redirect to controller inside middleware using fastify

[fleet harbor]

Hi is there a way to redirect to a controller inside a middleware using fastify/middie ? I didnt found a good solution when googleing middie redirect.

[analog grove]

Not really. middie exposes the IncomingMessage and ServerResponse objects, but disables some of the methods like res.write and res.redirect etc. This is all just due to how fastify works

[fleet harbor]

mhh I see. I need to protect some api routes with a middleware that redirects to to the oAuth route on some conditions. Maybe the best aproach is to export this logic into a microservice that uses express

[analog grove]

Why not throw an exception, catch it in a filter, and redirect from there?

[fleet harbor]

oh thats a smart and simple solution

[fleet harbor]

could you take a quik look at this ? My filter doesnt get executed and I dont see the mistake I made.

@UseFilters(ShopifyMiddlewareException)
  async use(@Req() req: Request, @Res() res: Response, next: () => void) {
    return await this.validateAuthenticatedSession(req, res, next);
  }

in my validateAuthenticaredSesssion:

 next(new UnauthorizedException());

My filter:

@Catch(UnauthorizedException)
@Injectable()
export class ShopifyMiddlewareException implements ExceptionFilter {
    async catch(exception: HttpException, host: ArgumentsHost) {
      Logger.log("ShopifyMiddlewareException");
        const ctx = host.switchToHttp();
        const response = ctx.getResponse<Response>();
        const status = exception.getStatus();
        const shop = response.getHeader("content-security-policy");
        Logger.debug(response.getHeaders());
        if (TypeHelper.isString(shop)) {
            const shopAsString: string = TypeHelper.parseString(shop).split("https://")[1].replace(/\s/g, "");

            response.status(301).redirect(`/api/auth/?shop=${shopAsString}`);
        }
    }
}