Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.jmx; |
| 20 | |
| 21 | import java.lang.management.ManagementFactory; |
| 22 | import java.net.InetAddress; |
| 23 | import java.net.ServerSocket; |
| 24 | import java.rmi.registry.LocateRegistry; |
| 25 | import java.rmi.registry.Registry; |
| 26 | import java.rmi.server.UnicastRemoteObject; |
| 27 | import java.util.Map; |
| 28 | |
| 29 | import javax.management.MBeanServer; |
| 30 | import javax.management.ObjectName; |
| 31 | import javax.management.remote.JMXConnectorServer; |
| 32 | import javax.management.remote.JMXConnectorServerFactory; |
| 33 | import javax.management.remote.JMXServiceURL; |
| 34 | |
| 35 | import org.eclipse.jetty.util.component.AbstractLifeCycle; |
| 36 | import org.eclipse.jetty.util.log.Log; |
| 37 | import org.eclipse.jetty.util.log.Logger; |
| 38 | import org.eclipse.jetty.util.thread.ShutdownThread; |
| 39 | |
| 40 | |
| 41 | /* ------------------------------------------------------------ */ |
| 42 | /** |
| 43 | * AbstractLifeCycle wrapper for JMXConnector Server |
| 44 | */ |
| 45 | public class ConnectorServer extends AbstractLifeCycle |
| 46 | { |
| 47 | private static final Logger LOG = Log.getLogger(ConnectorServer.class); |
| 48 | |
| 49 | JMXConnectorServer _connectorServer; |
| 50 | Registry _registry; |
| 51 | |
| 52 | /* ------------------------------------------------------------ */ |
| 53 | /** |
| 54 | * Constructs connector server |
| 55 | * |
| 56 | * @param serviceURL the address of the new connector server. |
| 57 | * The actual address of the new connector server, as returned |
| 58 | * by its getAddress method, will not necessarily be exactly the same. |
| 59 | * @param name object name string to be assigned to connector server bean |
| 60 | * @throws Exception |
| 61 | */ |
| 62 | public ConnectorServer(JMXServiceURL serviceURL, String name) |
| 63 | throws Exception |
| 64 | { |
| 65 | this(serviceURL, null, name); |
| 66 | } |
| 67 | |
| 68 | /* ------------------------------------------------------------ */ |
| 69 | /** |
| 70 | * Constructs connector server |
| 71 | * |
| 72 | * @param svcUrl the address of the new connector server. |
| 73 | * The actual address of the new connector server, as returned |
| 74 | * by its getAddress method, will not necessarily be exactly the same. |
| 75 | * @param environment a set of attributes to control the new connector |
| 76 | * server's behavior. This parameter can be null. Keys in this map must |
| 77 | * be Strings. The appropriate type of each associated value depends on |
| 78 | * the attribute. The contents of environment are not changed by this call. |
| 79 | * @param name object name string to be assigned to connector server bean |
| 80 | * @throws Exception |
| 81 | */ |
| 82 | public ConnectorServer(JMXServiceURL svcUrl, Map<String,?> environment, String name) |
| 83 | throws Exception |
| 84 | { |
| 85 | String urlPath = svcUrl.getURLPath(); |
| 86 | int idx = urlPath.indexOf("rmi://"); |
| 87 | if (idx > 0) |
| 88 | { |
| 89 | String hostPort = urlPath.substring(idx+6, urlPath.indexOf('/', idx+6)); |
| 90 | String regHostPort = startRegistry(hostPort); |
| 91 | if (regHostPort != null) { |
| 92 | urlPath = urlPath.replace(hostPort,regHostPort); |
| 93 | svcUrl = new JMXServiceURL(svcUrl.getProtocol(), svcUrl.getHost(), svcUrl.getPort(), urlPath); |
| 94 | } |
| 95 | } |
| 96 | MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer(); |
| 97 | _connectorServer = JMXConnectorServerFactory.newJMXConnectorServer(svcUrl, environment, mbeanServer); |
| 98 | mbeanServer.registerMBean(_connectorServer,new ObjectName(name)); |
| 99 | } |
| 100 | |
| 101 | /* ------------------------------------------------------------ */ |
| 102 | /** |
| 103 | * @see org.eclipse.jetty.util.component.AbstractLifeCycle#doStart() |
| 104 | */ |
| 105 | @Override |
| 106 | public void doStart() |
| 107 | throws Exception |
| 108 | { |
| 109 | _connectorServer.start(); |
| 110 | ShutdownThread.register(0, this); |
| 111 | |
| 112 | LOG.info("JMX Remote URL: {}", _connectorServer.getAddress().toString()); |
| 113 | } |
| 114 | |
| 115 | /* ------------------------------------------------------------ */ |
| 116 | /** |
| 117 | * @see org.eclipse.jetty.util.component.AbstractLifeCycle#doStop() |
| 118 | */ |
| 119 | @Override |
| 120 | public void doStop() |
| 121 | throws Exception |
| 122 | { |
| 123 | ShutdownThread.deregister(this); |
| 124 | _connectorServer.stop(); |
| 125 | stopRegistry(); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Check that local RMI registry is used, and ensure it is started. If local RMI registry is being used and not started, start it. |
| 130 | * |
| 131 | * @param hostPath |
| 132 | * hostname and port number of RMI registry |
| 133 | * @throws Exception |
| 134 | */ |
| 135 | private String startRegistry(String hostPath) throws Exception |
| 136 | { |
| 137 | int rmiPort = 1099; // default RMI registry port |
| 138 | String rmiHost = hostPath; |
| 139 | |
| 140 | int idx = hostPath.indexOf(':'); |
| 141 | if (idx > 0) |
| 142 | { |
| 143 | rmiPort = Integer.parseInt(hostPath.substring(idx + 1)); |
| 144 | rmiHost = hostPath.substring(0,idx); |
| 145 | } |
| 146 | |
| 147 | // Verify that local registry is being used |
| 148 | InetAddress hostAddress = InetAddress.getByName(rmiHost); |
| 149 | if(hostAddress.isLoopbackAddress()) |
| 150 | { |
| 151 | if (rmiPort == 0) |
| 152 | { |
| 153 | ServerSocket socket = new ServerSocket(0); |
| 154 | rmiPort = socket.getLocalPort(); |
| 155 | socket.close(); |
| 156 | } |
| 157 | else |
| 158 | { |
| 159 | try |
| 160 | { |
| 161 | // Check if a local registry is already running |
| 162 | LocateRegistry.getRegistry(rmiPort).list(); |
| 163 | return null; |
| 164 | } |
| 165 | catch (Exception ex) |
| 166 | { |
| 167 | LOG.ignore(ex); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | _registry = LocateRegistry.createRegistry(rmiPort); |
| 172 | Thread.sleep(1000); |
| 173 | |
| 174 | rmiHost = InetAddress.getLocalHost().getCanonicalHostName(); |
| 175 | return rmiHost + ':' + Integer.toString(rmiPort); |
| 176 | } |
| 177 | |
| 178 | return null; |
| 179 | } |
| 180 | |
| 181 | private void stopRegistry() |
| 182 | { |
| 183 | if (_registry != null) |
| 184 | { |
| 185 | try |
| 186 | { |
| 187 | UnicastRemoteObject.unexportObject(_registry,true); |
| 188 | } |
| 189 | catch (Exception ex) |
| 190 | { |
| 191 | LOG.ignore(ex); |
| 192 | } |
| 193 | } |
| 194 | } |
| 195 | } |