feat: allow root path to run the app on `/path` #14972

pritamsoni-hsr · 2022-10-02T16:40:02Z

What does this PR do?

allow apps to be served from a custom path when running app behind a proxy.

by default apps are served from https://<app_id>.litng-ai-03.litng.ai, this PR adds a feature so apps can be served from 'https://mydomain.com/<my_app>'.

if you want to build custom UI, make sure all internal links are prefixed with window.app_prefix

this works only behind a proxy and not on the api_id.litng-ai-03.litng.ai/<custom_path> and this is because of uvicorn's root path param.

Limitations

relative links inside the app will break, so user should use window.app_prefix in their JS, there is no warning around that atm.

breaking changes

none

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…i-hsr/lightning into pritam/add-path-prefix

hhsecond · 2022-10-06T14:15:46Z

relative links inside the app will break, so user should use window.app_prefix in their JS, there is no warning around that atm.

Can this be updated in the docs?

hhsecond

Some minor nits and clarification on the docs

src/lightning_app/core/app.py

src/lightning_app/utilities/frontend.py

tchaton

LGTM!
@pritamsoni-hsr Do you think it would make sense to extract those metadata directly into a private file under a .lightning folder?

Borda · 2022-10-06T16:14:41Z

Do you think it would make sense to extract those metadata directly into a private file under a .lightning folder?

let's leave it s separate feature :)

src/lightning_app/core/app.py

src/lightning_app/frontend/web.py

awaelchli · 2022-10-06T22:12:22Z

src/lightning_app/frontend/frontend.py

        """Start the process that serves the UI at the given hostname and port number.

        Arguments:
            host: The hostname where the UI will be served. This gets determined by the dispatcher (e.g., cloud),
                but defaults to localhost when running locally.
            port: The port number where the UI will be served. This gets determined by the dispatcher, which by default
                chooses any free port when running locally.
-
+            root_path: root_path for the server if app in exposed via a proxy at `/<root_path>`


Suggested change

root_path: root_path for the server if app in exposed via a proxy at `/<root_path>`

root_path: root_path for the server if app in exposed via a proxy at `/<root_path>`

You need to leave an empty line

Can we include an example like https://domain.com/<root_path>/my_page to visualize what it means.

tests/tests_app/frontend/test_web.py

Co-authored-by: Adrian Wälchli <[email protected]>

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pritamsoni-hsr · 2022-10-07T13:08:49Z

@tchaton we could, but I think maintaining it in the app is easiest, we can later serialize and deserialize .lightning file

…i-hsr/lightning into pritam/add-path-prefix

* feat: add base path * uvicorn fix arg * Add prefix * update with base_path fix * replace base path with root path * Apply suggestions from code review Co-authored-by: Kaushik B <[email protected]> Co-authored-by: Kaushik B <[email protected]> Co-authored-by: Jirka Borovec <[email protected]> Co-authored-by: Adrian Wälchli <[email protected]> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> (cherry picked from commit 8008055)

* feat: add base path * uvicorn fix arg * Add prefix * update with base_path fix * replace base path with root path * Apply suggestions from code review Co-authored-by: Kaushik B <[email protected]> Co-authored-by: Kaushik B <[email protected]> Co-authored-by: Jirka Borovec <[email protected]> Co-authored-by: Adrian Wälchli <[email protected]> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

github-actions bot added the app (removed) Generic label for Lightning App package label Oct 2, 2022

pritamsoni-hsr added 2 commits October 4, 2022 14:22

feat: add base path

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Merge branch 'master' into pritam/add-path-prefix

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replace base path with root path

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kaushikb11 changed the title ~~feat: add base path~~ feat: add root path Oct 6, 2022

kaushikb11 added 3 commits October 6, 2022 19:06

update frontend utility

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pritamsoni-hsr marked this pull request as ready for review October 6, 2022 14:06

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Merge branch 'master' into pritam/add-path-prefix

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pritamsoni-hsr changed the title ~~feat: add root path~~ feat: allow root path to run the app on /path Oct 6, 2022

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Co-authored-by: Adrian Wälchli <[email protected]>

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feat: allow root path to run the app on `/path` #14972

feat: allow root path to run the app on `/path` #14972

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pritamsoni-hsr commented Oct 2, 2022 •

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pritamsoni-hsr commented Oct 7, 2022

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	root_path: root_path for the server if app in exposed via a proxy at `/<root_path>`
	root_path: root_path for the server if app in exposed via a proxy at `/<root_path>`

feat: allow root path to run the app on /path #14972

feat: allow root path to run the app on /path #14972

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What does this PR do?

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feat: allow root path to run the app on `/path` #14972

feat: allow root path to run the app on `/path` #14972

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