/**
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual 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.
*/
package org.jboss.seam.cron.spi;
import org.jboss.seam.cron.impl.scheduling.exception.CronProviderInitialisationException;
import org.jboss.seam.cron.spi.scheduling.CronSchedulingInstaller;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.AfterDeploymentValidation;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.BeforeShutdown;
import javax.enterprise.inject.spi.Extension;
import javax.enterprise.inject.spi.ProcessObserverMethod;
import org.jboss.seam.cron.spi.asynchronous.CronAsynchronousProvider;
import org.jboss.seam.cron.spi.queue.CronQueueInstaller;
import org.jboss.seam.cron.spi.queue.CronQueueProvider;
import org.jboss.seam.cron.spi.scheduling.CronSchedulingProvider;
import org.jboss.seam.cron.util.CdiUtils;
import org.jboss.solder.logging.Logger;
/**
* The CDI Extention implementation which bootstraps Seam Cron. Not directly
* useful to service providers.
*
* @author Peter Royle
*/
public class SeamCronExtension implements Extension {
private final Set<ProcessObserverMethod> allObservers = new HashSet<ProcessObserverMethod>();
private CronQueueProvider queueProvider = null;
private CronAsynchronousProvider asynchronousProvider = null;
private CronSchedulingProvider schedulingProvider = null;
private final Set<CronProviderLifecycle> providersWithLifecycles = new HashSet<CronProviderLifecycle>();
private final Logger log = Logger.getLogger(SeamCronExtension.class);
/**
* Because "Extension classes should be public and have a public constructor
* for maximum portability"
*/
public SeamCronExtension() {
}
public void registerCronEventObserver(@Observes ProcessObserverMethod pom) {
allObservers.add(pom);
}
public void initProviders(@Observes AfterDeploymentValidation afterValid, final BeanManager manager,
final CronQueueInstaller cronQueueInstaller, final CronSchedulingInstaller cronSchedInstaller) {
// init all service providers
log.debug("Initializing service providers");
// process queue observers if queue provider exists
final CronQueueProvider queueProvider = CdiUtils.getInstanceByType(manager, CronQueueProvider.class);
if (queueProvider != null) {
this.queueProvider = queueProvider;
handleLifecycleInit(queueProvider);
cronQueueInstaller.initProviderQueue(manager, queueProvider, allObservers);
}
// process scheduling observers if scheduling provider exists
final CronSchedulingProvider schedProvider = CdiUtils.getInstanceByType(manager, CronSchedulingProvider.class);
if (schedProvider != null) {
this.schedulingProvider = schedProvider;
handleLifecycleInit(schedProvider);
cronSchedInstaller.initProviderScheduling(manager, schedProvider, allObservers);
}
// process aynchronous observers if aynchronous provider exists
final CronAsynchronousProvider asyncProvider = CdiUtils.getInstanceByType(manager, CronAsynchronousProvider.class);
if (asyncProvider != null) {
this.asynchronousProvider = asyncProvider;
handleLifecycleInit(asyncProvider);
}
// TODO: (PR): If there's an asynch provider present, check if the interceptor is enabled. See https://jira.jboss.org/jira/browse/WELDX-91
// final CronAsynchronousProvider asyncProvider = CdiUtils.getInstanceByType(manager, CronAsynchronousProvider.class);
// if (asyncProvider != null) {
// assert interceptors.isInterceptorEnabled(AsynchronousInterceptor.class);
// }
}
private void handleLifecycleInit(final Object asyncProvider) throws CronProviderInitialisationException {
if (asyncProvider instanceof CronProviderLifecycle) {
final CronProviderLifecycle cronProviderLifecycle = CronProviderLifecycle.class.cast(asyncProvider);
cronProviderLifecycle.initProvider();
providersWithLifecycles.add(cronProviderLifecycle);
}
}
public void stopProviders(@Observes BeforeShutdown event, final BeanManager manager,
final CronSchedulingInstaller cronSchedExt) {
for (CronProviderLifecycle providerLifecycle : providersWithLifecycles) {
providerLifecycle.destroyProvider();
}
}
public CronAsynchronousProvider getAsynchronousProvider() {
return asynchronousProvider;
}
public CronSchedulingProvider getSchedulingProvider() {
return schedulingProvider;
}
public CronQueueProvider getQueueProvider() {
return queueProvider;
}
}