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Ask Solem 16 年 前
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+	<h1><a href="index.html">Celery v0.3.0 (unstable) documentation</a></h1>
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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-askh-opera-com">
+<h2>0.3.0 [2009-06-08 12:41 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#p-m-cet-askh-opera-com" 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;= 0.4.0.</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><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="id1">
+<h2>0.2.0 [2009-05-20 05:14 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id1" 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-askh-opera-com">
+<h2>0.2.0-pre3 [2009-05-20 05:14 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#pre3-2009-05-20-05-14-p-m-cet-askh-opera-com" 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-askh-opera-com">
+<h2>0.2.0-pre2 [2009-05-20 01:56 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#pre2-2009-05-20-01-56-p-m-cet-askh-opera-com" 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-askh-opera-com">
+<h2>0.2.0-pre1 [2009-05-20 12:33 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#pre1-2009-05-20-12-33-p-m-cet-askh-opera-com" 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="id2">
+<h2>0.1.15 [2009-05-19 04:13 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id2" 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="id3">
+<h2>0.1.14 [2009-05-19 01:08 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id3" 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="id4">
+<h2>0.1.13 [2009-05-19 12:36 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id4" 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="id5">
+<h2>0.1.12 [2009-05-18 04:38 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id5" 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="id6">
+<h2>0.1.11 [2009-05-12 02:08 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id6" 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="id7">
+<h2>0.1.10 [2009-05-11 12:46 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id7" 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="id8">
+<h2>0.1.8 [2009-05-07 12:27 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id8" 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="id9">
+<h2>0.1.7 [2009-04-30 1:50 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id9" 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="id10">
+<h2>0.1.6 [2009-04-28 2:13 P.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#id10" 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-askh-opera-com">
+<h2>0.1.0 [2009-04-24 11:28 A.M CET] <a class="reference external" href="mailto:askh&#37;&#52;&#48;opera&#46;com">askh<span>&#64;</span>opera<span>&#46;</span>com</a><a class="headerlink" href="#a-m-cet-askh-opera-com" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li>Initial release</li>
+</ul>
+</div>
+</div>
+
+
+	      </div>
+	    </div>
+	  </div>
+	</div>
+	<div class="sidebar">
+	  <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-askh-opera-com">0.3.0 [2009-06-08 12:41 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id1">0.2.0 [2009-05-20 05:14 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#pre3-2009-05-20-05-14-p-m-cet-askh-opera-com">0.2.0-pre3 [2009-05-20 05:14 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#pre2-2009-05-20-01-56-p-m-cet-askh-opera-com">0.2.0-pre2 [2009-05-20 01:56 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#pre1-2009-05-20-12-33-p-m-cet-askh-opera-com">0.2.0-pre1 [2009-05-20 12:33 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id2">0.1.15 [2009-05-19 04:13 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id3">0.1.14 [2009-05-19 01:08 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id4">0.1.13 [2009-05-19 12:36 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id5">0.1.12 [2009-05-18 04:38 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id6">0.1.11 [2009-05-12 02:08 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id7">0.1.10 [2009-05-11 12:46 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id8">0.1.8 [2009-05-07 12:27 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id9">0.1.7 [2009-04-30 1:50 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#id10">0.1.6 [2009-04-28 2:13 P.M CET] askh&#64;opera.com</a></li>
+<li class="toctree-l2"><a class="reference external" href="#a-m-cet-askh-opera-com">0.1.0 [2009-04-24 11:28 A.M CET] askh&#64;opera.com</a></li>
+</ul>
+</li>
+</ul>
+
+	  <h3 style="margin-top: 1.5em;">Search</h3>
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+            <input type="text" name="q" size="18" />
+            <input type="submit" value="Go" />
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+            Enter search terms or a module, class or function name.
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+ 262 - 0
sources/changelog.txt

@@ -0,0 +1,262 @@
+==============
+Change history
+==============
+
+0.3.0 [2009-06-08 12:41 P.M CET] askh@opera.com
+-----------------------------------------------
+**NOTE** This is a development version, for the stable release, please
+see versions 0.2.x.
+
+**VERY IMPORTANT:** Pickle is now the encoder used for serializing task
+arguments, so be sure to flush your task queue before you upgrade.
+
+	* **IMPORTANT** TaskSet.run() now returns a celery.result.TaskSetResult
+		instance, which lets you inspect the status and return values of a
+		taskset as it was a single entity.
+
+	* **IMPORTANT** Celery now depends on carrot >= 0.4.0.
+
+	* The celery daemon now sends task errors to the registered admin e-mails.
+		To turn off this feature, set ``SEND_CELERY_TASK_ERROR_EMAILS`` to
+		``False`` in your ``settings.py``. Thanks to Grégoire Cachet.
+
+	* You can now run the celery daemon by using ``manage.py``::
+		
+			$ python manage.py celeryd
+
+		Thanks to Grégoire Cachet.
+
+	* Added support for message priorities, topic exchanges, custom routing
+		keys for tasks. This means we have introduced
+		``celery.task.apply_async``, a new way of executing tasks.
+
+		You can use ``celery.task.delay`` and ``celery.Task.delay`` like usual, but
+		if you want greater control over the message sent, you want
+		``celery.task.apply_async`` and ``celery.Task.apply_async``.
+
+		This also means the AMQP configuration has changed. Some settings has
+		been renamed, while others are new::
+
+			CELERY_AMQP_EXCHANGE
+			CELERY_AMQP_PUBLISHER_ROUTING_KEY
+			CELERY_AMQP_CONSUMER_ROUTING_KEY
+			CELERY_AMQP_CONSUMER_QUEUE
+			CELERY_AMQP_EXCHANGE_TYPE
+
+		See the entry `Can I send some tasks to only some servers?`_ in the
+		`FAQ`_ for more information.
+
+.. _`Can I send some tasks to only some servers?`:
+		http://bit.ly/celery_AMQP_routing
+.. _`FAQ`: http://ask.github.com/celery/faq.html
+
+	* Task errors are now logged using loglevel ``ERROR`` instead of ``INFO``,
+		and backtraces are dumped. Thanks to Grégoire Cachet.
+
+	* **IMOPORTANT** Now using pickle to encode task arguments. This means you
+		now can pass complex python objects to tasks as arguments.
+
+	* Removed dependency on ``yadayada``.
+
+	* Added a FAQ, see ``docs/faq.rst``.
+
+	* Now converts any unicode keys in task ``kwargs`` to regular strings.
+		Thanks Vitaly Babiy.
+
+	* Renamed the ``TaskDaemon`` to ``WorkController``.
+
+	* ``celery.datastructures.TaskProcessQueue`` is now renamed to
+		``celery.pool.TaskPool``.
+
+	* The pool algorithm has been refactored for greater performance and
+		stability.
+
+0.2.0 [2009-05-20 05:14 P.M CET] askh@opera.com
+------------------------------------------------
+
+	* Final release of 0.2.0
+
+	* Compatible with carrot version 0.4.0.
+
+	* Fixes some syntax errors related to fetching results
+	  from the database backend.
+
+0.2.0-pre3 [2009-05-20 05:14 P.M CET] askh@opera.com
+----------------------------------------------------
+
+	 * *Internal release*. Improved handling of unpickled exceptions,
+	 	get_result() now tries to recreate something looking like the
+	 	original exception.
+
+0.2.0-pre2 [2009-05-20 01:56 P.M CET] askh@opera.com
+----------------------------------------------------
+
+	* Now handles unpickleable exceptions (like the dynimically generated
+	  subclasses of ``django.core.exception.MultipleObjectsReturned``).
+
+0.2.0-pre1 [2009-05-20 12:33 P.M CET] askh@opera.com
+----------------------------------------------------
+
+	* It's getting quite stable, with a lot of new features, so bump
+	  version to 0.2. This is a pre-release.
+
+	* ``celery.task.mark_as_read()`` and ``celery.task.mark_as_failure()`` has
+	  been removed. Use ``celery.backends.default_backend.mark_as_read()``, 
+	  and ``celery.backends.default_backend.mark_as_failure()`` instead.
+
+0.1.15 [2009-05-19 04:13 P.M CET] askh@opera.com
+------------------------------------------------
+
+	* The celery daemon was leaking AMQP connections, this should be fixed,
+	  if you have any problems with too many files open (like ``emfile``
+	  errors in ``rabbit.log``, please contact us!
+
+0.1.14 [2009-05-19 01:08 P.M CET] askh@opera.com
+------------------------------------------------
+
+	* Fixed a syntax error in the ``TaskSet`` class.  (No such variable
+	  ``TimeOutError``).
+
+0.1.13 [2009-05-19 12:36 P.M CET] askh@opera.com
+------------------------------------------------
+
+	* Forgot to add ``yadayada`` to install requirements.
+
+	* Now deletes all expired task results, not just those marked as done.
+
+	* Able to load the Tokyo Tyrant backend class without django
+	  configuration, can specify tyrant settings directly in the class
+	  constructor.
+
+	* Improved API documentation
+
+	* Now using the Sphinx documentation system, you can build
+	  the html documentation by doing ::
+
+			$ cd docs
+			$ make html
+	
+	  and the result will be in ``docs/.build/html``.
+
+0.1.12 [2009-05-18 04:38 P.M CET] askh@opera.com
+------------------------------------------------
+
+    * ``delay_task()`` etc. now returns ``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 [2009-05-12 02:08 P.M CET] 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 [2009-05-11 12:46 P.M CET] 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 [2009-05-07 12:27 P.M CET] askh@opera.com
+------------------------------------------------
+
+	* Better test coverage
+	* More documentation
+	* celeryd doesn't emit ``Queue is empty`` message if
+	  ``settings.CELERYD_EMPTY_MSG_EMIT_EVERY`` is 0.
+
+0.1.7 [2009-04-30 1:50 P.M CET] askh@opera.com
+-----------------------------------------------
+
+	* Added some unittests
+
+	* Can now use the database for task metadata (like if the task has
+	  been executed or not). Set ``settings.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
+	  ``settings.CELERY_AMQP_EXCHANGE``, ``settings.CELERY_AMQP_ROUTING_KEY``,
+	  and ``settings.CELERY_AMQP_CONSUMER_QUEUE``.
+
+0.1.6 [2009-04-28 2:13 P.M CET] 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
+	  ``Task`` classes.
+
+	* ``autodiscover()`` now works with zipped eggs.
+
+	* celeryd: Now adds curernt working directory to ``sys.path`` for
+	  convenience.
+
+	* The ``run_every`` attribute of ``PeriodicTask`` classes can now be a
+	  ``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 ``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 [2009-04-24 11:28 A.M CET] askh@opera.com
+------------------------------------------------
+
+	* Initial release