Using the proxy on a dynamically namespaced route

[sslotsky]

Is this a question?

Yes!

I made a StackOverflow post for this question but it's been over 2 weeks now with no response, so I'm hoping I can get some help here.

I have some dynamic route namespaces defined by a config file. A config entry looks like this:

  catalog:
    name: catalog
    address: https://catalog.foo.co
    type: page
    version: v1

When the browser makes a request to /catalog/assets/styles.css, the proxy should send that request to https://catalog.foo.co/v1/assets/styles.css. I've tried multiple ways to configure the proxy, as shown in the SO post, but none of them work. I see no evidence that the requests are even reaching the proxy code, since I've added hooks like the one below without observing any console output:

      onProxyReq: (proxyReq, req, res) => {
        console.log("Hello I'm being proxied now! ", proxyReq, req, res);
      },

The server just responds with a 302. The proxy works fine for other routes I've defined, but I can't figure this one out.

I do have this proxy working using the request library with this code:

  const assets = express.Router();
  app.use(`/${p.name}/assets`, assets);
  assets.get('*', async (req, res) => {
    return request(`${p.address}/${p.version}/assets${req.path}`).pipe(res);
  });

I'm just not sure how to correctly adapt it to use the http-proxy-middleware. Help is appreciated, thanks!