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* version 2 for more details (a copy is included in the LICENSE file that
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/* @test
* @bug 4120329
* @summary RMI registry creation is impossible if first attempt fails.
* @library ../../testlibrary
* @build TestLibrary JavaVM RegistryRunner RegistryRunner_Stub
* @run main/othervm Reexport
*/
/*
* If a VM could not create an RMI registry because another registry
* usually in another process, was using the registry port, the next
* time the VM tried to create a registry (after the other registry
* was brought down) the attempt would fail. The second try to create
* a registry would fail because the registry ObjID would still be in
* use when it should never have been allocated.
*
* The test creates this conflict using Runtime.exec and ensures that
* a registry can still be created after the conflict is resolved.
*/
import java.io.*;
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
public class Reexport {
static public void main(String[] argv) {
Registry reg = null;
int regPort = TestLibrary.getUnusedRandomPort();
try {
System.err.println("\nregression test for 4120329\n");
// establish the registry (we hope)
System.err.println("Starting registry on port " + regPort);
Reexport.makeRegistry(regPort);
// Get a handle to the registry
System.err.println("Creating duplicate registry, this should fail...");
reg = createReg(true, regPort);
if (reg != null) {
TestLibrary.bomb("failed was able to duplicate the registry?!?");
}
// Kill the first registry.
System.err.println("Bringing down the first registry");
try {
Reexport.killRegistry(regPort);
} catch (Exception foo) {
}
// start another registry now that the first is gone; this should work
System.err.println("Trying again to start our own " +
"registry... this should work");
reg = createReg(false, regPort);
if (reg == null) {
TestLibrary.bomb("Could not create registry on second try");
}
System.err.println("Test passed");
} catch (Exception e) {
TestLibrary.bomb(e);
} finally {
// dont leave the registry around to affect other tests.
killRegistry(regPort);
reg = null;
}
}
static Registry createReg(boolean remoteOk, int port) {
Registry reg = null;
try {
reg = LocateRegistry.createRegistry(port);
} catch (Throwable e) {
if (remoteOk) {
System.err.println("EXPECTING PORT IN USE EXCEPTION:");
System.err.println(e.getMessage());
e.printStackTrace();
} else {
TestLibrary.bomb((Exception) e);
}
}
return reg;
}
public static void makeRegistry(int p) {
// sadly, we can't kill a registry if we have too-close control
// over it. We must make it in a subprocess, and then kill the
// subprocess when it has served our needs.
try {
JavaVM jvm = new JavaVM("RegistryRunner", "", Integer.toString(p));
jvm.start();
Reexport.subreg = jvm;
} catch (IOException e) {
// one of these is summarily dropped, can't remember which one
System.out.println ("Test setup failed - cannot run rmiregistry");
TestLibrary.bomb("Test setup failed - cannot run test", e);
}
// Slop - wait for registry to come up. This is stupid.
try {
Thread.sleep (5000);
} catch (Exception whatever) {
}
}
private static JavaVM subreg = null;
public static void killRegistry(int port) {
if (Reexport.subreg != null) {
RegistryRunner.requestExit(port);
try {
Reexport.subreg.waitFor();
} catch (InterruptedException ie) {
}
}
Reexport.subreg = null;
}
}