Function JobHandler

JobHandler<T extends ClassType = ClassType>(
name?: string,
options?: JobHandlerOptions,
): ClassDecorator
Class decorator: mark a class as a job handler.

The class is registered as a container service and contributed to stone.queue.handlers; the QueueServiceProvider resolves it (with dependency injection). With a name, jobs of that name are routed to the class's handle(payload, job) method. Without a name, the class carries one or more @OnJob('...') methods, one job per method.
Type Parameters
- T extends ClassType = ClassType
Parameters
- Optionalname: string
  The job name this class handles (omit when using @OnJob methods).
- options: JobHandlerOptions = {}
  The action method for the whole-class form (defaults to handle).
Returns ClassDecorator
A class decorator.
Example
```
@JobHandler('send-email')
export class SendEmail {
  constructor (private readonly mailer) {}
  async handle (payload: { to: string }) { await this.mailer.send(payload.to) }
}

@JobHandler()
export class Jobs {
  @OnJob('resize') resize (payload) { ... }
  @OnJob('purge')  purge (payload) { ... }
}
```