Creating multiple SpringBatch Job - Spring Batch Part2

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Let us consider, you own a corporate gift shop and its Christmas time!! You are accepting bulk orders and offer delivery. Lets see how to solve it using Spring Batch.


There are three steps involved in this process:
  1. Read an order 
  2. Package an order
  3. Ship the order for delivery

Let us create these three steps:
@Bean
public Step readOrderStep() {
   return this.stepBuilderFactory.get("readOrderStep").tasklet(new Tasklet() {
      @Override
      public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
         System.out.println("Order Received");
         return RepeatStatus.FINISHED;
      }
   }).build();
}

@Bean
public Step packageStep() {
   return this.stepBuilderFactory.get("packageStep").tasklet(new Tasklet() {
      @Override
      public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
         System.out.println("Packaging the gift");
         return RepeatStatus.FINISHED;
      }
   }).build();
}

@Bean
public Step deliveryStep() {
   return this.stepBuilderFactory.get("deliveryStep").tasklet(new Tasklet() {
      @Override
      public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
         System.out.println("Package out for delivery");
         return RepeatStatus.FINISHED;
      }
   }).build();
}
In order for our application to run these steps in an order, we use the next method on the JobBuilderFactory

@Bean
public Job packageJob(){
   return this.jobBuilderFactory.get("packageJob").start(readOrderStep())
         .next(packageStep())
         .next(deliveryStep()).build();
}
Lets run the application:


2020-07-16 23:23:28.681  INFO 23732 --- [           main] o.s.b.c.l.support.SimpleJobLauncher      : Job: [SimpleJob: [name=giftShopJob]] launched with the following parameters: [{}]
2020-07-16 23:23:28.742  INFO 23732 --- [           main] o.s.batch.core.job.SimpleStepHandler     : Executing step: [readOrderStep]
Order Received
2020-07-16 23:23:28.774  INFO 23732 --- [           main] o.s.batch.core.step.AbstractStep         : Step: [readOrderStep] executed in 32ms
2020-07-16 23:23:28.787  INFO 23732 --- [           main] o.s.batch.core.job.SimpleStepHandler     : Executing step: [packageStep]
Packaging the gift
2020-07-16 23:23:28.796  INFO 23732 --- [           main] o.s.batch.core.step.AbstractStep         : Step: [packageStep] executed in 9ms
2020-07-16 23:23:28.808  INFO 23732 --- [           main] o.s.batch.core.job.SimpleStepHandler     : Executing step: [deliveryStep]
Package out for delivery
2020-07-16 23:23:28.817  INFO 23732 --- [           main] o.s.batch.core.step.AbstractStep         : Step: [deliveryStep] executed in 9ms
2020-07-16 23:23:28.837  INFO 23732 --- [           main] o.s.b.c.l.support.SimpleJobLauncher      : Job: [SimpleJob: [name=giftShopJob]] completed with the following parameters: [{}] and the following status: [COMPLETED] in 106ms
2020-07-16 23:23:28.843  INFO 23732 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2020-07-16 23:23:28.861  INFO 23732 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

BUILD SUCCESSFUL in 4s
3 actionable tasks: 2 executed, 1 up-to-date
11:23:28 PM: Task execution finished 'SpringbootdemoApplication.main()'.



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