Elastic-Job-Lite分析——作业调度器 JobScheduler 的创建过程

-----------------------------------1. 创建注册中心的对象-------------------------------------------------------------

ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(ZOOKEEPER_CONNECTION_STRING, JOB_NAMESPACE);

CoordinatorRegistryCenter regCenter = new ZookeeperRegistryCenter(zkConfig);

regCenter.init();

-----------------------------------2. 作业事件配置--------------------------------------------------------------------

BasicDataSource dataSource = new BasicDataSource(); //创建数据源

................... //数据源的设置

//作业数据库事件配置

JobEventConfiguration jobEventConfig = new JobEventRdbConfiguration(dataSource);

 

 

 

------------------------------------3.创建作业核心配置--------------------------------------------------------------

//创建简单作业配置构建器.

JobCoreConfiguration.Builder builder = JobCoreConfiguration.newBuilder("javaSimpleJob", "0/5 * * * * ?", 3) ;

//设置分片参数

builder.shardingItemParameters("0=Beijing,1=Shanghai,2=Guangzhou") ;

 

//创建作业核心配置

JobCoreConfiguration coreConfig = builder.build() ;

 

------------------------------------4.创建作业类型配置-------------------------------------------------------------

//创建作业类型配置

SimpleJobConfiguration simpleJobConfig = new SimpleJobConfiguration(coreConfig, JavaSimpleJob.class.getCanonicalName());

 

------------------------------------5.创建 Lite作业配置---------------------------------------------------------------

LiteJobConfiguration.Builder jobBuilder = LiteJobConfiguration.newBuilder(simpleJobConfig) ;

LiteJobConfiguration liteJobConfiguration jobBuilder.build() ;

 

-----------------------------------6.创建调度器-----------------------------------------------------------------------

JobScheduler jobScheduler = new JobScheduler(regCenter, liteJobConfiguration , jobEventConfig) ;

 

-----------------------------------7.启动调度器----------------------------------------------------------------------