makeFilter(allListenerId, wildcardName, null);
NotificationFilterSupport regFilter = new NotificationFilterSupport();
regFilter.enableType(notifType);
// Get initial sequence number
NotificationResult nr =
nb.fetchNotifications(allListenerFilter, 0, 0L, 0);
int nnotifs = nr.getTargetedNotifications().length;
if (nnotifs > 0) {
System.out.println("Expected 0 notifs for initial fetch, " +
"got " + nnotifs);
return false;
}
System.out.println("Got 0 notifs for initial fetch, OK");
long earliest = nr.getEarliestSequenceNumber();
long next = nr.getNextSequenceNumber();
if (earliest != next) {
System.out.println("Expected earliest==next in initial fetch, " +
"earliest=" + earliest + "; next=" + next);
return false;
}
System.out.println("Got earliest==next in initial fetch, OK");
mbs.createMBean(MLet.class.getName(), null);
mbs.createMBean(NotificationSender.class.getName(), senderName);
NotificationSenderMBean sender = (NotificationSenderMBean)
MBeanServerInvocationHandler.newProxyInstance(mbs,
senderName,
NotificationSenderMBean.class,
false);
/* We test here that MBeans already present when the
NotificationBuffer was created get a listener for the
buffer, as do MBeans created later. The
MBeanServerDelegate was already present, while the
NotificationSender was created later. */
// Check that the NotificationSender does indeed have a listener
/* Note we are dependent on the specifics of our JMX
implementation here. There is no guarantee that the MBean
creation listeners will have run to completion when
creation of the MBean returns. */
int nlisteners = sender.getListenerCount();
if (nlisteners != 1) {
System.out.println("Notification sender should have 1 listener, " +
"has " + nlisteners);
return false;
}
System.out.println("Notification sender has 1 listener, OK");
// Now we should see two creation notifications
nr = nb.fetchNotifications(allListenerFilter, next, 0L,
Integer.MAX_VALUE);
TargetedNotification[] tns = nr.getTargetedNotifications();
if (tns.length != 2) {
System.out.println("Expected 2 notifs, got: " +
Arrays.asList(tns));
return false;
}
if (!(tns[0].getNotification() instanceof MBeanServerNotification)
|| !(tns[1].getNotification() instanceof MBeanServerNotification))
{
System.out.println("Expected 2 MBeanServerNotifications, got: " +
Arrays.asList(tns));
return false;
}
if (!tns[0].getListenerID().equals(tns[1].getListenerID())
|| !tns[0].getListenerID().equals(allListenerId)) {
System.out.println("Bad listener IDs: " + Arrays.asList(tns));
return false;
}
System.out.println("Got 2 different MBeanServerNotifications, OK");
// If we ask for max 1 notifs, we should only get one
nr = nb.fetchNotifications(allListenerFilter, next, 0L, 1);
tns = nr.getTargetedNotifications();
if (tns.length != 1) {
System.out.println("Expected 1 notif, got: " + Arrays.asList(tns));
return false;
}
TargetedNotification tn1 = tns[0];
System.out.println("Got 1 notif when asked for 1, OK");
// Now we should get the other one
nr = nb.fetchNotifications(allListenerFilter, nr.getNextSequenceNumber(),
0L, 1);
tns = nr.getTargetedNotifications();
if (tns.length != 1) {
System.out.println("Expected 1 notif, got: " + Arrays.asList(tns));
return false;
}
TargetedNotification tn2 = tns[0];
System.out.println("Got 1 notif when asked for 1 again, OK");
if (tn1.getNotification() == tn2.getNotification()) {
System.out.println("Returned same notif twice: " + tn1);
return false;
}
System.out.println("2 creation notifs are different, OK");
// Now we should get none (timeout is 0)
long oldNext = nr.getNextSequenceNumber();
nr = nb.fetchNotifications(allListenerFilter, oldNext, 0L,
Integer.MAX_VALUE);
tns = nr.getTargetedNotifications();
if (tns.length != 0) {
System.out.println("Expected 0 notifs, got: " +
Arrays.asList(tns));
return false;
}
System.out.println("Got 0 notifs with 0 timeout, OK");
if (nr.getNextSequenceNumber() != oldNext) {
System.out.println("Sequence number changed: " + oldNext + " -> " +
nr.getNextSequenceNumber());
return false;
}
System.out.println("Next seqno unchanged with 0 timeout, OK");
// Check that timeouts work
long startTime = System.currentTimeMillis();
nr = nb.fetchNotifications(allListenerFilter, oldNext, 250L,
Integer.MAX_VALUE);
tns = nr.getTargetedNotifications();
if (tns.length != 0) {
System.out.println("Expected 0 notifs, got: " +
Arrays.asList(tns));
return false;
}
long endTime = System.currentTimeMillis();
long elapsed = endTime - startTime;
if (elapsed < 250L) {
System.out.println("Elapsed time shorter than timeout: " +
elapsed);
return false;
}
System.out.println("Timeout worked, OK");
// Check that notification filtering works
NotificationFilter senderFilter = new NotificationFilter() {
public boolean isNotificationEnabled(Notification n) {
if (!(n instanceof MBeanServerNotification))
return false;
MBeanServerNotification mbsn = (MBeanServerNotification) n;
return (mbsn.getMBeanName().equals(senderName));
}
};
Integer senderListenerId = new Integer(88);
NotificationBufferFilter senderListenerFilter =
makeFilter(senderListenerId, wildcardName, senderFilter);
nr = nb.fetchNotifications(senderListenerFilter, 0, 1000L,
Integer.MAX_VALUE);
tns = nr.getTargetedNotifications();
if (tns.length != 1) {
System.out.println("Expected 1 notif, got: " + Arrays.asList(tns));
return false;
}
MBeanServerNotification mbsn =
(MBeanServerNotification) tns[0].getNotification();
if (!mbsn.getMBeanName().equals(senderName)) {
System.out.println("Expected notif with senderName, got: " +
mbsn + " (" + mbsn.getMBeanName() + ")");
return false;
}
System.out.println("Successfully applied NotificationFilter, OK");
// Now send 8 notifs to fill up our 10-element buffer
sender.sendNotifs("tiddly.pom", 8);
nr = nb.fetchNotifications(allListenerFilter, 0, 1000L,
Integer.MAX_VALUE);
tns = nr.getTargetedNotifications();
if (tns.length != 10) {
System.out.println("Expected 10 notifs, got: " +
Arrays.asList(tns));
return false;
}
System.out.println("Got full buffer of 10 notifications, OK");
// Check that the 10 notifs are the ones we expected
for (int i = 0; i < 10; i++) {
String expected =
(i < 2) ? notifType : "tiddly.pom";
String found = tns[i].getNotification().getType();
if (!found.equals(expected)) {
System.out.println("Notif " + i + " bad type: expected <" +
expected + ">, found <" + found + ">");
return false;
}
}
System.out.println("Notifs have right types, OK");
// Check that ObjectName filtering works
NotificationBufferFilter senderNameFilter =
makeFilter(new Integer(66), senderName, null);
nr = nb.fetchNotifications(senderNameFilter, 0, 0L,
Integer.MAX_VALUE);
tns = nr.getTargetedNotifications();
if (tns.length != 8) {
System.out.println("Bad result from ObjectName filtering: " +
Arrays.asList(tns));
return false;
}
System.out.println("ObjectName filtering works, OK");
// Send one more notif, which should cause the oldest one to drop
sender.sendNotifs("foo.bar", 1);
nr = nb.fetchNotifications(allListenerFilter, 0, 1000L,
Integer.MAX_VALUE);
if (nr.getEarliestSequenceNumber() <= earliest) {
System.out.println("Expected earliest to increase: " +
nr.getEarliestSequenceNumber() + " should be > "
+ earliest);
return false;
}
System.out.println("Earliest notif dropped, OK");
// Check that the 10 notifs are the ones we expected
tns = nr.getTargetedNotifications();
for (int i = 0; i < 10; i++) {
String expected =
(i < 1) ? notifType
: (i < 9) ? "tiddly.pom" : "foo.bar";
String found = tns[i].getNotification().getType();
if (!found.equals(expected)) {
System.out.println("Notif " + i + " bad type: expected <" +
expected + ">, found <" + found + ">");
return false;
}
}
System.out.println("Notifs have right types, OK");
// Apply a filter that only selects the first notif, with max notifs 1,
// then check that it skipped past the others even though it already
// had its 1 notif
NotificationBufferFilter firstFilter =
makeFilter(new Integer(55), wildcardName, regFilter);
nr = nb.fetchNotifications(firstFilter, 0, 1000L, 1);
tns = nr.getTargetedNotifications();
if (tns.length != 1
|| !tns[0].getNotification().getType().equals(notifType)) {
System.out.println("Unexpected return from filtered call: " +
Arrays.asList(tns));
return false;
}
nr = nb.fetchNotifications(allListenerFilter, nr.getNextSequenceNumber(),
0L, 1000);
tns = nr.getTargetedNotifications();
if (tns.length != 0) {
System.out.println("Expected 0 notifs, got: " +
Arrays.asList(tns));
return false;
}
// Create a second, larger buffer, which should share the same notifs
nr = nb.fetchNotifications(allListenerFilter, 0,
1000L, Integer.MAX_VALUE);
queuesize = new Integer(20);
env.put(com.sun.jmx.remote.util.EnvHelp.BUFFER_SIZE_PROPERTY, queuesize);
NotificationBuffer nb2 =
ArrayNotificationBuffer.getNotificationBuffer(mbs, env);
NotificationResult nr2 =
nb2.fetchNotifications(allListenerFilter, 0,
1000L, Integer.MAX_VALUE);
if (nr.getEarliestSequenceNumber() != nr2.getEarliestSequenceNumber()
|| nr.getNextSequenceNumber() != nr2.getNextSequenceNumber()
|| !sameTargetedNotifs(nr.getTargetedNotifications(),
nr2.getTargetedNotifications()))
return false;
System.out.println("Adding second buffer preserved notif list, OK");
// Check that the capacity is now 20
sender.sendNotifs("propter.hoc", 10);
nr2 = nb2.fetchNotifications(allListenerFilter, 0,
1000L, Integer.MAX_VALUE);
if (nr.getEarliestSequenceNumber() !=
nr2.getEarliestSequenceNumber()) {
System.out.println("Earliest seq number changed after notifs " +
"that should have fit");
return false;
}
TargetedNotification[] tns2 = new TargetedNotification[10];
Arrays.asList(nr2.getTargetedNotifications()).subList(0, 10).toArray(tns2);
if (!sameTargetedNotifs(nr.getTargetedNotifications(), tns2)) {
System.out.println("Early notifs changed after notifs " +
"that should have fit");
return false;
}
System.out.println("New notifications fit in now-larger buffer, OK");
// Drop the second buffer and check that the capacity shrinks
nb2.dispose();
NotificationResult nr3 =
nb.fetchNotifications(allListenerFilter, 0,
1000L, Integer.MAX_VALUE);
if (nr3.getEarliestSequenceNumber() != nr.getNextSequenceNumber()) {
System.out.println("After shrink, notifs not dropped as expected");
return false;
}
if (nr3.getNextSequenceNumber() != nr2.getNextSequenceNumber()) {
System.out.println("After shrink, next seq no does not match");
return false;
}
tns2 = new TargetedNotification[10];
Arrays.asList(nr2.getTargetedNotifications()).subList(10, 20).toArray(tns2);
if (!sameTargetedNotifs(nr3.getTargetedNotifications(), tns2)) {
System.out.println("Later notifs not preserved after shrink");
return false;
}
System.out.println("Dropping second buffer shrank capacity, OK");