOrFollowApplication(context, applications, true);
if (Logs.INVOCATION.isDebugEnabled()) {
Logs.INVOCATION.debugf("TransactionPostDiscoveryInterceptor: calling handleInvocation, destination = %s, application = %s", destination, registered);
}
try {
context.sendRequest();
} catch (NoSuchEJBException | RequestSendFailedException e) {
if (registered != null) {
// Clear sticky association only if this path registered it
applications.remove(registered, destination);
}
context.removeAttachment(APPLICATIONS);
context.removeAttachment(PREFERRED_DESTINATIONS);
context.removeAttachment(APPLICATION);
throw e;
}
} else {
context.sendRequest();
}
}
public SessionID handleSessionCreation(final EJBSessionCreationInvocationContext context) throws Exception {
ConcurrentMap applications = context.getAttachment(APPLICATIONS);
if (applications != null) {
URI destination = context.getDestination();
Application registered = updateOrFollowApplication(context, applications, false);
if (Logs.INVOCATION.isDebugEnabled()) {
Logs.INVOCATION.debugf("TransactionPostDiscoveryInterceptor: calling handleSessionCreation, destination = %s, application = %s", destination, registered);
}
try {
return context.proceed();
} catch (NoSuchEJBException | RequestSendFailedException e) {
if (registered != null) {
// Clear sticky association only if this path registered it
applications.remove(registered, destination);
}
throw e;
} finally {
context.removeAttachment(APPLICATIONS);
context.removeAttachment(PREFERRED_DESTINATIONS);
}
}
return context.proceed();
}
private Application updateOrFollowApplication(AbstractInvocationContext context, ConcurrentMap applications, boolean register) {
URI destination = context.getDestination();
if (destination != null) {
EJBIdentifier identifier = context.getLocator().getIdentifier();
Application application = toApplication(identifier);
if (Logs.INVOCATION.isDebugEnabled()) {
Logs.INVOCATION.debugf("TransactionPostDiscoveryInterceptor: calling updateOrFollowApplication, destination = %s, application = %s", destination, application);
}
URI existing = applications.putIfAbsent(application, destination);
if (existing != null) {
if (Logs.INVOCATION.isDebugEnabled()) {
Logs.INVOCATION.debugf("TransactionPostDiscoveryInterceptor: calling updateOrFollowApplication, updating from map, destination = %s", existing);
}
// Someone else set a mapping, use it instead
context.setDestination(existing);
} else {
if (register) {
if (Logs.INVOCATION.isDebugEnabled()) {
Logs.INVOCATION.debugf("TransactionPostDiscoveryInterceptor: calling updateOrFollowApplication, added destination for application, application = %s", application);
}
context.putAttachment(APPLICATION, application);
}
return application;
}
} else {
Logs.TXN.trace("Failed assertion: a destination was supposed ot be present but wasn't");
}
return null;
}
public Object handleInvocationResult(final EJBClientInvocationContext context) throws Exception {
ConcurrentMap applications = context.getAttachment(APPLICATIONS);
Application application = context.getAttachment(APPLICATION);
URI destination = context.getDestination();
try {
return context.getResult();
} catch (RequestSendFailedException | NoSuchEJBException e) {
if (application != null) {
applications.remove(application, destination);
}
throw e;
} finally {
context.removeAttachment(APPLICATIONS);
context.removeAttachment(PREFERRED_DESTINATIONS);
context.removeAttachment(APPLICATION);
}
}
}