定时任务elastic-job

男娘i 2022-03-19 20:30 274阅读 0赞

目前提供`3`种作业类型，分别是`Simple`, `DataFlow`和`Script`。

Simple:

@Slf4j
    @Service
    public class SimpleJobTest implements SimpleJob {
        
        @Override
        public void execute(ShardingContext shardingContext) {
            //执行分片任务
            long startTime = System.currentTimeMillis();
            log.info("定时任务job:{}启动",shardingContext.getJobName());
    
            //查询特定时间段内活动结束的批次账户
            Date startDate = DateUtil.calBeginTimeForDay(-361L);
            Date endDate = DateUtil.calEndTimeForDay(-361L);
            batchCloseBiz.close(startDate,endDate);
    
            log.info("定时任务job:{}结束,耗时{}ms", shardingContext.getJobName(),System.currentTimeMillis() - startTime);
        }
    }

DataFlow:

@Slf4j
    @Component
    public class SimpleJobTest implements DataflowJob<String>{
    
    
        @Override
        public List<String> fetchData(ShardingContext shardingContext) {
            // 当前机器的分片编号
            int shardingItem = shardingContext.getShardingItem();
            // 定时器总的分片数
            int shardingTotalCount = shardingContext.getShardingTotalCount();
            //从数据库获取分片数据 
            List<UserDao> userDaoList= "sql语句获取数据待处理的数据集";
            // 查看是否是需要本台机器处理的分片数据
            userDaoList.stream().filter(userDao->
                    ShardingKit.getShrading(limitDetailBO.getId().toString(), shardingTotalCount) == shardingItem )
            return date;
        }
    
        @Override
        public void processData(ShardingContext shardingContext, List<String> data) {
             //分片数据处理
        }
    }
    
    /**
    * 对id进去取模
    * @param modKey  业务BO的取模字段
    * @param shardKey  定时任务分片数
    * @return
    */
    public static Integer getShrading(String modKey,int shardKey){
         return modKey.hashCode() & (shardKey - 1);
    }

Script: