/*

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 *

 * This code is free software; you can redistribute it and/or modify it

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 * published by the Free Software Foundation.

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 * 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

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 * 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,

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 *

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 */

/*

 * @test

 * @bug 6701459

 * @summary Test sequence numbers in RelationService notifications.

 * @author Eamonn McManus

 */

/*

 * Bug 6701459 is for a synchronization problem that is very unlikely to occur

 * in practice and it would be very hard to test it.  Instead we just check that

 * the fix has not introduced any obviously-wrong behavior in the sequence

 * numbers.

 */

import java.util.Arrays;

import java.util.concurrent.ArrayBlockingQueue;

import java.util.concurrent.BlockingQueue;

import javax.management.JMX;

import javax.management.MBeanServer;

import javax.management.MBeanServerFactory;

import javax.management.Notification;

import javax.management.NotificationListener;

import javax.management.ObjectName;

import javax.management.relation.RelationServiceMBean;

import javax.management.relation.Role;

import javax.management.relation.RoleInfo;

import javax.management.relation.RoleList;

public class RelationNotificationSeqNoTest {

    public static void main(String[] args) throws Exception {

        MBeanServer mbs = MBeanServerFactory.newMBeanServer();

        ObjectName relSvcName = new ObjectName("a:type=relationService");

        RelationServiceMBean relSvc =

                JMX.newMBeanProxy(mbs, relSvcName, RelationServiceMBean.class);

        mbs.createMBean("javax.management.relation.RelationService",

                        relSvcName,

                        new Object[] {Boolean.TRUE},

                        new String[] {"boolean"});

        final BlockingQueue<Notification> q =

                new ArrayBlockingQueue<Notification>(100);

        NotificationListener qListener = new NotificationListener() {

            public void handleNotification(Notification notification,

                                           Object handback) {

                q.add(notification);

            }

        };

        mbs.addNotificationListener(relSvcName, qListener, null, null);

        RoleInfo leftInfo =

            new RoleInfo("left", "javax.management.timer.TimerMBean");

        RoleInfo rightInfo =

            new RoleInfo("right", "javax.management.timer.Timer");

        relSvc.createRelationType("typeName", new RoleInfo[] {leftInfo, rightInfo});

        ObjectName timer1 = new ObjectName("a:type=timer,number=1");

        ObjectName timer2 = new ObjectName("a:type=timer,number=2");

        mbs.createMBean("javax.management.timer.Timer", timer1);

        mbs.createMBean("javax.management.timer.Timer", timer2);

        Role leftRole =

            new Role("left", Arrays.asList(new ObjectName[] {timer1}));

        Role rightRole =

            new Role("right", Arrays.asList(new ObjectName[] {timer2}));

        RoleList roles =

            new RoleList(Arrays.asList(new Role[] {leftRole, rightRole}));

        final int NREPEAT = 10;

        for (int i = 0; i < NREPEAT; i++) {

            relSvc.createRelation("relationName", "typeName", roles);

            relSvc.removeRelation("relationName");

        }

        Notification firstNotif = q.remove();

        long seqNo = firstNotif.getSequenceNumber();

        for (int i = 0; i < NREPEAT * 2 - 1; i++) {

            Notification n = q.remove();

            long nSeqNo = n.getSequenceNumber();

            if (nSeqNo != seqNo + 1) {

                throw new Exception(

                        "TEST FAILED: expected seqNo " + (seqNo + 1) + "; got " +

                        nSeqNo);

            }

            seqNo++;

        }

        System.out.println("TEST PASSED: got " + (NREPEAT * 2) + " notifications " +

                "with contiguous sequence numbers");

    }

}