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in this patch the asyncio/events.py module, which
existed only to raise errors when trying to attach event
listeners, is removed, as we were already coding an asyncio-specific
workaround in upstream Pool / Session to raise this error,
just moved the error out to the target and did the same thing
for Engine.
We also add an async_sessionmaker class. The initial rationale
here is because sessionmaker() is hardcoded to Session subclasses,
and there's not a way to get the use case of
sessionmaker(class_=AsyncSession) to type correctly without changing
the sessionmaker() symbol itself to be a function and not a class,
which gets too complicated for what this is. Additionally,
_SessionClassMethods has only three methods on it, one of which
is not usable with asyncio (close_all()), the others
not generally used from the session class.
Change-Id: I064a5fa5d91cc8d5bbe9597437536e37b4e801fe
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Fixed issues where a descriptive error message was not raised for some
classes of event listening with an async engine, which should instead be a
sync engine instance.
Change-Id: I00b9f4fe9373ef5fd5464fac10651cc4024f648e
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Change-Id: I49abf2607e0eb0623650efdf0091b1fb3db737ea
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Also replace http://pypi.python.org/pypi with https://pypi.org/project
Change-Id: I84b5005c39969a82140706472989f2a30b0c7685
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Change-Id: I6028b70bba76d6d9e1042762423d61f83644c085
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Reworked the proxy creation used by scoped_session() to be
based on fully copied code with augmented docstrings and
moved it into langhelpers. asyncio session, engine,
connection can now take
advantage of it so that all non-async methods are availble.
Overall implementation of most important accessors / methods
on AsyncConnection, etc. , including awaitable versions
of invalidate, execution_options, etc.
In order to support an event dispatcher on the async
classes while still allowing them to hold __slots__,
make some adjustments to the event system to allow
that to be present, at least rudimentally.
Fixes: #5628
Change-Id: I5eb6929fc1e4fdac99e4b767dcfd49672d56e2b2
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