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/*
* Copyright (c) 2012, 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.
*
* 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.
*/
/*
* @test
* @bug 7009998
* @summary Tests the correct processing of concurrent ClientComunicatorAdmin reconnect requests.
* @author Jaroslav Bachorik
* @modules java.management/com.sun.jmx.remote.internal
* @run clean CCAdminReconnectTest
* @run build CCAdminReconnectTest
* @run main CCAdminReconnectTest
*/
import com.sun.jmx.remote.internal.ClientCommunicatorAdmin;
import java.io.*;
import java.util.Collection;
import java.util.LinkedList;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
public class CCAdminReconnectTest {
final private static int THREAD_COUNT = 3;
public static void main(String ... args) throws Exception {
final ExecutorService e = Executors.newFixedThreadPool(THREAD_COUNT);
final AtomicBoolean beingReconnected = new AtomicBoolean();
final Collection<Exception> thrownExceptions = new LinkedList<>();
System.out.println(": Testing concurrent restart of ClientCommunicatorAdmin");
final ClientCommunicatorAdmin cca = new ClientCommunicatorAdmin(50) {
@Override
protected void checkConnection() throws IOException {
// empty
}
@Override
protected void doStart() throws IOException {
if (!beingReconnected.compareAndSet(false, true)) {
IOException e = new IOException("Detected overlayed reconnect requests");
thrownExceptions.add(e);
throw e;
}
try {
Thread.sleep(800); // simulating a workload
beingReconnected.set(false);
} catch (InterruptedException e) {
}
}
@Override
protected void doStop() {
// empty
}
};
Runnable r = new Runnable() {
final private IOException e = new IOException("Forced reconnect");
@Override
public void run() {
try {
// forcing the reconnect request
cca.gotIOException(e);
} catch (Exception ex) {
ex.printStackTrace();
}
}
};
System.out.println(": Spawning " + THREAD_COUNT + " concurrent reconnect requests");
for(int i=0;i<THREAD_COUNT;i++) {
e.execute(r);
}
Thread.sleep(THREAD_COUNT * 1000);
e.shutdown();
e.awaitTermination(10, TimeUnit.SECONDS);
cca.terminate();
for(Exception thrown : thrownExceptions) {
throw thrown;
}
System.out.println(": Requests processed successfully");
}
}
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