I tried implementing spring batch retry as mentioned in this problem and i was successful in implementing it. I wanted to implement the same with calling jobLauncher.run outside the doWithRetry function. This is so that anytime I can use the RetryTemplate
without containing the JobExecution
. If that is possible, how can I achieve that?
Currently my source code looks like this-
@Configuration
@EnableBatchProcessing
public class RetryBatchJob {
@Autowired
private JobBuilderFactory jobs;
@Autowired
private StepBuilderFactory steps;
@Bean
public ItemReader<Integer> itemReader() {
return new ListItemReader<>(Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
}
@Bean
public ItemWriter<Integer> itemWriter() {
return items -> {
for (Integer item : items) {
System.out.println("item = " + item);
if (item.equals(7)) {
throw new Exception("Sevens are sometime nasty, let's retry them");
}
}
};
}
@Bean
public Step step() {
return steps.get("step")
.<Integer, Integer>chunk(2)
.reader(itemReader())
.writer(itemWriter())
.build();
}
@Bean
public RetryTemplate retryTemplate() {
RetryTemplate retryTemplate = new RetryTemplate();
SimpleRetryPolicy retryPolicy = new SimpleRetryPolicy(5, singletonMap(Exception.class, true));
retryPolicy.setMaxAttempts(5);
retryTemplate.setRetryPolicy(retryPolicy);
return retryTemplate;
}
public static void main(String[] args) throws Exception {
ApplicationContext context = new AnnotationConfigApplicationContext(RetryBatchJob.class);
JobLauncher jobLauncher = context.getBean(JobLauncher.class);
Job job = context.getBean(Job.class);
RetryTemplate retryTemplate = context.getBean(RetryTemplate.class);
retryTemplate.execute(new RetryCallback<JobExecution, Exception>() {
@Override
public JobExecution doWithRetry(RetryContext context) throws Exception {
JobExecution exe = jobLauncher.run(job, new JobParameters());
if(exe.getStatus().equals(BatchStatus.FAILED))
throw new RuntimeException(exe.toString());
return exe;
};
});
}
}