/*
* 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.reconcile;
import com.dangdang.ddframe.job.lite.config.LiteJobConfiguration;
import com.dangdang.ddframe.job.lite.internal.config.ConfigurationService;
import com.dangdang.ddframe.job.lite.internal.election.LeaderService;
import com.dangdang.ddframe.job.lite.internal.sharding.ShardingService;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import com.google.common.util.concurrent.AbstractScheduledService;
import lombok.extern.slf4j.Slf4j;
import java.util.concurrent.TimeUnit;
/**
* 调解分布式作业不一致状态服务.
*
* @author caohao
*/
@Slf4j
public final class ReconcileService extends AbstractScheduledService {
private long lastReconcileTime;
private final ConfigurationService configService;
private final ShardingService shardingService;
private final LeaderService leaderService;
public ReconcileService(final CoordinatorRegistryCenter regCenter, final String jobName) {
lastReconcileTime = System.currentTimeMillis();
configService = new ConfigurationService(regCenter, jobName);
shardingService = new ShardingService(regCenter, jobName);
leaderService = new LeaderService(regCenter, jobName);
}
@Override
protected void runOneIteration() throws Exception {
LiteJobConfiguration config = configService.load(true);
int reconcileIntervalMinutes = null == config ? -1 : config.getReconcileIntervalMinutes();
if (reconcileIntervalMinutes > 0 && (System.currentTimeMillis() - lastReconcileTime >= reconcileIntervalMinutes * 60 * 1000)) {
lastReconcileTime = System.currentTimeMillis();
if (leaderService.isLeaderUntilBlock() && !shardingService.isNeedSharding() && shardingService.hasShardingInfoInOfflineServers()) {
log.warn("Elastic Job: job status node has inconsistent value,start reconciling...");
shardingService.setReshardingFlag();
}
}
}
@Override
protected Scheduler scheduler() {
return Scheduler.newFixedDelaySchedule(0, 1, TimeUnit.MINUTES);
}
}