@Test
public void testUnsubscribeRemovesAllSubscriptionsForThatEntity() throws Exception {
policy.subscribe(entity, TestEntity.SEQUENCE, listener);
policy.subscribe(entity, TestEntity.NAME, listener);
policy.subscribe(entity, TestEntity.MY_NOTIF, listener);
policy.subscribe(otherEntity, TestEntity.SEQUENCE, listener);
policy.unsubscribe(entity);
entity.setAttribute(TestEntity.SEQUENCE, 123);
entity.setAttribute(TestEntity.NAME, "myname");
entity.emit(TestEntity.MY_NOTIF, 456);
otherEntity.setAttribute(TestEntity.SEQUENCE, 789);
Thread.sleep(SHORT_WAIT_MS);
Asserts.succeedsEventually(
new Runnable() {
@Override
public void run() {
assertEquals(
listener.events,
ImmutableList.of(
new BasicSensorEvent<Integer>(TestEntity.SEQUENCE, otherEntity, 789)));
}
});
}
@Test
public void testServiceReplacerWorksAfterRebind() throws Exception {
Location origLoc =
origManagementContext
.getLocationManager()
.createLocation(LocationSpec.create(SimulatedLocation.class));
DynamicCluster origCluster =
origApp.createAndManageChild(
EntitySpec.create(DynamicCluster.class)
.configure(DynamicCluster.MEMBER_SPEC, EntitySpec.create(TestEntity.class))
.configure(DynamicCluster.INITIAL_SIZE, 3));
origApp.start(ImmutableList.<Location>of(origLoc));
origCluster.addPolicy(
PolicySpec.create(ServiceReplacer.class)
.configure(ServiceReplacer.FAILURE_SENSOR_TO_MONITOR, HASensors.ENTITY_FAILED));
// rebind
TestApplication newApp = rebind();
final DynamicCluster newCluster =
(DynamicCluster)
Iterables.find(newApp.getChildren(), Predicates.instanceOf(DynamicCluster.class));
// stimulate the policy
final Set<Entity> initialMembers = ImmutableSet.copyOf(newCluster.getMembers());
final TestEntity e1 = (TestEntity) Iterables.get(initialMembers, 1);
newApp
.getManagementContext()
.getSubscriptionManager()
.subscribe(e1, HASensors.ENTITY_FAILED, eventListener);
newApp
.getManagementContext()
.getSubscriptionManager()
.subscribe(e1, HASensors.ENTITY_RECOVERED, eventListener);
e1.emit(HASensors.ENTITY_FAILED, new FailureDescriptor(e1, "simulate failure"));
// Expect e1 to be replaced
Asserts.succeedsEventually(
new Runnable() {
@Override
public void run() {
Set<Entity> newMembers =
Sets.difference(ImmutableSet.copyOf(newCluster.getMembers()), initialMembers);
Set<Entity> removedMembers =
Sets.difference(initialMembers, ImmutableSet.copyOf(newCluster.getMembers()));
assertEquals(removedMembers, ImmutableSet.of(e1));
assertEquals(newMembers.size(), 1);
assertEquals(
((TestEntity) Iterables.getOnlyElement(newMembers)).getCallHistory(),
ImmutableList.of("start"));
// TODO e1 not reporting "start" after rebind because callHistory is a field rather than
// an attribute, so was not persisted
Asserts.assertEqualsIgnoringOrder(e1.getCallHistory(), ImmutableList.of("stop"));
assertFalse(Entities.isManaged(e1));
}
});
}
@Test
public void testServiceRestarterWorksAfterRebind() throws Exception {
origEntity.addPolicy(
PolicySpec.create(ServiceRestarter.class)
.configure(ServiceRestarter.FAILURE_SENSOR_TO_MONITOR, HASensors.ENTITY_FAILED));
TestApplication newApp = rebind();
final TestEntity newEntity =
(TestEntity) Iterables.find(newApp.getChildren(), Predicates.instanceOf(TestEntity.class));
newEntity.emit(HASensors.ENTITY_FAILED, new FailureDescriptor(origEntity, "simulate failure"));
Asserts.succeedsEventually(
new Runnable() {
@Override
public void run() {
assertEquals(newEntity.getCallHistory(), ImmutableList.of("restart"));
}
});
}
@Test
public void testSubscriptionReceivesEvents() throws Exception {
policy.subscribe(entity, TestEntity.SEQUENCE, listener);
policy.subscribe(entity, TestEntity.NAME, listener);
policy.subscribe(entity, TestEntity.MY_NOTIF, listener);
otherEntity.setAttribute(TestEntity.SEQUENCE, 456);
entity.setAttribute(TestEntity.SEQUENCE, 123);
entity.setAttribute(TestEntity.NAME, "myname");
entity.emit(TestEntity.MY_NOTIF, 789);
Asserts.succeedsEventually(
new Runnable() {
@Override
public void run() {
assertEquals(
listener.events,
ImmutableList.of(
new BasicSensorEvent<Integer>(TestEntity.SEQUENCE, entity, 123),
new BasicSensorEvent<String>(TestEntity.NAME, entity, "myname"),
new BasicSensorEvent<Integer>(TestEntity.MY_NOTIF, entity, 789)));
}
});
}