Produits Entr'ouvert » w.c.s.

vu dans #54705#note-37 et reproduit par hasard :

 wcs-manage collectstatic --link
<string>:199: UserWarning: journald will not be used directly, please install python-systemd
Traceback (most recent call last):
  File "/home/cazino/src/eo/wcs/manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/cazino/envs/publik-env-py3/lib/python3.9/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/home/cazino/envs/publik-env-py3/lib/python3.9/site-packages/django/core/management/__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/cazino/envs/publik-env-py3/lib/python3.9/site-packages/django/core/management/base.py", line 323, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/cazino/envs/publik-env-py3/lib/python3.9/site-packages/django/core/management/base.py", line 364, in execute
    output = self.handle(*args, **options)
  File "/home/cazino/src/eo/wcs/wcs/qommon/management/commands/collectstatic.py", line 51, in handle
    return self.collectstatic(pub, clear=options['clear'], link=options['link'])
  File "/home/cazino/src/eo/wcs/wcs/qommon/management/commands/collectstatic.py", line 84, in collectstatic
    os.symlink(src_filename, dst_filename)
FileExistsError: [Errno 17] File exists: '/home/cazino/envs/publik-env-py3/lib/python3.9/site-packages/xstatic/pkg/jquery/data/jquery.min.js' -> '/var/lib/wcs/collectstatic/xstatic/jquery.min.js'

Ça se produit lorsque le lien symbolique existe déjà mais est cassé.

Dans ce cas le os.path.exists(dst_filename) renvoie faux (et c'est normal : https://docs.python.org/3/library/os.path.html#os.path.exists), du coup pas de nettoyage et la création du lien échoue.

if os.path.exists(dst_filename):
    os.unlink(dst_filename)
if link:
    os.symlink(src_filename, dst_filename)