/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.ee.component.deployers;
import org.jboss.as.ee.component.Attachments;
import org.jboss.as.ee.component.EEApplicationClasses;
import org.jboss.as.ee.component.EEModuleClassDescription;
import org.jboss.as.ee.component.EEModuleDescription;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.as.server.deployment.annotation.CompositeIndex;
import org.jboss.invocation.proxy.MethodIdentifier;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.jandex.MethodInfo;
import org.jboss.jandex.Type;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;
import java.util.List;
/**
* Deployment processor responsible for finding @AroundInvoke annotated methods in classes within a deployment.
*
* @author John Bailey
* @author Stuart Douglas
*/
public class AroundInvokeAnnotationParsingProcessor implements DeploymentUnitProcessor {
private static final DotName AROUND_INVOKE_ANNOTATION_NAME = DotName.createSimple(AroundInvoke.class.getName());
public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
final EEModuleDescription eeModuleDescription = deploymentUnit.getAttachment(Attachments.EE_MODULE_DESCRIPTION);
final EEApplicationClasses applicationClasses = deploymentUnit.getAttachment(Attachments.EE_APPLICATION_CLASSES_DESCRIPTION);
final CompositeIndex index = deploymentUnit.getAttachment(org.jboss.as.server.deployment.Attachments.COMPOSITE_ANNOTATION_INDEX);
final List<AnnotationInstance> aroundInvokes = index.getAnnotations(AROUND_INVOKE_ANNOTATION_NAME);
for (AnnotationInstance annotation : aroundInvokes) {
processAroundInvoke(eeModuleDescription, annotation.target(), applicationClasses);
}
}
public void undeploy(final DeploymentUnit context) {
}
private void processAroundInvoke(final EEModuleDescription eeModuleDescription, final AnnotationTarget target, final EEApplicationClasses applicationClasses) {
if (!(target instanceof MethodInfo)) {
throw new IllegalArgumentException("@AroundInvoke is only valid on method targets.");
}
final MethodInfo methodInfo = MethodInfo.class.cast(target);
final ClassInfo classInfo = methodInfo.declaringClass();
final EEModuleClassDescription classDescription = applicationClasses.getOrAddClassByName(classInfo.name().toString());
validateArgumentType(classInfo, methodInfo);
classDescription.setAroundInvokeMethod(MethodIdentifier.getIdentifier(Object.class, methodInfo.name(), InvocationContext.class));
}
private void validateArgumentType(final ClassInfo classInfo, final MethodInfo methodInfo) {
final Type[] args = methodInfo.args();
switch (args.length) {
case 0:
throw new IllegalArgumentException("Invalid argument signature. Methods annotated with " + AROUND_INVOKE_ANNOTATION_NAME + " must have a single InvocationContext argument.");
case 1:
if (!InvocationContext.class.getName().equals(args[0].name().toString())) {
throw new IllegalArgumentException("Invalid argument type. Methods annotated with " + AROUND_INVOKE_ANNOTATION_NAME + " must have a single InvocationContext argument.");
}
break;
default:
throw new IllegalArgumentException("Invalid number of arguments for method " + methodInfo.name() + " annotated with " + AROUND_INVOKE_ANNOTATION_NAME + " on class " + classInfo.name());
}
if (!methodInfo.returnType().name().toString().equals(Object.class.getName())) {
throw new IllegalArgumentException("@AroundInvoke methods must have an Object return type for " + methodInfo.name() + " annotated with " + AROUND_INVOKE_ANNOTATION_NAME + " on class " + classInfo.name());
}
}
}