use of com.linkedin.r2.transport.http.client.AsyncPoolImpl 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));
HttpNettyClient client = new HttpNettyClient(address -> testPool, _scheduler, 500, 500, 1024 * 1024 * 2);
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<RestResponse>(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();
}
use of com.linkedin.r2.transport.http.client.AsyncPoolImpl in project rest.li by linkedin.
the class TestAsyncPool method testWaitTimeStats.
@Test
public void testWaitTimeStats() throws Exception {
final int POOL_SIZE = 25;
final int CHECKOUT = POOL_SIZE;
final long DELAY = 100;
final double DELTA = 0.1;
DelayedLifecycle lifecycle = new DelayedLifecycle(DELAY);
final AsyncPool<Object> pool = new AsyncPoolImpl<Object>("object pool", lifecycle, POOL_SIZE, 100, _executor);
pool.start();
PoolStats stats;
List<Object> objects = new ArrayList<Object>(CHECKOUT);
for (int i = 0; i < CHECKOUT; i++) {
FutureCallback<Object> cb = new FutureCallback<Object>();
pool.get(cb);
Object o = cb.get();
objects.add(o);
}
stats = pool.getStats();
Assert.assertEquals(stats.getWaitTimeAvg(), DELAY, DELTA * DELAY);
}
use of com.linkedin.r2.transport.http.client.AsyncPoolImpl in project rest.li by linkedin.
the class TestAsyncPool method testGetStats.
@Test
public void testGetStats() throws Exception {
final int POOL_SIZE = 25;
final int GET = 20;
final int PUT_GOOD = 2;
final int PUT_BAD = 3;
final int DISPOSE = 4;
final int TIMEOUT = 100;
final int DELAY = 1200;
final UnreliableLifecycle lifecycle = new UnreliableLifecycle();
final AsyncPool<AtomicBoolean> pool = new AsyncPoolImpl<AtomicBoolean>("object pool", lifecycle, POOL_SIZE, TIMEOUT, _executor);
PoolStats stats;
final List<AtomicBoolean> objects = new ArrayList<AtomicBoolean>();
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.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<AtomicBoolean>();
pool.get(cb);
AtomicBoolean obj = cb.get();
objects.add(obj);
}
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);
}
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);
}
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);
}
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);
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);
}
use of com.linkedin.r2.transport.http.client.AsyncPoolImpl in project rest.li by linkedin.
the class TestAsyncPool method testGetStatsWithErrors.
@Test
public void testGetStatsWithErrors() throws Exception {
final int POOL_SIZE = 25;
final int GET = 20;
final int PUT_BAD = 5;
final int DISPOSE = 7;
final int CREATE_BAD = 9;
final int TIMEOUT = 100;
final UnreliableLifecycle lifecycle = new UnreliableLifecycle();
final AsyncPool<AtomicBoolean> pool = new AsyncPoolImpl<AtomicBoolean>("object pool", lifecycle, POOL_SIZE, TIMEOUT, _executor);
PoolStats stats;
final List<AtomicBoolean> objects = new ArrayList<AtomicBoolean>();
pool.start();
// do a few gets
for (int i = 0; i < GET; i++) {
FutureCallback<AtomicBoolean> cb = new FutureCallback<AtomicBoolean>();
pool.get(cb);
AtomicBoolean obj = cb.get();
objects.add(obj);
}
// put and destroy some, with errors
lifecycle.setFail(true);
for (int i = 0; i < PUT_BAD; i++) {
AtomicBoolean obj = objects.remove(objects.size() - 1);
obj.set(false);
pool.put(obj);
}
for (int i = 0; i < DISPOSE; i++) {
AtomicBoolean obj = objects.remove(objects.size() - 1);
pool.dispose(obj);
}
stats = pool.getStats();
Assert.assertEquals(stats.getTotalDestroyed(), 0);
Assert.assertEquals(stats.getTotalCreateErrors(), 0);
Assert.assertEquals(stats.getTotalDestroyErrors(), PUT_BAD + DISPOSE);
Assert.assertEquals(stats.getTotalBadDestroyed(), PUT_BAD + DISPOSE);
// create some with errors
for (int i = 0; i < CREATE_BAD; i++) {
FutureCallback<AtomicBoolean> cb = new FutureCallback<AtomicBoolean>();
try {
pool.get(cb);
} catch (Exception e) {
// this error is expected
}
}
stats = pool.getStats();
Assert.assertEquals(stats.getCheckedOut(), GET - PUT_BAD - DISPOSE);
// When the each create fails, it will retry and cancel the waiter,
// resulting in a second create error.
Assert.assertEquals(stats.getTotalCreateErrors(), 2 * CREATE_BAD);
}
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