104 lines
3.5 KiB
Java
104 lines
3.5 KiB
Java
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/*
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* Copyright (c) 2012, 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.
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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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import java.io.File;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.util.Objects;
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import sun.management.jdp.JdpJmxPacket;
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import sun.management.jdp.JdpException;
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public class JdpDoSomething {
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private static final String lockFileName = "JdpDoSomething.lck";
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private static final boolean verbose=false;
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public static boolean getVerbose(){
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return verbose;
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}
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public static void printJdpPacket(JdpJmxPacket p) {
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if (getVerbose()) {
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try {
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RandomAccessFile f = new RandomAccessFile("out.dmp", "rw");
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f.write(p.getPacketData());
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f.close();
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} catch (IOException e) {
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System.out.println("Can't write a dump file: " + e);
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}
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System.out.println("Id: " + p.getId());
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System.out.println("Jmx: " + p.getJmxServiceUrl());
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System.out.println("Main: " + p.getMainClass());
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System.out.println("InstanceName: " + p.getInstanceName());
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System.out.flush();
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}
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}
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public static void compaireJdpPacketEx(JdpJmxPacket p1, JdpJmxPacket p2)
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throws JdpException {
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if (!Objects.equals(p1, p1)) {
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throw new JdpException("Packet mismatch error");
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}
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if (!Objects.equals(p1.getMainClass(), p2.getMainClass())) {
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throw new JdpException("Packet mismatch error (main class)");
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}
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if (!Objects.equals(p1.getInstanceName(), p2.getInstanceName())) {
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throw new JdpException("Packet mismatch error (instance name)");
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}
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}
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public static void doSomething() {
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try {
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File lockFile = new File(lockFileName);
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lockFile.createNewFile();
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while (lockFile.exists()) {
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long datetime = lockFile.lastModified();
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long epoch = System.currentTimeMillis() / 1000;
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// Don't allow test app to run more than an hour
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if (epoch - datetime > 3600) {
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System.err.println("Lock is too old. Aborting");
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return;
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}
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Thread.sleep(1);
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}
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} catch (Throwable e) {
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System.err.println("Something bad happens:" + e);
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}
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}
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public static void main(String args[]) throws Exception {
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System.err.println("main enter");
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doSomething();
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System.err.println("main exit");
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}
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}
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