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In an attempt to finally address the longstanding SQLite locking issues, I'm introducing a way to explicitly, lexically scope transactions. The Transaction class is a context manager that always fully fetches after SELECTs and automatically commits on exit. No direct access to the library is allowed, so all changes will eventually be committed and all queries will be completed. This will also provide a debugging mechanism to show where concurrent transactions are beginning and ending. To support composition (transaction reentrancy), an internal, per-Library stack of transactions is maintained. Commits only happen when the outermost transaction exits. This means that, while it's possible to introduce atomicity bugs by invoking Library methods outside of a transaction, you can conveniently call them *without* a currently-active transaction to get a single atomic action. Note that this "transaction stack" concepts assumes a single Library object per thread. Because we need to duplicate Library objects for concurrent access due to sqlite3 limitation already, this is fine for now. Later, the interface should provide one transaction stack per thread for shared Library objects. |
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| .gitignore | ||
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| .travis.yml | ||
| beet | ||
| LICENSE | ||
| MANIFEST.in | ||
| README.rst | ||
| setup.py | ||
Beets is the media library management system for obsessive-compulsive music
geeks.
The purpose of beets is to get your music collection right once and for all.
It catalogs your collection, automatically improving its metadata as it goes.
It then provides a bouquet of tools for manipulating and accessing your music.
Here's an example of beets' brainy tag corrector doing its thing::
$ beet import ~/music/ladytron
Tagging: Ladytron - Witching Hour
(Similarity: 98.4%)
* Last One Standing -> The Last One Standing
* Beauty -> Beauty*2
* White Light Generation -> Whitelightgenerator
* All the Way -> All the Way...
Because beets is designed as a library, it can do almost anything you can
imagine for your music collection. Via `plugins`_, beets becomes a panacea:
- Embed and extract album art from files' metadata.
- Listen to your library with a music player that speaks the `MPD`_ protocol
and works with a staggering variety of interfaces.
- Fetch lyrics for all your songs from databases on the Web.
- Manage your `MusicBrainz music collection`_.
- Analyze music files' metadata from the command line.
- Clean up crufty tags left behind by other, less-awesome tools.
- Browse your music library graphically through a Web browser and play it in any
browser that supports `HTML5 Audio`_.
If beets doesn't do what you want yet, `writing your own plugin`_ is
shockingly simple if you know a little Python.
.. _plugins: http://readthedocs.org/docs/beets/-/plugins/
.. _MPD: http://mpd.wikia.com/
.. _MusicBrainz music collection: http://musicbrainz.org/show/collection/
.. _writing your own plugin:
http://readthedocs.org/docs/beets/-/plugins/#writing-plugins
.. _HTML5 Audio:
http://www.w3.org/TR/html-markup/audio.html
Read More
---------
Learn more about beets at `its Web site`_. Follow `@b33ts`_ on Twitter for
news and updates.
You can install beets by typing ``pip install beets``. (Or, to live on the
cutting edge, type ``pip install beets==dev`` for the `latest source`_.) Check
out the `Getting Started`_ guide to learn more about installing and using beets.
.. _its Web site: http://beets.radbox.org/
.. _Getting Started: http://readthedocs.org/docs/beets/-/guides/main.html
.. _@b33ts: http://twitter.com/b33ts/
.. _latest source: https://github.com/sampsyo/beets/tarball/master#egg=beets-dev
Authors
-------
Beets is by `Adrian Sampson`_.
.. _Adrian Sampson: mailto:adrian@radbox.org