yangck
/
celery


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190
							<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    
    <title>Executing Tasks - celery.execute &mdash; Celery v0.3.20 (unstable) documentation</title>
    <link rel="stylesheet" href="../static/nature.css" type="text/css" />
    <link rel="stylesheet" href="../static/pygments.css" type="text/css" />
    <script type="text/javascript">
      var DOCUMENTATION_OPTIONS = {
        URL_ROOT:    '../',
        VERSION:     '0.3.20 (unstable)',
        COLLAPSE_MODINDEX: false,
        FILE_SUFFIX: '.html',
        HAS_SOURCE:  true
      };
    </script>
    <script type="text/javascript" src="../static/jquery.js"></script>
    <script type="text/javascript" src="../static/doctools.js"></script>
    <link rel="top" title="Celery v0.3.20 (unstable) documentation" href="../index.html" />
    <link rel="up" title="Module API Reference" href="index.html" />
    <link rel="next" title="Task Result - celery.result" href="celery.result.html" />
    <link rel="prev" title="Defining Tasks - celery.task.base" href="celery.task.base.html" /> 
  </head>
  <body>
    <div class="related">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             accesskey="I">index</a></li>
        <li class="right" >
          <a href="../modindex.html" title="Global Module Index"
             accesskey="M">modules</a> |</li>
        <li class="right" >
          <a href="celery.result.html" title="Task Result - celery.result"
             accesskey="N">next</a> |</li>
        <li class="right" >
          <a href="celery.task.base.html" title="Defining Tasks - celery.task.base"
             accesskey="P">previous</a> |</li>
        <li><a href="../index.html">Celery v0.3.20 (unstable) documentation</a> &raquo;</li>
          <li><a href="index.html" accesskey="U">Module API Reference</a> &raquo;</li> 
      </ul>
    </div>  

    <div class="document">
      <div class="documentwrapper">
        <div class="bodywrapper">
          <div class="body">
            
  <div class="section" id="module-celery.execute">
<h1>Executing Tasks - celery.execute<a class="headerlink" href="#module-celery.execute" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="celery.execute.apply_async">
<tt class="descclassname">celery.execute.</tt><tt class="descname">apply_async</tt><big>(</big><em>task</em>, <em>args=None</em>, <em>kwargs=None</em>, <em>routing_key=None</em>, <em>immediate=None</em>, <em>mandatory=None</em>, <em>connection=None</em>, <em>connect_timeout=4</em>, <em>priority=None</em>, <em>countdown=None</em>, <em>eta=None</em>, <em>**opts</em><big>)</big><a class="headerlink" href="#celery.execute.apply_async" title="Permalink to this definition">¶</a></dt>
<dd><p>Run a task asynchronously by the celery daemon(s).</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><em>task</em> &#8211; The task to run (a callable object, or a <tt class="xref docutils literal"><span class="pre">Task</span></tt>
instance</li>
<li><em>args</em> &#8211; The positional arguments to pass on to the task (a <tt class="docutils literal"><span class="pre">list</span></tt>).</li>
<li><em>kwargs</em> &#8211; The keyword arguments to pass on to the task (a <tt class="docutils literal"><span class="pre">dict</span></tt>)</li>
<li><em>countdown</em> &#8211; Number of seconds into the future that the task should
execute. Defaults to immediate delivery (Do not confuse that with
the <tt class="docutils literal"><span class="pre">immediate</span></tt> setting, they are unrelated).</li>
<li><em>eta</em> &#8211; A <tt class="xref docutils literal"><span class="pre">datetime.datetime</span></tt> object that describes the
absolute time when the task should execute. May not be specified
if <tt class="docutils literal"><span class="pre">countdown</span></tt> is also supplied. (Do not confuse this with the
<tt class="docutils literal"><span class="pre">immediate</span></tt> setting, they are unrelated).</li>
<li><em>routing_key</em> &#8211; The routing key used to route the task to a worker
server.</li>
<li><em>immediate</em> &#8211; Request immediate delivery. Will raise an exception
if the task cannot be routed to a worker immediately.
(Do not confuse this parameter with the <tt class="docutils literal"><span class="pre">countdown</span></tt> and <tt class="docutils literal"><span class="pre">eta</span></tt>
settings, as they are unrelated).</li>
<li><em>mandatory</em> &#8211; Mandatory routing. Raises an exception if there&#8217;s
no running workers able to take on this task.</li>
<li><em>connection</em> &#8211; Re-use existing AMQP connection.
The <tt class="docutils literal"><span class="pre">connect_timeout</span></tt> argument is not respected if this is set.</li>
<li><em>connect_timeout</em> &#8211; The timeout in seconds, before we give up
on establishing a connection to the AMQP server.</li>
<li><em>priority</em> &#8211; The task priority, a number between <tt class="docutils literal"><span class="pre">0</span></tt> and <tt class="docutils literal"><span class="pre">9</span></tt>.</li>
</ul>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="function">
<dt id="celery.execute.delay_task">
<tt class="descclassname">celery.execute.</tt><tt class="descname">delay_task</tt><big>(</big><em>task_name</em>, <em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.execute.delay_task" title="Permalink to this definition">¶</a></dt>
<dd><p>Delay a task for execution by the <tt class="docutils literal"><span class="pre">celery</span></tt> daemon.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><em>task_name</em> &#8211; the name of a task registered in the task registry.</li>
<li><em>*args</em> &#8211; positional arguments to pass on to the task.</li>
<li><em>**kwargs</em> &#8211; keyword arguments to pass on to the task.</li>
</ul>
</td>
</tr>
<tr class="field"><th class="field-name" colspan="2">Raises <a title="celery.registry.NotRegistered" class="reference external" href="celery.registry.html#celery.registry.NotRegistered">celery.registry.NotRegistered</a>:</th></tr>
<tr><td>&nbsp;</td><td class="field-body"><p class="first">exception if no such task
has been registered in the task registry.</p>
</td>
</tr>
<tr class="field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last"><a title="celery.result.AsyncResult" class="reference external" href="celery.result.html#celery.result.AsyncResult"><tt class="xref docutils literal"><span class="pre">celery.result.AsyncResult</span></tt></a>.</p>
</td>
</tr>
</tbody>
</table>
<p>Example</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">r</span> <span class="o">=</span> <span class="n">delay_task</span><span class="p">(</span><span class="s">&quot;update_record&quot;</span><span class="p">,</span> <span class="n">name</span><span class="o">=</span><span class="s">&quot;George Constanza&quot;</span><span class="p">,</span> <span class="n">age</span><span class="o">=</span><span class="mf">32</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">r</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">r</span><span class="o">.</span><span class="n">result</span>
<span class="go">&quot;Record was updated&quot;</span>
</pre></div>
</div>
</dd></dl>

</div>


          </div>
        </div>
      </div>
      <div class="sphinxsidebar">
        <div class="sphinxsidebarwrapper">
            <h4>Previous topic</h4>
            <p class="topless"><a href="celery.task.base.html"
                                  title="previous chapter">Defining Tasks - celery.task.base</a></p>
            <h4>Next topic</h4>
            <p class="topless"><a href="celery.result.html"
                                  title="next chapter">Task Result - celery.result</a></p>
            <h3>This Page</h3>
            <ul class="this-page-menu">
              <li><a href="../sources/reference/celery.execute.txt"
                     rel="nofollow">Show Source</a></li>
            </ul>
          <div id="searchbox" style="display: none">
            <h3>Quick search</h3>
              <form class="search" action="../search.html" method="get">
                <input type="text" name="q" size="18" />
                <input type="submit" value="Go" />
                <input type="hidden" name="check_keywords" value="yes" />
                <input type="hidden" name="area" value="default" />
              </form>
              <p class="searchtip" style="font-size: 90%">
              Enter search terms or a module, class or function name.
              </p>
          </div>
          <script type="text/javascript">$('#searchbox').show(0);</script>
        </div>
      </div>
      <div class="clearer"></div>
    </div>
    <div class="related">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             >index</a></li>
        <li class="right" >
          <a href="../modindex.html" title="Global Module Index"
             >modules</a> |</li>
        <li class="right" >
          <a href="celery.result.html" title="Task Result - celery.result"
             >next</a> |</li>
        <li class="right" >
          <a href="celery.task.base.html" title="Defining Tasks - celery.task.base"
             >previous</a> |</li>
        <li><a href="../index.html">Celery v0.3.20 (unstable) documentation</a> &raquo;</li>
          <li><a href="index.html" >Module API Reference</a> &raquo;</li> 
      </ul>
    </div>
    <div class="footer">
      &copy; Copyright 2009, Ask Solem.
      Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 0.6.2.
    </div>
  </body>
</html>