Subpath is ignored on js resource requests

[vinokurig]

Hello, I am trying to launch quarkus dev-ui application on an endpoint with subpath: https://host.com/subpath. I see the welcome page from the subpath url: https://host.com/subpath/q/dev-ui/welcome but other resources are requested by the url without the subpath, e.g. https://host.com/q/_static/es-module-shims/1.8.3/dist/es-module-shims.js:

If I use the quarkus.http.root-path property set to subpath the welcome page is available by the url with an additional subpath: https://host.com/subpath/subpath/q/dev-ui/welcome, however the js resources are available by the url with a single subpath: https://host.com/subpath/q/_static/es-module-shims/1.8.3/dist/es-module-shims.js. This causes the resource not found page:

[phillip-kruger]

Are you using localhost ? Dev UI only works in localhost. If you are using localhost, please share a reproducer I can look at.

[vinokurig]

@phillip-kruger
I am using Eclipse Che which exposes localhost to a url with subpath (https://host.com/subpath). Let me know If you want me to elaborate more on how to setup an environment to start the quarkus dev-ui application with Eclipse Che.

[phillip-kruger]

Yes please

[vinokurig]

@phillip-kruger
You can use RedHat devspaces, but first you will need to create an account.

1. Start a workspcae from the given url
2. Wait until workspace starts and go to menu -> Terminal -> Run Task...
   
3. Select devfile from the dropdown:
   
4. Select devfile: dev-run from the dropdown:
   
   This will open a terminal and execute the next command: mvn quarkus:dev -Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager
5. Wait a notification about port 8080 is ready, click the Open In New Tab button:
   
6. In the new tab you will see an empty page, please add the correct subpath to the url, so the url should look like: https://devspaces.apps.sandbox-m4.g2pi.p1.openshiftapps.com/<username>/java-quarkus/8080/q/dev-ui/welcome and load the new url.

[phillip-kruger]

@stuartwdouglas @sberyozkin - This also did not work on the old Dev UI. Any suggestions ?

[stuartwdouglas]

I think this is a che issue, I could not reproduce it locally.

[vinokurig]

Hello, did you use subpath while reproducing?

[stuartwdouglas]

Yes, do you have a way to reproduce it outside of che?

[vinokurig]

I do not have another way to reproduce the issue. Could you please describe how did you start the dev-ui locally with a subpath url? That would help a lot to investigate why it does not work with Eclipse Che.

[vinokurig]

I am curious how did you map your localhost to a url with subpath?