Spring Batch - execute Steps based on decisions issue - spring

Question

I'm developing Spring Batch where I've Steps-1 to Step-10 which runs sequentially. In my case for step-4 to Step-7, I've to make conditional decision based on which I've execute Step-X, Step-Y and , Step-Z etc.
Ex: Step-4 - Precondition, if Step-X gives any status other than error, then execute Step-4, if Step-X failed then execute failedStep() step.
Step-5 - Precondition, if Step-Y gives any status other than error, then execute Step-5, if Step-Y failed then execute failedStep() step.
Step-6 - Precondition, if Step-Z gives any status other than error, then execute Step-6, if Step-z failed then execute failedStep() step and the step-8 to step-10. I'm looking to do all in a single batch job only.
I've developed some code, but it looks like it's not liking the condition.
Error - The method on(String) is undefined for the type Step
#Configuration
public class JobConfig {
#Autowired
private JobBuilderFactory jobs;
#Autowired
private StepBuilderFactory steps;
#Autowired
private JdbcTemplate jdbcTemplate;
#Bean
public Step step1() {
return steps.get("step1")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("Step1");
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step step2() {
return steps.get("step2")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step2");
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step step3() {
return steps.get("step3")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step3");
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step step4() {
return steps.get("step4")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step4");
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step step5() {
return steps.get("step5")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step5");
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step stepX() {
return steps.get("stepX")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step4Check");
// int update = jdbcTemplate.update("Query", "SBC"); // Perform some meaningful DB operations
int update = 1; // To simulate issue locally !
if(update == 1) {
chunkContext.getStepContext().getStepExecution().setExitStatus(new ExitStatus("COMPLETED"));
}else {
chunkContext.getStepContext().getStepExecution().setExitStatus(new ExitStatus("FAILED"));
}
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step stepY() {
return steps.get("stepY")
.tasklet((StepContribution contribution, ChunkContext chunkContext) -> {
System.out.println("step4Check");
// int update = jdbcTemplate.update("Query", "XYZ"); // Perform some meaningful DB operations
int update = 1; // To simulate issue locally !
if(update == 1) {
chunkContext.getStepContext().getStepExecution().setExitStatus(new ExitStatus("COMPLETED"));
}else {
chunkContext.getStepContext().getStepExecution().setExitStatus(new ExitStatus("FAILED"));
}
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Step failedStep() {
return steps.get("failedStep")
.tasklet((contribution, chunkContext) -> {
return RepeatStatus.FINISHED;
})
.build();
}
#Bean
public Job job() {
return jobs.get("job")
.start(step1())
.next(step2())
.next(step3())
.next(stepX().on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepX()).on("*").to(step4())
.from(stepY()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepY()).on("*").to(step5())
.build();
}
}

Answer 1

I was able to solve the issue using following code - This works perfectly fine for me.
Approach-1
#Bean
public Job job() {
return jobs.get("job")
.start(step1())
.next(step2())
.next(step3()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(step3()).on("*").to(stepX())
.from(stepX()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepX()).on("*").to(step4())
.from(step4()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(step4()).on("*").to(stepY())
.from(stepY()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepY()).on("*").to(step5())
.next(step6())
.build()
.build();
}
Approach-2
#Bean
public Job job() {
return jobs.get("job")
.start(step1())
.next(step2())
.next(step3())
.next(stepX()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepX()).on("*").to(step4())
.next(stepY()).on(ExitStatus.FAILED.getExitCode()).to(failedStep())
.from(stepY()).on("*").to(step5())
.next(step6())
.build()
.build();
}