Package edu.ucsb.cs156.frontiers.services.jobs

Class JobService

java.lang.Object

edu.ucsb.cs156.frontiers.services.jobs.JobService

@Service
public class JobService
extends Object

Constructor Summary

Constructors

Constructor	Description
JobService()

Method Summary

Modifier and Type	Method	Description
String	getJobLogs(Long jobId)
Job	runAsJob(JobContextConsumer jobFunction)
void	runJobAsync(Job job, JobContextConsumer jobFunction)	Runs a job asynchronously.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JobService

public JobService()

Method Details

runAsJob

public Job runAsJob(JobContextConsumer jobFunction)

runJobAsync

@Async
public void runJobAsync(Job job,
 JobContextConsumer jobFunction)

Runs a job asynchronously.

This method uses a TransactionTemplate because outside of the Spring context, you cannot delete entities that are unmanaged by Hibernate. Using the transactionTemplate lambda keeps the database session open and allows Hibernate to maintain it's knowledge of the object graph (i.e. the entities)

To learn more, read about Hibernate and the concept of a Spring Context.

Note that using the transactionTemplate lambda means that if there is an unhandled exception, either every database transactions succeeds, or all of them are rolled back.

However, the job entity metadata will still be saved.

Parameters:

job - metadata entity about the job

jobFunction - runnable job function

getJobLogs

public String getJobLogs(Long jobId)