Error with registerQueueAsync in NestJs

[GianlucaCesari]

Hello, I'm trying to use BullBoardModule with a very specific case.

Basically,
instead of registering a queue with the default BullModule.registerQueue I'm doing something like this

BullModule.registerQueueAsync({
      imports: [AppModule],
      useFactory: async (appService: AppService) => {
        // Logic to determine the number of logged-in credentials
        const loggedInCount = await appService.onModuleInit();

        // Use loggedInCount to determine concurrency, for example:
        const concurrency = Math.max(1, loggedInCount); // Ensure a minimum concurrency of 1

        return {
          name: 'main_queue',
          processors: [
            {
              concurrency: concurrency,
              path: join(__dirname, 'processors/main_queue.processor.js'),
            },
          ],
        };
      },
      inject: [AppService],
    }),
    BullBoardModule.forFeature({
      name: 'main_queue',
      adapter: BullMQAdapter,
    }),

The problem I think is that BullBoardModule tries to start up before the queue is actually registered throwing this error

            throw new unknown_element_exception_1.UnknownElementException(this.getInstanceNameByToken(token));
                  ^
Error: Nest could not find BullQueue_main_queue element (this provider does not exist in the current context)

Any suggestion on how to fix it? I don't see an async mode, is it not supported?

[felixmosh]

Hi, thank you for reporting this issue,
I'm not an expert with Nest.js... (maybe I should become one)
Bull-board, the core do supports async addition /removal of queues...

I'll happy to get any help here

[felixmosh]

Hi,
I'm not sure if this is possible, but, if you can inject the

@Inject(BULL_BOARD_INSTANCE) private readonly board: BullBoardInstance

you will be able to add queue dynamically, by calling this.board.add() as it done in here