| /* |
| * 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.druid.guice; |
| |
| |
| import org.apache.druid.java.util.common.lifecycle.LifecycleStop; |
| import org.apache.druid.java.util.common.logger.Logger; |
| |
| import java.util.concurrent.ForkJoinPool; |
| import java.util.concurrent.TimeUnit; |
| |
| public class LifecycleForkJoinPoolProvider |
| { |
| private static final Logger LOG = new Logger(LifecycleForkJoinPoolProvider.class); |
| private final long awaitShutdownMillis; |
| private final ForkJoinPool pool; |
| |
| public LifecycleForkJoinPoolProvider( |
| int parallelism, |
| ForkJoinPool.ForkJoinWorkerThreadFactory factory, |
| Thread.UncaughtExceptionHandler handler, |
| boolean asyncMode, |
| long awaitShutdownMillis |
| ) |
| { |
| this.pool = new ForkJoinPool(parallelism, factory, handler, asyncMode); |
| this.awaitShutdownMillis = awaitShutdownMillis; |
| } |
| |
| @LifecycleStop |
| public void stop() |
| { |
| LOG.info("Shutting down ForkJoinPool [%s]", this); |
| pool.shutdown(); |
| try { |
| if (!pool.awaitTermination(awaitShutdownMillis, TimeUnit.MILLISECONDS)) { |
| LOG.warn("Failed to complete all tasks in FJP [%s]", this); |
| } |
| } |
| catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new RuntimeException("interrupted on shutdown", e); |
| } |
| } |
| |
| public ForkJoinPool getPool() |
| { |
| return pool; |
| } |
| } |