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76 changes: 76 additions & 0 deletions
76
common/src/main/java/org/apache/rocketmq/common/utils/AsyncShutdownHelper.java
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| /* | ||
| * 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.rocketmq.common.utils; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
| import java.util.concurrent.CountDownLatch; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
|
|
||
| public class AsyncShutdownHelper { | ||
| private final AtomicBoolean shutdown; | ||
| private final List<Shutdown> targetList; | ||
|
|
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| private CountDownLatch countDownLatch; | ||
|
|
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| public AsyncShutdownHelper() { | ||
| this.targetList = new ArrayList<>(); | ||
| this.shutdown = new AtomicBoolean(false); | ||
| } | ||
|
|
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| public void addTarget(Shutdown target) { | ||
| if (shutdown.get()) { | ||
| return; | ||
| } | ||
| targetList.add(target); | ||
| } | ||
|
|
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| public AsyncShutdownHelper shutdown() { | ||
| if (shutdown.get()) { | ||
| return this; | ||
| } | ||
| if (targetList.isEmpty()) { | ||
| return this; | ||
| } | ||
| this.countDownLatch = new CountDownLatch(targetList.size()); | ||
| for (Shutdown target : targetList) { | ||
| Runnable runnable = () -> { | ||
| try { | ||
| target.shutdown(); | ||
| } catch (Exception ignored) { | ||
|
|
||
| } finally { | ||
| countDownLatch.countDown(); | ||
| } | ||
| }; | ||
| new Thread(runnable).start(); | ||
| } | ||
| return this; | ||
| } | ||
|
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| public boolean await(long time, TimeUnit unit) throws InterruptedException { | ||
| if (shutdown.get()) { | ||
| return false; | ||
| } | ||
| try { | ||
| return this.countDownLatch.await(time, unit); | ||
| } finally { | ||
| shutdown.compareAndSet(false, true); | ||
| } | ||
| } | ||
| } |