| /* |
| * 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.felix.eventadmin.impl.adapter; |
| |
| import java.util.Dictionary; |
| import java.util.Hashtable; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.FrameworkEvent; |
| import org.osgi.framework.FrameworkListener; |
| import org.osgi.service.event.Event; |
| import org.osgi.service.event.EventAdmin; |
| import org.osgi.service.event.EventConstants; |
| |
| /** |
| * This class registers itself as a listener for framework events and posts them via |
| * the EventAdmin as specified in 113.6.3 OSGi R4 compendium. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class FrameworkEventAdapter extends AbstractAdapter implements FrameworkListener |
| { |
| /** |
| * The constructor of the adapter. This will register the adapter with the |
| * given context as a {@code FrameworkListener} and subsequently, will |
| * post received events via the given EventAdmin. |
| * |
| * @param context The bundle context with which to register as a listener. |
| * @param admin The {@code EventAdmin} to use for posting events. |
| */ |
| public FrameworkEventAdapter(final BundleContext context, final EventAdmin admin) |
| { |
| super(admin); |
| |
| context.addFrameworkListener(this); |
| } |
| |
| @Override |
| public void destroy(BundleContext context) { |
| context.removeFrameworkListener(this); |
| } |
| |
| /** |
| * Once a framework event is received this method assembles and posts an event |
| * via the {@code EventAdmin} as specified in 113.6.3 OSGi R4 compendium. |
| * |
| * @param event The event to adapt. |
| */ |
| @Override |
| public void frameworkEvent(final FrameworkEvent event) |
| { |
| final Dictionary<String, Object> properties = new Hashtable<>(); |
| |
| properties.put(EventConstants.EVENT, event); |
| |
| final Bundle bundle = event.getBundle(); |
| |
| if (null != bundle) |
| { |
| properties.put("bundle.id", bundle.getBundleId()); |
| |
| final String symbolicName = bundle.getSymbolicName(); |
| |
| if (null != symbolicName) |
| { |
| properties.put(EventConstants.BUNDLE_SYMBOLICNAME, |
| symbolicName); |
| } |
| |
| properties.put("bundle", bundle); |
| } |
| |
| final Throwable thrown = event.getThrowable(); |
| |
| if (null != thrown) |
| { |
| properties.put(EventConstants.EXCEPTION_CLASS, |
| thrown.getClass().getName()); |
| |
| final String message = thrown.getMessage(); |
| |
| if (null != message) |
| { |
| properties.put(EventConstants.EXCEPTION_MESSAGE, |
| message); |
| } |
| |
| properties.put(EventConstants.EXCEPTION, thrown); |
| } |
| |
| final StringBuilder topic = new StringBuilder( |
| FrameworkEvent.class.getName().replace('.', '/')) |
| .append('/'); |
| |
| switch (event.getType()) |
| { |
| case FrameworkEvent.STARTED: |
| topic.append("STARTED"); |
| break; |
| case FrameworkEvent.ERROR: |
| topic.append("ERROR"); |
| break; |
| case FrameworkEvent.PACKAGES_REFRESHED: |
| topic.append("PACKAGES_REFRESHED"); |
| break; |
| case FrameworkEvent.STARTLEVEL_CHANGED: |
| topic.append("STARTLEVEL_CHANGED"); |
| break; |
| case FrameworkEvent.WARNING: |
| topic.append("WARNING"); |
| break; |
| case FrameworkEvent.INFO: |
| topic.append("INFO"); |
| break; |
| default: |
| return; // IGNORE EVENT |
| } |
| |
| try { |
| getEventAdmin().postEvent(new Event(topic.toString(), properties)); |
| } catch(IllegalStateException e) { |
| // This is o.k. - indicates that we are stopped. |
| } |
| } |
| } |