J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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 | } |