Is this a good practice for module ? | NestJS | Page 1

viral summit Apr 25, 2025, 8:40 AM

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Hello everyone, I'm new to this Discord.

I have a quick question about modules. Is this a good practice to start my consumer here ?

@Module({
  imports: [ContactModule],
  controllers: [SchedulerController],
  providers: [
    SchedulerService,
    {
      provide: 'SqsSchedulerConsumer',
      useFactory: (schedulerService: SchedulerService) => {
        const consumer = new SqsSchedulerConsumer(schedulerService);
        consumer.start(); // Here <<<<<<
        return consumer;
      },
    },
  ],
  exports: [],
})
export class SchedulerModule {}

I tried using OnApplicationBootstrap implementation in my SqsSchedulerConsumer class, but it never gets triggered at startup.
What is the best way to inject and start my SQS consumer ?

Thank you for your help !

arctic sigil Apr 25, 2025, 8:50 AM

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Not a direct answer, but did you see this module?

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Worst case, it's internals can give you an idea what to do.

viral summit Apr 25, 2025, 9:00 AM

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I'm going to see how this works in depth. Thank you !

tough fern Apr 25, 2025, 11:01 AM

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Short answer: no, it is not a good practise to connect to infrastructure directly in constructors and factory functions

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OnApplicationBootstrap should be the place to do it. If it doesn't work for you, maybe you misconfigured something somewhere.

#Is this a good practice for module ?