| /* |
| * Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.jstatd; |
| |
| import java.rmi.*; |
| import java.rmi.server.*; |
| import java.rmi.registry.Registry; |
| import java.rmi.registry.LocateRegistry; |
| import java.net.MalformedURLException; |
| import sun.jvmstat.monitor.remote.*; |
| |
| /** |
| * Application providing remote access to the jvmstat instrumentation |
| * exported by local Java Virtual Machine processes. Remote access is |
| * provided through an RMI interface. |
| * |
| * @author Brian Doherty |
| * @since 1.5 |
| */ |
| public class Jstatd { |
| |
| private static Registry registry; |
| private static int port = -1; |
| private static boolean startRegistry = true; |
| |
| private static void printUsage() { |
| System.err.println("usage: jstatd [-nr] [-p port] [-n rminame]"); |
| } |
| |
| static void bind(String name, RemoteHostImpl remoteHost) |
| throws RemoteException, MalformedURLException, Exception { |
| |
| try { |
| Naming.rebind(name, remoteHost); |
| } catch (java.rmi.ConnectException e) { |
| /* |
| * either the registry is not running or we cannot contact it. |
| * start an internal registry if requested. |
| */ |
| if (startRegistry && registry == null) { |
| int localport = (port < 0) ? Registry.REGISTRY_PORT : port; |
| registry = LocateRegistry.createRegistry(localport); |
| bind(name, remoteHost); |
| } else { |
| throw e; |
| } |
| } |
| } |
| |
| @SuppressWarnings("deprecation") // Use of RMISecurityManager |
| public static void main(String[] args) { |
| String rminame = null; |
| int argc = 0; |
| |
| for ( ; (argc < args.length) && (args[argc].startsWith("-")); argc++) { |
| String arg = args[argc]; |
| |
| if (arg.compareTo("-nr") == 0) { |
| startRegistry = false; |
| } else if (arg.startsWith("-p")) { |
| if (arg.compareTo("-p") != 0) { |
| port = Integer.parseInt(arg.substring(2)); |
| } else { |
| argc++; |
| if (argc >= args.length) { |
| printUsage(); |
| System.exit(1); |
| } |
| port = Integer.parseInt(args[argc]); |
| } |
| } else if (arg.startsWith("-n")) { |
| if (arg.compareTo("-n") != 0) { |
| rminame = arg.substring(2); |
| } else { |
| argc++; |
| if (argc >= args.length) { |
| printUsage(); |
| System.exit(1); |
| } |
| rminame = args[argc]; |
| } |
| } else { |
| printUsage(); |
| System.exit(1); |
| } |
| } |
| |
| if (argc < args.length) { |
| printUsage(); |
| System.exit(1); |
| } |
| |
| if (System.getSecurityManager() == null) { |
| System.setSecurityManager(new RMISecurityManager()); |
| } |
| |
| StringBuilder name = new StringBuilder(); |
| |
| if (port >= 0) { |
| name.append("//:").append(port); |
| } |
| |
| if (rminame == null) { |
| rminame = "JStatRemoteHost"; |
| } |
| |
| name.append("/").append(rminame); |
| |
| try { |
| // use 1.5.0 dynamically generated subs. |
| System.setProperty("java.rmi.server.ignoreSubClasses", "true"); |
| RemoteHostImpl remoteHost = new RemoteHostImpl(); |
| RemoteHost stub = (RemoteHost) UnicastRemoteObject.exportObject( |
| remoteHost, 0); |
| bind(name.toString(), remoteHost); |
| System.out.println("jstatd started (bound to " + name.toString() + ")"); |
| System.out.flush(); |
| } catch (MalformedURLException e) { |
| if (rminame != null) { |
| System.out.println("Bad RMI server name: " + rminame); |
| } else { |
| System.out.println("Bad RMI URL: " + name); |
| } |
| e.printStackTrace(System.out); |
| System.exit(1); |
| } catch (java.rmi.ConnectException e) { |
| // could not attach to or create a registry |
| System.out.println("Could not contact RMI registry"); |
| e.printStackTrace(System.out); |
| System.exit(1); |
| } catch (RemoteException e) { |
| System.out.println("Could not bind " + name + " to RMI Registry"); |
| e.printStackTrace(System.out); |
| System.exit(1); |
| } catch (Exception e) { |
| System.out.println("Could not create remote object"); |
| e.printStackTrace(System.out); |
| System.exit(1); |
| } |
| } |
| } |