Interceptors with service proxy

[Niks218]

Hi, I've been trying to get it to work for days now. Is there any possibility to make global interceptors work with service proxy?
I have service proxy baked by grpc server like this

export class PaymentServiceProvider implements Provider<BOPaymentMethodServiceService> {
  constructor(
    @inject('datasources.payment')
    protected dataSource: PaymentDataSource = new PaymentDataSource(),
  ) {}

  value(): Promise<BOPaymentMethodServiceService> {
    return getService(this.dataSource);
  }
}

And global interceptor created

@globalInterceptor('', {
  tags: { [ContextTags.GLOBAL_INTERCEPTOR_SOURCE]: ['proxy'] },
})
export class ServiceInterceptor implements Provider<Interceptor> {
  value(): ValueOrPromise<Interceptor> {
    return this.intercept.bind(this);
  }

  intercept<T>(ctx: InvocationContext, next: () => ValueOrPromise<T>): ValueOrPromise<T> {
    console.debug(ctx.source?.value);
    return next();
  }
}

I tried to inject it in controller like @service(PaymentServiceProvider, { asProxyWithInterceptors: true }) and @inject('services.PaymentService', { asProxyWithInterceptors: true }), but nothing works. I noticed, that interceptor works fine with providers, but I can't make it working with service proxy. Also, injecting service with @service decorator also skips interceptor call.

[Niks218]

Okay, turned out, that getService returns DAO object and interceptor requires class, so I made this dirty hack

const Service = class<T = GenericService> {
  constructor(daoObject: T) {
    Object.assign(this, daoObject);
  }
};

export class PaymentServiceProvider implements Provider<BOPaymentMethodServiceService> {
  constructor(
    @inject('datasources.payment')
    protected dataSource: PaymentDataSource = new PaymentDataSource(),
  ) {}

  async value(): Promise<BOPaymentMethodServiceService> {
    return getService(this.dataSource).then(
      service => new Service(service) as BOPaymentMethodServiceService,
    );
  }
}