Issues with initializing a View

[gsakkis]

I run into two issues when passing a View model to init_beanie:

1. The result of list_collection_names contains "system.views" instead of my view name. This means that the condition if self.recreate_views or cls._settings.name not in collection_names is always True and it always attempt to (re)create the view.

2. I am getting an intermittent, non-deterministic exception from PyMongo: pymongo.errors.OperationFailure: Namespace ... is a view, not a collection. Apparently this happens in a thread so it doesn't stop the overall execution but it's still worrying. Full traceback:

   Future exception was never retrieved
   future: <Future finished exception=OperationFailure("Namespace [...] is a view, not a collection, full error: {'ok': 0.0, 'errmsg': 'Namespace [...] is a view, not a collection', 'code': 166, 'codeName': 'CommandNotSupportedOnView'}")>
   Traceback (most recent call last):
   File ".../lib/python3.10/concurrent/futures/thread.py", line 58, in run
   result = self.fn(*self.args, **self.kwargs)
   File ".../lib/python3.10/site-packages/pymongo/collection.py", line 2173, in drop_indexes
   self.drop_index("*", session=session, **kwargs)
   File ".../lib/python3.10/site-packages/pymongo/_csot.py", line 108, in csot_wrapper
   return func(self, *args, **kwargs)
   File ".../lib/python3.10/site-packages/pymongo/collection.py", line 2235, in drop_index
   self._command(
   File ".../lib/python3.10/site-packages/pymongo/collection.py", line 310, in _command
   return conn.command(
   File ".../lib/python3.10/site-packages/pymongo/helpers.py", line 315, in inner
   return func(*args, **kwargs)
   File ".../lib/python3.10/site-packages/pymongo/pool.py", line 932, in command
   return command(
   File ".../lib/python3.10/site-packages/pymongo/network.py", line 191, in command
   helpers._check_command_response(
   File ".../lib/python3.10/site-packages/pymongo/helpers.py", line 223, in _check_command_response
   raise OperationFailure(errmsg, code, response, max_wire_version)
   pymongo.errors.OperationFailure: Namespace [...] is a view, not a collection, full error: {'ok': 0.0, 'errmsg': 'Namespace [...] is a view, not a collection', 'code': 166, 'codeName': 'CommandNotSupportedOnView'}

[gsakkis]

It turns out both issues were user (my) errors:

• For (1) although list_collection_names does include system.views, it also includes the view name as well (if it exists). As I was trying out things I was deleting the view and thought that list_collection_names showed system.views instead of (rather than in addition to) the view name.
• For (2) I was calling drop_indexes on all models without checking if it's a Document or a View. It's still strange that the error was non deterministic but regardless, drop_indexes shouldn't be called on views.