| /* |
| * Copyright 1999-2019 Seata.io Group. |
| * |
| * Licensed 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 io.seata.samples.saga; |
| |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.context.support.AbstractApplicationContext; |
| |
| /** |
| * The type Application keeper. |
| */ |
| public class ApplicationKeeper { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationKeeper.class); |
| |
| private final ReentrantLock LOCK = new ReentrantLock(); |
| private final Condition STOP = LOCK.newCondition(); |
| |
| /** |
| * Instantiates a new Application keeper. |
| * |
| * @param applicationContext the application context |
| */ |
| public ApplicationKeeper(AbstractApplicationContext applicationContext) { |
| addShutdownHook(applicationContext); |
| } |
| |
| private void addShutdownHook(final AbstractApplicationContext applicationContext) { |
| Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() { |
| @Override |
| public void run() { |
| try { |
| applicationContext.close(); |
| LOGGER.info("ApplicationContext " + applicationContext + " is closed."); |
| } catch (Exception e) { |
| LOGGER.error("Failed to close ApplicationContext", e); |
| } |
| |
| try { |
| LOCK.lock(); |
| STOP.signal(); |
| } finally { |
| LOCK.unlock(); |
| } |
| } |
| })); |
| } |
| |
| /** |
| * Keep. |
| */ |
| public void keep() { |
| synchronized (LOCK) { |
| try { |
| LOGGER.info("Application is keep running ... "); |
| LOCK.wait(); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |