/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.bus.osgi;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import org.apache.cxf.bus.extension.Extension;
import org.apache.cxf.bus.extension.ExtensionRegistry;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.osgi.service.cm.ManagedService;
import org.osgi.service.cm.ManagedServiceFactory;
import org.osgi.util.tracker.ServiceTracker;
/**
* Is called in OSGi on start and stop of the cxf bundle.
* Manages
* - CXFBundleListener
* - Attaching ManagedWorkqueues tio config admin service
* - OsgiBusListener
*/
public class CXFActivator implements BundleActivator {
private List<Extension> extensions;
private ManagedWorkQueueList workQueues = new ManagedWorkQueueList();
private ServiceTracker configAdminTracker;
private CXFExtensionBundleListener cxfBundleListener;
private ServiceRegistration workQueueServiceRegistration;
private ServiceRegistration wqSingleConfigRegistratin;
/** {@inheritDoc}*/
@SuppressWarnings("deprecation")
public void start(BundleContext context) throws Exception {
cxfBundleListener = new CXFExtensionBundleListener(context.getBundle().getBundleId());
context.addBundleListener(cxfBundleListener);
cxfBundleListener.registerExistingBundles(context);
configAdminTracker = new ServiceTracker(context, ConfigurationAdmin.class.getName(), null);
configAdminTracker.open();
workQueues.setConfigAdminTracker(configAdminTracker);
workQueueServiceRegistration = registerManagedServiceFactory(context, ManagedServiceFactory.class,
workQueues,
ManagedWorkQueueList.FACTORY_PID);
WorkQueueSingleConfig wqSingleConfig = new WorkQueueSingleConfig(workQueues);
wqSingleConfigRegistratin = registerManagedServiceFactory(context, ManagedService.class,
wqSingleConfig,
WorkQueueSingleConfig.SERVICE_PID);
extensions = new ArrayList<Extension>();
extensions.add(createOsgiBusListenerExtension(context));
extensions.add(createManagedWorkQueueListExtension(workQueues));
ExtensionRegistry.addExtensions(extensions);
}
private ServiceRegistration registerManagedServiceFactory(BundleContext context,
Class<?> serviceClass,
Object service,
String servicePid) {
Properties props = new Properties();
props.put(Constants.SERVICE_PID, servicePid);
return context.registerService(serviceClass.getName(), service, props);
}
private Extension createOsgiBusListenerExtension(BundleContext context) {
Extension busListener = new Extension(OSGIBusListener.class);
busListener.setArgs(new Object[] {context});
return busListener;
}
private static Extension createManagedWorkQueueListExtension(final ManagedWorkQueueList workQueues) {
return new Extension(ManagedWorkQueueList.class) {
public Object getLoadedObject() {
return workQueues;
}
public Extension cloneNoObject() {
return this;
}
};
}
/** {@inheritDoc}*/
public void stop(BundleContext context) throws Exception {
context.removeBundleListener(cxfBundleListener);
cxfBundleListener.shutdown();
workQueues.shutDown();
workQueueServiceRegistration.unregister();
wqSingleConfigRegistratin.unregister();
configAdminTracker.close();
ExtensionRegistry.removeExtensions(extensions);
}
}