add validate job status code

[diqksrk]

see #41336

I have added logic to determine the application's state based on the job's status

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[codespearhead]

Does this patch intent to solve #41336 ?

If so, can you link this PR to that issue, so that issue is closed automatically when this PR is merged?

To do that, you just need to add the exact word combination in the PR description:

fix #41336

[scottfrederick]

Thanks for trying to help @codespearhead, but the steps you mention are not necessary. When we're ready, we will manually close the issue as superseded by the PR, and we will ensure that the commit comments contain what's necessary to track back to the PR.

[wilkinsona]

The changes proposed here shouldn't be necessary as JobExecutionExitCodeGenerator should produce an exit code based on the status of an jobs that have been executed:

spring-boot/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/JobExecutionExitCodeGenerator.java

Lines 41 to 49 in 293739b

	@Override
	public int getExitCode() {
	for (JobExecution execution : this.executions) {
	if (execution.getStatus().ordinal() > 0) {
	return execution.getStatus().ordinal();
	}
	}
	return 0;
	}

If you use SpringApplication.exit, as I linked to above, this exit code generator should be involved in deciding the JVM's exit code. I'm going to close this one as I don't think the changes are needed. If you're using System.exit and SpringApplication.exit and it isn't working as expected, a different change to the one proposed here will be needed to fix it. We can figure that out in #41336.