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path: root/lib/sqlalchemy/ext/asyncio/session.py
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* Replace all http:// links to https://Federico Caselli2021-07-041-1/+1
| | | | | | Also replace http://pypi.python.org/pypi with https://pypi.org/project Change-Id: I84b5005c39969a82140706472989f2a30b0c7685
* Implement proxy back reference system for asyncioMike Bayer2021-06-021-18/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | Implemented a new registry architecture that allows the ``Async`` version of an object, like ``AsyncSession``, ``AsyncConnection``, etc., to be locatable given the proxied "sync" object, i.e. ``Session``, ``Connection``. Previously, to the degree such lookup functions were used, an ``Async`` object would be re-created each time, which was less than ideal as the identity and state of the "async" object would not be preserved across calls. From there, new helper functions :func:`_asyncio.async_object_session`, :func:`_asyncio.async_session` as well as a new :class:`_orm.InstanceState` attribute :attr:`_orm.InstanceState.asyncio_session` have been added, which are used to retrieve the original :class:`_asyncio.AsyncSession` associated with an ORM mapped object, a :class:`_orm.Session` associated with an :class:`_asyncio.AsyncSession`, and an :class:`_asyncio.AsyncSession` associated with an :class:`_orm.InstanceState`, respectively. This patch also implements new methods :meth:`_asyncio.AsyncSession.in_nested_transaction`, :meth:`_asyncio.AsyncSession.get_transaction`, :meth:`_asyncio.AsyncSession.get_nested_transaction`. Fixes: #6319 Change-Id: Ia452a7e7ce9bad3ff8846c7dea8d45c839ac9fac
* Clarify close for sync / async sessionMike Bayer2021-05-241-1/+27
| | | | | | | | | Add seealso links from Session.close() and AsyncSession.close() to narrative description, clarify in both places what the method does and does not do. Change-Id: Ib804753a86b4761e5f198c52121e8433c851cbc4 References: #6528
* Remove pep484 type comments from the codeFederico Caselli2021-05-161-30/+12
| | | | | | | | | | | | | Current effort is around the stub package, and having typing in two places makes thing worse, since the types here are usually outdated compared to the version in the stubs. Once v2 gets under way we can start consolidating the types here. Fixes: #6461 Change-Id: I7132a444bd7138123074bf5bc664b4bb119a85ce
* unify transactional context managersMike Bayer2021-05-051-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Applied consistent behavior to the use case of calling ``.commit()`` or ``.rollback()`` inside of an existing ``.begin()`` context manager, with the addition of potentially emitting SQL within the block subsequent to the commit or rollback. This change continues upon the change first added in :ticket:`6155` where the use case of calling "rollback" inside of a ``.begin()`` contextmanager block was proposed: * calling ``.commit()`` or ``.rollback()`` will now be allowed without error or warning within all scopes, including that of legacy and future :class:`_engine.Engine`, ORM :class:`_orm.Session`, asyncio :class:`.AsyncEngine`. Previously, the :class:`_orm.Session` disallowed this. * The remaining scope of the context manager is then closed; when the block ends, a check is emitted to see if the transaction was already ended, and if so the block returns without action. * It will now raise **an error** if subsequent SQL of any kind is emitted within the block, **after** ``.commit()`` or ``.rollback()`` is called. The block should be closed as the state of the executable object would otherwise be undefined in this state. Fixes: #6288 Change-Id: I8b21766ae430f0fa1ac5ef689f4c0fb19fc84336
* Fix typo that prevented setting the ``bind``Federico Caselli2021-04-101-1/+1
| | | | | | | attribute of an :class:`_asyncio.AsyncSession` to the correct value. Fixes: #6220 Change-Id: I91021351b8076e4aa4139af4b2cf359b3c0404af
* add missing copyright to asyncio filesMike Bayer2021-03-021-0/+7
| | | | Change-Id: I6028b70bba76d6d9e1042762423d61f83644c085
* convert AsyncSession.delete into awaitableMike Bayer2021-03-021-1/+12
| | | | | | | | | The API for :meth:`_asyncio.AsyncSession.delete` is now an awaitable; this method cascades along relationships which must be loaded in a similar manner as the :meth:`_asyncio.AsyncSession.merge` method. Fixes: #5998 Change-Id: Iae001efe99a1dcc47598b4a2491d17c4157fbbfa
* Improve ``run_sync`` documentation in asyncio extFederico Caselli2021-01-071-0/+10
| | | | | Change-Id: I202458ab6d81e29053118c9fb9c205b865c8d2ba Ref: #5817
* Implement connection binding for AsyncSessionMike Bayer2021-01-071-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Implemented "connection-binding" for :class:`.AsyncSession`, the ability to pass an :class:`.AsyncConnection` to create an :class:`.AsyncSession`. Previously, this use case was not implemented and would use the associated engine when the connection were passed. This fixes the issue where the "join a session to an external transaction" use case would not work correctly for the :class:`.AsyncSession`. Additionally, added methods :meth:`.AsyncConnection.in_transaction`, :meth:`.AsyncConnection.in_nested_transaction`, :meth:`.AsyncConnection.get_transaction`. The :class:`.AsyncEngine`, :class:`.AsyncConnection` and :class:`.AsyncTransaction` objects may be compared using Python ``==`` or ``!=``, which will compare the two given objects based on the "sync" object they are proxying towards. This is useful as there are cases particularly for :class:`.AsyncTransaction` where multiple instances of :class:`.AsyncTransaction` can be proxying towards the same sync :class:`_engine.Transaction`, and are actually equivalent. The :meth:`.AsyncConnection.get_transaction` method will currently return a new proxying :class:`.AsyncTransaction` each time as the :class:`.AsyncTransaction` is not otherwise statefully associated with its originating :class:`.AsyncConnection`. Fixes: #5811 Change-Id: I5a3a6b2f088541eee7b0e0f393510e61bc9f986b
* Add support for AsyncSession.get()Mike Bayer2020-12-271-0/+24
| | | | | Fixes: #5802 Change-Id: If59dbac4d4638563b7dcbc7bb2cb0df0a0144a2e
* implement sessionmaker.begin(), scalar() for async sessionMike Bayer2020-12-261-0/+39
| | | | | | | | | | | Added :meth:`_asyncio.AsyncSession.scalar` as well as support for :meth:`_orm.sessionmaker.begin` to work as an async context manager with :class:`_asyncio.AsyncSession`. Also added :meth:`_asyncio.AsyncSession.in_transaction` accessor. Fixes: #5796 Fixes: #5797 Change-Id: Id3d431421df0f8c38f356469a50a946ba9c38513
* Improved PEP-484 for AsyncSession.run_syncMichael Oliver2020-12-161-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <!-- Provide a general summary of your proposed changes in the Title field above --> ### Description <!-- Describe your changes in detail --> I don't think this needs any test added. ### Checklist <!-- go over following points. check them with an `x` if they do apply, (they turn into clickable checkboxes once the PR is submitted, so no need to do everything at once) --> This pull request is: - [ ] A documentation / typographical error fix - Good to go, no issue or tests are needed - [x] A short code fix - please include the issue number, and create an issue if none exists, which must include a complete example of the issue. one line code fixes without an issue and demonstration will not be accepted. - Please include: `Fixes: #<issue number>` in the commit message - please include tests. one line code fixes without tests will not be accepted. - [ ] A new feature implementation - please include the issue number, and create an issue if none exists, which must include a complete example of how the feature would look. - Please include: `Fixes: #<issue number>` in the commit message - please include tests. Fixes: #5777 **Have a nice day!** Closes: #5778 Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5778 Pull-request-sha: 618ddc84d27b9b67f9ae78fd457f94feff1ce160 Change-Id: Id46f70ddc14e8f8d7e402a4b3ce7e934509bef24
* generalize scoped_session proxying and apply to asyncio elementsMike Bayer2020-10-101-35/+62
| | | | | | | | | | | | | | | | | | | | 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
* upgrade to black 20.8b1Mike Bayer2020-09-281-3/+1
| | | | | | | It's better, the majority of these changes look more readable to me. also found some docstrings that had formatting / quoting issues. Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b
* Implement rudimentary asyncio support w/ asyncpgMike Bayer2020-08-131-0/+293
Using the approach introduced at https://gist.github.com/zzzeek/6287e28054d3baddc07fa21a7227904e We can now create asyncio endpoints that are then handled in "implicit IO" form within the majority of the Core internals. Then coroutines are re-exposed at the point at which we call into asyncpg methods. Patch includes: * asyncpg dialect * asyncio package * engine, result, ORM session classes * new test fixtures, tests * some work with pep-484 and a short plugin for the pyannotate package, which seems to have so-so results Change-Id: Idbcc0eff72c4cad572914acdd6f40ddb1aef1a7d Fixes: #3414
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