/*
* 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.api;
import com.dangdang.ddframe.job.api.ElasticJob;
import com.dangdang.ddframe.job.api.script.ScriptJob;
import com.dangdang.ddframe.job.event.JobEventBus;
import com.dangdang.ddframe.job.event.JobEventConfiguration;
import com.dangdang.ddframe.job.exception.JobConfigurationException;
import com.dangdang.ddframe.job.exception.JobSystemException;
import com.dangdang.ddframe.job.executor.JobFacade;
import com.dangdang.ddframe.job.lite.api.listener.AbstractDistributeOnceElasticJobListener;
import com.dangdang.ddframe.job.lite.api.listener.ElasticJobListener;
import com.dangdang.ddframe.job.lite.api.strategy.JobInstance;
import com.dangdang.ddframe.job.lite.config.LiteJobConfiguration;
import com.dangdang.ddframe.job.lite.internal.guarantee.GuaranteeService;
import com.dangdang.ddframe.job.lite.internal.schedule.JobRegistry;
import com.dangdang.ddframe.job.lite.internal.schedule.JobScheduleController;
import com.dangdang.ddframe.job.lite.internal.schedule.JobShutdownHookPlugin;
import com.dangdang.ddframe.job.lite.internal.schedule.LiteJob;
import com.dangdang.ddframe.job.lite.internal.schedule.LiteJobFacade;
import com.dangdang.ddframe.job.lite.internal.schedule.SchedulerFacade;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import com.google.common.base.Optional;
import lombok.Getter;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.impl.StdSchedulerFactory;
import java.util.Arrays;
import java.util.List;
import java.util.Properties;
/**
* 作业调度器.
*
* @author zhangliang
* @author caohao
*/
public class JobScheduler {
public static final String ELASTIC_JOB_DATA_MAP_KEY = "elasticJob";
private static final String JOB_FACADE_DATA_MAP_KEY = "jobFacade";
private final LiteJobConfiguration liteJobConfig;
private final CoordinatorRegistryCenter regCenter;
// TODO 为测试使用,测试用例不能反复new monitor service,以后需要把MonitorService重构为单例
@Getter
private final SchedulerFacade schedulerFacade;
private final JobFacade jobFacade;
public JobScheduler(final CoordinatorRegistryCenter regCenter, final LiteJobConfiguration liteJobConfig, final ElasticJobListener... elasticJobListeners) {
this(regCenter, liteJobConfig, new JobEventBus(), elasticJobListeners);
}
public JobScheduler(final CoordinatorRegistryCenter regCenter, final LiteJobConfiguration liteJobConfig, final JobEventConfiguration jobEventConfig,
final ElasticJobListener... elasticJobListeners) {
this(regCenter, liteJobConfig, new JobEventBus(jobEventConfig), elasticJobListeners);
}
private JobScheduler(final CoordinatorRegistryCenter regCenter, final LiteJobConfiguration liteJobConfig, final JobEventBus jobEventBus, final ElasticJobListener... elasticJobListeners) {
JobRegistry.getInstance().addJobInstance(liteJobConfig.getJobName(), new JobInstance());
this.liteJobConfig = liteJobConfig;
this.regCenter = regCenter;
List<ElasticJobListener> elasticJobListenerList = Arrays.asList(elasticJobListeners);
setGuaranteeServiceForElasticJobListeners(regCenter, elasticJobListenerList);
schedulerFacade = new SchedulerFacade(regCenter, liteJobConfig.getJobName(), elasticJobListenerList);
jobFacade = new LiteJobFacade(regCenter, liteJobConfig.getJobName(), Arrays.asList(elasticJobListeners), jobEventBus);
}
private void setGuaranteeServiceForElasticJobListeners(final CoordinatorRegistryCenter regCenter, final List<ElasticJobListener> elasticJobListeners) {
GuaranteeService guaranteeService = new GuaranteeService(regCenter, liteJobConfig.getJobName());
for (ElasticJobListener each : elasticJobListeners) {
if (each instanceof AbstractDistributeOnceElasticJobListener) {
((AbstractDistributeOnceElasticJobListener) each).setGuaranteeService(guaranteeService);
}
}
}
/**
* 初始化作业.
*/
public void init() {
LiteJobConfiguration liteJobConfigFromRegCenter = schedulerFacade.updateJobConfiguration(liteJobConfig);
JobRegistry.getInstance().setCurrentShardingTotalCount(liteJobConfigFromRegCenter.getJobName(), liteJobConfigFromRegCenter.getTypeConfig().getCoreConfig().getShardingTotalCount());
JobScheduleController jobScheduleController = new JobScheduleController(
createScheduler(), createJobDetail(liteJobConfigFromRegCenter.getTypeConfig().getJobClass()), liteJobConfigFromRegCenter.getJobName());
JobRegistry.getInstance().registerJob(liteJobConfigFromRegCenter.getJobName(), jobScheduleController, regCenter);
schedulerFacade.registerStartUpInfo(!liteJobConfigFromRegCenter.isDisabled());
jobScheduleController.scheduleJob(liteJobConfigFromRegCenter.getTypeConfig().getCoreConfig().getCron());
}
private JobDetail createJobDetail(final String jobClass) {
JobDetail result = JobBuilder.newJob(LiteJob.class).withIdentity(liteJobConfig.getJobName()).build();
result.getJobDataMap().put(JOB_FACADE_DATA_MAP_KEY, jobFacade);
Optional<ElasticJob> elasticJobInstance = createElasticJobInstance();
if (elasticJobInstance.isPresent()) {
result.getJobDataMap().put(ELASTIC_JOB_DATA_MAP_KEY, elasticJobInstance.get());
} else if (!jobClass.equals(ScriptJob.class.getCanonicalName())) {
try {
result.getJobDataMap().put(ELASTIC_JOB_DATA_MAP_KEY, Class.forName(jobClass).newInstance());
} catch (final ReflectiveOperationException ex) {
throw new JobConfigurationException("Elastic-Job: Job class '%s' can not initialize.", jobClass);
}
}
return result;
}
protected Optional<ElasticJob> createElasticJobInstance() {
return Optional.absent();
}
private Scheduler createScheduler() {
Scheduler result;
try {
StdSchedulerFactory factory = new StdSchedulerFactory();
factory.initialize(getBaseQuartzProperties());
result = factory.getScheduler();
result.getListenerManager().addTriggerListener(schedulerFacade.newJobTriggerListener());
} catch (final SchedulerException ex) {
throw new JobSystemException(ex);
}
return result;
}
private Properties getBaseQuartzProperties() {
Properties result = new Properties();
result.put("org.quartz.threadPool.class", org.quartz.simpl.SimpleThreadPool.class.getName());
result.put("org.quartz.threadPool.threadCount", "1");
result.put("org.quartz.scheduler.instanceName", liteJobConfig.getJobName());
result.put("org.quartz.jobStore.misfireThreshold", "1");
result.put("org.quartz.plugin.shutdownhook.class", JobShutdownHookPlugin.class.getName());
result.put("org.quartz.plugin.shutdownhook.cleanShutdown", Boolean.TRUE.toString());
return result;
}
}