/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.ejb3.deployment.processors.dd;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.jboss.as.ee.component.Attachments;
import org.jboss.as.ee.component.ComponentDescription;
import org.jboss.as.ee.component.EEModuleDescription;
import org.jboss.as.ee.component.InterceptorDescription;
import org.jboss.as.ejb3.deployment.EjbDeploymentAttachmentKeys;
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.reflect.ClassReflectionIndex;
import org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex;
import org.jboss.invocation.proxy.MethodIdentifier;
import org.jboss.metadata.ejb.spec.EjbJarMetaData;
import org.jboss.metadata.ejb.spec.InterceptorBindingMetaData;
import org.jboss.metadata.ejb.spec.InterceptorMetaData;
import org.jboss.metadata.ejb.spec.NamedMethodMetaData;
import org.jboss.modules.Module;
import static org.jboss.as.ejb3.EjbMessages.MESSAGES;
import static org.jboss.as.ejb3.EjbLogger.ROOT_LOGGER;
/**
* Processor that handles interceptor bindings that are defined in the deployment descriptor.
*
* @author Stuart Douglas
*/
public class DeploymentDescriptorInterceptorBindingsProcessor implements DeploymentUnitProcessor {
@Override
public void deploy(final DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
final EjbJarMetaData metaData = deploymentUnit.getAttachment(EjbDeploymentAttachmentKeys.EJB_JAR_METADATA);
final EEModuleDescription eeModuleDescription = deploymentUnit.getAttachment(Attachments.EE_MODULE_DESCRIPTION);
final Module module = deploymentUnit.getAttachment(org.jboss.as.server.deployment.Attachments.MODULE);
final DeploymentReflectionIndex index = deploymentUnit.getAttachment(org.jboss.as.server.deployment.Attachments.REFLECTION_INDEX);
if (metaData == null) {
return;
}
if (metaData.getAssemblyDescriptor() == null) {
return;
}
if (metaData.getAssemblyDescriptor().getInterceptorBindings() == null) {
return;
}
//default interceptors must be mentioned in the interceptors section
final Set<String> interceptorClasses = new HashSet<String>();
if (metaData.getInterceptors() != null) {
for (final InterceptorMetaData interceptor : metaData.getInterceptors()) {
interceptorClasses.add(interceptor.getInterceptorClass());
}
}
final Map<String, List<InterceptorBindingMetaData>> bindingsPerComponent = new HashMap<String, List<InterceptorBindingMetaData>>();
final List<InterceptorBindingMetaData> defaultInterceptorBindings = new ArrayList<InterceptorBindingMetaData>();
for (final InterceptorBindingMetaData binding : metaData.getAssemblyDescriptor().getInterceptorBindings()) {
if (binding.getEjbName().equals("*")) {
if (binding.getMethod() != null) {
throw MESSAGES.defaultInterceptorsNotBindToMethod();
}
if(binding.getInterceptorOrder() != null) {
throw MESSAGES.defaultInterceptorsNotSpecifyOrder();
}
defaultInterceptorBindings.add(binding);
} else {
List<InterceptorBindingMetaData> bindings = bindingsPerComponent.get(binding.getEjbName());
if (bindings == null) {
bindingsPerComponent.put(binding.getEjbName(), bindings = new ArrayList<InterceptorBindingMetaData>());
}
bindings.add(binding);
}
}
final List<InterceptorDescription> defaultInterceptors = new ArrayList<InterceptorDescription>();
for (InterceptorBindingMetaData binding : defaultInterceptorBindings) {
if (binding.getInterceptorClasses() != null) {
for (final String clazz : binding.getInterceptorClasses()) {
//we only want default interceptors referenced in the interceptors section
if (interceptorClasses.contains(clazz)) {
defaultInterceptors.add(new InterceptorDescription(clazz));
} else {
ROOT_LOGGER.defaultInterceptorClassNotListed(clazz);
}
}
}
}
//now we need to process the components, and add interceptor information
//we iterate over all components, as we need to process default interceptors
for (final ComponentDescription componentDescription : eeModuleDescription.getComponentDescriptions()) {
final Class<?> componentClass;
try {
componentClass = module.getClassLoader().loadClass(componentDescription.getComponentClassName());
} catch (ClassNotFoundException e) {
throw MESSAGES.failToLoadComponentClass(componentDescription.getComponentClassName());
}
final List<InterceptorBindingMetaData> bindings = bindingsPerComponent.get(componentDescription.getComponentName());
final Map<Method, List<InterceptorBindingMetaData>> methodInterceptors = new HashMap<Method, List<InterceptorBindingMetaData>>();
final List<InterceptorBindingMetaData> classLevelBindings = new ArrayList<InterceptorBindingMetaData>();
//we only want to exclude default and class level interceptors if every binding
//has the exclude element.
boolean classLevelExcludeDefaultInterceptors = false;
Map<Method, Boolean> methodLevelExcludeDefaultInterceptors = new HashMap<Method, Boolean>();
Map<Method, Boolean> methodLevelExcludeClassInterceptors = new HashMap<Method, Boolean>();
//if an absolute order has been defined at any level
//absolute ordering takes precedence
boolean classLevelAbsoluteOrder = false;
final Map<Method, Boolean> methodLevelAbsoluteOrder = new HashMap<Method, Boolean>();
if (bindings != null) {
for (final InterceptorBindingMetaData binding : bindings) {
if (binding.getMethod() == null) {
classLevelBindings.add(binding);
//if even one binding does not say exclude default then we do not exclude
if (binding.isExcludeDefaultInterceptors()) {
classLevelExcludeDefaultInterceptors = true;
}
if (binding.isTotalOrdering()) {
if (classLevelAbsoluteOrder) {
throw MESSAGES.twoEjbBindingsSpecifyAbsoluteOrder(componentClass.toString());
} else {
classLevelAbsoluteOrder = true;
}
}
} else {
//method level bindings
//first find the right method
final NamedMethodMetaData methodData = binding.getMethod();
final ClassReflectionIndex<?> classIndex = index.getClassIndex(componentClass);
Method resolvedMethod = null;
if (methodData.getMethodParams() == null) {
final Collection<Method> methods = classIndex.getAllMethods(methodData.getMethodName());
if (methods.isEmpty()) {
throw MESSAGES.failToFindMethodInEjbJarXml(componentClass.getName(),methodData.getMethodName());
} else if (methods.size() > 1) {
throw MESSAGES.multipleMethodReferencedInEjbJarXml(methodData.getMethodName(),componentClass.getName());
}
resolvedMethod = methods.iterator().next();
} else {
final Collection<Method> methods = classIndex.getAllMethods(methodData.getMethodName(), methodData.getMethodParams().size());
for (final Method method : methods) {
boolean match = true;
for (int i = 0; i < method.getParameterTypes().length; ++i) {
if (!method.getParameterTypes()[i].getName().equals(methodData.getMethodParams().get(i))) {
match = false;
break;
}
}
if (match) {
resolvedMethod = method;
break;
}
}
if (resolvedMethod == null) {
throw MESSAGES.failToFindMethodWithParameterTypes(componentClass.getName(), methodData.getMethodName(), methodData.getMethodParams());
}
}
List<InterceptorBindingMetaData> list = methodInterceptors.get(resolvedMethod);
if (list == null) {
methodInterceptors.put(resolvedMethod, list = new ArrayList<InterceptorBindingMetaData>());
}
list.add(binding);
if (binding.isExcludeDefaultInterceptors()) {
methodLevelExcludeDefaultInterceptors.put(resolvedMethod, true);
}
if (binding.isExcludeClassInterceptors()) {
methodLevelExcludeClassInterceptors.put(resolvedMethod, true);
}
if (binding.isTotalOrdering()) {
if (methodLevelAbsoluteOrder.containsKey(resolvedMethod)) {
throw MESSAGES.twoEjbBindingsSpecifyAbsoluteOrder(resolvedMethod.toString());
} else {
methodLevelAbsoluteOrder.put(resolvedMethod, true);
}
}
}
}
}
//now we have all the bindings in a format we can use
//build the list of default interceptors
componentDescription.setDefaultInterceptors(defaultInterceptors);
if(classLevelExcludeDefaultInterceptors) {
componentDescription.setExcludeDefaultInterceptors(true);
}
final List<InterceptorDescription> classLevelInterceptors = new ArrayList<InterceptorDescription>();
if (classLevelAbsoluteOrder) {
//we have an absolute ordering for the class level interceptors
for (final InterceptorBindingMetaData binding : classLevelBindings) {
if (binding.isTotalOrdering()) {
for (final String interceptor : binding.getInterceptorOrder()) {
classLevelInterceptors.add(new InterceptorDescription(interceptor));
}
}
}
//we have merged the default interceptors into the class interceptors
componentDescription.setExcludeDefaultInterceptors(true);
} else {
//the order we want is default interceptors (this will be empty if they are excluded)
//the annotation interceptors
//then dd interceptors
classLevelInterceptors.addAll(componentDescription.getClassInterceptors());
for (InterceptorBindingMetaData binding : classLevelBindings) {
if (binding.getInterceptorClasses() != null) {
for (final String interceptor : binding.getInterceptorClasses()) {
classLevelInterceptors.add(new InterceptorDescription(interceptor));
}
}
}
}
componentDescription.setClassInterceptors(classLevelInterceptors);
for (Map.Entry<Method, List<InterceptorBindingMetaData>> entry : methodInterceptors.entrySet()) {
final Method method = entry.getKey();
final List<InterceptorBindingMetaData> methodBindings = entry.getValue();
boolean totalOrder = methodLevelAbsoluteOrder.containsKey(method);
final MethodIdentifier methodIdentifier = MethodIdentifier.getIdentifierForMethod(method);
Boolean excludeDefaultInterceptors = methodLevelExcludeDefaultInterceptors.get(method);
excludeDefaultInterceptors = excludeDefaultInterceptors == null ? false : excludeDefaultInterceptors;
if (!excludeDefaultInterceptors) {
excludeDefaultInterceptors = componentDescription.isExcludeDefaultInterceptors() || componentDescription.isExcludeDefaultInterceptors(methodIdentifier);
}
Boolean excludeClassInterceptors = methodLevelExcludeClassInterceptors.get(method);
excludeClassInterceptors = excludeClassInterceptors == null ? false : excludeClassInterceptors;
if (!excludeClassInterceptors) {
excludeClassInterceptors = componentDescription.isExcludeClassInterceptors(methodIdentifier);
}
final List<InterceptorDescription> methodLevelInterceptors = new ArrayList<InterceptorDescription>();
if (totalOrder) {
//if there is a total order we just use it
for (final InterceptorBindingMetaData binding : methodBindings) {
if (binding.isTotalOrdering()) {
for (final String interceptor : binding.getInterceptorOrder()) {
methodLevelInterceptors.add(new InterceptorDescription(interceptor));
}
}
}
} else {
//add class level and default interceptors, if not excluded
//class level interceptors also includes default interceptors
if (!excludeDefaultInterceptors) {
methodLevelInterceptors.addAll(defaultInterceptors);
}
if (!excludeClassInterceptors) {
for (InterceptorDescription interceptor : classLevelInterceptors) {
methodLevelInterceptors.add(interceptor);
}
}
List<InterceptorDescription> annotationMethodLevel = componentDescription.getMethodInterceptors().get(methodIdentifier);
if (annotationMethodLevel != null) {
methodLevelInterceptors.addAll(annotationMethodLevel);
}
//now add all the interceptors from the bindings
for (InterceptorBindingMetaData binding : methodBindings) {
if (binding.getInterceptorClasses() != null) {
for (final String interceptor : binding.getInterceptorClasses()) {
methodLevelInterceptors.add(new InterceptorDescription(interceptor));
}
}
}
}
//we have already taken component and default interceptors into account
componentDescription.excludeClassInterceptors(methodIdentifier);
componentDescription.excludeDefaultInterceptors(methodIdentifier);
componentDescription.setMethodInterceptors(methodIdentifier, methodLevelInterceptors);
}
}
}
@Override
public void undeploy(final DeploymentUnit context) {
}
}