Swagger with domain path from AWS API Gateway

[Alex-Kostenko]

I can't open swagger in the https://domain.com/v1/api. Locally everything works fine. ( http://localhost:4001/api ). After deployment in the testing link, everything works fine also ( https://e4nub5bjh6.execute.us.amazonaws.com/dev/api ). But not want to work on the prod link: https://domain.com/v1/api

Without path v1 everything work ( https://domain.com/api ).

My code // lambda.ts

const express = require('express');
const pathToSwaggerUi = require('swagger-ui-dist').absolutePath();

const binaryMimeTypes: string[] = [];

function setupSwagger(app: INestApplication) {
  const options = new DocumentBuilder()
    .setTitle(API')
    .setDescription('REST AP')
    .setVersion('1.0.0')
    .addTag('API')
    .build();

  const document = SwaggerModule.createDocument(app, options);
  SwaggerModule.setup('api', app, document);
}

async function bootstrapServer(cachedServer: Server): Promise<Server> {
  if (!cachedServer) {
    const expressApp = express();

    expressApp.use(express.static(pathToSwaggerUi));

    const nestApp = await NestFactory.create(
      AppModule,
      new ExpressAdapter(expressApp),
    );
    nestApp.use((req: Request, res: Response, next: NextFunction) => {
      if (req.originalUrl.includes('favicon')) {
        return res.status(204).end();
      }
      next();
    });
    nestApp.enableCors();
    nestApp.setGlobalPrefix('v1');
    nestApp.useGlobalFilters(new AllExceptionFilter());
    nestApp.useGlobalPipes(new ValidationPipe({ transform: true }));
    useContainer(nestApp.select(AppModule), { fallbackOnErrors: true });

    nestApp.use(eventContext());

    setupSwagger(nestApp);

    await nestApp.init();
    cachedServer = createServer(expressApp, undefined, binaryMimeTypes);
  }
  return cachedServer;
}

export const handler: Handler = async (event: any, context: Context) => {
  if (event.path === '/api') {
    event.path = '/api/';
  }

  event.path = event.path.includes('swagger-ui')
    ? '/api${event.path}'
    : event.path;

  let cachedServer: Server;
  cachedServer = await bootstrapServer(cachedServer);
  return proxy(cachedServer, event, context, 'PROMISE').promise;
};

How can I fix this issue?

[scottie1984]

Can you check the console for the network requests made?