guoyuepeng commented on PR #667:
URL: https://github.com/apache/griffin/pull/667#issuecomment-2410586185
@toyboxman
the following is the poc, based on which i am designing the local workflow.
`package demo.workflows;
import org.springframework.batch.core.job.builder.FlowBuilder;
import org.springframework.batch.core.job.flow.Flow;
import org.springframework.core.task.SimpleAsyncTaskExecutor;
import org.springframework.stereotype.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.StepContribution;
import org.springframework.batch.core.job.builder.JobBuilder;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.core.step.builder.StepBuilder;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.transaction.PlatformTransactionManager;
@Component
public class DQCompareFlow {
@Autowired
public JobRepository jobRepository;
@Autowired
public PlatformTransactionManager transactionManager;
Logger logger = LoggerFactory.getLogger(DQCompareFlow.class);
@Bean
public Job dqcFlow() {
return new JobBuilder("DQC_JOB", this.jobRepository)
.start(new StepBuilder("setup",
this.jobRepository).tasklet(new Tasklet() {
@Override
public RepeatStatus execute(StepContribution
contribution, ChunkContext chunkContext) throws Exception {
logger.info("PrepareJob was run");
return RepeatStatus.FINISHED;
}
}, transactionManager).build())
.split(new SimpleAsyncTaskExecutor()).add(
new FlowBuilder<Flow>("fetchSourceCount")
.start(new StepBuilder("fetchSourceStep",
this.jobRepository).tasklet(new Tasklet() {
@Override
public RepeatStatus
execute(StepContribution contribution, ChunkContext chunkContext) throws
Exception {
logger.info("FetchSourceStep
started");
Thread.sleep(90000); // Sleep for 90
seconds
logger.info("FetchSourceStep was
run");
return RepeatStatus.FINISHED;
}
}, transactionManager).build())
.build(),
new FlowBuilder<Flow>("fetchTargetCount")
.start(new StepBuilder("fetchTargetStep",
this.jobRepository).tasklet(new Tasklet() {
@Override
public RepeatStatus
execute(StepContribution contribution, ChunkContext chunkContext) throws
Exception {
logger.info("FetchTargetStep was
run");
return RepeatStatus.FINISHED;
}
}, transactionManager).build())
.build()
)
.next(new StepBuilder("compareResult",
this.jobRepository).tasklet(new Tasklet() {
@Override
public RepeatStatus execute(StepContribution
contribution, ChunkContext chunkContext) throws Exception {
logger.info("CompareStep was run");
return RepeatStatus.FINISHED;
}
}, transactionManager).build())
.end() // Add this line to end the job definition
.build(); // Add this line to build the Job object
}
}
`
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