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Posted to commits@airflow.apache.org by ka...@apache.org on 2018/08/27 16:26:39 UTC
[19/51] [partial] incubator-airflow-site git commit: 1.10.0
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+ <h1>Source code for airflow.contrib.sensors.redis_key_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.redis_hook</span> <span class="k">import</span> <span class="n">RedisHook</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="RedisKeySensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.redis_key_sensor.RedisKeySensor">[docs]</a><span class="k">class</span> <span class="nc">RedisKeySensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Checks for the existence of a key in a Redis database</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'key'</span><span class="p">,)</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#f0eee4'</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">redis_conn_id</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Create a new RedisKeySensor</span>
+
+<span class="sd"> :param key: The key to be monitored</span>
+<span class="sd"> :type key: string</span>
+<span class="sd"> :param redis_conn_id: The connection ID to use when connecting to Redis DB.</span>
+<span class="sd"> :type redis_conn_id: string</span>
+<span class="sd"> """</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">RedisKeySensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">redis_conn_id</span> <span class="o">=</span> <span class="n">redis_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">key</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Sensor check existence of key: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">RedisHook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">redis_conn_id</span><span class="p">)</span><span class="o">.</span><span class="n">key_exists</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">)</span></div>
+</pre></div>
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diff --git a/_modules/airflow/contrib/sensors/sftp_sensor.html b/_modules/airflow/contrib/sensors/sftp_sensor.html
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+ <h1>Source code for airflow.contrib.sensors.sftp_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+
+<span class="kn">import</span> <span class="nn">logging</span>
+<span class="kn">from</span> <span class="nn">paramiko</span> <span class="k">import</span> <span class="n">SFTP_NO_SUCH_FILE</span>
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.sftp_hook</span> <span class="k">import</span> <span class="n">SFTPHook</span>
+<span class="kn">from</span> <span class="nn">airflow.operators.sensors</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="SFTPSensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.sftp_sensor.SFTPSensor">[docs]</a><span class="k">class</span> <span class="nc">SFTPSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Waits for a file or directory to be present on SFTP.</span>
+<span class="sd"> :param path: Remote file or directory path</span>
+<span class="sd"> :type path: str</span>
+<span class="sd"> :param sftp_conn_id: The connection to run the sensor against</span>
+<span class="sd"> :type sftp_conn_id: str</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'path'</span><span class="p">,)</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">sftp_conn_id</span><span class="o">=</span><span class="s1">'sftp_default'</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">SFTPSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">path</span> <span class="o">=</span> <span class="n">path</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="n">SFTPHook</span><span class="p">(</span><span class="n">sftp_conn_id</span><span class="o">=</span><span class="n">sftp_conn_id</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Poking for </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">path</span><span class="p">)</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">get_mod_time</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">path</span><span class="p">)</span>
+ <span class="k">except</span> <span class="ne">IOError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">errno</span> <span class="o">!=</span> <span class="n">SFTP_NO_SUCH_FILE</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="n">e</span>
+ <span class="k">return</span> <span class="kc">False</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">close_conn</span><span class="p">()</span>
+ <span class="k">return</span> <span class="kc">True</span></div>
+</pre></div>
+
+ </div>
+ <div class="articleComments">
+
+ </div>
+ </div>
+ <footer>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+
+ </p>
+ </div>
+ Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
+
+</footer>
+
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'../../../../',
+ VERSION:'',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true,
+ SOURCELINK_SUFFIX: '.txt'
+ };
+ </script>
+ <script type="text/javascript" src="../../../../_static/jquery.js"></script>
+ <script type="text/javascript" src="../../../../_static/underscore.js"></script>
+ <script type="text/javascript" src="../../../../_static/doctools.js"></script>
+
+
+
+
+
+ <script type="text/javascript" src="../../../../_static/js/theme.js"></script>
+
+
+
+
+ <script type="text/javascript">
+ jQuery(function () {
+ SphinxRtdTheme.StickyNav.enable();
+ });
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/11437c14/_modules/airflow/contrib/sensors/wasb_sensor.html
----------------------------------------------------------------------
diff --git a/_modules/airflow/contrib/sensors/wasb_sensor.html b/_modules/airflow/contrib/sensors/wasb_sensor.html
index a1a8d95..8fdd499 100644
--- a/_modules/airflow/contrib/sensors/wasb_sensor.html
+++ b/_modules/airflow/contrib/sensors/wasb_sensor.html
@@ -91,7 +91,7 @@
<li class="toctree-l1"><a class="reference internal" href="../../../../start.html">Quick Start</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../installation.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../tutorial.html">Tutorial</a></li>
-<li class="toctree-l1"><a class="reference internal" href="../../../../configuration.html">Configuration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../../howto/index.html">How-to Guides</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../ui.html">UI / Screenshots</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../concepts.html">Concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../profiling.html">Data Profiling</a></li>
@@ -99,8 +99,10 @@
<li class="toctree-l1"><a class="reference internal" href="../../../../scheduler.html">Scheduling & Triggers</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../plugins.html">Plugins</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../security.html">Security</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../../timezone.html">Time zones</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../api.html">Experimental Rest API</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../integration.html">Integration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../../lineage.html">Lineage</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../faq.html">FAQ</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../../code.html">API Reference</a></li>
</ul>
@@ -169,20 +171,25 @@
<h1>Source code for airflow.contrib.sensors.wasb_sensor</h1><div class="highlight"><pre>
<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
<span class="c1">#</span>
-<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
-<span class="c1"># you may not use this file except in compliance with the License.</span>
-<span class="c1"># You may obtain a copy of the License at</span>
-<span class="c1">#</span>
-<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
-<span class="c1">#</span>
-<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
-<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
-<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
-<span class="c1"># See the License for the specific language governing permissions and</span>
-<span class="c1"># limitations under the License.</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
<span class="c1">#</span>
<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.wasb_hook</span> <span class="k">import</span> <span class="n">WasbHook</span>
-<span class="kn">from</span> <span class="nn">airflow.operators.sensors</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/11437c14/_modules/airflow/executors/celery_executor.html
----------------------------------------------------------------------
diff --git a/_modules/airflow/executors/celery_executor.html b/_modules/airflow/executors/celery_executor.html
index 9601c12..b787b3e 100644
--- a/_modules/airflow/executors/celery_executor.html
+++ b/_modules/airflow/executors/celery_executor.html
@@ -13,6 +13,8 @@
+
+
@@ -30,6 +32,9 @@
+ <link rel="index" title="Index"
+ href="../../../genindex.html"/>
+ <link rel="search" title="Search" href="../../../search.html"/>
<link rel="top" title="Airflow Documentation" href="../../../index.html"/>
<link rel="up" title="Module code" href="../../index.html"/>
@@ -40,6 +45,7 @@
<body class="wy-body-for-nav" role="document">
+
<div class="wy-grid-for-nav">
@@ -76,13 +82,16 @@
- <ul>
+
+
+
+ <ul>
<li class="toctree-l1"><a class="reference internal" href="../../../project.html">Project</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../license.html">License</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../start.html">Quick Start</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../installation.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../tutorial.html">Tutorial</a></li>
-<li class="toctree-l1"><a class="reference internal" href="../../../configuration.html">Configuration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../howto/index.html">How-to Guides</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../ui.html">UI / Screenshots</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../concepts.html">Concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../profiling.html">Data Profiling</a></li>
@@ -90,6 +99,10 @@
<li class="toctree-l1"><a class="reference internal" href="../../../scheduler.html">Scheduling & Triggers</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../plugins.html">Plugins</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../security.html">Security</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../timezone.html">Time zones</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../api.html">Experimental Rest API</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../integration.html">Integration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../../../lineage.html">Lineage</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../faq.html">FAQ</a></li>
<li class="toctree-l1"><a class="reference internal" href="../../../code.html">API Reference</a></li>
</ul>
@@ -104,8 +117,10 @@
<nav class="wy-nav-top" role="navigation" aria-label="top navigation">
- <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
- <a href="../../../index.html">Airflow</a>
+
+ <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+ <a href="../../../index.html">Airflow</a>
+
</nav>
@@ -118,19 +133,36 @@
+
+
+
+
+
+
+
+
+
+
<div role="navigation" aria-label="breadcrumbs navigation">
+
<ul class="wy-breadcrumbs">
- <li><a href="../../../index.html">Docs</a> »</li>
-
+
+ <li><a href="../../../index.html">Docs</a> »</li>
+
<li><a href="../../index.html">Module code</a> »</li>
-
- <li>airflow.executors.celery_executor</li>
+
+ <li>airflow.executors.celery_executor</li>
+
+
<li class="wy-breadcrumbs-aside">
-
+
</li>
+
</ul>
+
+
<hr/>
</div>
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
@@ -139,66 +171,72 @@
<h1>Source code for airflow.executors.celery_executor</h1><div class="highlight"><pre>
<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
<span class="c1">#</span>
-<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
-<span class="c1"># you may not use this file except in compliance with the License.</span>
-<span class="c1"># You may obtain a copy of the License at</span>
-<span class="c1">#</span>
-<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
-<span class="c1">#</span>
-<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
-<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
-<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
-<span class="c1"># See the License for the specific language governing permissions and</span>
-<span class="c1"># limitations under the License.</span>
-
-<span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">object</span>
-<span class="kn">import</span> <span class="nn">logging</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+
<span class="kn">import</span> <span class="nn">subprocess</span>
<span class="kn">import</span> <span class="nn">time</span>
+<span class="kn">import</span> <span class="nn">os</span>
-<span class="kn">from</span> <span class="nn">celery</span> <span class="kn">import</span> <span class="n">Celery</span>
-<span class="kn">from</span> <span class="nn">celery</span> <span class="kn">import</span> <span class="n">states</span> <span class="k">as</span> <span class="n">celery_states</span>
+<span class="kn">from</span> <span class="nn">celery</span> <span class="k">import</span> <span class="n">Celery</span>
+<span class="kn">from</span> <span class="nn">celery</span> <span class="k">import</span> <span class="n">states</span> <span class="k">as</span> <span class="n">celery_states</span>
-<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span>
-<span class="kn">from</span> <span class="nn">airflow.executors.base_executor</span> <span class="kn">import</span> <span class="n">BaseExecutor</span>
-<span class="kn">from</span> <span class="nn">airflow</span> <span class="kn">import</span> <span class="n">configuration</span>
+<span class="kn">from</span> <span class="nn">airflow.config_templates.default_celery</span> <span class="k">import</span> <span class="n">DEFAULT_CELERY_CONFIG</span>
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">airflow.executors.base_executor</span> <span class="k">import</span> <span class="n">BaseExecutor</span>
+<span class="kn">from</span> <span class="nn">airflow</span> <span class="k">import</span> <span class="n">configuration</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="k">import</span> <span class="n">LoggingMixin</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.module_loading</span> <span class="k">import</span> <span class="n">import_string</span>
-<span class="n">PARALLELISM</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'PARALLELISM'</span><span class="p">)</span>
+<span class="n">PARALLELISM</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'core'</span><span class="p">,</span> <span class="s1">'PARALLELISM'</span><span class="p">)</span>
<span class="sd">'''</span>
<span class="sd">To start the celery worker, run the command:</span>
<span class="sd">airflow worker</span>
<span class="sd">'''</span>
-<span class="n">DEFAULT_QUEUE</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'DEFAULT_QUEUE'</span><span class="p">)</span>
-
-
-<span class="k">class</span> <span class="nc">CeleryConfig</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
- <span class="n">CELERY_ACCEPT_CONTENT</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'json'</span><span class="p">,</span> <span class="s1">'pickle'</span><span class="p">]</span>
- <span class="n">CELERYD_PREFETCH_MULTIPLIER</span> <span class="o">=</span> <span class="mi">1</span>
- <span class="n">CELERY_ACKS_LATE</span> <span class="o">=</span> <span class="bp">True</span>
- <span class="n">BROKER_URL</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'BROKER_URL'</span><span class="p">)</span>
- <span class="n">CELERY_RESULT_BACKEND</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'CELERY_RESULT_BACKEND'</span><span class="p">)</span>
- <span class="n">CELERYD_CONCURRENCY</span> <span class="o">=</span> <span class="n">configuration</span><span class="o">.</span><span class="n">getint</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'CELERYD_CONCURRENCY'</span><span class="p">)</span>
- <span class="n">CELERY_DEFAULT_QUEUE</span> <span class="o">=</span> <span class="n">DEFAULT_QUEUE</span>
- <span class="n">CELERY_DEFAULT_EXCHANGE</span> <span class="o">=</span> <span class="n">DEFAULT_QUEUE</span>
+<span class="k">if</span> <span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">has_option</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'celery_config_options'</span><span class="p">):</span>
+ <span class="n">celery_configuration</span> <span class="o">=</span> <span class="n">import_string</span><span class="p">(</span>
+ <span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'celery_config_options'</span><span class="p">)</span>
+ <span class="p">)</span>
+<span class="k">else</span><span class="p">:</span>
+ <span class="n">celery_configuration</span> <span class="o">=</span> <span class="n">DEFAULT_CELERY_CONFIG</span>
<span class="n">app</span> <span class="o">=</span> <span class="n">Celery</span><span class="p">(</span>
- <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'CELERY_APP_NAME'</span><span class="p">),</span>
- <span class="n">config_source</span><span class="o">=</span><span class="n">CeleryConfig</span><span class="p">)</span>
+ <span class="n">configuration</span><span class="o">.</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'celery'</span><span class="p">,</span> <span class="s1">'CELERY_APP_NAME'</span><span class="p">),</span>
+ <span class="n">config_source</span><span class="o">=</span><span class="n">celery_configuration</span><span class="p">)</span>
-<span class="nd">@app.task</span>
+<span class="nd">@app</span><span class="o">.</span><span class="n">task</span>
<span class="k">def</span> <span class="nf">execute_command</span><span class="p">(</span><span class="n">command</span><span class="p">):</span>
- <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Executing command in Celery "</span> <span class="o">+</span> <span class="n">command</span><span class="p">)</span>
+ <span class="n">log</span> <span class="o">=</span> <span class="n">LoggingMixin</span><span class="p">()</span><span class="o">.</span><span class="n">log</span>
+ <span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Executing command in Celery: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">command</span><span class="p">)</span>
+ <span class="n">env</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
<span class="k">try</span><span class="p">:</span>
- <span class="n">subprocess</span><span class="o">.</span><span class="n">check_call</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="n">shell</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+ <span class="n">subprocess</span><span class="o">.</span><span class="n">check_call</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="n">shell</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">stderr</span><span class="o">=</span><span class="n">subprocess</span><span class="o">.</span><span class="n">STDOUT</span><span class="p">,</span>
+ <span class="n">close_fds</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">env</span><span class="o">=</span><span class="n">env</span><span class="p">)</span>
<span class="k">except</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">CalledProcessError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
- <span class="n">logging</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+ <span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s1">'execute_command encountered a CalledProcessError'</span><span class="p">)</span>
+ <span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">output</span><span class="p">)</span>
+
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'Celery command failed'</span><span class="p">)</span>
-<div class="viewcode-block" id="CeleryExecutor"><a class="viewcode-back" href="../../../code.html#airflow.executors.CeleryExecutor">[docs]</a><span class="k">class</span> <span class="nc">CeleryExecutor</span><span class="p">(</span><span class="n">BaseExecutor</span><span class="p">):</span>
+<div class="viewcode-block" id="CeleryExecutor"><a class="viewcode-back" href="../../../code.html#airflow.executors.celery_executor.CeleryExecutor">[docs]</a><span class="k">class</span> <span class="nc">CeleryExecutor</span><span class="p">(</span><span class="n">BaseExecutor</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> CeleryExecutor is recommended for production use of Airflow. It allows</span>
<span class="sd"> distributing the execution of task instances to multiple worker nodes.</span>
@@ -207,51 +245,57 @@
<span class="sd"> vast amounts of messages, while providing operations with the tools</span>
<span class="sd"> required to maintain such a system.</span>
<span class="sd"> """</span>
-
<span class="k">def</span> <span class="nf">start</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">tasks</span> <span class="o">=</span> <span class="p">{}</span>
<span class="bp">self</span><span class="o">.</span><span class="n">last_state</span> <span class="o">=</span> <span class="p">{}</span>
- <span class="k">def</span> <span class="nf">execute_async</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">command</span><span class="p">,</span> <span class="n">queue</span><span class="o">=</span><span class="n">DEFAULT_QUEUE</span><span class="p">):</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> <span class="s2">"[celery] queuing {key} through celery, "</span>
- <span class="s2">"queue={queue}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span>
+ <span class="k">def</span> <span class="nf">execute_async</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">command</span><span class="p">,</span>
+ <span class="n">queue</span><span class="o">=</span><span class="n">DEFAULT_CELERY_CONFIG</span><span class="p">[</span><span class="s1">'task_default_queue'</span><span class="p">],</span>
+ <span class="n">executor_config</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> <span class="s2">"[celery] queuing </span><span class="si">{key}</span><span class="s2"> through celery, "</span>
+ <span class="s2">"queue=</span><span class="si">{queue}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">execute_command</span><span class="o">.</span><span class="n">apply_async</span><span class="p">(</span>
<span class="n">args</span><span class="o">=</span><span class="p">[</span><span class="n">command</span><span class="p">],</span> <span class="n">queue</span><span class="o">=</span><span class="n">queue</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">PENDING</span>
<span class="k">def</span> <span class="nf">sync</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
-
- <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span>
- <span class="s2">"Inquiring about {} celery task(s)"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">)))</span>
- <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">async</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="o">.</span><span class="n">items</span><span class="p">()):</span>
- <span class="n">state</span> <span class="o">=</span> <span class="n">async</span><span class="o">.</span><span class="n">state</span>
- <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">!=</span> <span class="n">state</span><span class="p">:</span>
- <span class="k">if</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">:</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">success</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">elif</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">FAILURE</span><span class="p">:</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">fail</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">elif</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">REVOKED</span><span class="p">:</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">fail</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
- <span class="k">else</span><span class="p">:</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Unexpected state: "</span> <span class="o">+</span> <span class="n">async</span><span class="o">.</span><span class="n">state</span><span class="p">)</span>
- <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">async</span><span class="o">.</span><span class="n">state</span>
-
- <span class="k">def</span> <span class="nf">end</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">synchronous</span><span class="o">=</span><span class="bp">False</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Inquiring about </span><span class="si">%s</span><span class="s2"> celery task(s)"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">))</span>
+ <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="k">async</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="o">.</span><span class="n">items</span><span class="p">()):</span>
+ <span class="k">try</span><span class="p">:</span>
+ <span class="n">state</span> <span class="o">=</span> <span class="k">async</span><span class="o">.</span><span class="n">state</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">!=</span> <span class="n">state</span><span class="p">:</span>
+ <span class="k">if</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">success</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">elif</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">FAILURE</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">fail</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">elif</span> <span class="n">state</span> <span class="o">==</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">REVOKED</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">fail</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Unexpected state: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="k">async</span><span class="o">.</span><span class="n">state</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">last_state</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="k">async</span><span class="o">.</span><span class="n">state</span>
+ <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"Error syncing the celery executor, ignoring it:"</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+
+ <span class="k">def</span> <span class="nf">end</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">synchronous</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="n">synchronous</span><span class="p">:</span>
<span class="k">while</span> <span class="nb">any</span><span class="p">([</span>
- <span class="n">async</span><span class="o">.</span><span class="n">state</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">READY_STATES</span>
- <span class="k">for</span> <span class="n">async</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="o">.</span><span class="n">values</span><span class="p">()]):</span>
+ <span class="k">async</span><span class="o">.</span><span class="n">state</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">celery_states</span><span class="o">.</span><span class="n">READY_STATES</span>
+ <span class="k">for</span> <span class="k">async</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">tasks</span><span class="o">.</span><span class="n">values</span><span class="p">()]):</span>
<span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">sync</span><span class="p">()</span></div>
</pre></div>
</div>
+ <div class="articleComments">
+
+ </div>
</div>
<footer>
@@ -284,7 +328,8 @@
VERSION:'',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'.html',
- HAS_SOURCE: true
+ HAS_SOURCE: true,
+ SOURCELINK_SUFFIX: '.txt'
};
</script>
<script type="text/javascript" src="../../../_static/jquery.js"></script>