ArgoCD Blueapi pod login fails

[oliwenmandiamond]

When using blueapi from the ArgoCD pod terminal connected to k8 and trying to login, it fails:

ubuntu@i09-k8s-serv-01:/app/.venv/lib$ blueapi login
Traceback (most recent call last):
  File "/app/.venv/lib/python3.11/site-packages/blueapi/cli/cli.py", line 491, in login
    auth: SessionManager = SessionManager.from_cache(config.auth_token_path)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/blueapi/service/authentication.py", line 92, in from_cache
    cache = cache_manager.load_cache()
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/blueapi/service/authentication.py", line 55, in load_cache
    with open(self._file_path, "rb") as cache_file:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/home/ubuntu/.cache/blueapi_cache'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/.venv/bin/blueapi", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/core.py", line 1485, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/core.py", line 1406, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/core.py", line 1873, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/core.py", line 1269, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/core.py", line 824, in invoke
    return callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/click/decorators.py", line 46, in new_func
    return f(get_current_context().obj, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/blueapi/cli/cli.py", line 215, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/blueapi/cli/cli.py", line 501, in login
    auth.start_device_flow()
  File "/app/.venv/lib/python3.11/site-packages/blueapi/service/authentication.py", line 199, in start_device_flow
    assert self._cache_manager.can_access_cache()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/.venv/lib/python3.11/site-packages/blueapi/service/authentication.py", line 74, in can_access_cache
    self._token_path.write_text("")
  File "/python/cpython-3.11.14-linux-x86_64-gnu/lib/python3.11/pathlib.py", line 1078, in write_text
    with self.open(mode='w', encoding=encoding, errors=errors, newline=newline) as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/python/cpython-3.11.14-linux-x86_64-gnu/lib/python3.11/pathlib.py", line 1044, in open
    return io.open(self, mode, buffering, encoding, errors, newline)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/home/ubuntu/.cache/blueapi_cache'
ubuntu@i09-k8s-serv-01:/app/.venv/lib$ 

It fails because the path .cache folder doesn't exist.

ubuntu@i09-k8s-serv-01:~$ ll -a
total 12
drwxr-x---. 2 ubuntu ubuntu   57 Feb 10 14:12 ./
drwxr-xr-x. 3 root   root     20 Feb 10 14:12 ../
-rw-r--r--. 1 ubuntu ubuntu  220 Mar 31  2024 .bash_logout
-rw-r--r--. 1 ubuntu ubuntu 3771 Mar 31  2024 .bashrc
-rw-r--r--. 1 ubuntu ubuntu  807 Mar 31  2024 .profile
ubuntu@i09-k8s-serv-01:~$ 

If I create the .cache folder, it now works!

ubuntu@i09-k8s-serv-01:~$ mkdir .cache
ubuntu@i09-k8s-serv-01:~$ ll -a
total 12
drwxr-x---. 1 ubuntu ubuntu   20 Mar 20 13:53 ./
drwxr-xr-x. 1 root   root     20 Feb 10 14:12 ../
-rw-r--r--. 1 ubuntu ubuntu  220 Mar 31  2024 .bash_logout
-rw-r--r--. 1 ubuntu ubuntu 3771 Mar 31  2024 .bashrc
drwxr-xr-x. 2 ubuntu ubuntu   27 Mar 20 13:53 .cache/
-rw-r--r--. 1 ubuntu ubuntu  807 Mar 31  2024 .profile
ubuntu@i09-k8s-serv-01:~$ blueapi login
Logging in
Please login from this URL:- https://identity.diamond.ac.uk/realms/dls/device?user_code=LNVI-MPUB
Logged in and cached new token

The authentication code in BlueAPI should create the .cache folder if it doesn't already exist.