| /* |
| * 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.management; |
| |
| import java.lang.management.ManagementFactory; |
| import java.util.List; |
| |
| import javax.management.MBeanServer; |
| |
| public class MBeanServerFactory { |
| |
| private boolean locateExistingServerIfPossible = false; |
| private String agentId; |
| private String defaultDomain; |
| private boolean registerWithFactory = true; |
| private MBeanServer server; |
| private boolean newlyRegistered = false; |
| |
| public boolean isLocateExistingServerIfPossible() { |
| return locateExistingServerIfPossible; |
| } |
| |
| public void setLocateExistingServerIfPossible(boolean locateExistingServerIfPossible) { |
| this.locateExistingServerIfPossible = locateExistingServerIfPossible; |
| } |
| |
| public String getAgentId() { |
| return agentId; |
| } |
| |
| public void setAgentId(String agentId) { |
| this.agentId = agentId; |
| } |
| |
| public String getDefaultDomain() { |
| return defaultDomain; |
| } |
| |
| public void setDefaultDomain(String defaultDomain) { |
| this.defaultDomain = defaultDomain; |
| } |
| |
| public boolean isRegisterWithFactory() { |
| return registerWithFactory; |
| } |
| |
| public void setRegisterWithFactory(boolean registerWithFactory) { |
| this.registerWithFactory = registerWithFactory; |
| } |
| |
| public boolean isNewlyRegistered() { |
| return newlyRegistered; |
| } |
| |
| public void setNewlyRegistered(boolean newlyRegistered) { |
| this.newlyRegistered = newlyRegistered; |
| } |
| |
| public MBeanServer getServer() throws Exception { |
| if (this.server == null) { |
| init(); |
| } |
| return server; |
| } |
| |
| public void init() throws Exception { |
| if (this.locateExistingServerIfPossible || this.agentId != null) { |
| try { |
| List servers = javax.management.MBeanServerFactory.findMBeanServer(agentId); |
| MBeanServer server = null; |
| if (servers != null && servers.size() > 0) { |
| this.server = (MBeanServer) servers.get(0); |
| } |
| if (server == null && agentId == null) { |
| this.server = ManagementFactory.getPlatformMBeanServer(); |
| } |
| if (this.server == null) { |
| throw new Exception("Unable to locate MBeanServer"); |
| } |
| } catch (Exception ex) { |
| if (this.agentId != null) { |
| throw ex; |
| } |
| } |
| } |
| if (this.server == null) { |
| if (this.registerWithFactory) { |
| this.server = javax.management.MBeanServerFactory.createMBeanServer(this.defaultDomain); |
| } else { |
| this.server = javax.management.MBeanServerFactory.newMBeanServer(this.defaultDomain); |
| } |
| this.newlyRegistered = this.registerWithFactory; |
| } |
| } |
| |
| public void destroy() throws Exception { |
| if (this.newlyRegistered) { |
| javax.management.MBeanServerFactory.releaseMBeanServer(this.server); |
| } |
| } |
| |
| } |