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Elastic Job Lite快速入门

1. 使用API配置启动

引入maven依赖

<dependency>
    <groupId>com.dangdang</groupId>
    <artifactId>elastic-job-lite-core</artifactId>
    <version>${latest.release.version}</version>
</dependency>

作业开发

public class MyElasticJob implements SimpleJob {
    
    @Override
    public void execute(ShardingContext context) {
        switch (context.getShardingItem()) {
            case 0: 
                // do something by sharding item 0
                break;
            case 1: 
                // do something by sharding item 1
                break;
            case 2: 
                // do something by sharding item 2
                break;
            // case n: ...
        }
    }
}

作业配置

    // 定义作业核心配置
    JobCoreConfiguration simpleCoreConfig = JobCoreConfiguration.newBuilder("demoSimpleJob", "0/15 * * * * ?", 10).build();
    // 定义SIMPLE类型配置
    SimpleJobConfiguration simpleJobConfig = new SimpleJobConfiguration(simpleCoreConfig, SimpleDemoJob.class.getCanonicalName());
    // 定义Lite作业根配置
    LiteJobConfiguration simpleJobRootConfig = LiteJobConfiguration.newBuilder(simpleJobConfig).build();

启动作业

public class JobDemo {
    
    public static void main(String[] args) {
        new JobScheduler(createRegistryCenter(), createJobConfiguration()).init();
    }
    
    private static CoordinatorRegistryCenter createRegistryCenter() {
        CoordinatorRegistryCenter regCenter = new ZookeeperRegistryCenter(new ZookeeperConfiguration("zk_host:2181", "elastic-job-demo"));
        regCenter.init();
        return regCenter;
    }
    
    private static LiteJobConfiguration createJobConfiguration() {
        // 创建作业配置
        // ...
    }
}

2. 使用Spring配置启动

<dependency>
    <groupId>com.dangdang</groupId>
    <artifactId>elastic-job-lite-spring</artifactId>
    <version>${latest.release.version}</version>
</dependency>

作业开发

同使用API配置中作业开发

作业配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:reg="http://www.dangdang.com/schema/ddframe/reg"
    xmlns:job="http://www.dangdang.com/schema/ddframe/job"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans.xsd
                        http://www.dangdang.com/schema/ddframe/reg
                        http://www.dangdang.com/schema/ddframe/reg/reg.xsd
                        http://www.dangdang.com/schema/ddframe/job
                        http://www.dangdang.com/schema/ddframe/job/job.xsd
                        ">
    <!--配置作业注册中心 -->
    <reg:zookeeper id="regCenter" server-lists=" yourhost:2181" namespace="dd-job" base-sleep-time-milliseconds="1000" max-sleep-time-milliseconds="3000" max-retries="3" />
    
    <!-- 配置作业-->
    <job:simple id="demoSimpleSpringJob" class="xxx.MyElasticJob" registry-center-ref="regCenter" cron="0/10 * * * * ?" sharding-total-count="3" sharding-item-parameters="0=A,1=B,2=C" />
</beans>