+++ pre = “2.2. ” title = “ElasticJob-Cloud” weight = 2 chapter = true +++

引入 Maven 依赖

<dependency>
    <groupId>org.apache.shardingsphere.elasticjob</groupId>
    <artifactId>elasticjob-cloud-executor</artifactId>
    <version>${latest.release.version}</version>
</dependency>

作业开发

public class MyJob 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: ...
        }
    }
}

作业启动

需定义 main 方法并调用 JobBootstrap.execute()，例子如下：

public class MyJobDemo {
    
    public static void main(final String[] args) {
        JobBootstrap.execute(new MyJob());
    }
}

作业打包

tar -cvf my-job.tar.gz my-job

API 鉴权

curl -H "Content-Type: application/json" -X POST http://elasticjob_cloud_host:8899/api/login -d '{"username": "root", "password": "pwd"}'

响应体：

{"accessToken":"some_token"}

作业发布

curl -l -H "Content-type: application/json" -H "accessToken: some_token" -X POST -d '{"appName":"my_app","appURL":"http://app_host:8080/my-job.tar.gz","cpuCount":0.1,"memoryMB":64.0,"bootstrapScript":"bin/start.sh","appCacheEnable":true,"eventTraceSamplingCount":0}' http://elasticjob_cloud_host:8899/api/app

作业调度

curl -l -H "Content-type: application/json" -H "accessToken: some_token" -X POST -d '{"jobName":"my_job","appName":"my_app","jobExecutionType":"TRANSIENT","cron":"0/5 * * * * ?","shardingTotalCount":3,"cpuCount":0.1,"memoryMB":64.0}' http://elasticjob_cloud_host:8899/api/job/register