/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.job.lite.internal.guarantee;
import com.dangdang.ddframe.job.lite.internal.config.ConfigurationService;
import com.dangdang.ddframe.job.lite.internal.storage.JobNodeStorage;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import java.util.Collection;
/**
* 保证分布式任务全部开始和结束状态的服务.
*
* @author zhangliang
*/
public final class GuaranteeService {
private final JobNodeStorage jobNodeStorage;
private final ConfigurationService configService;
public GuaranteeService(final CoordinatorRegistryCenter regCenter, final String jobName) {
jobNodeStorage = new JobNodeStorage(regCenter, jobName);
configService = new ConfigurationService(regCenter, jobName);
}
/**
* 根据分片项注册任务开始运行.
*
* @param shardingItems 待注册的分片项
*/
public void registerStart(final Collection<Integer> shardingItems) {
for (int each : shardingItems) {
jobNodeStorage.createJobNodeIfNeeded(GuaranteeNode.getStartedNode(each));
}
}
/**
* 判断是否所有的任务均启动完毕.
*
* @return 是否所有的任务均启动完毕
*/
public boolean isAllStarted() {
return jobNodeStorage.isJobNodeExisted(GuaranteeNode.STARTED_ROOT)
&& configService.load(false).getTypeConfig().getCoreConfig().getShardingTotalCount() == jobNodeStorage.getJobNodeChildrenKeys(GuaranteeNode.STARTED_ROOT).size();
}
/**
* 清理所有任务启动信息.
*/
public void clearAllStartedInfo() {
jobNodeStorage.removeJobNodeIfExisted(GuaranteeNode.STARTED_ROOT);
}
/**
* 根据分片项注册任务完成运行.
*
* @param shardingItems 待注册的分片项
*/
public void registerComplete(final Collection<Integer> shardingItems) {
for (int each : shardingItems) {
jobNodeStorage.createJobNodeIfNeeded(GuaranteeNode.getCompletedNode(each));
}
}
/**
* 判断是否所有的任务均执行完毕.
*
* @return 是否所有的任务均执行完毕
*/
public boolean isAllCompleted() {
return jobNodeStorage.isJobNodeExisted(GuaranteeNode.COMPLETED_ROOT)
&& configService.load(false).getTypeConfig().getCoreConfig().getShardingTotalCount() <= jobNodeStorage.getJobNodeChildrenKeys(GuaranteeNode.COMPLETED_ROOT).size();
}
/**
* 清理所有任务启动信息.
*/
public void clearAllCompletedInfo() {
jobNodeStorage.removeJobNodeIfExisted(GuaranteeNode.COMPLETED_ROOT);
}
}