Spring Batch Metrics

[janossch]

Dear Spring Batch developers,

We are exposing our metrics via the production ready feature of Spring Boot, described here.

We would like to create a monitoring dashboard based on the provided metrics by Spring Batch framework.
Some of our envisioned dashboard tiles would provide an overview of what errors occurring in our batch steps/jobs.
e.g. number of jobs grouped by error causes, or something like what kind of error (and how many) arise in our steps.

However as I have seen so far, all exceptions are wrapped around a single type of exception and the only error type which appears in the metrics is IllegalStateException independetly of the real nature/type of the problem/exception.

References:

spring-batch/spring-batch-core/src/main/java/org/springframework/batch/core/job/AbstractJob.java

Lines 373 to 376 in fe421d0

	private IllegalStateException mergedThrowables(List<Throwable> throwables) {
	return new IllegalStateException(
	throwables.stream().map(Throwable::toString).collect(Collectors.joining("\n")));
	}

example prometheus data for a job:
spring_batch_job_seconds_count{error="IllegalStateException",instance_id="c69a861e-3e74-4bcb-8069-abead0aa5836",spring_batch_job_name="customjob",spring_batch_job_status="FAILED"} 1

spring-batch/spring-batch-core/src/main/java/org/springframework/batch/core/step/AbstractStep.java

Lines 367 to 370 in fe421d0

	private IllegalStateException mergedThrowables(List<Throwable> throwables) {
	return new IllegalStateException(
	throwables.stream().map(Throwable::toString).collect(Collectors.joining("\n")));
	}

example prometheus data for a step:
spring_batch_step_seconds_count{error="IllegalStateException",instance_id="c69a861e-3e74-4bcb-8069-abead0aa5836",spring_batch_step_job_name="store-job",spring_batch_step_name="job-starter-step",spring_batch_step_status="FAILED"} 1

Could you please point me to a direction how to overcome about the above problem or how to get default metrics around errors?
Or can you confirm is this a defect in the implementation?

🙏