Java example source code file (DcmdMBeanDoubleInvocationTest.java)

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Java - Java tags/keywords

dcmdmbeandoubleinvocationtest, error, exception, failed, hotspot_diagnostic_mxbean_name, illegalargumentexception, jmxconnector, jmxserviceurl, management, mbeanserver, mbeanserverconnection, objectname, runtimembeanexception, string, test

The DcmdMBeanDoubleInvocationTest.java Java example source code

/*
 * Copyright (c) 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.
 */

/*
 * @test
 * @bug     7150256
 * @summary Basic Test for the DiagnosticCommandMBean
 * @author  Frederic Parain, Shanliang JIANG
 *
 * @run main/othervm DcmdMBeanDoubleInvocationTest
 */


import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.management.*;
import javax.management.remote.*;

public class DcmdMBeanDoubleInvocationTest {

    private static String HOTSPOT_DIAGNOSTIC_MXBEAN_NAME =
        "com.sun.management:type=DiagnosticCommand";

    public static void main(String[] args) throws Exception {
        System.out.println("--->JRCMD MBean Test: invocation on \"help VM.version\" ...");

        ObjectName name = new ObjectName(HOTSPOT_DIAGNOSTIC_MXBEAN_NAME);
        String[] helpArgs = {"-all", "\n", "VM.version"};
        Object[] dcmdArgs = {helpArgs};
        String[] signature = {String[].class.getName()};

        MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
        JMXServiceURL url = new JMXServiceURL("rmi", null, 0);
        JMXConnectorServer cs = null;
        JMXConnector cc = null;
        try {
            cs = JMXConnectorServerFactory.newJMXConnectorServer(url, null, mbs);
            cs.start();
            JMXServiceURL addr = cs.getAddress();
            cc = JMXConnectorFactory.connect(addr);
            MBeanServerConnection mbsc = cc.getMBeanServerConnection();

            String result = (String) mbsc.invoke(name, "help", dcmdArgs, signature);
            System.out.println(result);

            throw new Error("Test failed: Double commands have not been detected");
        } catch (RuntimeMBeanException ex) {
            if (ex.getCause() instanceof IllegalArgumentException) {
                System.out.println("JTest passed: Double commands have been detected");
            } else {
                ex.printStackTrace();
                throw new Error("TEST FAILED: got unknown exception "+ex);
            }
        } finally {
            try {
                cc.close();
                cs.stop();
            } catch (Exception e) {
            }
        }
    }
}