celery/Changelog

==============
Change history
==============

0.1.12 :date:`2009-05-18 04:38 P.M CET` :author:askh@opera.com

    * delay_task() etc. now returns :class:`celery.task.AsyncResult` object,
    which lets you check the result and any failure that might have happened.
    It kind of works like the ``multiprocessing.AsyncResult`` class returned
    by ``multiprocessing.Pool.map_async``.

    * Added dmap() and dmap_async(). This works like the
    * ``multiprocessing.Pool`` versions except they are tasks distributed
    to the celery server. Example:

        >>> from celery.task import dmap
        >>> import operator
        >>> dmap(operator.add, [[2, 2], [4, 4], [8, 8]])
        >>> [4, 8, 16]
        
        >>> from celery.task import dmap_async
        >>> import operator
        >>> result = dmap_async(operator.add, [[2, 2], [4, 4], [8, 8]])
        >>> result.ready()
        False
        >>> time.sleep(1)
        >>> result.ready()
        True
        >>> result.result
        [4, 8, 16]

    * Refactored the task metadata cache and database backends, and added
    a new backend for Tokyo Tyrant. You can set the backend in your django
    settings file. e.g

        CELERY_BACKEND = "database"; # Uses the database

        CELERY_BACKEND = "cache"; # Uses the django cache framework

        CELERY_BACKEND = "tyrant"; # Uses Tokyo Tyrant
        TT_HOST = "localhost"; # Hostname for the Tokyo Tyrant server.
        TT_PORT = 6657; # Port of the Tokyo Tyrant server.

0.1.11 :date:`2009-05-12 02:08 P.M CET` :author:askh@opera.com

	* The logging system was leaking file descriptors, resulting in servers
	stopping with the EMFILES (too many open files) error. (fixed)

0.1.10 :date:`2009-05-11 12:46 P.M CET` :author:askh@opera.com

	* Tasks now supports both positional arguments and keyword arguments.

	* Requires carrot 0.3.8.

	* The daemon now tries to reconnect if the connection is lost.

0.1.8 :date:`2009-05-07 12:27 P.M CET` :author:askh@opera.com

	* Better test coverage
	* More documentation
	* celeryd doesn't emit "Queue is empty" message if
	  :setting:`CELERYD_EMPTY_MSG_EMIT_EVERY` is 0.

0.1.7 :date:`2009-04-30 1:50 P.M CET` :author:askh@opera.com

	* Added some unittests

	* Can now use the database for task metadata (like if the task
	has been executed or not). Set :setting:`CELERY_TASK_META`

	* Can now run ``python setup.py test`` to run the unittests from within
	the ``testproj`` project.

	* Can set the AMQP exchange/routing key/queue using
	:setting:`CELERY_AMQP_EXCHANGE`, :setting:`CELERY_AMQP_ROUTING_KEY`,
	and :setting:`CELERY_AMQP_CONSUMER_QUEUE`.

0.1.6 :date:`2009-04-28 2:13 P.M CET` :author:askh@opera.com

	* Introducing ``TaskSet``. A set of subtasks is executed and you can find
	out how many, or if all them, are done (excellent for progress bars and
	such)

	* Now catches all exceptions when running ``Task.__call__``, so the daemon
	doesn't die. This does't happen for pure functions yet, only
	:class:`Task` classes.

	* ``autodiscover()`` now works with zipped eggs.

	* celeryd: Now adds curernt working directory to ``sys.path`` for
	convenience.

	* The ``run_every`` attribute of :class:`PeriodicTask` classes can now
	  be a :class:`datetime.timedelta()` object.

	* celeryd: You can now set the ``DJANGO_PROJECT_DIR`` variable for
	``celeryd`` and it will add that to ``sys.path`` for easy launching.

	* Can now check if a task has been executed or not via HTTP.

	You can do this by including the celery ``urls.py`` into your project,

		>>> url(r'^celery/$', include("celery.urls"))

	then visiting the following url,::

		http://mysite/celery/$task_id/done/

	this will return a JSON dictionary like e.g:

		>>> {"task": {"id": $task_id, "executed": true}}

	* ``delay_task`` now returns string id, not :class:`uuid.UUID` instance.

	* Now has ``PeriodicTasks``, to have ``cron`` like functionality.

	* Project changed name from ``crunchy`` to ``celery``. The details of
	the name change request is in ``docs/name_change_request.txt``.

0.1.0 :date:`2009-04-24 11:28 A.M CET` :author:askh@opera.com
--------------------------------------------------------------

	* Initial release