| /* |
| * |
| * 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.qpid.server.jmx; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.qpid.server.configuration.plugins.ConfigurationPluginFactory; |
| import org.apache.qpid.server.registry.ApplicationRegistry; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceRegistration; |
| |
| public class JMXActivator implements BundleActivator |
| { |
| private static final Logger LOGGER = Logger.getLogger(JMXActivator.class); |
| |
| private String _bundleName; |
| private JMXService _jmxService; |
| |
| private List<ServiceRegistration> _registeredServices; |
| |
| |
| public void start(final BundleContext ctx) throws Exception |
| { |
| boolean jmxManagementEnabled = ApplicationRegistry.getInstance().getConfiguration().getJMXManagementEnabled(); |
| |
| if (jmxManagementEnabled) |
| { |
| _jmxService = new JMXService(); |
| startJmsService(_jmxService); |
| |
| _bundleName = ctx.getBundle().getSymbolicName(); |
| |
| _registeredServices = registerServices(ctx); |
| } |
| else |
| { |
| LOGGER.debug("Skipping registration of JMX plugin as JMX Management disabled in config. "); |
| } |
| } |
| |
| public void stop(final BundleContext bundleContext) throws Exception |
| { |
| try |
| { |
| if (_jmxService != null) |
| { |
| if (LOGGER.isInfoEnabled()) |
| { |
| LOGGER.info("Stopping jmx plugin: " + _bundleName); |
| } |
| _jmxService.close(); |
| } |
| |
| if (_registeredServices != null) |
| { |
| unregisterServices(); |
| } |
| } |
| finally |
| { |
| _jmxService = null; |
| _registeredServices = null; |
| } |
| } |
| |
| |
| private List<ServiceRegistration> registerServices(BundleContext ctx) |
| { |
| if (LOGGER.isInfoEnabled()) |
| { |
| LOGGER.info("Registering jmx plugin: " + _bundleName); |
| } |
| |
| List<ServiceRegistration> serviceRegistrations = new ArrayList<ServiceRegistration>(); |
| |
| ServiceRegistration jmxServiceRegistration = ctx.registerService(JMXService.class.getName(), _jmxService, null); |
| ServiceRegistration jmxConfigFactoryRegistration = ctx.registerService(ConfigurationPluginFactory.class.getName(), JMXConfiguration.FACTORY, null); |
| |
| serviceRegistrations.add(jmxServiceRegistration); |
| serviceRegistrations.add(jmxConfigFactoryRegistration); |
| return serviceRegistrations; |
| } |
| |
| private void startJmsService(JMXService jmxService) throws Exception |
| { |
| if (LOGGER.isInfoEnabled()) |
| { |
| LOGGER.info("Starting JMX service"); |
| } |
| boolean startedSuccessfully = false; |
| try |
| { |
| jmxService.start(); |
| startedSuccessfully = true; |
| } |
| finally |
| { |
| if (!startedSuccessfully) |
| { |
| LOGGER.error("JMX failed to start normally, closing service"); |
| jmxService.close(); |
| } |
| } |
| } |
| |
| private void unregisterServices() |
| { |
| for (Iterator<ServiceRegistration> iterator = _registeredServices.iterator(); iterator.hasNext();) |
| { |
| ServiceRegistration service = iterator.next(); |
| service.unregister(); |
| } |
| } |
| } |