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| 1 | /* | ||
| 2 | * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.jstatd; | ||
| 27 | |||
| 28 | import java.rmi.*; | ||
| 29 | import java.rmi.server.*; | ||
| 30 | import java.rmi.registry.Registry; | ||
| 31 | import java.rmi.registry.LocateRegistry; | ||
| 32 | import java.net.MalformedURLException; | ||
| 33 | import sun.jvmstat.monitor.remote.*; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * Application providing remote access to the jvmstat instrumentation | ||
| 37 | * exported by local Java Virtual Machine processes. Remote access is | ||
| 38 | * provided through an RMI interface. | ||
| 39 | * | ||
| 40 | * @author Brian Doherty | ||
| 41 | * @since 1.5 | ||
| 42 | */ | ||
| 43 | public class Jstatd { | ||
| 44 | |||
| 45 | private static Registry registry; | ||
| 46 | private static int port = -1; | ||
| 47 | private static boolean startRegistry = true; | ||
| 48 | |||
| 49 | private static void printUsage() { | ||
| 50 | System.err.println("usage: jstatd [-nr] [-p port] [-n rminame]"); | ||
| 51 | } | ||
| 52 | |||
| 53 | static void bind(String name, RemoteHostImpl remoteHost) | ||
| 54 | throws RemoteException, MalformedURLException, Exception { | ||
| 55 | |||
| 56 | try { | ||
| 57 | Naming.rebind(name, remoteHost); | ||
| 58 | } catch (java.rmi.ConnectException e) { | ||
| 59 | /* | ||
| 60 | * either the registry is not running or we cannot contact it. | ||
| 61 | * start an internal registry if requested. | ||
| 62 | */ | ||
| 63 | if (startRegistry && registry == null) { | ||
| 64 | int localport = (port < 0) ? Registry.REGISTRY_PORT : port; | ||
| 65 | registry = LocateRegistry.createRegistry(localport); | ||
| 66 | bind(name, remoteHost); | ||
| 67 | } | ||
| 68 | else { | ||
| 69 | System.out.println("Could not contact registry\n" | ||
| 70 | + e.getMessage()); | ||
| 71 | e.printStackTrace(); | ||
| 72 | } | ||
| 73 | } catch (RemoteException e) { | ||
| 74 | System.err.println("Could not bind " + name + " to RMI Registry"); | ||
| 75 | e.printStackTrace(); | ||
| 76 | } | ||
| 77 | } | ||
| 78 | |||
| 79 | public static void main(String[] args) { | ||
| 80 | String rminame = null; | ||
| 81 | int argc = 0; | ||
| 82 | |||
| 83 | for ( ; (argc < args.length) && (args[argc].startsWith("-")); argc++) { | ||
| 84 | String arg = args[argc]; | ||
| 85 | |||
| 86 | if (arg.compareTo("-nr") == 0) { | ||
| 87 | startRegistry = false; | ||
| 88 | } else if (arg.startsWith("-p")) { | ||
| 89 | if (arg.compareTo("-p") != 0) { | ||
| 90 | port = Integer.parseInt(arg.substring(2)); | ||
| 91 | } else { | ||
| 92 | argc++; | ||
| 93 | if (argc >= args.length) { | ||
| 94 | printUsage(); | ||
| 95 | System.exit(1); | ||
| 96 | } | ||
| 97 | port = Integer.parseInt(args[argc]); | ||
| 98 | } | ||
| 99 | } else if (arg.startsWith("-n")) { | ||
| 100 | if (arg.compareTo("-n") != 0) { | ||
| 101 | rminame = arg.substring(2); | ||
| 102 | } else { | ||
| 103 | argc++; | ||
| 104 | if (argc >= args.length) { | ||
| 105 | printUsage(); | ||
| 106 | System.exit(1); | ||
| 107 | } | ||
| 108 | rminame = args[argc]; | ||
| 109 | } | ||
| 110 | } else { | ||
| 111 | printUsage(); | ||
| 112 | System.exit(1); | ||
| 113 | } | ||
| 114 | } | ||
| 115 | |||
| 116 | if (argc < args.length) { | ||
| 117 | printUsage(); | ||
| 118 | System.exit(1); | ||
| 119 | } | ||
| 120 | |||
| 121 | if (System.getSecurityManager() == null) { | ||
| 122 | System.setSecurityManager(new RMISecurityManager()); | ||
| 123 | } | ||
| 124 | |||
| 125 | StringBuilder name = new StringBuilder(); | ||
| 126 | |||
| 127 | if (port >= 0) { | ||
| 128 | name.append("//:").append(port); | ||
| 129 | } | ||
| 130 | |||
| 131 | if (rminame == null) { | ||
| 132 | rminame = "JStatRemoteHost"; | ||
| 133 | } | ||
| 134 | |||
| 135 | name.append("/").append(rminame); | ||
| 136 | |||
| 137 | try { | ||
| 138 | // use 1.5.0 dynamically generated subs. | ||
| 139 | System.setProperty("java.rmi.server.ignoreSubClasses", "true"); | ||
| 140 | RemoteHostImpl remoteHost = new RemoteHostImpl(); | ||
| 141 | RemoteHost stub = (RemoteHost) UnicastRemoteObject.exportObject( | ||
| 142 | remoteHost, 0); | ||
| 143 | bind(name.toString(), remoteHost); | ||
| 144 | } catch (MalformedURLException e) { | ||
| 145 | if (rminame != null) { | ||
| 146 | System.out.println("Bad RMI server name: " + rminame); | ||
| 147 | } else { | ||
| 148 | System.out.println("Bad RMI URL: " + name + " : " | ||
| 149 | + e.getMessage()); | ||
| 150 | } | ||
| 151 | System.exit(1); | ||
| 152 | } catch (java.rmi.ConnectException e) { | ||
| 153 | // could not attach to or create a registry | ||
| 154 | System.out.println("Could not contact RMI registry\n" | ||
| 155 | + e.getMessage()); | ||
| 156 | System.exit(1); | ||
| 157 | } catch (Exception e) { | ||
| 158 | System.out.println("Could not create remote object\n" | ||
| 159 | + e.getMessage()); | ||
| 160 | e.printStackTrace(); | ||
| 161 | System.exit(1); | ||
| 162 | } | ||
| 163 | } | ||
| 164 | } | ||