1 /* 2 * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6701459 27 * @summary Test sequence numbers in RelationService notifications. 28 * @author Eamonn McManus 29 * @modules java.management 30 */ 31 32 /* 33 * Bug 6701459 is for a synchronization problem that is very unlikely to occur 34 * in practice and it would be very hard to test it. Instead we just check that 35 * the fix has not introduced any obviously-wrong behavior in the sequence 36 * numbers. 37 */ 38 39 import java.util.Arrays; 40 import java.util.concurrent.ArrayBlockingQueue; 41 import java.util.concurrent.BlockingQueue; 42 import javax.management.JMX; 43 import javax.management.MBeanServer; 44 import javax.management.MBeanServerFactory; 45 import javax.management.Notification; 46 import javax.management.NotificationListener; 47 import javax.management.ObjectName; 48 import javax.management.relation.RelationServiceMBean; 49 import javax.management.relation.Role; 50 import javax.management.relation.RoleInfo; 51 import javax.management.relation.RoleList; 52 53 public class RelationNotificationSeqNoTest { 54 public static void main(String[] args) throws Exception { 55 MBeanServer mbs = MBeanServerFactory.newMBeanServer(); 56 ObjectName relSvcName = new ObjectName("a:type=relationService"); 57 RelationServiceMBean relSvc = 58 JMX.newMBeanProxy(mbs, relSvcName, RelationServiceMBean.class); 59 mbs.createMBean("javax.management.relation.RelationService", 60 relSvcName, 61 new Object[] {Boolean.TRUE}, 62 new String[] {"boolean"}); 63 64 final BlockingQueue<Notification> q = 65 new ArrayBlockingQueue<Notification>(100); 66 NotificationListener qListener = new NotificationListener() { 67 public void handleNotification(Notification notification, 68 Object handback) { 69 q.add(notification); 70 } 71 }; 72 mbs.addNotificationListener(relSvcName, qListener, null, null); 73 74 RoleInfo leftInfo = 75 new RoleInfo("left", "javax.management.timer.TimerMBean"); 76 RoleInfo rightInfo = 77 new RoleInfo("right", "javax.management.timer.Timer"); 78 relSvc.createRelationType("typeName", new RoleInfo[] {leftInfo, rightInfo}); 79 ObjectName timer1 = new ObjectName("a:type=timer,number=1"); 80 ObjectName timer2 = new ObjectName("a:type=timer,number=2"); 81 mbs.createMBean("javax.management.timer.Timer", timer1); 82 mbs.createMBean("javax.management.timer.Timer", timer2); 83 84 Role leftRole = 85 new Role("left", Arrays.asList(new ObjectName[] {timer1})); 86 Role rightRole = 87 new Role("right", Arrays.asList(new ObjectName[] {timer2})); 88 RoleList roles = 89 new RoleList(Arrays.asList(new Role[] {leftRole, rightRole})); 90 91 final int NREPEAT = 10; 92 93 for (int i = 0; i < NREPEAT; i++) { 94 relSvc.createRelation("relationName", "typeName", roles); 95 relSvc.removeRelation("relationName"); 96 } 97 98 Notification firstNotif = q.remove(); 99 long seqNo = firstNotif.getSequenceNumber(); 100 for (int i = 0; i < NREPEAT * 2 - 1; i++) { 101 Notification n = q.remove(); 102 long nSeqNo = n.getSequenceNumber(); 103 if (nSeqNo != seqNo + 1) { 104 throw new Exception( 105 "TEST FAILED: expected seqNo " + (seqNo + 1) + "; got " + 106 nSeqNo); 107 } 108 seqNo++; 109 } 110 System.out.println("TEST PASSED: got " + (NREPEAT * 2) + " notifications " + 111 "with contiguous sequence numbers"); 112 } 113 }