'feast.ui_server' is not a package

[mascai]

Expected Behavior

feast ui command is starting without errors

Current Behavior

feast ui --host 127.0.0.1 --port 8889
/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/feast/ui_server.py:45: DeprecationWarning: 
        on_event is deprecated, use lifespan event handlers instead.

        Read more about it in the
        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
        
  @app.on_event("shutdown")
/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/fastapi/applications.py:4495: DeprecationWarning: 
        on_event is deprecated, use lifespan event handlers instead.

        Read more about it in the
        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).
        
  return self.router.on_event(event_type)
Traceback (most recent call last):
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/bin/feast", line 8, in <module>
    sys.exit(cli())
             ^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/click/decorators.py", line 33, in new_func
    return f(get_current_context(), *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/feast/cli.py", line 172, in ui
    store.serve_ui(
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/feast/feature_store.py", line 2494, in serve_ui
    ui_server.start_server(
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/feast/ui_server.py", line 105, in start_server
    app = get_app(
          ^^^^^^^^
  File "/Users/aamoskalenko/0_root_folder/02_dev/35_feast_ui/venv/lib/python3.11/site-packages/feast/ui_server.py", line 54, in get_app
    ui_dir_ref = importlib_resources.files(__name__) / "ui/build/"
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.11/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/importlib/resources/_common.py", line 22, in files
    return from_package(get_package(package))
                        ^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.11/3.11.9/Frameworks/Python.framework/Versions/3.11/lib/python3.11/importlib/resources/_common.py", line 55, in get_package
    raise TypeError(f'{package!r} is not a package')
TypeError: 'feast.ui_server' is not a package

Steps to reproduce

pip install feast==0.38.0
feast init test_ui # created a project
cd test_ui/feature_repo
feast apply -- OK
feast serve -p 8008 # started feast server 127.0.0.1:8008 -- OK

#in the same folder
feast ui --host 127.0.0.1 --port 8009 # I was trying different ports 8008, 8888 etc -- ERROR

Specifications

• Version: feast==0.38.0 , python3.11
• Platform: MacOs
• Subsystem:

Possible Solution

[privatedumbo]

This happened to me to. The problem is related to importlib_resources.

Problem: this does not work with importlib.resources
Solution: install importlib-resources

To validate this, you can run and it should work. I can PR:

from unittest import mock
import importlib_resources


with mock.patch("feast.ui_server.importlib_resources", new=importlib_resources):
        store = FeatureStore()
        store.serve_ui(
            host=host,
            port=port,
            get_registry_dump=registry_dump,
            registry_ttl_sec=registry_ttl_sec,
            root_path=root_path,
        )

[shuchu]

The importlib of Python involves many changes and deprecations in newer Python versions. I would prefer to modify the code and catch the latest changes in importlib.resources

[privatedumbo]

So you suggest fixing this using the built-in one, instead of installing importlib-resources?

[tokoko]

I think I broke this, sorry about that :). changing importlib_resources.files(__name__) with importlib_resources.files('feast') should be a fix if I'm not mistaken. I was for some reason still not able to start the ui server with the change applied, but it seemed to fix the is not a package error. If anyone can verify it, would be a great help...

[privatedumbo]

v0.38.0
v0.37.1

For what I see, the difference is using the builtin vs the library. Not the package name

[tokoko]

Yes, I made the change in #4109. The difference apparently is that files method in library expects anchor file path as a first parameter, while the same method in built-in expects a package name. I thought there were supposed to be drop-in replacements and missed that...

[privatedumbo]

Yes, should be TBH. I can PR this tomorrow if it helps.
Option A) we re-install the lib
Option B) we fix it using the built-in if possible

WDYT?

[tokoko]

yup, I'd prefer fixing it with built-in if possible. importlib libraries are pretty popular and have caused diamond dependency problems before... so if there's a way to not depend on them, that would be a plus. thanks a lot

[privatedumbo]

Good, agreed. Will come back tomorrow for this. Thanks for the ping-pong 🏓

[shuchu]

So you suggest fixing this using the built-in one, instead of installing importlib-resources?

yes, the Python built-in one is preferred as the discussion concluded.

[privatedumbo]

PR raised here:
#4248

[Annamalaisaravanan]

Follow this Video, This helped me a lot to crack and overcome this error: https://www.youtube.com/watch?v=rBJvW3AjmsM