| /* |
| * 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.bundle.state.spring.internal; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.karaf.bundle.core.BundleState; |
| import org.apache.karaf.bundle.core.BundleStateService; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.BundleListener; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.osgi.context.event.OsgiBundleApplicationContextEvent; |
| import org.springframework.osgi.context.event.OsgiBundleApplicationContextListener; |
| import org.springframework.osgi.context.event.OsgiBundleContextFailedEvent; |
| import org.springframework.osgi.context.event.OsgiBundleContextRefreshedEvent; |
| import org.springframework.osgi.extender.event.BootstrappingDependencyEvent; |
| |
| public class SpringStateService implements OsgiBundleApplicationContextListener, |
| BundleListener, BundleStateService { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(SpringStateService.class); |
| |
| private final Map<Long, OsgiBundleApplicationContextEvent> states; |
| |
| public SpringStateService(BundleContext bundleContext) { |
| this.states = new ConcurrentHashMap<Long, OsgiBundleApplicationContextEvent>(); |
| } |
| |
| public String getName() { |
| return BundleStateService.NAME_SPRING_DM; |
| } |
| |
| public BundleState getState(Bundle bundle) { |
| OsgiBundleApplicationContextEvent event = states.get(bundle.getBundleId()); |
| BundleState state = mapEventToState(event); |
| return (bundle.getState() != Bundle.ACTIVE) ? BundleState.Unknown : state; |
| } |
| |
| public String getDiag(Bundle bundle) { |
| OsgiBundleApplicationContextEvent event = states.get(bundle.getBundleId()); |
| if (event == null) { |
| return null; |
| } |
| |
| StringBuilder message = new StringBuilder(); |
| Date date = new Date(event.getTimestamp()); |
| SimpleDateFormat df = new SimpleDateFormat(); |
| message.append(df.format(date) + "\n"); |
| Throwable ex = getException(event); |
| if (ex != null) { |
| message.append("Exception: \n"); |
| addMessages(message, ex); |
| } |
| return message.toString(); |
| } |
| |
| private void addMessages(StringBuilder message, Throwable ex) { |
| if (ex != null) { |
| message.append(ex.getMessage()); |
| message.append("\n"); |
| StringWriter errorWriter = new StringWriter(); |
| ex.printStackTrace(new PrintWriter(errorWriter)); |
| message.append(errorWriter.toString()); |
| message.append("\n"); |
| } |
| } |
| |
| private Throwable getException(OsgiBundleApplicationContextEvent event) { |
| if (!(event instanceof OsgiBundleContextFailedEvent)) { |
| return null; |
| } |
| OsgiBundleContextFailedEvent failureEvent = (OsgiBundleContextFailedEvent) event; |
| return failureEvent.getFailureCause(); |
| } |
| |
| public void onOsgiApplicationEvent(OsgiBundleApplicationContextEvent event) { |
| if (LOG.isDebugEnabled()) { |
| BundleState state = mapEventToState(event); |
| LOG.debug("Spring app state changed to " + state + " for bundle " + event.getBundle().getBundleId()); |
| } |
| states.put(event.getBundle().getBundleId(), event); |
| } |
| |
| private BundleState mapEventToState(OsgiBundleApplicationContextEvent event) { |
| if (event == null) { |
| return BundleState.Unknown; |
| } else if (event instanceof BootstrappingDependencyEvent) { |
| return BundleState.Waiting; |
| } else if (event instanceof OsgiBundleContextFailedEvent) { |
| return BundleState.Failure; |
| } else if (event instanceof OsgiBundleContextRefreshedEvent) { |
| return BundleState.Active; |
| } else { |
| return BundleState.Unknown; |
| } |
| } |
| |
| public void bundleChanged(BundleEvent event) { |
| if (event.getType() == BundleEvent.UNINSTALLED) { |
| states.remove(event.getBundle().getBundleId()); |
| } |
| } |
| |
| } |