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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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.
*
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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 RemoteHost remoteHost;
private static void printUsage() {
System.err.println("usage: jstatd [-nr] [-p port] [-n rminame]\n" +
" jstatd -?|-h|--help");
}
static void bind(String name, RemoteHost 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("-?") == 0 ||
arg.compareTo("-h") == 0 ||
arg.compareTo("--help") == 0) {
printUsage();
System.exit(0);
} else 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");
remoteHost = new RemoteHostImpl();
RemoteHost stub = (RemoteHost) UnicastRemoteObject.exportObject(
remoteHost, 0);
bind(name.toString(), stub);
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);
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