1 /* 2 * Copyright (c) 2005, 2008, 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 */ 30 31 /* 32 * Bug 6701459 is for a synchronization problem that is very unlikely to occur 33 * in practice and it would be very hard to test it. Instead we just check that 34 * the fix has not introduced any obviously-wrong behavior in the sequence 35 * numbers. 36 */ 37 38 import java.util.Arrays; 39 import java.util.concurrent.ArrayBlockingQueue; 40 import java.util.concurrent.BlockingQueue; 41 import javax.management.JMX; 42 import javax.management.MBeanServer; 43 import javax.management.MBeanServerFactory; 44 import javax.management.Notification; 45 import javax.management.NotificationListener; 46 import javax.management.ObjectName; 47 import javax.management.relation.RelationServiceMBean; 48 import javax.management.relation.Role; 49 import javax.management.relation.RoleInfo; 50 import javax.management.relation.RoleList; 51 52 public class RelationNotificationSeqNoTest { 53 public static void main(String[] args) throws Exception { 54 MBeanServer mbs = MBeanServerFactory.newMBeanServer(); 55 ObjectName relSvcName = new ObjectName("a:type=relationService"); 56 RelationServiceMBean relSvc = 57 JMX.newMBeanProxy(mbs, relSvcName, RelationServiceMBean.class); 58 mbs.createMBean("javax.management.relation.RelationService", 59 relSvcName, 60 new Object[] {Boolean.TRUE}, 61 new String[] {"boolean"}); 62 63 final BlockingQueue<Notification> q = 64 new ArrayBlockingQueue<Notification>(100); 65 NotificationListener qListener = new NotificationListener() { 66 public void handleNotification(Notification notification, 67 Object handback) { 68 q.add(notification); 69 } 70 }; 71 mbs.addNotificationListener(relSvcName, qListener, null, null); 72 73 RoleInfo leftInfo = 74 new RoleInfo("left", "javax.management.timer.TimerMBean"); 75 RoleInfo rightInfo = 76 new RoleInfo("right", "javax.management.timer.Timer"); 77 relSvc.createRelationType("typeName", new RoleInfo[] {leftInfo, rightInfo}); 78 ObjectName timer1 = new ObjectName("a:type=timer,number=1"); 79 ObjectName timer2 = new ObjectName("a:type=timer,number=2"); 80 mbs.createMBean("javax.management.timer.Timer", timer1); 81 mbs.createMBean("javax.management.timer.Timer", timer2); 82 83 Role leftRole = 84 new Role("left", Arrays.asList(new ObjectName[] {timer1})); 85 Role rightRole = 86 new Role("right", Arrays.asList(new ObjectName[] {timer2})); 87 RoleList roles = 88 new RoleList(Arrays.asList(new Role[] {leftRole, rightRole})); 89 90 final int NREPEAT = 10; 91 92 for (int i = 0; i < NREPEAT; i++) { 93 relSvc.createRelation("relationName", "typeName", roles); 94 relSvc.removeRelation("relationName"); 95 } 96 97 Notification firstNotif = q.remove(); 98 long seqNo = firstNotif.getSequenceNumber(); 99 for (int i = 0; i < NREPEAT * 2 - 1; i++) { 100 Notification n = q.remove(); 101 long nSeqNo = n.getSequenceNumber(); 102 if (nSeqNo != seqNo + 1) { 103 throw new Exception( 104 "TEST FAILED: expected seqNo " + (seqNo + 1) + "; got " + 105 nSeqNo); 106 } 107 seqNo++; 108 } 109 System.out.println("TEST PASSED: got " + (NREPEAT * 2) + " notifications " + 110 "with contiguous sequence numbers"); 111 } 112 }