Examples with Decider com.uber.cadence.internal.replay.Decider used on opensource projects

Example 1 with Decider

use of com.uber.cadence.internal.replay.Decider in project cadence-client by uber-java.

the class DeterministicRunnerTest method workflowThreadsWillEvictCacheWhenMaxThreadCountIsHit.

@Test
public void workflowThreadsWillEvictCacheWhenMaxThreadCountIsHit() throws Throwable {
    // Arrange
    // Arrange
    Map<String, String> tags = new ImmutableMap.Builder<String, String>(2).put(MetricsTag.DOMAIN, "domain").put(MetricsTag.TASK_LIST, "stickyTaskList").build();
    StatsReporter reporter = mock(StatsReporter.class);
    Scope scope = new RootScopeBuilder().reporter(reporter).reportEvery(com.uber.m3.util.Duration.ofMillis(300)).tagged(tags);
    ThreadPoolExecutor threadPool = new ThreadPoolExecutor(1, 3, 1, TimeUnit.SECONDS, new SynchronousQueue<>());
    AtomicReference<String> status = new AtomicReference<>();
    DeciderCache cache = new DeciderCache(3, scope);
    DecisionContext decisionContext = mock(DecisionContext.class);
    when(decisionContext.getMetricsScope()).thenReturn(scope);
    when(decisionContext.getDomain()).thenReturn("domain");
    when(decisionContext.getWorkflowType()).thenReturn(new WorkflowType());
    DeterministicRunnerImpl d = new DeterministicRunnerImpl(threadPool, new SyncDecisionContext(decisionContext, JsonDataConverter.getInstance(), null, next -> next, null), // clock override
    () -> 0L, () -> {
        Promise<Void> thread = Async.procedure(() -> {
            status.set("started");
            WorkflowThread.await("doing something", () -> false);
            status.set("done");
        });
        thread.get();
    }, cache);
    Decider decider = new DetermisiticRunnerContainerDecider(d);
    PollForDecisionTaskResponse response = HistoryUtils.generateDecisionTaskWithInitialHistory();
    cache.getOrCreate(response, () -> decider);
    cache.addToCache(response, decider);
    d.runUntilAllBlocked();
    assertEquals(2, threadPool.getActiveCount());
    DeterministicRunnerImpl d2 = new DeterministicRunnerImpl(threadPool, new SyncDecisionContext(decisionContext, JsonDataConverter.getInstance(), null, next -> next, null), // clock override
    () -> 0L, () -> {
        Promise<Void> thread = Async.procedure(() -> {
            status.set("started");
            WorkflowThread.await("doing something else", () -> false);
            status.set("done");
        });
        thread.get();
    }, cache);
    // Root thread added for d2 therefore we expect a total of 3 threads used
    assertEquals(3, threadPool.getActiveCount());
    assertEquals(1, cache.size());
    // Act: This should kick out threads consumed by 'd'
    d2.runUntilAllBlocked();
    // Assert: Cache is evicted and only threads consumed by d2 remain.
    assertEquals(2, threadPool.getActiveCount());
    // cache was evicted
    assertEquals(0, cache.size());
    // Wait for reporter
    Thread.sleep(600);
    verify(reporter, atLeastOnce()).reportCounter(eq(MetricsType.STICKY_CACHE_THREAD_FORCED_EVICTION), eq(tags), anyInt());
}

Example 2 with Decider

use of com.uber.cadence.internal.replay.Decider in project cadence-client by uber-java.

the class DeterministicRunnerTest method workflowThreadsWillNotEvictCacheWhenMaxThreadCountIsHit.

@Test
public void workflowThreadsWillNotEvictCacheWhenMaxThreadCountIsHit() throws Throwable {
    // Arrange
    ThreadPoolExecutor threadPool = new ThreadPoolExecutor(1, 5, 1, TimeUnit.SECONDS, new SynchronousQueue<>());
    AtomicReference<String> status = new AtomicReference<>();
    DeciderCache cache = new DeciderCache(3, NoopScope.getInstance());
    DeterministicRunnerImpl d = new DeterministicRunnerImpl(threadPool, null, // clock override
    () -> 0L, () -> {
        Promise<Void> thread = Async.procedure(() -> {
            status.set("started");
            WorkflowThread.await("doing something", () -> false);
            status.set("done");
        });
        thread.get();
    }, cache);
    Decider decider = new DetermisiticRunnerContainerDecider(d);
    PollForDecisionTaskResponse response = HistoryUtils.generateDecisionTaskWithInitialHistory();
    cache.getOrCreate(response, () -> decider);
    cache.addToCache(response, decider);
    d.runUntilAllBlocked();
    assertEquals(2, threadPool.getActiveCount());
    DeterministicRunnerImpl d2 = new DeterministicRunnerImpl(threadPool, null, // clock override
    () -> 0L, () -> {
        Promise<Void> thread = Async.procedure(() -> {
            status.set("started");
            WorkflowThread.await("doing something else", () -> false);
            status.set("done");
        });
        thread.get();
    }, cache);
    // Root thread added for d2 therefore we expect a total of 3 threads used
    assertEquals(3, threadPool.getActiveCount());
    assertEquals(1, cache.size());
    // Act: This should not kick out threads consumed by 'd' since there's enough capacity
    d2.runUntilAllBlocked();
    // Assert: Cache is not evicted and all threads remain.
    assertEquals(4, threadPool.getActiveCount());
    assertEquals(1, cache.size());
}