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KrazoCdiExtension.java
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KrazoCdiExtension.java
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/*
* Copyright (c) 2014-2015 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2018, 2019 Eclipse Krazo committers and contributors
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
*/
package org.eclipse.krazo.cdi;
import org.eclipse.krazo.KrazoConfig;
import org.eclipse.krazo.MvcContextImpl;
import org.eclipse.krazo.binding.BeanValidationProducer;
import org.eclipse.krazo.binding.BindingResultManager;
import org.eclipse.krazo.binding.ConstraintViolationTranslator;
import org.eclipse.krazo.binding.convert.ConverterRegistry;
import org.eclipse.krazo.binding.convert.MvcConverterProvider;
import org.eclipse.krazo.cdi.types.AnnotatedTypeProcessor;
import org.eclipse.krazo.core.*;
import org.eclipse.krazo.engine.JspViewEngine;
import org.eclipse.krazo.engine.ViewEngineFinder;
import org.eclipse.krazo.event.*;
import org.eclipse.krazo.forms.FormMethodOverwriteFilter;
import org.eclipse.krazo.jaxrs.JaxRsContextProducer;
import org.eclipse.krazo.lifecycle.EventDispatcher;
import org.eclipse.krazo.lifecycle.RequestLifecycle;
import org.eclipse.krazo.locale.DefaultLocaleResolver;
import org.eclipse.krazo.locale.LocaleResolverChain;
import org.eclipse.krazo.security.*;
import org.eclipse.krazo.uri.ApplicationUris;
import org.eclipse.krazo.uri.UriTemplateParser;
import org.eclipse.krazo.util.CdiUtils;
import org.eclipse.krazo.binding.validate.ValidationInterceptor;
import jakarta.annotation.Priority;
import jakarta.enterprise.event.Observes;
import jakarta.enterprise.inject.spi.*;
import jakarta.interceptor.Interceptor;
import jakarta.mvc.Controller;
import jakarta.mvc.RedirectScoped;
import jakarta.mvc.event.MvcEvent;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Class KrazoCdiExtension. Initialize redirect scope as CDI scope. Collect information
* about all MVC events being observed by the application to optimize event creation
* and firing.
*
* @author Santiago Pericas-Geertsen
* @author Manfred Riem
* @author Christian Kaltepoth
*/
@SuppressWarnings("unchecked")
public class KrazoCdiExtension implements Extension {
private static final Logger log = Logger.getLogger(KrazoCdiExtension.class.getName());
private static Set<Class<? extends MvcEvent>> observedEvents;
private final AnnotatedTypeProcessor annotatedTypeProcessor = new AnnotatedTypeProcessor();
/**
* Before bean discovery.
*
* @param event the event.
* @param beanManager the bean manager.
*/
public void beforeBeanDiscovery(@Observes final BeforeBeanDiscovery event, BeanManager beanManager) {
log.fine("Observed BeforeBeanDiscovery event, registering scopes and beans...");
event.addScope(RedirectScoped.class, true, true);
CdiUtils.addAnnotatedTypes(event, beanManager,
// .
MvcContextImpl.class,
KrazoConfig.class,
// binding
BeanValidationProducer.class,
BindingResultManager.class,
ConstraintViolationTranslator.class,
ConverterRegistry.class,
MvcConverterProvider.class,
// core
Messages.class,
ModelsImpl.class,
ViewableWriter.class,
ViewResponseFilter.class,
// lifecycle
EventDispatcher.class,
RequestLifecycle.class,
// engine
JspViewEngine.class,
ViewEngineFinder.class,
// security
CsrfImpl.class,
CsrfProtectFilter.class,
CsrfValidateFilter.class,
CsrfTokenManager.class,
EncodersImpl.class,
// util
CdiUtils.class,
// cdi
RedirectScopeManager.class,
ValidationInterceptor.class,
AroundControllerInterceptor.class,
//event
AfterControllerEventImpl.class,
AfterProcessViewEventImpl.class,
BeforeControllerEventImpl.class,
BeforeProcessViewEventImpl.class,
ControllerRedirectEventImpl.class,
//locale
LocaleResolverChain.class,
DefaultLocaleResolver.class,
// jaxrs
JaxRsContextProducer.class,
// uri
ApplicationUris.class,
UriTemplateParser.class,
// forms
FormMethodOverwriteFilter.class
);
}
/**
* After bean discovery.
*
* @param event the event.
* @param beanManager the bean manager.
*/
public void afterBeanDiscovery(@Observes final AfterBeanDiscovery event, BeanManager beanManager) {
event.addContext(new RedirectScopeContext());
}
/**
* Search for {@link Controller} annotation and patch AnnotatedType.
* Note: PLATFORM_AFTER is required so we execute AFTER the Hibernate Validator Extension
*/
public <T> void processAnnotatedType(
@Observes @Priority(Interceptor.Priority.PLATFORM_AFTER) @WithAnnotations({Controller.class})
ProcessAnnotatedType<T> pat) {
AnnotatedType<T> replacement = annotatedTypeProcessor.getReplacement(pat.getAnnotatedType());
if (replacement != null) {
log.log(Level.FINE, "Replacing AnnotatedType of class: {0}", replacement.getJavaClass().getName());
pat.setAnnotatedType(replacement);
}
}
/**
* Gather set of event types that are observed by MVC application. This info is later
* used to optimize event creation and firing.
*
* @param pom process observer method object.
* @param beanManager the bean manager.
* @param <T> the type of the event being observed.
* @param <X> the bean type containing the observer method.
*/
public <T, X> void processObserverMethod(@Observes ProcessObserverMethod<T, X> pom, BeanManager beanManager) {
final Type type = pom.getObserverMethod().getObservedType();
if (type instanceof Class<?>) {
final Class<?> clazz = (Class<?>) type;
if (MvcEvent.class.isAssignableFrom(clazz)) {
addObservedEvent((Class<? extends MvcEvent>) type);
}
}
}
/**
* Add MVC event type to set of observed events.
*
* @param eventType event type.
*/
public static synchronized void addObservedEvent(Class<? extends MvcEvent> eventType) {
if (observedEvents == null) {
observedEvents = new HashSet<>();
}
observedEvents.add(eventType);
}
/**
* Determine if an event type is being observed.
*
* @param eventType event type.
* @return outcome of test.
*/
public static synchronized boolean isEventObserved(Class<? extends MvcEvent> eventType) {
return observedEvents != null && observedEvents.contains(eventType);
}
}