@Test
public void useTransactionTest() throws Exception {
// Performing admin operations to create dataset instance
// keyValueTable is a system dataset module
Id.DatasetInstance myTableInstance = Id.DatasetInstance.from(namespace, "myTable");
dsFramework.addInstance("keyValueTable", myTableInstance, DatasetProperties.EMPTY);
Assert.assertTrue(feedManager.createFeed(FEED1));
try {
Cancellable cancellable =
notificationService.subscribe(
FEED1,
new NotificationHandler<String>() {
private int received = 0;
@Override
public Type getNotificationType() {
return String.class;
}
@Override
public void received(
final String notification, NotificationContext notificationContext) {
notificationContext.execute(
new TxRunnable() {
@Override
public void run(DatasetContext context) throws Exception {
KeyValueTable table = context.getDataset("myTable");
table.write("foo", String.format("%s-%d", notification, received++));
}
},
TxRetryPolicy.maxRetries(5));
}
});
TimeUnit.SECONDS.sleep(2);
try {
notificationService.publish(FEED1, "foobar");
// Waiting for the subscriber to receive that notification
TimeUnit.SECONDS.sleep(2);
KeyValueTable table =
dsFramework.getDataset(myTableInstance, DatasetDefinition.NO_ARGUMENTS, null);
Assert.assertNotNull(table);
Transaction tx1 = txManager.startShort(100);
table.startTx(tx1);
Assert.assertEquals("foobar-0", Bytes.toString(table.read("foo")));
Assert.assertTrue(table.commitTx());
txManager.canCommit(tx1, table.getTxChanges());
txManager.commit(tx1);
table.postTxCommit();
} finally {
cancellable.cancel();
}
} finally {
dsFramework.deleteInstance(myTableInstance);
feedManager.deleteFeed(FEED1);
}
}
@Test
public void twoFeedsPublishOneFeedSubscribeTest() throws Exception {
// Test two publishers on two different feeds, but only one subscriber subscribing to one of the
// feeds
final int messagesCount = 15;
Assert.assertTrue(feedManager.createFeed(FEED1));
Assert.assertTrue(feedManager.createFeed(FEED2));
try {
// Create a subscribing process
final AtomicInteger receiveCount = new AtomicInteger(0);
final AtomicBoolean assertionOk = new AtomicBoolean(true);
Cancellable cancellable =
notificationService.subscribe(
FEED1,
new NotificationHandler<String>() {
@Override
public Type getNotificationType() {
return String.class;
}
@Override
public void received(String notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals("fake-payload-" + receiveCount.get(), notification);
receiveCount.incrementAndGet();
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
});
// Give the subscriber some time to prepare for published messages before starting the
// publisher
TimeUnit.MILLISECONDS.sleep(500);
Runnable publisherRunnable1 =
new Runnable() {
@Override
public void run() {
try {
Random r = new Random();
for (int j = 0; j < messagesCount; j++) {
notificationService.publish(FEED1, String.format("fake-payload-%d", j));
TimeUnit.MILLISECONDS.sleep(r.nextInt(200));
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread1 = new Thread(publisherRunnable1);
publisherThread1.start();
Runnable publisherRunnable2 =
new Runnable() {
@Override
public void run() {
try {
Random r = new Random();
for (int j = 0; j < messagesCount; j++) {
notificationService.publish(FEED2, String.format("fake-payload2-%d", j));
TimeUnit.MILLISECONDS.sleep(r.nextInt(200));
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread2 = new Thread(publisherRunnable2);
publisherThread2.start();
publisherThread1.join();
publisherThread2.join();
TimeUnit.MILLISECONDS.sleep(2000);
cancellable.cancel();
Assert.assertTrue(assertionOk.get());
Assert.assertEquals(messagesCount, receiveCount.get());
} finally {
feedManager.deleteFeed(FEED1);
feedManager.deleteFeed(FEED2);
}
}
@Test
public void multipleFeedsOneSubscriber() throws Exception {
// One subscriber subscribes to two feeds
final int messagesCount = 15;
Assert.assertTrue(feedManager.createFeed(FEED1));
Assert.assertTrue(feedManager.createFeed(FEED2));
try {
// Create a subscribing process
final AtomicBoolean assertionOk = new AtomicBoolean(true);
final int[] receiveCounts = new int[2];
List<Cancellable> cancellables = Lists.newArrayList();
cancellables.add(
notificationService.subscribe(
FEED1,
new NotificationHandler<SimpleNotification>() {
@Override
public Type getNotificationType() {
return SimpleNotification.class;
}
@Override
public void received(
SimpleNotification notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals(
"fake-payload-" + receiveCounts[0], notification.getPayload());
receiveCounts[0]++;
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
}));
cancellables.add(
notificationService.subscribe(
FEED2,
new NotificationHandler<String>() {
@Override
public Type getNotificationType() {
return String.class;
}
@Override
public void received(String notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals("fake-payload-" + receiveCounts[1], notification);
receiveCounts[1]++;
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
}));
// Give the subscriber some time to prepare for published messages before starting the
// publisher
TimeUnit.MILLISECONDS.sleep(500);
Runnable publisherRunnable1 =
new Runnable() {
@Override
public void run() {
try {
Random r = new Random();
for (int j = 0; j < messagesCount; j++) {
notificationService.publish(
FEED1, new SimpleNotification(0, String.format("fake-payload-%d", j)));
TimeUnit.MILLISECONDS.sleep(r.nextInt(200));
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread1 = new Thread(publisherRunnable1);
publisherThread1.start();
Runnable publisherRunnable2 =
new Runnable() {
@Override
public void run() {
try {
Random r = new Random();
for (int j = 0; j < messagesCount; j++) {
notificationService.publish(FEED2, String.format("fake-payload-%d", j));
TimeUnit.MILLISECONDS.sleep(r.nextInt(200));
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread2 = new Thread(publisherRunnable2);
publisherThread2.start();
publisherThread1.join();
publisherThread2.join();
TimeUnit.MILLISECONDS.sleep(2000);
for (Cancellable cancellable : cancellables) {
cancellable.cancel();
}
Assert.assertTrue(assertionOk.get());
for (int i : receiveCounts) {
Assert.assertEquals(messagesCount, i);
}
} finally {
feedManager.deleteFeed(FEED1);
feedManager.deleteFeed(FEED2);
}
}
@Test
public void multiplePublishersOneSubscriberTest() throws Exception {
/*
This configuration should not happen, as, by design, we want only one publisher to publisher the changes attached
to a resource. But since the low level APIs allow it, this should still be tested.
*/
final int messagesCount = 15;
int publishersCount = 5;
Assert.assertTrue(feedManager.createFeed(FEED1));
try {
// Create a subscribing process
final AtomicBoolean assertionOk = new AtomicBoolean(true);
final int[] receiveCounts = new int[publishersCount];
Cancellable cancellable =
notificationService.subscribe(
FEED1,
new NotificationHandler<SimpleNotification>() {
@Override
public Type getNotificationType() {
return SimpleNotification.class;
}
@Override
public void received(
SimpleNotification notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals(
"fake-payload-" + receiveCounts[notification.getPublisherId()],
notification.getPayload());
receiveCounts[notification.getPublisherId()]++;
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
});
// Give the subscriber some time to prepare for published messages before starting the
// publisher
TimeUnit.MILLISECONDS.sleep(500);
List<Thread> publisherThreads = Lists.newArrayList();
for (int i = 0; i < publishersCount; i++) {
final int k = i;
Runnable publisherRunnable =
new Runnable() {
@Override
public void run() {
try {
Random r = new Random();
for (int j = 0; j < messagesCount; j++) {
notificationService.publish(
FEED1, new SimpleNotification(k, String.format("fake-payload-%d", j)));
TimeUnit.MILLISECONDS.sleep(r.nextInt(200));
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread = new Thread(publisherRunnable);
publisherThread.start();
publisherThreads.add(publisherThread);
}
for (Thread t : publisherThreads) {
t.join();
}
TimeUnit.MILLISECONDS.sleep(2000);
cancellable.cancel();
Assert.assertTrue(assertionOk.get());
for (int i : receiveCounts) {
Assert.assertEquals(messagesCount, i);
}
} finally {
feedManager.deleteFeed(FEED1);
}
}
@Test
public void onePublisherMultipleSubscribersTest() throws Exception {
final int messagesCount = 20;
int subscribersCount = 10;
Assert.assertTrue(feedManager.createFeed(FEED1));
try {
Runnable publisherRunnable =
new Runnable() {
@Override
public void run() {
try {
for (int i = 0; i < messagesCount; i++) {
notificationService.publish(FEED1, String.format("fake-payload-%d", i));
TimeUnit.MILLISECONDS.sleep(100);
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread = new Thread(publisherRunnable);
final int[] receiveCounts = new int[subscribersCount];
final AtomicBoolean assertionOk = new AtomicBoolean(true);
List<Cancellable> cancellables = Lists.newArrayList();
for (int i = 0; i < subscribersCount; i++) {
final int j = i;
Cancellable cancellable =
notificationService.subscribe(
FEED1,
new NotificationHandler<String>() {
@Override
public Type getNotificationType() {
return String.class;
}
@Override
public void received(
String notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals("fake-payload-" + receiveCounts[j], notification);
receiveCounts[j]++;
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
});
cancellables.add(cancellable);
}
// Give the subscriber some time to prepare for published messages before starting the
// publisher
TimeUnit.MILLISECONDS.sleep(500);
publisherThread.start();
publisherThread.join();
TimeUnit.MILLISECONDS.sleep(2000);
for (Cancellable cancellable : cancellables) {
cancellable.cancel();
}
Assert.assertTrue(assertionOk.get());
for (int i : receiveCounts) {
Assert.assertEquals(messagesCount, i);
}
} finally {
feedManager.deleteFeed(FEED1);
}
}
@Test
public void onePublisherOneSubscriberTest() throws Exception {
final int messagesCount = 20;
Assert.assertTrue(feedManager.createFeed(FEED1));
try {
// Create a subscribing process
final AtomicInteger receiveCount = new AtomicInteger(0);
final AtomicBoolean assertionOk = new AtomicBoolean(true);
Cancellable cancellable =
notificationService.subscribe(
FEED1,
new NotificationHandler<String>() {
@Override
public Type getNotificationType() {
return String.class;
}
@Override
public void received(String notification, NotificationContext notificationContext) {
LOG.debug("Received notification payload: {}", notification);
try {
Assert.assertEquals("fake-payload-" + receiveCount.get(), notification);
receiveCount.incrementAndGet();
} catch (Throwable t) {
assertionOk.set(false);
Throwables.propagate(t);
}
}
});
// Runnable to publish notifications on behalf of the publisher entity
Runnable publisherRunnable =
new Runnable() {
@Override
public void run() {
try {
for (int i = 0; i < messagesCount; i++) {
notificationService.publish(FEED1, String.format("fake-payload-%d", i));
TimeUnit.MILLISECONDS.sleep(100);
}
} catch (Throwable e) {
Throwables.propagate(e);
}
}
};
Thread publisherThread = new Thread(publisherRunnable);
// Give the subscriber some time to prepare for published messages before starting the
// publisher
TimeUnit.MILLISECONDS.sleep(500);
publisherThread.start();
publisherThread.join();
TimeUnit.MILLISECONDS.sleep(2000);
cancellable.cancel();
Assert.assertTrue(assertionOk.get());
Assert.assertEquals(messagesCount, receiveCount.get());
} finally {
feedManager.deleteFeed(FEED1);
try {
feedManager.getFeed(FEED1);
Assert.fail("Should throw NotificationFeedNotFoundException.");
} catch (NotificationFeedNotFoundException e) {
// Expected
}
}
}