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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; | ||
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import java.util.ArrayList; | ||
import java.util.List; | ||
import java.util.concurrent.CountDownLatch; | ||
import java.util.concurrent.TimeUnit; | ||
import java.util.concurrent.atomic.AtomicBoolean; | ||
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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) { | ||
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} 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); | ||
} | ||
} | ||
} |