[Bug 2080208] Re: ceph-volume AttributeError EntryPoints

[James Page]

** Description changed:

+ [Impact]
+ ceph-volume tool is non-functional in proposed updates for Ubuntu 24.04 (19.2.0~rc2-0ubuntu0.24.04.1).
+ 
+ 
+ [Test Case]
+ sudo apt install ceph-volume
+ sudo ceph-volume -h
+ 
+ 
+ [Where things could go wrong]
+ The upstream proposed fix has not yet been accepted and the patch does increase the code complexity in this area; fix has been tested in PPA prior to upload to reduce risk.
+ 
+ 
+ [Original Bug Report]
  ceph-volume fails with an AttributeError, cf. below.
  
  I believe this might be due to importlib_metadata removing deprecated
  shims:
  
  https://importlib-metadata.readthedocs.io/en/latest/history.html#v5-0-0
  
  ```
  ubuntu at cunning-marmoset:~$ sudo ceph-volume -h
  exception caught by decorator
  Traceback (most recent call last):
-   File "/usr/lib/python3/dist-packages/ceph_volume/decorators.py", line 59, in newfunc
-     return f(*a, **kw)
-            ^^^^^^^^^^^
-   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 118, in main
-     self.enable_plugins()
-   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 83, in enable_plugins
-     plugins = _load_library_extensions()
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^
-   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 188, in _load_library_extensions
-     for ep in get_entry_points(group=group):
-               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 14, in get_entry_points
-     return entry_points().get(group, [])  # type: ignore
-            ^^^^^^^^^^^^^^^^^^
+   File "/usr/lib/python3/dist-packages/ceph_volume/decorators.py", line 59, in newfunc
+     return f(*a, **kw)
+            ^^^^^^^^^^^
+   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 118, in main
+     self.enable_plugins()
+   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 83, in enable_plugins
+     plugins = _load_library_extensions()
+               ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 188, in _load_library_extensions
+     for ep in get_entry_points(group=group):
+               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 14, in get_entry_points
+     return entry_points().get(group, [])  # type: ignore
+            ^^^^^^^^^^^^^^^^^^
  AttributeError: 'EntryPoints' object has no attribute 'get'
  -->  AttributeError: 'EntryPoints' object has no attribute 'get'
  
  ubuntu at cunning-marmoset:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu Oracular Oriole (development branch)
  Release:	24.10
  Codename:	oracular
  
  ubuntu at cunning-marmoset:~$ apt-cache policy ceph-volume
  ceph-volume:
-   Installed: 19.2.0~rc2-0ubuntu1
-   Candidate: 19.2.0~rc2-0ubuntu1
-   Version table:
-  *** 19.2.0~rc2-0ubuntu1 500
-         500 http://archive.ubuntu.com/ubuntu oracular/main amd64 Packages
-         100 /var/lib/dpkg/status
+   Installed: 19.2.0~rc2-0ubuntu1
+   Candidate: 19.2.0~rc2-0ubuntu1
+   Version table:
+  *** 19.2.0~rc2-0ubuntu1 500
+         500 http://archive.ubuntu.com/ubuntu oracular/main amd64 Packages
+         100 /var/lib/dpkg/status
  
  ```

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https://bugs.launchpad.net/bugs/2080208

Title:
  ceph-volume AttributeError EntryPoints

Status in Ceph:
  Unknown
Status in ceph package in Ubuntu:
  Fix Released
Status in ceph source package in Noble:
  Triaged
Status in ceph source package in Oracular:
  Fix Released

Bug description:
  [Impact]
  ceph-volume tool is non-functional in proposed updates for Ubuntu 24.04 (19.2.0~rc2-0ubuntu0.24.04.1).

  
  [Test Case]
  sudo apt install ceph-volume
  sudo ceph-volume -h

  
  [Where things could go wrong]
  The upstream proposed fix has not yet been accepted and the patch does increase the code complexity in this area; fix has been tested in PPA prior to upload to reduce risk.

  
  [Original Bug Report]
  ceph-volume fails with an AttributeError, cf. below.

  I believe this might be due to importlib_metadata removing deprecated
  shims:

  https://importlib-
  metadata.readthedocs.io/en/latest/history.html#v5-0-0

  ```
  ubuntu at cunning-marmoset:~$ sudo ceph-volume -h
  exception caught by decorator
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/ceph_volume/decorators.py", line 59, in newfunc
      return f(*a, **kw)
             ^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 118, in main
      self.enable_plugins()
    File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 83, in enable_plugins
      plugins = _load_library_extensions()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 188, in _load_library_extensions
      for ep in get_entry_points(group=group):
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/ceph_volume/main.py", line 14, in get_entry_points
      return entry_points().get(group, [])  # type: ignore
             ^^^^^^^^^^^^^^^^^^
  AttributeError: 'EntryPoints' object has no attribute 'get'
  -->  AttributeError: 'EntryPoints' object has no attribute 'get'

  ubuntu at cunning-marmoset:~$ lsb_release -a
  No LSB modules are available.
  Distributor ID:	Ubuntu
  Description:	Ubuntu Oracular Oriole (development branch)
  Release:	24.10
  Codename:	oracular

  ubuntu at cunning-marmoset:~$ apt-cache policy ceph-volume
  ceph-volume:
    Installed: 19.2.0~rc2-0ubuntu1
    Candidate: 19.2.0~rc2-0ubuntu1
    Version table:
   *** 19.2.0~rc2-0ubuntu1 500
          500 http://archive.ubuntu.com/ubuntu oracular/main amd64 Packages
          100 /var/lib/dpkg/status

  ```

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