Examples with SettableClock com.linkedin.util.clock.SettableClock used on opensource projects

Example 16 with SettableClock

use of com.linkedin.util.clock.SettableClock in project rest.li by linkedin.

the class TestCallTracker method setUp.

@BeforeMethod
protected void setUp() throws Exception {
    _clock = new SettableClock();
    _callTracker = new CallTrackerImpl(_interval, _clock);
}

Example 17 with SettableClock

use of com.linkedin.util.clock.SettableClock in project rest.li by linkedin.

the class TestAsyncPool method testGetStats.

@Test(retryAnalyzer = SingleRetry.class)
public void testGetStats() throws Exception {
    final int POOL_SIZE = 25;
    final int MIN_SIZE = 0;
    final int MAX_WAITER_SIZE = Integer.MAX_VALUE;
    final SettableClock clock = new SettableClock();
    final LongTracking waitTimeTracker = new LongTracking();
    final int GET = 20;
    final int PUT_GOOD = 2;
    final int PUT_BAD = 3;
    final int DISPOSE = 4;
    final int TIMEOUT = 100;
    final int WAITER_TIMEOUT = 200;
    final int DELAY = 1200;
    final UnreliableLifecycle lifecycle = new UnreliableLifecycle();
    final AsyncPool<AtomicBoolean> pool = new AsyncPoolImpl<>("object pool", lifecycle, POOL_SIZE, TIMEOUT, WAITER_TIMEOUT, _executor, MAX_WAITER_SIZE, AsyncPoolImpl.Strategy.MRU, MIN_SIZE, new NoopRateLimiter(), clock, waitTimeTracker);
    PoolStats stats;
    final List<AtomicBoolean> objects = new ArrayList<>();
    pool.start();
    // test values at initialization
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), 0);
    Assert.assertEquals(stats.getTotalDestroyed(), 0);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), 0);
    Assert.assertEquals(stats.getTotalTimedOut(), 0);
    Assert.assertEquals(stats.getTotalWaiterTimedOut(), 0);
    Assert.assertEquals(stats.getTotalBadDestroyed(), 0);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), 0);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), 0);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), 0);
    // do a few gets
    for (int i = 0; i < GET; i++) {
        FutureCallback<AtomicBoolean> cb = new FutureCallback<>();
        pool.get(cb);
        AtomicBoolean obj = cb.get();
        objects.add(obj);
    }
    clock.addDuration(SAMPLING_DURATION_INCREMENT);
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), GET);
    Assert.assertEquals(stats.getTotalDestroyed(), 0);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), GET);
    Assert.assertEquals(stats.getTotalTimedOut(), 0);
    Assert.assertEquals(stats.getTotalBadDestroyed(), 0);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), GET);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), GET);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), GET);
    // do some puts with good objects
    for (int i = 0; i < PUT_GOOD; i++) {
        AtomicBoolean obj = objects.remove(objects.size() - 1);
        pool.put(obj);
    }
    clock.addDuration(SAMPLING_DURATION_INCREMENT);
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), GET);
    Assert.assertEquals(stats.getTotalDestroyed(), 0);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), GET - PUT_GOOD);
    Assert.assertEquals(stats.getTotalTimedOut(), 0);
    Assert.assertEquals(stats.getTotalBadDestroyed(), 0);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), GET);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), GET);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), GET);
    // do some puts with bad objects
    for (int i = 0; i < PUT_BAD; i++) {
        AtomicBoolean obj = objects.remove(objects.size() - 1);
        // invalidate the object
        obj.set(false);
        pool.put(obj);
    }
    clock.addDuration(SAMPLING_DURATION_INCREMENT);
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), GET);
    Assert.assertEquals(stats.getTotalDestroyed(), PUT_BAD);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), GET - PUT_GOOD - PUT_BAD);
    Assert.assertEquals(stats.getTotalTimedOut(), 0);
    Assert.assertEquals(stats.getTotalBadDestroyed(), PUT_BAD);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), GET - PUT_BAD);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), GET - PUT_GOOD);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), GET);
    // do some disposes
    for (int i = 0; i < DISPOSE; i++) {
        AtomicBoolean obj = objects.remove(objects.size() - 1);
        pool.dispose(obj);
    }
    clock.addDuration(SAMPLING_DURATION_INCREMENT);
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), GET);
    Assert.assertEquals(stats.getTotalDestroyed(), PUT_BAD + DISPOSE);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), GET - PUT_GOOD - PUT_BAD - DISPOSE);
    Assert.assertEquals(stats.getTotalTimedOut(), 0);
    Assert.assertEquals(stats.getTotalBadDestroyed(), PUT_BAD + DISPOSE);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), GET - PUT_BAD - DISPOSE);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), GET - PUT_GOOD - PUT_BAD);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), GET - PUT_BAD);
    // wait for a reap -- should destroy the PUT_GOOD objects
    Thread.sleep(DELAY);
    clock.addDuration(SAMPLING_DURATION_INCREMENT);
    stats = pool.getStats();
    Assert.assertEquals(stats.getTotalCreated(), GET);
    Assert.assertEquals(stats.getTotalDestroyed(), PUT_GOOD + PUT_BAD + DISPOSE);
    Assert.assertEquals(stats.getTotalCreateErrors(), 0);
    Assert.assertEquals(stats.getTotalDestroyErrors(), 0);
    Assert.assertEquals(stats.getCheckedOut(), GET - PUT_GOOD - PUT_BAD - DISPOSE);
    Assert.assertEquals(stats.getTotalTimedOut(), PUT_GOOD);
    Assert.assertEquals(stats.getTotalBadDestroyed(), PUT_BAD + DISPOSE);
    Assert.assertEquals(stats.getMaxPoolSize(), POOL_SIZE);
    Assert.assertEquals(stats.getMinPoolSize(), 0);
    Assert.assertEquals(stats.getPoolSize(), GET - PUT_GOOD - PUT_BAD - DISPOSE);
    Assert.assertEquals(stats.getSampleMaxCheckedOut(), GET - PUT_GOOD - PUT_BAD - DISPOSE);
    Assert.assertEquals(stats.getSampleMaxPoolSize(), GET - PUT_BAD - DISPOSE);
}

Example 18 with SettableClock

use of com.linkedin.util.clock.SettableClock in project rest.li by linkedin.

the class TestHttpNettyClient method testFailBackoff.

@Test
public void testFailBackoff() throws Exception {
    final int WARM_UP = 10;
    final int N = 5;
    final int MAX_RATE_LIMITING_PERIOD = 500;
    final CountDownLatch warmUpLatch = new CountDownLatch(WARM_UP);
    final CountDownLatch latch = new CountDownLatch(N);
    final AtomicReference<Boolean> isShutdown = new AtomicReference<>(false);
    AsyncPool<Channel> testPool = new AsyncPoolImpl<>("test pool", new AsyncPool.Lifecycle<Channel>() {

        @Override
        public void create(Callback<Channel> callback) {
            if (warmUpLatch.getCount() > 0) {
                warmUpLatch.countDown();
            } else {
                latch.countDown();
            }
            callback.onError(new Throwable("Oops..."));
        }

        @Override
        public boolean validateGet(Channel obj) {
            return false;
        }

        @Override
        public boolean validatePut(Channel obj) {
            return false;
        }

        @Override
        public void destroy(Channel obj, boolean error, Callback<Channel> callback) {
        }

        @Override
        public PoolStats.LifecycleStats getStats() {
            return null;
        }
    }, 200, 30000, _scheduler, Integer.MAX_VALUE, AsyncPoolImpl.Strategy.MRU, 0, new ExponentialBackOffRateLimiter(0, MAX_RATE_LIMITING_PERIOD, Math.max(10, MAX_RATE_LIMITING_PERIOD / 32), _scheduler), new SettableClock(), new LongTracking());
    HttpNettyClient client = new HttpNettyClient(address -> testPool, _scheduler, MAX_RATE_LIMITING_PERIOD * 2, 500);
    final RestRequest r = new RestRequestBuilder(URI.create("http://localhost:8080/")).setMethod("GET").build();
    final ExecutorService executor = Executors.newSingleThreadExecutor();
    executor.execute(() -> {
        while (!isShutdown.get()) {
            try {
                FutureCallback<RestResponse> callback = new FutureCallback<>();
                client.restRequest(r, new RequestContext(), new HashMap<>(), new TransportCallbackAdapter<>(callback));
                callback.get();
            } catch (Exception e) {
            // ignore
            }
        }
    });
    // First ensure a bunch fail to get the rate limiting going
    warmUpLatch.await(120, TimeUnit.SECONDS);
    // Now we should be rate limited
    long start = System.currentTimeMillis();
    System.err.println("Starting at " + start);
    long lowTolerance = N * MAX_RATE_LIMITING_PERIOD * 4 / 5;
    long highTolerance = N * MAX_RATE_LIMITING_PERIOD * 5 / 4;
    Assert.assertTrue(latch.await(highTolerance, TimeUnit.MILLISECONDS), "Should have finished within " + highTolerance + "ms");
    long elapsed = System.currentTimeMillis() - start;
    Assert.assertTrue(elapsed > lowTolerance, "Should have finished after " + lowTolerance + "ms (took " + elapsed + ")");
    // shutdown everything
    isShutdown.set(true);
    executor.shutdown();
}

Example 19 with SettableClock

use of com.linkedin.util.clock.SettableClock in project rest.li by linkedin.

the class DegraderTrackerClientTest method testClientStreamRequest.

@Test(groups = { "small", "back-end" })
public void testClientStreamRequest() throws URISyntaxException {
    URI uri = URI.create("http://test.qa.com:1234/foo");
    double weight = 3d;
    TestClient wrappedClient = new TestClient(true);
    Clock clock = new SettableClock();
    Map<Integer, PartitionData> partitionDataMap = createDefaultPartitionData(3d);
    DegraderTrackerClient client = new DegraderTrackerClientImpl(uri, partitionDataMap, wrappedClient, clock, null);
    Assert.assertEquals(client.getUri(), uri);
    Double clientWeight = client.getPartitionWeight(DefaultPartitionAccessor.DEFAULT_PARTITION_ID);
    Assert.assertEquals(clientWeight, weight);
    Assert.assertEquals(client.getTransportClient(), wrappedClient);
    StreamRequest streamRequest = new StreamRequestBuilder(uri).build(EntityStreams.emptyStream());
    Map<String, String> restWireAttrs = new HashMap<>();
    TestTransportCallback<StreamResponse> restCallback = new TestTransportCallback<>();
    client.streamRequest(streamRequest, new RequestContext(), restWireAttrs, restCallback);
    Assert.assertFalse(restCallback.response.hasError());
    Assert.assertSame(wrappedClient.streamRequest, streamRequest);
    Assert.assertEquals(wrappedClient.restWireAttrs, restWireAttrs);
}

Example 20 with SettableClock

use of com.linkedin.util.clock.SettableClock in project rest.li by linkedin.

the class DegraderTrackerClientTest method testDoNotSlowStartWhenTrue.

@Test
public void testDoNotSlowStartWhenTrue() {
    Map<Integer, PartitionData> partitionDataMap = createDefaultPartitionData(1d);
    DegraderImpl.Config config = new DegraderImpl.Config();
    double initialDropRate = 0.99d;
    config.setInitialDropRate(initialDropRate);
    DegraderTrackerClient client = new DegraderTrackerClientImpl(URI.create("http://test.qa.com:1234/foo"), partitionDataMap, new TestClient(), new SettableClock(), config, DegraderLoadBalancerStrategyConfig.DEFAULT_UPDATE_INTERVAL_MS, TrackerClientImpl.DEFAULT_ERROR_STATUS_PATTERN, true);
    DegraderControl degraderControl = client.getDegraderControl(DefaultPartitionAccessor.DEFAULT_PARTITION_ID);
    Assert.assertEquals(degraderControl.getInitialDropRate(), DegraderImpl.DEFAULT_DO_NOT_SLOW_START_INITIAL_DROP_RATE, "Initial drop rate in config should have been overridden by doNotSlowStart uri property.");
}