| /** |
| * 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. |
| */ |
| package org.apache.pulsar.tests; |
| |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertTrue; |
| import java.util.HashSet; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutionException; |
| import org.testng.annotations.Test; |
| |
| public class ThreadLocalStateCleanerTest { |
| final ThreadLocal<Integer> magicNumberThreadLocal = ThreadLocal.withInitial(() -> 42); |
| |
| @Test |
| public void testThreadLocalStateCleanupInCurrentThread() { |
| magicNumberThreadLocal.set(44); |
| assertEquals(magicNumberThreadLocal.get().intValue(), 44); |
| ThreadLocalStateCleaner.INSTANCE.cleanupThreadLocal(magicNumberThreadLocal, Thread.currentThread(), null); |
| assertEquals(magicNumberThreadLocal.get().intValue(), 42); |
| } |
| |
| private static class ThreadValueEntry { |
| private final Thread thread; |
| private final Object value; |
| |
| private ThreadValueEntry(Thread thread, Object value) { |
| this.thread = thread; |
| this.value = value; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| ThreadValueEntry that = (ThreadValueEntry) o; |
| return Objects.equals(thread, that.thread) && Objects.equals(value, that.value); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(thread, value); |
| } |
| } |
| |
| |
| @Test |
| public void testThreadLocalStateCleanupInCurrentAndOtherThread() throws InterruptedException, ExecutionException { |
| magicNumberThreadLocal.set(44); |
| assertEquals(magicNumberThreadLocal.get().intValue(), 44); |
| |
| CountDownLatch numberHasBeenSet = new CountDownLatch(1); |
| CountDownLatch shutdownLatch = new CountDownLatch(1); |
| CompletableFuture<Integer> valueAfterReset = new CompletableFuture<>(); |
| Thread thread = new Thread(() -> { |
| try { |
| magicNumberThreadLocal.set(45); |
| assertEquals(magicNumberThreadLocal.get().intValue(), 45); |
| numberHasBeenSet.countDown(); |
| shutdownLatch.await(); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new RuntimeException(e); |
| } finally { |
| valueAfterReset.complete(magicNumberThreadLocal.get()); |
| } |
| }); |
| thread.start(); |
| numberHasBeenSet.await(); |
| Set<ThreadValueEntry> replacedValues = new HashSet<>(); |
| ThreadLocalStateCleaner.INSTANCE.cleanupThreadLocal(magicNumberThreadLocal, (t, currentValue) -> { |
| replacedValues.add(new ThreadValueEntry(t, currentValue)); |
| }); |
| shutdownLatch.countDown(); |
| assertEquals(magicNumberThreadLocal.get().intValue(), 42); |
| assertEquals(valueAfterReset.get().intValue(), 42); |
| assertEquals(replacedValues.size(), 2); |
| assertTrue(replacedValues.contains(new ThreadValueEntry(thread, 45))); |
| assertTrue(replacedValues.contains(new ThreadValueEntry(Thread.currentThread(), 44))); |
| } |
| } |