| /* |
| * 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.solr.util; |
| |
| import javax.management.MBeanServer; |
| import javax.management.MBeanServerFactory; |
| import javax.management.remote.JMXConnectorServer; |
| import javax.management.remote.JMXConnectorServerFactory; |
| import javax.management.remote.JMXServiceURL; |
| |
| import java.io.IOException; |
| import java.lang.management.ManagementFactory; |
| import java.util.List; |
| |
| /** |
| * Utility methods to find a MBeanServer. |
| */ |
| public final class JmxUtil { |
| |
| /** |
| * Retrieve the first MBeanServer found and if not found return the platform mbean server |
| * |
| * @return the first MBeanServer found |
| */ |
| public static MBeanServer findFirstMBeanServer() { |
| MBeanServer mBeanServer = findMBeanServerForAgentId(null); |
| if (mBeanServer == null) { |
| return ManagementFactory.getPlatformMBeanServer(); |
| } |
| return mBeanServer; |
| } |
| |
| /** |
| * Find a MBeanServer given a service url. |
| * |
| * @param serviceUrl the service url |
| * @return a MBeanServer |
| */ |
| public static MBeanServer findMBeanServerForServiceUrl(String serviceUrl) throws IOException { |
| if (serviceUrl == null) { |
| return null; |
| } |
| |
| MBeanServer server = MBeanServerFactory.newMBeanServer(); |
| JMXConnectorServer connector = JMXConnectorServerFactory |
| .newJMXConnectorServer(new JMXServiceURL(serviceUrl), null, server); |
| connector.start(); |
| |
| return server; |
| } |
| |
| /** |
| * Find a MBeanServer given an agent id. |
| * |
| * @param agentId the agent id |
| * @return a MBeanServer |
| */ |
| public static MBeanServer findMBeanServerForAgentId(String agentId) { |
| List<MBeanServer> servers = MBeanServerFactory.findMBeanServer(agentId); |
| if (servers == null || servers.isEmpty()) { |
| return null; |
| } |
| |
| return servers.get(0); |
| } |
| } |