| /* |
| * 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.iotdb.db.service; |
| |
| import org.apache.iotdb.db.conf.IoTDBDescriptor; |
| import org.apache.iotdb.db.engine.StorageEngine; |
| import org.apache.iotdb.db.engine.upgrade.UpgradeLog; |
| import org.apache.iotdb.db.engine.upgrade.UpgradeTask; |
| import org.apache.iotdb.db.exception.StorageEngineException; |
| import org.apache.iotdb.db.utils.UpgradeUtils; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public class UpgradeSevice implements IService { |
| |
| private static final Logger logger = LoggerFactory.getLogger(UpgradeSevice.class); |
| |
| private ExecutorService upgradeThreadPool; |
| private AtomicInteger threadCnt = new AtomicInteger(); |
| private static int cntUpgradeFileNum; |
| |
| private UpgradeSevice() {} |
| |
| public static UpgradeSevice getINSTANCE() { |
| return InstanceHolder.INSTANCE; |
| } |
| |
| public static class InstanceHolder { |
| private static final UpgradeSevice INSTANCE = new UpgradeSevice(); |
| |
| private InstanceHolder() {} |
| } |
| |
| @Override |
| public void start() { |
| int updateThreadNum = IoTDBDescriptor.getInstance().getConfig().getUpgradeThreadNum(); |
| if (updateThreadNum <= 0) { |
| updateThreadNum = 1; |
| } |
| upgradeThreadPool = |
| Executors.newFixedThreadPool( |
| updateThreadNum, r -> new Thread(r, "UpgradeThread-" + threadCnt.getAndIncrement())); |
| UpgradeLog.createUpgradeLog(); |
| countUpgradeFiles(); |
| if (cntUpgradeFileNum == 0) { |
| stop(); |
| return; |
| } |
| upgradeAll(); |
| } |
| |
| @Override |
| public void stop() { |
| UpgradeLog.closeLogWriter(); |
| UpgradeUtils.clearUpgradeRecoverMap(); |
| if (upgradeThreadPool != null) { |
| upgradeThreadPool.shutdownNow(); |
| logger.info("Waiting for upgrade task pool to shut down"); |
| upgradeThreadPool = null; |
| logger.info("Upgrade service stopped"); |
| } |
| } |
| |
| @Override |
| public ServiceType getID() { |
| return ServiceType.UPGRADE_SERVICE; |
| } |
| |
| public static void setCntUpgradeFileNum(int cntUpgradeFileNum) { |
| UpgradeUtils.getCntUpgradeFileLock().writeLock().lock(); |
| try { |
| UpgradeSevice.cntUpgradeFileNum = cntUpgradeFileNum; |
| } finally { |
| UpgradeUtils.getCntUpgradeFileLock().writeLock().unlock(); |
| } |
| } |
| |
| public static int getCntUpgradeFileNum() { |
| UpgradeUtils.getCntUpgradeFileLock().readLock().lock(); |
| try { |
| return cntUpgradeFileNum; |
| } finally { |
| UpgradeUtils.getCntUpgradeFileLock().readLock().unlock(); |
| } |
| } |
| |
| public void submitUpgradeTask(UpgradeTask upgradeTask) { |
| upgradeThreadPool.submit(upgradeTask); |
| } |
| |
| private static void countUpgradeFiles() { |
| cntUpgradeFileNum = StorageEngine.getInstance().countUpgradeFiles(); |
| logger.info("finish counting upgrading files, total num:{}", cntUpgradeFileNum); |
| } |
| |
| private static void upgradeAll() { |
| try { |
| StorageEngine.getInstance().upgradeAll(); |
| } catch (StorageEngineException e) { |
| logger.error("Cannot perform a global upgrade because", e); |
| } |
| } |
| } |