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