Spring Batch Java Config: Skip step when exception and go to next steps

Question

e.g. i have 3 Steps in Job (similar to Step1):

@Autowired
private StepBuilderFactory stepBuilderFactory;

@Bean
public Step step1() {
    return stepBuilderFactory
            .get("step1")
            .<String, String> chunk(1)
            .reader(reader())
            .processor(processor())
            .writer(writer())
            .build();
}

How go to Step 2 and 3 even after exception in Step 1? I mean configuration in Java.

May be you want to try `StepExecutionListener`. Its `afterStep` is useful in step flow handling. — Minh, Aug 25 '16 at 03:56

score 7 · Accepted Answer · answered Aug 25 '16 at 11:12

7

Here is an example on how to configure it when creating a flow. That should be similar to configure it directly with the job builder:

return new FlowBuilder<SimpleFlow>("name")
    .start(step1) //
    .next(step2).on(ExitStatus.FAILED.getExitCode()).to(errorStep)
    .from(step2).on(ALL_PATTERN).to(step3)
    .build();

answered Aug 25 '16 at 11:12

Hansjoerg Wingeier

4,274
4
17
25

1

In my case, independently or one exception was thrown or not (in step 2), i need always go to step 3. I will use something like: - from step2 on FAIL to step3 - from step2 on * to step3 – Artur Aug 29 '16 at 00:41
Where's `ALL_PATTERN` defined? – Abhijit Sarkar Sep 29 '18 at 22:33
It's just a "*". – Hansjoerg Wingeier Sep 29 '18 at 22:39

A0__oN · Answer 2 · 2016-08-25T06:34:27.407

You can use Skip Listener

@Component
public class CustomSkipListener {

    @OnSkipInRead
    public void onSkipInRead(Throwable t) {
        System.out.println("From onSkipInRead -> " + t.getMessage());
    }

    @OnSkipInWrite
    public void onSkipInWrite(String item, Throwable t) {
        System.out.println("From onSkipInWrite: " + item + " -> " + t.getMessage());
    }

    @OnSkipInProcess
    public void onSkipInProcess(String item, Throwable t) {
        System.out.println("From onSkipInProcess: " + string + " -> " + t.getMessage());
    }
}

Then in your step

@Bean
public Step step1(CustomSkipListener customSkipListener) {
    return stepBuilderFactory
            .get("step1")
            .<String, String> chunk(1)
            .reader(reader())
            .processor(processor())
            .writer(writer())
            .faultTolerant()
            .skipLimit(10)
            .skip(RuntimeException.class)
            .listener(customSkipListener)
            .build();
}

Notice the CHAIN starting from .faultTolerant(). Adding the listener is not mandatory. If you add the listener you can handle the behaviour when skipping happens.

Some helpful links

http://docs.spring.io/spring-batch/apidocs/org/springframework/batch/core/SkipListener.html

http://docs.spring.io/spring-batch/reference/html/configureStep.html#configuringSkip

score 0 · Answer 3 · answered Aug 24 '16 at 23:58

0

You can use StepBuilder.faultTolerant method and configuring xml in this fashion.

<batch:skippable-exception-classes>
                    <batch:include class="MyException"/>
</batch:skippable-exception-classes>

This would help in your case.

Please look at this : http://docs.spring.io/spring-batch/trunk/apidocs/org/springframework/batch/core/step/builder/SimpleStepBuilder.html#faultTolerant--

answered Aug 24 '16 at 23:58

Rishi

1,163
7
12

I have used: SkipPolicy and RetryPolicy but after exception Step execution is complete with 'COMPLETE' status. I expect: 1. Step1: when ex than exitStatus: FAILED, otherwise: COMPLETED 2. (no matter that an exception or not in Step1) Step2 3.(no matter that an exception or not in Step1, Step2) Step3` – Artur Aug 25 '16 at 00:18
Read this link :https://blog.codecentric.de/en/2012/03/transactions-in-spring-batch-part-3-skip-and-retry/ – Rishi Aug 25 '16 at 00:22

Spring Batch Java Config: Skip step when exception and go to next steps

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