package org.jboss.as.undertow.deployment;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.servlet.AsyncListener;
import org.jboss.as.ee.component.Attachments;
import org.jboss.as.ee.component.ComponentDescription;
import org.jboss.as.ee.component.EEApplicationClasses;
import org.jboss.as.ee.component.EEModuleDescription;
import org.jboss.as.ee.structure.DeploymentType;
import org.jboss.as.ee.structure.DeploymentTypeMarker;
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.as.undertow.UndertowMessages;
import org.jboss.as.web.common.WarMetaData;
import org.jboss.as.web.common.WebComponentDescription;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.metadata.web.jboss.JBossWebMetaData;
import org.jboss.metadata.web.spec.FilterMetaData;
import org.jboss.metadata.web.spec.ListenerMetaData;
import org.jboss.metadata.web.spec.ServletMetaData;
import org.jboss.metadata.web.spec.TagMetaData;
import org.jboss.metadata.web.spec.TldMetaData;
/**
* Processor that figures out what type of component a servlet/listener is, and registers the appropriate metadata.
* The different types are:
* <ul>
* <li>Managed Bean - If the servlet is annotated with the <code>ManagedBean</code> annotation</li>
* <li>CDI Bean - If the servlet is deployed in a bean archive</li>
* <li>EE Component - If this is an EE deployment and the servlet is not one of the above</li>
* <li>Normal Servlet - If the EE subsystem is disabled</li>
* </ul>
* <p/>
* For ManagedBean Servlets no action is necessary at this stage, as the servlet is already registered as a component.
* For CDI and EE components a component definition is added to the deployment.
* <p/>
* For now we are just using managed bean components as servlets. We may need a custom component type in future.
*/
public class WebComponentProcessor implements DeploymentUnitProcessor {
/**
* Tags in these packages do not need to be computerized
*/
private static final String[] BUILTIN_TAGLIBS = {"org.apache.taglibs.standard", "com.sun.faces.taglib.jsf_core", "com.sun.faces.ext.taglib", "com.sun.faces.taglib.html_basic",};
/**
* Dotname for AsyncListener, which can be injected dynamically.
*/
private static final DotName ASYNC_LISTENER_INTERFACE = DotName.createSimple(AsyncListener.class.getName());
@Override
public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
if (!DeploymentTypeMarker.isType(DeploymentType.WAR, deploymentUnit)) {
return;
}
final Map<String, ComponentDescription> componentByClass = new HashMap<String, ComponentDescription>();
final EEModuleDescription moduleDescription = deploymentUnit.getAttachment(Attachments.EE_MODULE_DESCRIPTION);
final EEApplicationClasses applicationClassesDescription = deploymentUnit.getAttachment(Attachments.EE_APPLICATION_CLASSES_DESCRIPTION);
final CompositeIndex compositeIndex = deploymentUnit.getAttachment(org.jboss.as.server.deployment.Attachments.COMPOSITE_ANNOTATION_INDEX);
if (moduleDescription == null) {
return; //not an ee deployment
}
for (ComponentDescription component : moduleDescription.getComponentDescriptions()) {
componentByClass.put(component.getComponentClassName(), component);
}
final WarMetaData warMetaData = deploymentUnit.getAttachment(WarMetaData.ATTACHMENT_KEY);
final TldsMetaData tldsMetaData = deploymentUnit.getAttachment(TldsMetaData.ATTACHMENT_KEY);
final Set<String> classes = getAllComponentClasses(deploymentUnit, compositeIndex, warMetaData, tldsMetaData);
for (String clazz : classes) {
if (clazz == null || clazz.trim().isEmpty()) {
continue;
}
ComponentDescription description = componentByClass.get(clazz);
if (description != null) {
//for now just make sure it has a single view
//this will generally be a managed bean, but it could also be an EJB
//TODO: make sure the component is a managed bean
if (!(description.getViews().size() == 1)) {
throw UndertowMessages.MESSAGES.wrongComponentType(clazz);
}
} else {
//we do not make the standard tags into components, as there is no need
if (compositeIndex.getClassByName(DotName.createSimple(clazz)) == null) {
boolean found = false;
for (String pack : BUILTIN_TAGLIBS) {
if (clazz.startsWith(pack)) {
found = true;
break;
}
}
if(found) {
continue;
}
}
description = new WebComponentDescription(clazz, clazz, moduleDescription, deploymentUnit.getServiceName(), applicationClassesDescription);
moduleDescription.addComponent(description);
deploymentUnit.addToAttachmentList(WebComponentDescription.WEB_COMPONENTS, description.getStartServiceName());
}
}
}
@Override
public void undeploy(DeploymentUnit context) {
}
/**
* Gets all classes that are eligible for injection etc
*
* @param metaData
* @return
*/
private Set<String> getAllComponentClasses(DeploymentUnit deploymentUnit, CompositeIndex index, WarMetaData metaData, TldsMetaData tldsMetaData) {
final Set<String> classes = new HashSet<String>();
getAllComponentClasses(metaData.getMergedJBossWebMetaData(), classes);
if (tldsMetaData == null)
return classes;
if (tldsMetaData.getSharedTlds(deploymentUnit) != null)
for (TldMetaData tldMetaData : tldsMetaData.getSharedTlds(deploymentUnit)) {
getAllComponentClasses(tldMetaData, classes);
}
if (tldsMetaData.getTlds() != null)
for (Map.Entry<String, TldMetaData> tldMetaData : tldsMetaData.getTlds().entrySet()) {
getAllComponentClasses(tldMetaData.getValue(), classes);
}
getAllAsyncListenerClasses(index, classes);
return classes;
}
private void getAllComponentClasses(JBossWebMetaData metaData, Set<String> classes) {
if (metaData.getServlets() != null)
for (ServletMetaData servlet : metaData.getServlets()) {
if (servlet.getServletClass() != null) {
classes.add(servlet.getServletClass());
}
}
if (metaData.getFilters() != null)
for (FilterMetaData filter : metaData.getFilters()) {
classes.add(filter.getFilterClass());
}
if (metaData.getListeners() != null)
for (ListenerMetaData listener : metaData.getListeners()) {
classes.add(listener.getListenerClass());
}
}
private void getAllComponentClasses(TldMetaData metaData, Set<String> classes) {
if (metaData.getValidator() != null) {
classes.add(metaData.getValidator().getValidatorClass());
}
if (metaData.getListeners() != null)
for (ListenerMetaData listener : metaData.getListeners()) {
classes.add(listener.getListenerClass());
}
if (metaData.getTags() != null)
for (TagMetaData tag : metaData.getTags()) {
classes.add(tag.getTagClass());
}
}
private void getAllAsyncListenerClasses(CompositeIndex index, Set<String> classes) {
if (index != null) {
Set<ClassInfo> classInfos = index.getAllKnownImplementors(ASYNC_LISTENER_INTERFACE);
for (ClassInfo classInfo : classInfos) {
classes.add(classInfo.name().toString());
}
}
}
}