@Test
public void testJoinMessageReceivedForDisconnectedHost() throws Exception {
final AtomicInteger counter1 = new AtomicInteger(0);
final AtomicInteger counter2 = new AtomicInteger(0);
connector1.subscribe(String.class.getName(), new CountingCommandHandler(counter1));
connector1.connect(20);
assertTrue(
"Expected connector 1 to connect within 10 seconds",
connector1.awaitJoined(10, TimeUnit.SECONDS));
connector2.subscribe(String.class.getName(), new CountingCommandHandler(counter2));
connector2.connect(80);
assertTrue("Connector 2 failed to connect", connector2.awaitJoined());
// wait for both connectors to have the same view
waitForConnectorSync();
ConsistentHash hashBefore = connector1.getConsistentHash();
// secretly insert an illegal message
channel1
.getReceiver()
.receive(
new Message(
channel1.getAddress(),
new IpAddress(12345),
new JoinMessage(10, Collections.<String>emptySet())));
ConsistentHash hash2After = connector1.getConsistentHash();
assertEquals("That message should not have changed the ring", hashBefore, hash2After);
}
private void waitForConnectorSync() throws InterruptedException {
int t = 0;
while (ConsistentHash.emptyRing().equals(connector1.getConsistentHash())
|| !connector1.getConsistentHash().equals(connector2.getConsistentHash())) {
// don't have a member for String yet, which means we must wait a little longer
if (t++ > 1500) {
assertEquals(
"Connectors did not synchronize within 30 seconds.",
connector1.getConsistentHash().toString(),
connector2.getConsistentHash().toString());
}
Thread.sleep(20);
}
}
@Test(timeout = 300000)
public void testHashChangeNotification() throws Exception {
connector1.connect(10);
connector2.connect(10);
// wait for both connectors to have the same view
waitForConnectorSync();
// connector 1 joined
ConsistentHash notify1 = hashChangeListener.notifications.poll(5, TimeUnit.SECONDS);
// connector 2 joined
ConsistentHash notify2 = hashChangeListener.notifications.poll(5, TimeUnit.SECONDS);
// Self and other node have joined
assertEquals(connector1.getConsistentHash(), notify2);
channel2.close();
// Other node has left
ConsistentHash notify3 = hashChangeListener.notifications.poll(5, TimeUnit.SECONDS);
assertEquals(connector1.getConsistentHash(), notify3);
}
@Test(timeout = 30000)
public void testRingsProperlySynchronized_ChannelAlreadyConnected() throws Exception {
final AtomicInteger counter1 = new AtomicInteger(0);
final AtomicInteger counter2 = new AtomicInteger(0);
connector1.subscribe(String.class.getName(), new CountingCommandHandler(counter1));
channel1.connect(clusterName);
connector1.connect(20);
assertTrue(
"Expected connector 1 to connect within 10 seconds",
connector1.awaitJoined(10, TimeUnit.SECONDS));
connector2.subscribe(Long.class.getName(), new CountingCommandHandler(counter2));
channel2.connect(clusterName);
connector2.connect(80);
assertTrue("Connector 2 failed to connect", connector2.awaitJoined());
waitForConnectorSync();
FutureCallback<Object, Object> callback1 = new FutureCallback<>();
connector1.send("1", new GenericCommandMessage<>("Hello"), callback1);
FutureCallback<Object, Object> callback2 = new FutureCallback<>();
connector1.send("1", new GenericCommandMessage<>(1L), callback2);
FutureCallback<Object, Object> callback3 = new FutureCallback<>();
connector2.send("1", new GenericCommandMessage<>("Hello"), callback3);
FutureCallback<Object, Object> callback4 = new FutureCallback<>();
connector2.send("1", new GenericCommandMessage<>(1L), callback4);
assertEquals("The Reply!", callback1.get());
assertEquals("The Reply!", callback2.get());
assertEquals("The Reply!", callback3.get());
assertEquals("The Reply!", callback4.get());
assertTrue(connector1.getConsistentHash().equals(connector2.getConsistentHash()));
}