Spring Batch Job Execution Listener - Access details of sub-jobs defined by JobStep - spring-batch

Question

I have a job(parent job) of jobs(child). In the jobexecution listener of parent job, I want to access all the details(job name, step names, read/write count etc.) of each child jobs. How can I achieve this?
Below is example code. In afterJob method of parentJobExecutionListener, I want to send an email(already have code for it), containing complete details of JOB1 and JOB2. Below code in afterJob method prints details of JOB-STEP1 and JOB-STEP2. How can I access details of child jobs(JOB1 and JOB2) and their steps?
public class ParentJobConfig {
#Bean
public Job job1() {
Job job = jobBuilderFactory.get("JOB1")
.incrementer(new RunIdIncrementer())
.start(step11())
.next(step12())
.build();
return job;
}
#Bean
public Job job2() {
Job job = jobBuilderFactory.get("JOB2")
.incrementer(new RunIdIncrementer())
.start(step21())
.next(step22())
.build();
return job;
}
#Bean
public Step jobStep1() {
Step step = stepBuilderFactory.get("JOB-STEP1")
.job(job1())
.parametersExtractor(new DefaultJobParametersExtractor())
.build();
return step;
}
#Bean
public Step jobStep2() {
Step step = stepBuilderFactory.get("JOB-STEP2")
.job(job2())
.parametersExtractor(new DefaultJobParametersExtractor())
.build();
return step;
}
#Bean
public Job parentJob() {
Job job = jobBuilderFactory.get("PARENT-JOB")
.incrementer(new RunIdIncrementer())
.start(jobStep1())
.next(jobStep2())
.listener(parentJobExecutionListener())
.build();
return job;
}
#Bean
public JobExecutionListener parentJobExecutionListener() {
return new ParentJobExecutionListener ();
}
}
public class ParentJobExecutionListener extends JobExecutionListenerSupport {
#Override
public void afterJob(JobExecution jobExecution) {
List<StepExecution> stepExecutions = (List<StepExecution>) jobExecution.getStepExecutions();
Collection<StepExecution> stepExecutions = jobExecution.getStepExecutions();
for (StepExecution stepExecution : stepExecutions) {
System.out.println("Step Name: " + stepExecution.getStepName());
System.out.println("Read Count: " + stepExecution.getReadCount());
System.out.println("Skip Count: " + stepExecution.getSkipCount());
System.out.println("Write Count: " + stepExecution.getWriteCount());
}
}
}

Answer 1

I don't see an obvious way to get access to the child job executions created here: https://github.com/spring-projects/spring-batch/blob/d8fc58338d3b059b67b5f777adc132d2564d7402/spring-batch-core/src/main/java/org/springframework/batch/core/step/job/JobStep.java#L119 (Only the status is reflected on the step execution).
What you can do is use a job explorer in your listener and query the repository for child job executions.