1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * The contents of this file are subject to the terms of either the Universal Permissive License 7 * v 1.0 as shown at http://oss.oracle.com/licenses/upl 8 * 9 * or the following license: 10 * 11 * Redistribution and use in source and binary forms, with or without modification, are permitted 12 * provided that the following conditions are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions 15 * and the following disclaimer. 16 * 17 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of 18 * conditions and the following disclaimer in the documentation and/or other materials provided with 19 * the distribution. 20 * 21 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to 22 * endorse or promote products derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 26 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 27 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY 31 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 package org.openjdk.jmc.rjmx.test.subscription; 34 35 import static org.junit.Assert.assertNotNull; 36 import static org.junit.Assert.fail; 37 38 import javax.management.MBeanServerConnection; 39 40 import org.junit.Test; 41 42 import org.openjdk.jmc.rjmx.ConnectionToolkit; 43 import org.openjdk.jmc.rjmx.IConnectionHandle; 44 import org.openjdk.jmc.rjmx.subscription.IMRIValueListener; 45 import org.openjdk.jmc.rjmx.subscription.MRI; 46 import org.openjdk.jmc.rjmx.subscription.MRIValueEvent; 47 import org.openjdk.jmc.rjmx.subscription.MRI.Type; 48 import org.openjdk.jmc.rjmx.test.RjmxTestCase; 49 import org.openjdk.jmc.rjmx.test.testutil.TestToolkit; 50 51 /** 52 * Tests attribute subscriptions based on JMX notification. 53 */ 54 public class NotificationAttributeSubscriptionTest extends RjmxTestCase implements IMRIValueListener { 55 private final static int SLEEP_TIME = 6000; 56 57 /** 58 * Tests the normal one shot subscription to the strategy. 59 */ 60 @Test 61 public void testGetGCSubscription() { 62 try { 63 // RMP does not support notifications 64 MRI descriptor = null; 65 synchronized (this) { 66 // Starting up a subscription on a one shot attribute. 67 descriptor = new MRI(Type.NOTIFICATION, "com.sun.management:type=GarbageCollectionAggregator", //$NON-NLS-1$ 68 "com.sun.management.gc.notification"); //$NON-NLS-1$ 69 getAttributeSubscriptionService().addMRIValueListener(descriptor, this); 70 71 secondThreadException = null; 72 final IConnectionHandle threadModel = m_connectionHandle; 73 new Thread(new Runnable() { 74 @Override 75 public void run() { 76 synchronized (NotificationAttributeSubscriptionTest.this) { 77 try { 78 ConnectionToolkit 79 .getMemoryBean(threadModel.getServiceOrThrow(MBeanServerConnection.class)).gc(); 80 } catch (Exception e) { 81 secondThreadException = e; 82 } 83 } 84 } 85 }).start(); 86 wait(SLEEP_TIME); 87 if (secondThreadException != null) { 88 throw secondThreadException; 89 } 90 } 91 assertNotNull(getAttributeSubscriptionService().getLastMRIValueEvent(descriptor)); 92 getAttributeSubscriptionService().removeMRIValueListener(this); 93 } catch (Exception e) { 94 e.printStackTrace(); 95 fail(e.getMessage()); 96 } 97 } 98 99 private Exception secondThreadException = null; 100 101 /** 102 * @param event 103 * @see IMRIValueListener#valueChanged(MRIValueEvent) 104 */ 105 @Override 106 public synchronized void valueChanged(MRIValueEvent event) { 107 TestToolkit.println(event); 108 // Only notify if we got a real server side event 109 if (event.getValue() != null) { 110 notifyAll(); 111 } 112 } 113 }