| /** |
| * 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.client.util; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import io.netty.util.concurrent.DefaultThreadFactory; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import lombok.Getter; |
| import lombok.extern.slf4j.Slf4j; |
| import org.apache.commons.lang3.tuple.Pair; |
| import org.apache.pulsar.common.util.Murmur3_32Hash; |
| |
| @Slf4j |
| public class ExecutorProvider { |
| private final int numThreads; |
| private final List<Pair<ExecutorService, ExtendedThreadFactory>> executors; |
| private final AtomicInteger currentThread = new AtomicInteger(0); |
| private final String poolName; |
| private volatile boolean isShutdown; |
| |
| public static class ExtendedThreadFactory extends DefaultThreadFactory { |
| @Getter |
| private volatile Thread thread; |
| public ExtendedThreadFactory(String poolName) { |
| super(poolName, false); |
| } |
| public ExtendedThreadFactory(String poolName, boolean daemon) { |
| super(poolName, daemon); |
| } |
| |
| @Override |
| public Thread newThread(Runnable r) { |
| Thread thread = super.newThread(r); |
| thread.setUncaughtExceptionHandler((t, e) -> |
| log.error("Thread {} got uncaught Exception", t.getName(), e)); |
| this.thread = thread; |
| return thread; |
| } |
| } |
| |
| public ExecutorProvider(int numThreads, String poolName) { |
| checkArgument(numThreads > 0); |
| this.numThreads = numThreads; |
| Objects.requireNonNull(poolName); |
| executors = new ArrayList<>(numThreads); |
| for (int i = 0; i < numThreads; i++) { |
| ExtendedThreadFactory threadFactory = new ExtendedThreadFactory( |
| poolName, Thread.currentThread().isDaemon()); |
| ExecutorService executor = createExecutor(threadFactory); |
| executors.add(Pair.of(executor, threadFactory)); |
| } |
| isShutdown = false; |
| this.poolName = poolName; |
| } |
| |
| protected ExecutorService createExecutor(ExtendedThreadFactory threadFactory) { |
| return Executors.newSingleThreadExecutor(threadFactory); |
| } |
| |
| public ExecutorService getExecutor() { |
| return executors.get((currentThread.getAndIncrement() & Integer.MAX_VALUE) % numThreads).getKey(); |
| } |
| |
| public ExecutorService getExecutor(Object object) { |
| return getExecutorInternal(object == null ? -1 : object.hashCode() & Integer.MAX_VALUE); |
| } |
| |
| public ExecutorService getExecutor(byte[] bytes) { |
| int keyHash = Murmur3_32Hash.getInstance().makeHash(bytes); |
| return getExecutorInternal(keyHash); |
| } |
| |
| private ExecutorService getExecutorInternal(int hash) { |
| return executors.get((hash & Integer.MAX_VALUE) % numThreads).getKey(); |
| } |
| |
| public void shutdownNow() { |
| executors.forEach(entry -> { |
| ExecutorService executor = entry.getKey(); |
| ExtendedThreadFactory threadFactory = entry.getValue(); |
| executor.shutdownNow(); |
| try { |
| if (!executor.awaitTermination(10, TimeUnit.SECONDS)) { |
| log.warn("Failed to terminate executor with pool name {} within timeout. The following are stack" |
| + " traces of still running threads.\n{}", |
| poolName, getThreadDump(threadFactory.getThread())); |
| } |
| } catch (InterruptedException e) { |
| log.warn("Shutdown of thread pool was interrupted"); |
| } |
| }); |
| isShutdown = true; |
| } |
| |
| public boolean isShutdown() { |
| return isShutdown; |
| } |
| |
| private String getThreadDump(Thread thread) { |
| StringBuilder dump = new StringBuilder(); |
| dump.append('\n'); |
| dump.append(String.format("\"%s\" %s prio=%d tid=%d %s%njava.lang.Thread.State: %s", thread.getName(), |
| (thread.isDaemon() ? "daemon" : ""), thread.getPriority(), thread.getId(), |
| Thread.State.WAITING.equals(thread.getState()) ? "in Object.wait()" : thread.getState().name(), |
| Thread.State.WAITING.equals(thread.getState()) ? "WAITING (on object monitor)" |
| : thread.getState())); |
| for (StackTraceElement stackTraceElement : thread.getStackTrace()) { |
| dump.append("\n at "); |
| dump.append(stackTraceElement); |
| } |
| dump.append("\n"); |
| return dump.toString(); |
| } |
| } |