| /* |
| * 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; |
| |
| import org.apache.felix.eventadmin.impl.util.LogWrapper; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * The activator of the EventAdmin bundle. This class registers an implementation of |
| * the OSGi R4 <tt>EventAdmin</tt> service (see the Compendium 113) with the |
| * framework. It features timeout-based blacklisting of event-handlers for both, |
| * asynchronous and synchronous event-dispatching (as a spec conform optional |
| * extension). |
| * |
| * @see Configuration For configuration features of the event admin. |
| * |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| // TODO: Security is in place but untested due to not being implemented by the |
| // framework. However, it needs to be revisited once security is implemented. |
| // Two places are affected by this namely, security/* and handler/* |
| public class Activator implements BundleActivator |
| { |
| private volatile Configuration m_config; |
| |
| /** |
| * Called upon starting of the bundle. Constructs and registers the EventAdmin |
| * service with the framework. Note that the properties of the service are |
| * requested from the context in this method hence, the bundle has to be |
| * restarted in order to take changed properties into account. |
| * |
| * @param context The bundle context passed by the framework |
| * |
| * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext) |
| */ |
| public void start(final BundleContext context) |
| { |
| // init the LogWrapper. Subsequently, the static methods of the LogWrapper |
| // can be used to log messages similar to the LogService. The effect of a |
| // call to any of this methods is either a print to standard out (in case |
| // no LogService is present) or a call to the respective method of |
| // available LogServices (the reason is that this way the bundle is |
| // independent of the org.osgi.service.log package) |
| LogWrapper.setContext(context); |
| |
| // this creates the event admin and starts it |
| m_config = new Configuration(context); |
| } |
| |
| /** |
| * Called upon stopping the bundle. This will block until all pending events are |
| * delivered. An IllegalStateException will be thrown on new events starting with |
| * the begin of this method. However, it might take some time until we settle |
| * down which is somewhat cumbersome given that the spec asks for return in |
| * a timely manner. |
| * |
| * @param context The bundle context passed by the framework |
| * |
| * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext) |
| */ |
| public void stop(final BundleContext context) |
| { |
| if ( m_config != null ) |
| { |
| m_config.destroy(); |
| } |
| m_config = null; |
| |
| // FELIX-2089: "unset" the bundle context on stop |
| LogWrapper.setContext(null); |
| } |
| } |