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/*
* Copyright (c) 1999, 2017, 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.
*
* 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.
*/
/**/
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
/**
* Class to run a registry whose VM can be told to exit remotely; using
* a registry (in a sub-process) in this fashion makes tests more robust under
* windows where Process.destroy() seems not to be 100% reliable.
*/
public class RegistryRunner extends UnicastRemoteObject
implements RemoteExiter
{
private static final String PORT_LABEL_START = "RegistryRunner.port.start:";
private static final String PORT_LABEL_END = ":RegistryRunner.port.end";
protected static Registry registry = null;
protected static RemoteExiter exiter = null;
public RegistryRunner() throws RemoteException {
}
/**
* Ask the registry to exit instead of forcing it do so; this
* works better on windows...
*/
public void exit() throws RemoteException {
// REMIND: create a thread to do this to avoid
// a remote exception?
System.err.println("received call to exit");
System.exit(0);
}
/**
* Request that the registry process exit and handle
* related exceptions.
*/
public static void requestExit(int port) {
try {
RemoteExiter e =
(RemoteExiter)
Naming.lookup("rmi://localhost:" +
port +
"/RemoteExiter");
try {
e.exit();
} catch (RemoteException re) {
}
e = null;
} catch (java.net.MalformedURLException mfue) {
// will not happen
} catch (NotBoundException nbe) {
TestLibrary.bomb("exiter not bound?", nbe);
} catch (RemoteException re) {
TestLibrary.bomb("remote exception trying to exit",
re);
}
}
public static int getRegistryPort(String output) {
int idxStart = output.indexOf(PORT_LABEL_START);
int idxEnd = output.indexOf(PORT_LABEL_END);
if (idxStart == -1 || idxEnd == -1) {
return -1;
}
idxStart = idxStart+PORT_LABEL_START.length();
String portStr = output.substring(idxStart, idxEnd);
int port = Integer.valueOf(portStr);
System.err.println("registry is running at port: " + port);
return port;
}
/**
* port 0 means to use ephemeral port to start registry.
*
* @param args command line arguments passed in from main
* @return the port number on which registry accepts requests
*/
protected static int init(String[] args) {
try {
if (args.length == 0) {
System.err.println("Usage: <port>");
System.exit(0);
}
int port = -1;
port = Integer.parseInt(args[0]);
// create a registry
registry = LocateRegistry.createRegistry(port);
if (port == 0) {
port = TestLibrary.getRegistryPort(registry);
}
// create a remote object to tell this VM to exit
exiter = new RegistryRunner();
Naming.rebind("rmi://localhost:" + port +
"/RemoteExiter", exiter);
return port;
} catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
System.exit(-1);
}
return -1;
}
/**
* RegistryVM.start() will filter the output of registry subprocess,
* when valid port is detected, RegistryVM.start() returns.
* So, for subclass, it's important to call this method after registry
* is initialized and necessary remote objects have been bound.
*
* @param port the port on which registry accepts requests
*/
protected static void notify(int port) {
// this output is important for RegistryVM to get the port
// where rmiregistry is serving
System.out.println(PORT_LABEL_START + port + PORT_LABEL_END);
System.out.flush();
}
public static void main(String[] args) {
int port = init(args);
notify(port);
}
}
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