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  <div class="section" id="change-history">
<h1>Change history<a class="headerlink" href="#change-history" title="Permalink to this headline">¶</a></h1>
<div class="section" id="p-m-cet">
<h2>0.3.7 [2008-06-16 11:41 P.M CET]<a class="headerlink" href="#p-m-cet" title="Permalink to this headline">¶</a></h2>
<ul>
<li><dl class="first docutils">
<dt><strong>IMPORTANT</strong> Now uses AMQP&#8217;s <tt class="docutils literal"><span class="pre">basic.consume</span></tt> instead of</dt>
<dd><p class="first last"><tt class="docutils literal"><span class="pre">basic.get</span></tt>. This means we&#8217;re no longer polling the broker for
new messages.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt><strong>IMPORTANT</strong> Default concurrency is now set to the number of CPU</dt>
<dd><p class="first last">available on the system.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt><strong>IMPORTANT</strong> <tt class="docutils literal"><span class="pre">tasks.register</span></tt>: Renamed <tt class="docutils literal"><span class="pre">task_name</span></tt> argument to</dt>
<dd><p class="first"><tt class="docutils literal"><span class="pre">name</span></tt>, so</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">tasks</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">task_name</span><span class="o">=</span><span class="s">&quot;mytask&quot;</span><span class="p">)</span>
</pre></div>
</div>
<p>has to be replaced with:</p>
<div class="last highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">tasks</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">name</span><span class="o">=</span><span class="s">&quot;mytask&quot;</span><span class="p">)</span>
</pre></div>
</div>
</dd>
</dl>
</li>
<li><p class="first">The daemon now correctly runs if the pidlock is stale.</p>
</li>
<li><p class="first">Now compatible with carrot 0.5.0 (TBA)</p>
</li>
<li><p class="first">Default AMQP connnection timeout is now 4 seconds.</p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">AsyncResult.read()</span></tt> was always returning <tt class="xref docutils literal"><span class="pre">True</span></tt>.</p>
</li>
<li><dl class="first docutils">
<dt>Only use README as long_description if the file exists so easy_install don&#8217;t</dt>
<dd><p class="first last">break. Closes #11.</p>
</dd>
</dl>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">celery.view</span></tt>: JSON responses now properly set its mime-type.</p>
</li>
<li><dl class="first docutils">
<dt><tt class="docutils literal"><span class="pre">apply_async</span></tt> now has a <tt class="docutils literal"><span class="pre">connection</span></tt> keyword argument so you</dt>
<dd><p class="first last">can re-use the same AMQP connection if you want to execute
more than one task.</p>
</dd>
</dl>
</li>
<li><p class="first">Handle failures in task_status view such that it won&#8217;t throw 500s.</p>
</li>
<li><p class="first">Fixed typo <tt class="docutils literal"><span class="pre">AMQP_SERVER</span></tt> in documentation to <tt class="docutils literal"><span class="pre">AMQP_HOST</span></tt>.</p>
</li>
<li><p class="first">Worker exception e-mails send to admins now works properly.</p>
</li>
<li><dl class="first docutils">
<dt>No longer depends on <tt class="docutils literal"><span class="pre">django</span></tt>, so installing <tt class="docutils literal"><span class="pre">celery</span></tt> won&#8217;t affect</dt>
<dd><p class="first last">the preferred django version installed.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt>Now works with PostgreSQL (psycopg2) again by registering the</dt>
<dd><p class="first last"><tt class="docutils literal"><span class="pre">PickledObject</span></tt> field.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt><tt class="docutils literal"><span class="pre">celeryd</span></tt>: Added <tt class="docutils literal"><span class="pre">--detach</span></tt> option as an alias to <tt class="docutils literal"><span class="pre">--daemon</span></tt>, and</dt>
<dd><p class="first last">it&#8217;s the term used in the documentation from now on.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt>Make sure the pool and periodic task worker thread is terminated</dt>
<dd><p class="first last">properly at exit. (So <tt class="docutils literal"><span class="pre">Ctrl-C</span></tt> works again).</p>
</dd>
</dl>
</li>
<li><p class="first">Now depends on <tt class="docutils literal"><span class="pre">python-daemon</span></tt>.</p>
</li>
<li><p class="first">Removed dependency to <tt class="docutils literal"><span class="pre">simplejson</span></tt></p>
</li>
<li><dl class="first docutils">
<dt>Cache Backend: Re-establishes connection for every task process</dt>
<dd><p class="first last">if the Django cache backend is memcached/libmemcached.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt>Tyrant Backend: Now re-establishes the connection for every task</dt>
<dd><p class="first last">executed.</p>
</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="id1">
<h2>0.3.3 [2009-06-08 01:07 P.M CET]<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h2>
<ul>
<li><dl class="first docutils">
<dt>The <tt class="docutils literal"><span class="pre">PeriodicWorkController</span></tt> now sleeps for 1 second between checking</dt>
<dd><p class="first last">for periodic tasks to execute.</p>
</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="id2">
<h2>0.3.2 [2009-06-08 01:07 P.M CET]<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h2>
<ul>
<li><dl class="first docutils">
<dt>celeryd: Added option <tt class="docutils literal"><span class="pre">--discard</span></tt>: Discard (delete!) all waiting</dt>
<dd><p class="first last">messages in the queue.</p>
</dd>
</dl>
</li>
<li><p class="first">celeryd: The <tt class="docutils literal"><span class="pre">--wakeup-after</span></tt> option was not handled as a float.</p>
</li>
</ul>
</div>
<div class="section" id="id3">
<h2>0.3.1 [2009-06-08 01:07 P.M CET]<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h2>
<ul>
<li><dl class="first docutils">
<dt>The <cite>PeriodicTask`</cite> worker is now running in its own thread instead</dt>
<dd><p class="first last">of blocking the <tt class="docutils literal"><span class="pre">TaskController</span></tt> loop.</p>
</dd>
</dl>
</li>
<li><p class="first">Default <tt class="docutils literal"><span class="pre">QUEUE_WAKEUP_AFTER</span></tt> has been lowered to <tt class="docutils literal"><span class="pre">0.1</span></tt> (was <tt class="docutils literal"><span class="pre">0.3</span></tt>)</p>
</li>
</ul>
</div>
<div class="section" id="id4">
<h2>0.3.0 [2009-06-08 12:41 P.M CET]<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h2>
<p><strong>NOTE</strong> This is a development version, for the stable release, please
see versions 0.2.x.</p>
<p><strong>VERY IMPORTANT:</strong> Pickle is now the encoder used for serializing task
arguments, so be sure to flush your task queue before you upgrade.</p>
<ul>
<li><dl class="first docutils">
<dt><strong>IMPORTANT</strong> TaskSet.run() now returns a celery.result.TaskSetResult</dt>
<dd><p class="first last">instance, which lets you inspect the status and return values of a
taskset as it was a single entity.</p>
</dd>
</dl>
</li>
<li><p class="first"><strong>IMPORTANT</strong> Celery now depends on carrot &gt;= 0.4.1.</p>
</li>
<li><dl class="first docutils">
<dt>The celery daemon now sends task errors to the registered admin e-mails.</dt>
<dd><p class="first last">To turn off this feature, set <tt class="docutils literal"><span class="pre">SEND_CELERY_TASK_ERROR_EMAILS</span></tt> to
<tt class="xref docutils literal"><span class="pre">False</span></tt> in your <tt class="docutils literal"><span class="pre">settings.py</span></tt>. Thanks to Grégoire Cachet.</p>
</dd>
</dl>
</li>
<li><p class="first">You can now run the celery daemon by using <tt class="docutils literal"><span class="pre">manage.py</span></tt>:</p>
<div class="highlight-python"><pre>        $ python manage.py celeryd

Thanks to Grégoire Cachet.</pre>
</div>
</li>
<li><dl class="first docutils">
<dt>Added support for message priorities, topic exchanges, custom routing</dt>
<dd><p class="first">keys for tasks. This means we have introduced
<tt class="docutils literal"><span class="pre">celery.task.apply_async</span></tt>, a new way of executing tasks.</p>
<p>You can use <tt class="docutils literal"><span class="pre">celery.task.delay</span></tt> and <tt class="docutils literal"><span class="pre">celery.Task.delay</span></tt> like usual, but
if you want greater control over the message sent, you want
<tt class="docutils literal"><span class="pre">celery.task.apply_async</span></tt> and <tt class="docutils literal"><span class="pre">celery.Task.apply_async</span></tt>.</p>
<p>This also means the AMQP configuration has changed. Some settings has
been renamed, while others are new:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">CELERY_AMQP_EXCHANGE</span>
<span class="n">CELERY_AMQP_PUBLISHER_ROUTING_KEY</span>
<span class="n">CELERY_AMQP_CONSUMER_ROUTING_KEY</span>
<span class="n">CELERY_AMQP_CONSUMER_QUEUE</span>
<span class="n">CELERY_AMQP_EXCHANGE_TYPE</span>
</pre></div>
</div>
<p class="last">See the entry <a class="reference external" href="http://bit.ly/celery_AMQP_routing">Can I send some tasks to only some servers?</a> in the
<a class="reference external" href="http://ask.github.com/celery/faq.html">FAQ</a> for more information.</p>
</dd>
</dl>
</li>
</ul>
<ul>
<li><dl class="first docutils">
<dt>Task errors are now logged using loglevel <tt class="docutils literal"><span class="pre">ERROR</span></tt> instead of <tt class="docutils literal"><span class="pre">INFO</span></tt>,</dt>
<dd><p class="first last">and backtraces are dumped. Thanks to Grégoire Cachet.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt>Make every new worker process re-establish it&#8217;s Django DB connection,</dt>
<dd><p class="first last">this solving the &#8220;MySQL connection died?&#8221; exceptions.
Thanks to Vitaly Babiy and Jirka Vejrazka.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt><strong>IMOPORTANT</strong> Now using pickle to encode task arguments. This means you</dt>
<dd><p class="first last">now can pass complex python objects to tasks as arguments.</p>
</dd>
</dl>
</li>
<li><p class="first">Removed dependency on <tt class="docutils literal"><span class="pre">yadayada</span></tt>.</p>
</li>
<li><p class="first">Added a FAQ, see <tt class="docutils literal"><span class="pre">docs/faq.rst</span></tt>.</p>
</li>
<li><dl class="first docutils">
<dt>Now converts any unicode keys in task <tt class="docutils literal"><span class="pre">kwargs</span></tt> to regular strings.</dt>
<dd><p class="first last">Thanks Vitaly Babiy.</p>
</dd>
</dl>
</li>
<li><p class="first">Renamed the <tt class="docutils literal"><span class="pre">TaskDaemon</span></tt> to <tt class="docutils literal"><span class="pre">WorkController</span></tt>.</p>
</li>
<li><dl class="first docutils">
<dt><tt class="docutils literal"><span class="pre">celery.datastructures.TaskProcessQueue</span></tt> is now renamed to</dt>
<dd><p class="first last"><tt class="docutils literal"><span class="pre">celery.pool.TaskPool</span></tt>.</p>
</dd>
</dl>
</li>
<li><dl class="first docutils">
<dt>The pool algorithm has been refactored for greater performance and</dt>
<dd><p class="first last">stability.</p>
</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="id5">
<h2>0.2.0 [2009-05-20 05:14 P.M CET]<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Final release of 0.2.0</li>
<li>Compatible with carrot version 0.4.0.</li>
<li>Fixes some syntax errors related to fetching results
from the database backend.</li>
</ul>
</div>
<div class="section" id="pre3-2009-05-20-05-14-p-m-cet">
<h2>0.2.0-pre3 [2009-05-20 05:14 P.M CET]<a class="headerlink" href="#pre3-2009-05-20-05-14-p-m-cet" title="Permalink to this headline">¶</a></h2>
<ul>
<li><dl class="first docutils">
<dt><em>Internal release</em>. Improved handling of unpickled exceptions,</dt>
<dd><p class="first last">get_result() now tries to recreate something looking like the
original exception.</p>
</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="pre2-2009-05-20-01-56-p-m-cet">
<h2>0.2.0-pre2 [2009-05-20 01:56 P.M CET]<a class="headerlink" href="#pre2-2009-05-20-01-56-p-m-cet" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Now handles unpickleable exceptions (like the dynimically generated
subclasses of <tt class="docutils literal"><span class="pre">django.core.exception.MultipleObjectsReturned</span></tt>).</li>
</ul>
</div>
<div class="section" id="pre1-2009-05-20-12-33-p-m-cet">
<h2>0.2.0-pre1 [2009-05-20 12:33 P.M CET]<a class="headerlink" href="#pre1-2009-05-20-12-33-p-m-cet" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>It&#8217;s getting quite stable, with a lot of new features, so bump
version to 0.2. This is a pre-release.</li>
<li><tt class="docutils literal"><span class="pre">celery.task.mark_as_read()</span></tt> and <tt class="docutils literal"><span class="pre">celery.task.mark_as_failure()</span></tt> has
been removed. Use <tt class="docutils literal"><span class="pre">celery.backends.default_backend.mark_as_read()</span></tt>,
and <tt class="docutils literal"><span class="pre">celery.backends.default_backend.mark_as_failure()</span></tt> instead.</li>
</ul>
</div>
<div class="section" id="id6">
<h2>0.1.15 [2009-05-19 04:13 P.M CET]<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>The celery daemon was leaking AMQP connections, this should be fixed,
if you have any problems with too many files open (like <tt class="docutils literal"><span class="pre">emfile</span></tt>
errors in <tt class="docutils literal"><span class="pre">rabbit.log</span></tt>, please contact us!</li>
</ul>
</div>
<div class="section" id="id7">
<h2>0.1.14 [2009-05-19 01:08 P.M CET]<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Fixed a syntax error in the <tt class="docutils literal"><span class="pre">TaskSet</span></tt> class.  (No such variable
<tt class="docutils literal"><span class="pre">TimeOutError</span></tt>).</li>
</ul>
</div>
<div class="section" id="id8">
<h2>0.1.13 [2009-05-19 12:36 P.M CET]<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h2>
<ul>
<li><p class="first">Forgot to add <tt class="docutils literal"><span class="pre">yadayada</span></tt> to install requirements.</p>
</li>
<li><p class="first">Now deletes all expired task results, not just those marked as done.</p>
</li>
<li><p class="first">Able to load the Tokyo Tyrant backend class without django
configuration, can specify tyrant settings directly in the class
constructor.</p>
</li>
<li><p class="first">Improved API documentation</p>
</li>
<li><p class="first">Now using the Sphinx documentation system, you can build
the html documentation by doing</p>
<div class="highlight-python"><pre>$ cd docs
$ make html</pre>
</div>
<p>and the result will be in <tt class="docutils literal"><span class="pre">docs/.build/html</span></tt>.</p>
</li>
</ul>
</div>
<div class="section" id="id9">
<h2>0.1.12 [2009-05-18 04:38 P.M CET]<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">delay_task()</span></tt> etc. now returns <tt class="docutils literal"><span class="pre">celery.task.AsyncResult</span></tt> object,
which lets you check the result and any failure that might have
happened.  It kind of works like the <tt class="docutils literal"><span class="pre">multiprocessing.AsyncResult</span></tt>
class returned by <tt class="docutils literal"><span class="pre">multiprocessing.Pool.map_async</span></tt>.</p>
</li>
<li><p class="first">Added dmap() and dmap_async(). This works like the
<tt class="docutils literal"><span class="pre">multiprocessing.Pool</span></tt> versions except they are tasks
distributed to the celery server. Example:</p>
<blockquote>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">dmap</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">operator</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">dmap</span><span class="p">(</span><span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">,</span> <span class="p">[[</span><span class="mf">2</span><span class="p">,</span> <span class="mf">2</span><span class="p">],</span> <span class="p">[</span><span class="mf">4</span><span class="p">,</span> <span class="mf">4</span><span class="p">],</span> <span class="p">[</span><span class="mf">8</span><span class="p">,</span> <span class="mf">8</span><span class="p">]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="p">[</span><span class="mf">4</span><span class="p">,</span> <span class="mf">8</span><span class="p">,</span> <span class="mf">16</span><span class="p">]</span>
</pre></div>
</div>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">dmap_async</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">operator</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span> <span class="o">=</span> <span class="n">dmap_async</span><span class="p">(</span><span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">,</span> <span class="p">[[</span><span class="mf">2</span><span class="p">,</span> <span class="mf">2</span><span class="p">],</span> <span class="p">[</span><span class="mf">4</span><span class="p">,</span> <span class="mf">4</span><span class="p">],</span> <span class="p">[</span><span class="mf">8</span><span class="p">,</span> <span class="mf">8</span><span class="p">]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span><span class="o">.</span><span class="n">ready</span><span class="p">()</span>
<span class="go">False</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">1</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span><span class="o">.</span><span class="n">ready</span><span class="p">()</span>
<span class="go">True</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span><span class="o">.</span><span class="n">result</span>
<span class="go">[4, 8, 16]</span>
</pre></div>
</div>
</blockquote>
</li>
<li><p class="first">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</p>
<blockquote>
<p>CELERY_BACKEND = &#8220;database&#8221;; # Uses the database</p>
<p>CELERY_BACKEND = &#8220;cache&#8221;; # Uses the django cache framework</p>
<p>CELERY_BACKEND = &#8220;tyrant&#8221;; # Uses Tokyo Tyrant
TT_HOST = &#8220;localhost&#8221;; # Hostname for the Tokyo Tyrant server.
TT_PORT = 6657; # Port of the Tokyo Tyrant server.</p>
</blockquote>
</li>
</ul>
</div>
<div class="section" id="id10">
<h2>0.1.11 [2009-05-12 02:08 P.M CET]<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>The logging system was leaking file descriptors, resulting in
servers stopping with the EMFILES (too many open files) error. (fixed)</li>
</ul>
</div>
<div class="section" id="id11">
<h2>0.1.10 [2009-05-11 12:46 P.M CET]<a class="headerlink" href="#id11" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Tasks now supports both positional arguments and keyword arguments.</li>
<li>Requires carrot 0.3.8.</li>
<li>The daemon now tries to reconnect if the connection is lost.</li>
</ul>
</div>
<div class="section" id="id12">
<h2>0.1.8 [2009-05-07 12:27 P.M CET]<a class="headerlink" href="#id12" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Better test coverage</li>
<li>More documentation</li>
<li>celeryd doesn&#8217;t emit <tt class="docutils literal"><span class="pre">Queue</span> <span class="pre">is</span> <span class="pre">empty</span></tt> message if
<tt class="docutils literal"><span class="pre">settings.CELERYD_EMPTY_MSG_EMIT_EVERY</span></tt> is 0.</li>
</ul>
</div>
<div class="section" id="id13">
<h2>0.1.7 [2009-04-30 1:50 P.M CET]<a class="headerlink" href="#id13" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Added some unittests</li>
<li>Can now use the database for task metadata (like if the task has
been executed or not). Set <tt class="docutils literal"><span class="pre">settings.CELERY_TASK_META</span></tt></li>
<li>Can now run <tt class="docutils literal"><span class="pre">python</span> <span class="pre">setup.py</span> <span class="pre">test</span></tt> to run the unittests from
within the <tt class="docutils literal"><span class="pre">testproj</span></tt> project.</li>
<li>Can set the AMQP exchange/routing key/queue using
<tt class="docutils literal"><span class="pre">settings.CELERY_AMQP_EXCHANGE</span></tt>, <tt class="docutils literal"><span class="pre">settings.CELERY_AMQP_ROUTING_KEY</span></tt>,
and <tt class="docutils literal"><span class="pre">settings.CELERY_AMQP_CONSUMER_QUEUE</span></tt>.</li>
</ul>
</div>
<div class="section" id="id14">
<h2>0.1.6 [2009-04-28 2:13 P.M CET]<a class="headerlink" href="#id14" title="Permalink to this headline">¶</a></h2>
<blockquote>
<ul class="simple">
<li>Introducing <tt class="docutils literal"><span class="pre">TaskSet</span></tt>. 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)</li>
<li>Now catches all exceptions when running <tt class="docutils literal"><span class="pre">Task.__call__</span></tt>, so the
daemon doesn&#8217;t die. This does&#8217;t happen for pure functions yet, only
<tt class="docutils literal"><span class="pre">Task</span></tt> classes.</li>
<li><tt class="docutils literal"><span class="pre">autodiscover()</span></tt> now works with zipped eggs.</li>
<li>celeryd: Now adds curernt working directory to <tt class="docutils literal"><span class="pre">sys.path</span></tt> for
convenience.</li>
<li>The <tt class="docutils literal"><span class="pre">run_every</span></tt> attribute of <tt class="docutils literal"><span class="pre">PeriodicTask</span></tt> classes can now be a
<tt class="docutils literal"><span class="pre">datetime.timedelta()</span></tt> object.</li>
<li>celeryd: You can now set the <tt class="docutils literal"><span class="pre">DJANGO_PROJECT_DIR</span></tt> variable
for <tt class="docutils literal"><span class="pre">celeryd</span></tt> and it will add that to <tt class="docutils literal"><span class="pre">sys.path</span></tt> for easy launching.</li>
<li>Can now check if a task has been executed or not via HTTP.</li>
</ul>
<p>You can do this by including the celery <tt class="docutils literal"><span class="pre">urls.py</span></tt> into your project,</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">url</span><span class="p">(</span><span class="s">r&#39;^celery/$&#39;</span><span class="p">,</span> <span class="n">include</span><span class="p">(</span><span class="s">&quot;celery.urls&quot;</span><span class="p">))</span>
</pre></div>
</div>
<p>then visiting the following url,:</p>
<div class="highlight-python"><pre>http://mysite/celery/$task_id/done/</pre>
</div>
<p>this will return a JSON dictionary like e.g:</p>
<div class="highlight-python"><pre>&gt;&gt;&gt; {"task": {"id": $task_id, "executed": true}}</pre>
</div>
<ul class="simple">
<li><tt class="docutils literal"><span class="pre">delay_task</span></tt> now returns string id, not <tt class="docutils literal"><span class="pre">uuid.UUID</span></tt> instance.</li>
<li>Now has <tt class="docutils literal"><span class="pre">PeriodicTasks</span></tt>, to have <tt class="docutils literal"><span class="pre">cron</span></tt> like functionality.</li>
<li>Project changed name from <tt class="docutils literal"><span class="pre">crunchy</span></tt> to <tt class="docutils literal"><span class="pre">celery</span></tt>. The details of
the name change request is in <tt class="docutils literal"><span class="pre">docs/name_change_request.txt</span></tt>.</li>
</ul>
</blockquote>
</div>
<div class="section" id="a-m-cet">
<h2>0.1.0 [2009-04-24 11:28 A.M CET]<a class="headerlink" href="#a-m-cet" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Initial release</li>
</ul>
</div>
</div>


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	  <h3>Contents</h3>
	  <ul class="current">
<li class="toctree-l1"><a class="reference external" href="introduction.html">celery - Distributed Task Queue for Django.</a></li>
<li class="toctree-l1"><a class="reference external" href="faq.html">Frequently Asked Questions</a></li>
<li class="toctree-l1"><a class="reference external" href="reference/index.html">Module API Reference</a></li>
<li class="toctree-l1 current"><a class="current reference external" href="">Change history</a><ul>
<li class="toctree-l2"><a class="reference external" href="#p-m-cet">0.3.7 [2008-06-16 11:41 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id1">0.3.3 [2009-06-08 01:07 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id2">0.3.2 [2009-06-08 01:07 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id3">0.3.1 [2009-06-08 01:07 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id4">0.3.0 [2009-06-08 12:41 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id5">0.2.0 [2009-05-20 05:14 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#pre3-2009-05-20-05-14-p-m-cet">0.2.0-pre3 [2009-05-20 05:14 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#pre2-2009-05-20-01-56-p-m-cet">0.2.0-pre2 [2009-05-20 01:56 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#pre1-2009-05-20-12-33-p-m-cet">0.2.0-pre1 [2009-05-20 12:33 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id6">0.1.15 [2009-05-19 04:13 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id7">0.1.14 [2009-05-19 01:08 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id8">0.1.13 [2009-05-19 12:36 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id9">0.1.12 [2009-05-18 04:38 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id10">0.1.11 [2009-05-12 02:08 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id11">0.1.10 [2009-05-11 12:46 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id12">0.1.8 [2009-05-07 12:27 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id13">0.1.7 [2009-04-30 1:50 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#id14">0.1.6 [2009-04-28 2:13 P.M CET]</a></li>
<li class="toctree-l2"><a class="reference external" href="#a-m-cet">0.1.0 [2009-04-24 11:28 A.M CET]</a></li>
</ul>
</li>
</ul>

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