| /* |
| * 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.karaf.shell.osgi; |
| |
| import java.util.Map; |
| import java.util.Hashtable; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.springframework.osgi.context.event.OsgiBundleApplicationContextListener; |
| import org.springframework.osgi.context.event.OsgiBundleApplicationContextEvent; |
| import org.springframework.osgi.context.event.OsgiBundleContextFailedEvent; |
| import org.springframework.osgi.context.event.OsgiBundleContextRefreshedEvent; |
| import org.springframework.osgi.extender.event.BootstrappingDependencyEvent; |
| import org.springframework.osgi.service.importer.event.OsgiServiceDependencyEvent; |
| import org.springframework.osgi.service.importer.event.OsgiServiceDependencyWaitStartingEvent; |
| import org.osgi.framework.BundleListener; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.ServiceRegistration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| public class SpringStateListenerFactory implements BundleStateListener.Factory { |
| |
| private BundleContext bundleContext; |
| private BundleStateListener listener; |
| |
| public void setBundleContext(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| |
| public void init() { |
| getListener(); |
| } |
| |
| public void destroy() throws Exception { |
| if (listener instanceof Destroyable) { |
| ((Destroyable) listener).destroy(); |
| } |
| } |
| |
| public synchronized BundleStateListener getListener() { |
| if (listener == null) { |
| listener = createListener(); |
| } |
| return listener; |
| } |
| |
| private BundleStateListener createListener() { |
| try { |
| // Use dynamic class loading to make sure we actually try to reload the class for |
| // dynamic imports to kick in if possible |
| Class cl = getClass().getClassLoader().loadClass("org.apache.karaf.shell.osgi.SpringStateListenerFactory$SpringApplicationListener"); |
| return (BundleStateListener) cl.getConstructor(BundleContext.class).newInstance(bundleContext); |
| // return new SpringApplicationListener(bundleContext); |
| } catch (Throwable t) { |
| return null; |
| } |
| } |
| |
| public static interface Destroyable { |
| |
| public void destroy() throws Exception; |
| |
| } |
| |
| public static class SpringApplicationListener implements OsgiBundleApplicationContextListener, |
| BundleListener, Destroyable, BundleStateListener { |
| |
| public static enum SpringState { |
| Unknown, |
| Waiting, |
| Started, |
| Failed, |
| } |
| |
| private static final Logger LOG = LoggerFactory.getLogger(BlueprintListener.class); |
| |
| private final Map<Long, SpringState> states; |
| private BundleContext bundleContext; |
| private ServiceRegistration registration; |
| |
| public SpringApplicationListener(BundleContext bundleContext) { |
| this.states = new ConcurrentHashMap<Long, SpringState>(); |
| this.bundleContext = bundleContext; |
| this.bundleContext.addBundleListener(this); |
| this.registration = this.bundleContext.registerService(OsgiBundleApplicationContextListener.class.getName(), this, new Hashtable()); |
| } |
| |
| public void destroy() throws Exception { |
| bundleContext.removeBundleListener(this); |
| registration.unregister(); |
| } |
| |
| public String getName() { |
| return "Spring "; |
| } |
| |
| public String getState(Bundle bundle) { |
| SpringState state = states.get(bundle.getBundleId()); |
| if (state == null || bundle.getState() != Bundle.ACTIVE || state == SpringState.Unknown) { |
| return null; |
| } |
| return state.toString(); |
| } |
| |
| public SpringState getSpringState(Bundle bundle) { |
| SpringState state = states.get(bundle.getBundleId()); |
| if (state == null || bundle.getState() != Bundle.ACTIVE) { |
| state = SpringState.Unknown; |
| } |
| return state; |
| } |
| |
| public void onOsgiApplicationEvent(OsgiBundleApplicationContextEvent event) { |
| SpringState state = null; |
| if (event instanceof BootstrappingDependencyEvent) { |
| OsgiServiceDependencyEvent de = ((BootstrappingDependencyEvent) event).getDependencyEvent(); |
| if (de instanceof OsgiServiceDependencyWaitStartingEvent) { |
| state = SpringState.Waiting; |
| } |
| } else if (event instanceof OsgiBundleContextFailedEvent) { |
| state = SpringState.Failed; |
| } else if (event instanceof OsgiBundleContextRefreshedEvent) { |
| state = SpringState.Started; |
| } |
| if (state != null) { |
| LOG.debug("Spring app state changed to " + state + " for bundle " + event.getBundle().getBundleId()); |
| states.put(event.getBundle().getBundleId(), state); |
| } |
| } |
| |
| public void bundleChanged(BundleEvent event) { |
| if (event.getType() == BundleEvent.UNINSTALLED) { |
| states.remove(event.getBundle().getBundleId()); |
| } |
| } |
| |
| } |
| |
| } |