/** Sends a bit more messages trying to uncover concurrency issues. */
@Test
public void heavierTest() throws ExecutionException, InterruptedException {
Stage stage1 = createStage();
Stage stage2 = createStage();
StatelessThing actor1 = Actor.getReference(StatelessThing.class, "1000");
StatelessThing actor2 = Actor.getReference(StatelessThing.class, "1000");
final Set<UUID> set = new HashSet<>();
set.clear();
List<Future<UUID>> futures = new ArrayList<>();
for (int i = 0; i < 50; i++) {
// this will force the creation of concurrent activations in each node
stage1.bind();
futures.add(actor1.getUniqueActivationId());
stage2.bind();
futures.add(actor2.getUniqueActivationId());
}
futures.forEach(
f -> {
try {
set.add(f.get(10, TimeUnit.SECONDS));
} catch (Exception e) {
throw new UncheckedException(e);
}
});
// it is very likely that there will be more than one activation per stage host.
assertTrue(set.size() > 1);
// only 25*5 calls => there should not be more than 125 activations
assertTrue(set.size() <= 100);
}
@Test
public void simpleStatelessTestConcurrentTwoStages()
throws ExecutionException, InterruptedException, TimeoutException {
final Stage stage1 = createStage();
StatelessThing actor1 = Actor.getReference(StatelessThing.class, "1000");
final Stage stage2 = createStage();
StatelessThing actor2 = Actor.getReference(StatelessThing.class, "1000");
assertNotNull(actor1.sayHello().join());
List<Task<String>> futures = new ArrayList<>();
for (int i = 0; i < 10; i++) {
stage1.bind();
futures.add(actor1.sayHello());
stage2.bind();
futures.add(actor2.sayHello());
}
Task.allOf(futures).get(30, TimeUnit.SECONDS);
}
@Test
public void simpleStatelessThreeStages()
throws ExecutionException, InterruptedException, TimeoutException {
final Stage stage1 = createStage();
StatelessThing actor = Actor.getReference(StatelessThing.class, "1000");
stage1.bind();
assertNotNull(actor.sayHello().get(10, TimeUnit.SECONDS));
final Stage stage2 = createStage();
stage2.bind();
assertNotNull(actor.sayHello().get(10, TimeUnit.SECONDS));
final Stage stage3 = createStage();
stage1.stop().join();
stage2.stop().join();
stage3.bind();
assertNotNull(actor.sayHello().get(10, TimeUnit.SECONDS));
Thread.sleep(500);
stage3.stop().join();
dumpMessages();
}
@Test
public void statelessTest() throws ExecutionException, InterruptedException {
Stage stage1 = createStage();
Stage stage2 = createStage();
Stage stage3 = createStage();
Stage stage4 = createStage();
Stage client = createClient();
StatelessThing actor1 = Actor.getReference(StatelessThing.class, "1000");
StatelessThing actor2 = Actor.getReference(StatelessThing.class, "1000");
StatelessThing actor3 = Actor.getReference(StatelessThing.class, "1000");
StatelessThing actor4 = Actor.getReference(StatelessThing.class, "1000");
StatelessThing actor5 = Actor.getReference(StatelessThing.class, "1000");
final Set<UUID> set = new HashSet<>();
Supplier stagesIdle = () -> Stream.of(stage1, stage2, stage3, stage4).allMatch(s -> isIdle(s));
for (int i = 0; i < 25; i++) {
// there will be no concurrent executions here
// each node will have at most one activation of the stateless worker
stage1.bind();
waitFor(stagesIdle);
set.add(actor1.getUniqueActivationId().join());
stage2.bind();
waitFor(stagesIdle);
set.add(actor2.getUniqueActivationId().join());
stage3.bind();
waitFor(stagesIdle);
set.add(actor3.getUniqueActivationId().join());
stage4.bind();
waitFor(stagesIdle);
set.add(actor4.getUniqueActivationId().join());
client.bind();
waitFor(stagesIdle);
set.add(actor5.getUniqueActivationId().join());
}
// Statistics might let us down from time to time here...
// Also it might just happen that between the server sending the response and releasing the
// activation,
// the client might have enough time to send another messages causing a new activation.
// The problem here is that the fake network is too fast to test this properly
// This could be "fixed" with some sleeps.
// We are using " awaitFor(stagesIdle)" to ensure no stages are processing any messages,
// but it's not bullet proof yet.
// ideally I'd like to test for this:
// assertEquals(4, set.size());
// however since awaitFor(stagesIdle) is not a sure thing, I must be content with:
final int size1 = set.size();
assertTrue("Expecting <=" + 16 + " but was: " + size1, size1 <= 16);
// TODO: find a way to know for sure, from the outside, that the stage is free to execute a new
// call.
set.clear();
List<Future<UUID>> futures = new ArrayList<>();
for (int i = 0; i < 50; i++) {
// this will force the creation of concurrent activations in each node
stage1.bind();
futures.add(actor1.getUniqueActivationId(5000));
stage2.bind();
futures.add(actor2.getUniqueActivationId(5000));
stage3.bind();
futures.add(actor3.getUniqueActivationId(5000));
stage4.bind();
futures.add(actor4.getUniqueActivationId(5000));
client.bind();
futures.add(actor5.getUniqueActivationId(5000));
}
futures.forEach(
f -> {
try {
set.add(f.get(10, TimeUnit.SECONDS));
} catch (Exception e) {
throw new UncheckedException(e);
}
});
// it is very likely that there will be more than one activation per stage host.
final int size = set.size();
assertTrue("Expecting >4 but was: " + size, size > 4);
// only 25*5 calls => there should not be more than 125 activations
assertTrue("Expecting <=" + (50 * 5) + " but was: " + size, size <= 50 * 5);
}