| package org.apache.cassandra.concurrent; |
| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| |
| import java.util.UUID; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ConcurrentLinkedQueue; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.LinkedBlockingQueue; |
| import java.util.concurrent.RunnableFuture; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import com.google.common.base.Throwables; |
| import com.google.common.net.InetAddresses; |
| import com.google.common.util.concurrent.ListenableFutureTask; |
| import com.google.common.util.concurrent.Uninterruptibles; |
| import org.junit.Assert; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.service.ClientWarn; |
| import org.apache.cassandra.tracing.TraceState; |
| import org.apache.cassandra.tracing.TraceStateImpl; |
| import org.apache.cassandra.tracing.Tracing; |
| import org.apache.cassandra.utils.FBUtilities; |
| import org.apache.cassandra.utils.WrappedRunnable; |
| import org.assertj.core.api.Assertions; |
| |
| import static java.util.concurrent.TimeUnit.MILLISECONDS; |
| |
| public class DebuggableThreadPoolExecutorTest |
| { |
| @BeforeClass |
| public static void setupDD() |
| { |
| DatabaseDescriptor.daemonInitialization(); |
| } |
| |
| @Test |
| public void testSerialization() |
| { |
| LinkedBlockingQueue<Runnable> q = new LinkedBlockingQueue<Runnable>(1); |
| DebuggableThreadPoolExecutor executor = new DebuggableThreadPoolExecutor(1, |
| Integer.MAX_VALUE, |
| TimeUnit.MILLISECONDS, |
| q, |
| new NamedThreadFactory("TEST")); |
| WrappedRunnable runnable = new WrappedRunnable() |
| { |
| public void runMayThrow() throws InterruptedException |
| { |
| Thread.sleep(50); |
| } |
| }; |
| long start = System.nanoTime(); |
| for (int i = 0; i < 10; i++) |
| { |
| executor.execute(runnable); |
| } |
| assert q.size() > 0 : q.size(); |
| while (executor.getCompletedTaskCount() < 10) |
| continue; |
| long delta = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start); |
| assert delta >= 9 * 50 : delta; |
| } |
| |
| @Test |
| public void testLocalStatePropagation() |
| { |
| DebuggableThreadPoolExecutor executor = DebuggableThreadPoolExecutor.createWithFixedPoolSize("TEST", 1); |
| try |
| { |
| checkLocalStateIsPropagated(executor); |
| } |
| finally |
| { |
| executor.shutdown(); |
| } |
| } |
| |
| public static void checkLocalStateIsPropagated(LocalAwareExecutorService executor) |
| { |
| checkClientWarningsArePropagated(executor, () -> executor.execute(() -> ClientWarn.instance.warn("msg"))); |
| checkClientWarningsArePropagated(executor, () -> executor.submit(() -> ClientWarn.instance.warn("msg"))); |
| checkClientWarningsArePropagated(executor, () -> executor.submit(() -> ClientWarn.instance.warn("msg"), null)); |
| checkClientWarningsArePropagated(executor, () -> executor.submit((Callable<Void>) () -> { |
| ClientWarn.instance.warn("msg"); |
| return null; |
| })); |
| |
| checkTracingIsPropagated(executor, () -> executor.execute(() -> Tracing.trace("msg"))); |
| checkTracingIsPropagated(executor, () -> executor.submit(() -> Tracing.trace("msg"))); |
| checkTracingIsPropagated(executor, () -> executor.submit(() -> Tracing.trace("msg"), null)); |
| checkTracingIsPropagated(executor, () -> executor.submit((Callable<Void>) () -> { |
| Tracing.trace("msg"); |
| return null; |
| })); |
| } |
| |
| public static void checkClientWarningsArePropagated(LocalAwareExecutorService executor, Runnable schedulingTask) { |
| ClientWarn.instance.captureWarnings(); |
| Assertions.assertThat(ClientWarn.instance.getWarnings()).isNullOrEmpty(); |
| |
| ClientWarn.instance.warn("msg0"); |
| long initCompletedTasks = executor.getCompletedTaskCount(); |
| schedulingTask.run(); |
| while (executor.getCompletedTaskCount() == initCompletedTasks) Uninterruptibles.sleepUninterruptibly(10, MILLISECONDS); |
| ClientWarn.instance.warn("msg1"); |
| |
| Assertions.assertThat(ClientWarn.instance.getWarnings()).containsExactlyInAnyOrder("msg0", "msg", "msg1"); |
| } |
| |
| public static void checkTracingIsPropagated(LocalAwareExecutorService executor, Runnable schedulingTask) { |
| ClientWarn.instance.captureWarnings(); |
| Assertions.assertThat(ClientWarn.instance.getWarnings()).isNullOrEmpty(); |
| |
| ConcurrentLinkedQueue<String> q = new ConcurrentLinkedQueue<>(); |
| Tracing.instance.set(new TraceState(FBUtilities.getLocalAddressAndPort(), UUID.randomUUID(), Tracing.TraceType.NONE) |
| { |
| @Override |
| protected void traceImpl(String message) |
| { |
| q.add(message); |
| } |
| }); |
| Tracing.trace("msg0"); |
| long initCompletedTasks = executor.getCompletedTaskCount(); |
| schedulingTask.run(); |
| while (executor.getCompletedTaskCount() == initCompletedTasks) Uninterruptibles.sleepUninterruptibly(10, MILLISECONDS); |
| Tracing.trace("msg1"); |
| |
| Assertions.assertThat(q.toArray()).containsExactlyInAnyOrder("msg0", "msg", "msg1"); |
| } |
| |
| @Test |
| public void testExecuteFutureTaskWhileTracing() |
| { |
| LinkedBlockingQueue<Runnable> q = new LinkedBlockingQueue<Runnable>(1); |
| DebuggableThreadPoolExecutor executor = new DebuggableThreadPoolExecutor(1, |
| Integer.MAX_VALUE, |
| TimeUnit.MILLISECONDS, |
| q, |
| new NamedThreadFactory("TEST")); |
| Runnable test = () -> executor.execute(failingTask()); |
| try |
| { |
| // make sure the non-tracing case works |
| Throwable cause = catchUncaughtExceptions(test); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| |
| // tracing should have the same semantics |
| cause = catchUncaughtExceptions(() -> withTracing(test)); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| } |
| finally |
| { |
| executor.shutdown(); |
| } |
| } |
| |
| @Test |
| public void testSubmitFutureTaskWhileTracing() |
| { |
| LinkedBlockingQueue<Runnable> q = new LinkedBlockingQueue<Runnable>(1); |
| DebuggableThreadPoolExecutor executor = new DebuggableThreadPoolExecutor(1, |
| Integer.MAX_VALUE, |
| TimeUnit.MILLISECONDS, |
| q, |
| new NamedThreadFactory("TEST")); |
| FailingRunnable test = () -> executor.submit(failingTask()).get(); |
| try |
| { |
| // make sure the non-tracing case works |
| Throwable cause = catchUncaughtExceptions(test); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| |
| // tracing should have the same semantics |
| cause = catchUncaughtExceptions(() -> withTracing(test)); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| } |
| finally |
| { |
| executor.shutdown(); |
| } |
| } |
| |
| @Test |
| public void testSubmitWithResultFutureTaskWhileTracing() |
| { |
| LinkedBlockingQueue<Runnable> q = new LinkedBlockingQueue<Runnable>(1); |
| DebuggableThreadPoolExecutor executor = new DebuggableThreadPoolExecutor(1, |
| Integer.MAX_VALUE, |
| TimeUnit.MILLISECONDS, |
| q, |
| new NamedThreadFactory("TEST")); |
| FailingRunnable test = () -> executor.submit(failingTask(), 42).get(); |
| try |
| { |
| Throwable cause = catchUncaughtExceptions(test); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| cause = catchUncaughtExceptions(() -> withTracing(test)); |
| Assert.assertEquals(DebuggingThrowsException.class, cause.getClass()); |
| } |
| finally |
| { |
| executor.shutdown(); |
| } |
| } |
| |
| private static void withTracing(Runnable fn) |
| { |
| TraceState state = Tracing.instance.get(); |
| try { |
| Tracing.instance.set(new TraceStateImpl(InetAddressAndPort.getByAddress(InetAddresses.forString("127.0.0.1")), UUID.randomUUID(), Tracing.TraceType.NONE)); |
| fn.run(); |
| } |
| finally |
| { |
| Tracing.instance.set(state); |
| } |
| } |
| |
| private static Throwable catchUncaughtExceptions(Runnable fn) |
| { |
| Thread.UncaughtExceptionHandler defaultHandler = Thread.getDefaultUncaughtExceptionHandler(); |
| try |
| { |
| AtomicReference<Throwable> ref = new AtomicReference<>(null); |
| CountDownLatch latch = new CountDownLatch(1); |
| Thread.setDefaultUncaughtExceptionHandler((thread, cause) -> { |
| ref.set(cause); |
| latch.countDown(); |
| }); |
| fn.run(); |
| try |
| { |
| latch.await(30, TimeUnit.SECONDS); |
| } |
| catch (InterruptedException e) |
| { |
| throw new AssertionError(e); |
| } |
| return ref.get(); |
| } |
| finally |
| { |
| Thread.setDefaultUncaughtExceptionHandler(defaultHandler); |
| } |
| } |
| |
| private static String failingFunction() |
| { |
| throw new DebuggingThrowsException(); |
| } |
| |
| private static RunnableFuture<String> failingTask() |
| { |
| return ListenableFutureTask.create(DebuggableThreadPoolExecutorTest::failingFunction); |
| } |
| |
| private static final class DebuggingThrowsException extends RuntimeException { |
| |
| } |
| |
| // REVIEWER : I know this is the same as WrappedRunnable, but that doesn't support lambda... |
| private interface FailingRunnable extends Runnable |
| { |
| void doRun() throws Throwable; |
| |
| default void run() |
| { |
| try |
| { |
| doRun(); |
| } |
| catch (Throwable t) |
| { |
| Throwables.throwIfUnchecked(t); |
| throw new RuntimeException(t); |
| } |
| } |
| } |
| } |