| /* |
| * Copyright (c) 2012, 2013, 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.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.util.Objects; |
| |
| import sun.management.jdp.JdpJmxPacket; |
| import sun.management.jdp.JdpException; |
| |
| public class JdpDoSomething { |
| |
| private static final String lockFileName = "JdpDoSomething.lck"; |
| private static final boolean verbose = false; |
| |
| public static boolean getVerbose(){ |
| return verbose; |
| } |
| |
| public static void printJdpPacket(JdpJmxPacket p) { |
| if (getVerbose()) { |
| try { |
| RandomAccessFile f = new RandomAccessFile("out.dmp", "rw"); |
| f.write(p.getPacketData()); |
| f.close(); |
| } catch (IOException e) { |
| System.out.println("Can't write a dump file: " + e); |
| } |
| |
| System.out.println("Id: " + p.getId()); |
| System.out.println("Jmx: " + p.getJmxServiceUrl()); |
| System.out.println("Main: " + p.getMainClass()); |
| System.out.println("InstanceName: " + p.getInstanceName()); |
| System.out.println("ProccessId: " + p.getProcessId()); |
| System.out.println("BroadcastInterval: " + p.getBroadcastInterval()); |
| System.out.println("Rmi Hostname: " + p.getRmiHostname()); |
| |
| System.out.flush(); |
| } |
| } |
| |
| public static void compaireJdpPacketEx(JdpJmxPacket p1, JdpJmxPacket p2) |
| throws JdpException { |
| |
| if (!Objects.equals(p1, p1)) { |
| throw new JdpException("Packet mismatch error"); |
| } |
| |
| if (!Objects.equals(p1.getMainClass(), p2.getMainClass())) { |
| throw new JdpException("Packet mismatch error (main class)"); |
| } |
| |
| if (!Objects.equals(p1.getInstanceName(), p2.getInstanceName())) { |
| throw new JdpException("Packet mismatch error (instance name)"); |
| } |
| } |
| |
| public static void doSomething() { |
| try { |
| File lockFile = new File(lockFileName); |
| lockFile.createNewFile(); |
| |
| while (lockFile.exists()) { |
| long datetime = lockFile.lastModified(); |
| long epoch = System.currentTimeMillis() / 1000; |
| |
| // Don't allow test app to run more than an hour |
| if (epoch - datetime > 3600) { |
| System.err.println("Lock is too old. Aborting"); |
| return; |
| } |
| Thread.sleep(1); |
| } |
| |
| } catch (Throwable e) { |
| System.err.println("Something bad happens:" + e); |
| } |
| } |
| |
| public static void main(String args[]) throws Exception { |
| System.err.println("main enter"); |
| doSomething(); |
| System.err.println("main exit"); |
| } |
| } |