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<h1>Source code for airflow.contrib.executors.mesos_executor</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"># &quot;License&quot;); 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"># &quot;AS IS&quot; 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">future</span> <span class="k">import</span> <span class="n">standard_library</span>
<span class="kn">from</span> <span class="nn">builtins</span> <span class="k">import</span> <span class="nb">str</span>
<span class="kn">from</span> <span class="nn">queue</span> <span class="k">import</span> <span class="n">Queue</span>
<span class="kn">import</span> <span class="nn">mesos.interface</span>
<span class="kn">from</span> <span class="nn">mesos.interface</span> <span class="k">import</span> <span class="n">mesos_pb2</span>
<span class="kn">import</span> <span class="nn">mesos.native</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.executors.base_executor</span> <span class="k">import</span> <span class="n">BaseExecutor</span>
<span class="kn">from</span> <span class="nn">airflow.settings</span> <span class="k">import</span> <span class="n">Session</span>
<span class="kn">from</span> <span class="nn">airflow.utils.state</span> <span class="k">import</span> <span class="n">State</span>
<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
<span class="n">standard_library</span><span class="o">.</span><span class="n">install_aliases</span><span class="p">()</span>
<div class="viewcode-block" id="DEFAULT_FRAMEWORK_NAME"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.DEFAULT_FRAMEWORK_NAME">[docs]</a><span class="n">DEFAULT_FRAMEWORK_NAME</span> <span class="o">=</span> <span class="s1">&#39;Airflow&#39;</span></div>
<div class="viewcode-block" id="FRAMEWORK_CONNID_PREFIX"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.FRAMEWORK_CONNID_PREFIX">[docs]</a><span class="n">FRAMEWORK_CONNID_PREFIX</span> <span class="o">=</span> <span class="s1">&#39;mesos_framework_&#39;</span></div>
<div class="viewcode-block" id="get_framework_name"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.get_framework_name">[docs]</a><span class="k">def</span> <span class="nf">get_framework_name</span><span class="p">():</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;FRAMEWORK_NAME&#39;</span><span class="p">):</span>
<span class="k">return</span> <span class="n">DEFAULT_FRAMEWORK_NAME</span>
<span class="k">return</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;FRAMEWORK_NAME&#39;</span><span class="p">)</span></div>
<span class="c1"># AirflowMesosScheduler, implements Mesos Scheduler interface</span>
<span class="c1"># To schedule airflow jobs on mesos</span>
<div class="viewcode-block" id="AirflowMesosScheduler"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler">[docs]</a><span class="k">class</span> <span class="nc">AirflowMesosScheduler</span><span class="p">(</span><span class="n">mesos</span><span class="o">.</span><span class="n">interface</span><span class="o">.</span><span class="n">Scheduler</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Airflow Mesos scheduler implements mesos scheduler interface</span>
<span class="sd"> to schedule airflow tasks on mesos.</span>
<span class="sd"> Basically, it schedules a command like</span>
<span class="sd"> &#39;airflow run &lt;dag_id&gt; &lt;task_instance_id&gt; &lt;start_date&gt; --local -p=&lt;pickle&gt;&#39;</span>
<span class="sd"> to run on a mesos slave.</span>
<span class="sd"> &quot;&quot;&quot;</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">task_queue</span><span class="p">,</span>
<span class="n">result_queue</span><span class="p">,</span>
<span class="n">task_cpu</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span>
<span class="n">task_mem</span><span class="o">=</span><span class="mi">256</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span> <span class="o">=</span> <span class="n">task_queue</span>
<span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span> <span class="o">=</span> <span class="n">result_queue</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_cpu</span> <span class="o">=</span> <span class="n">task_cpu</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_mem</span> <span class="o">=</span> <span class="n">task_mem</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_counter</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_key_map</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">if</span> <span class="n">configuration</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DOCKER_IMAGE_SLAVE&#39;</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mesos_slave_docker_image</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DOCKER_IMAGE_SLAVE&#39;</span>
<span class="p">)</span>
<div class="viewcode-block" id="AirflowMesosScheduler.registered"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.registered">[docs]</a> <span class="k">def</span> <span class="nf">registered</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">frameworkId</span><span class="p">,</span> <span class="n">masterInfo</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">&quot;AirflowScheduler registered to Mesos with framework ID </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span>
<span class="n">frameworkId</span><span class="o">.</span><span class="n">value</span><span class="p">)</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">getboolean</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;CHECKPOINT&#39;</span><span class="p">)</span> <span class="ow">and</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;FAILOVER_TIMEOUT&#39;</span><span class="p">):</span>
<span class="c1"># Import here to work around a circular import error</span>
<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="k">import</span> <span class="n">Connection</span>
<span class="c1"># Update the Framework ID in the database.</span>
<span class="n">session</span> <span class="o">=</span> <span class="n">Session</span><span class="p">()</span>
<span class="n">conn_id</span> <span class="o">=</span> <span class="n">FRAMEWORK_CONNID_PREFIX</span> <span class="o">+</span> <span class="n">get_framework_name</span><span class="p">()</span>
<span class="n">connection</span> <span class="o">=</span> <span class="n">Session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">Connection</span><span class="p">)</span><span class="o">.</span><span class="n">filter_by</span><span class="p">(</span><span class="n">conn_id</span><span class="o">=</span><span class="n">conn_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span>
<span class="k">if</span> <span class="n">connection</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">connection</span> <span class="o">=</span> <span class="n">Connection</span><span class="p">(</span><span class="n">conn_id</span><span class="o">=</span><span class="n">conn_id</span><span class="p">,</span> <span class="n">conn_type</span><span class="o">=</span><span class="s1">&#39;mesos_framework-id&#39;</span><span class="p">,</span>
<span class="n">extra</span><span class="o">=</span><span class="n">frameworkId</span><span class="o">.</span><span class="n">value</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">connection</span><span class="o">.</span><span class="n">extra</span> <span class="o">=</span> <span class="n">frameworkId</span><span class="o">.</span><span class="n">value</span>
<span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">connection</span><span class="p">)</span>
<span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
<span class="n">Session</span><span class="o">.</span><span class="n">remove</span><span class="p">()</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.reregistered"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.reregistered">[docs]</a> <span class="k">def</span> <span class="nf">reregistered</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">masterInfo</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">&quot;AirflowScheduler re-registered to mesos&quot;</span><span class="p">)</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.disconnected"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.disconnected">[docs]</a> <span class="k">def</span> <span class="nf">disconnected</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</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">&quot;AirflowScheduler disconnected from mesos&quot;</span><span class="p">)</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.offerRescinded"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.offerRescinded">[docs]</a> <span class="k">def</span> <span class="nf">offerRescinded</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">offerId</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">&quot;AirflowScheduler offer </span><span class="si">%s</span><span class="s2"> rescinded&quot;</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">offerId</span><span class="p">))</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.frameworkMessage"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.frameworkMessage">[docs]</a> <span class="k">def</span> <span class="nf">frameworkMessage</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">executorId</span><span class="p">,</span> <span class="n">slaveId</span><span class="p">,</span> <span class="n">message</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">&quot;AirflowScheduler received framework message </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">message</span><span class="p">)</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.executorLost"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.executorLost">[docs]</a> <span class="k">def</span> <span class="nf">executorLost</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">executorId</span><span class="p">,</span> <span class="n">slaveId</span><span class="p">,</span> <span class="n">status</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">warning</span><span class="p">(</span><span class="s2">&quot;AirflowScheduler executor </span><span class="si">%s</span><span class="s2"> lost&quot;</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">executorId</span><span class="p">))</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.slaveLost"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.slaveLost">[docs]</a> <span class="k">def</span> <span class="nf">slaveLost</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">slaveId</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">warning</span><span class="p">(</span><span class="s2">&quot;AirflowScheduler slave </span><span class="si">%s</span><span class="s2"> lost&quot;</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">slaveId</span><span class="p">))</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.error"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.error">[docs]</a> <span class="k">def</span> <span class="nf">error</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">message</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">&quot;AirflowScheduler driver aborted </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">message</span><span class="p">)</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">&quot;AirflowScheduler driver aborted </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="n">message</span><span class="p">)</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.resourceOffers"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.resourceOffers">[docs]</a> <span class="k">def</span> <span class="nf">resourceOffers</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">offers</span><span class="p">):</span>
<span class="k">for</span> <span class="n">offer</span> <span class="ow">in</span> <span class="n">offers</span><span class="p">:</span>
<span class="n">tasks</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">offerCpus</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">offerMem</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">for</span> <span class="n">resource</span> <span class="ow">in</span> <span class="n">offer</span><span class="o">.</span><span class="n">resources</span><span class="p">:</span>
<span class="k">if</span> <span class="n">resource</span><span class="o">.</span><span class="n">name</span> <span class="o">==</span> <span class="s2">&quot;cpus&quot;</span><span class="p">:</span>
<span class="n">offerCpus</span> <span class="o">+=</span> <span class="n">resource</span><span class="o">.</span><span class="n">scalar</span><span class="o">.</span><span class="n">value</span>
<span class="k">elif</span> <span class="n">resource</span><span class="o">.</span><span class="n">name</span> <span class="o">==</span> <span class="s2">&quot;mem&quot;</span><span class="p">:</span>
<span class="n">offerMem</span> <span class="o">+=</span> <span class="n">resource</span><span class="o">.</span><span class="n">scalar</span><span class="o">.</span><span class="n">value</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">&quot;Received offer </span><span class="si">%s</span><span class="s2"> with cpus: </span><span class="si">%s</span><span class="s2"> and mem: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span>
<span class="n">offer</span><span class="o">.</span><span class="n">id</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="n">offerCpus</span><span class="p">,</span> <span class="n">offerMem</span><span class="p">)</span>
<span class="n">remainingCpus</span> <span class="o">=</span> <span class="n">offerCpus</span>
<span class="n">remainingMem</span> <span class="o">=</span> <span class="n">offerMem</span>
<span class="k">while</span> <span class="p">(</span><span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="o">.</span><span class="n">empty</span><span class="p">())</span> <span class="ow">and</span> \
<span class="n">remainingCpus</span> <span class="o">&gt;=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_cpu</span> <span class="ow">and</span> \
<span class="n">remainingMem</span> <span class="o">&gt;=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_mem</span><span class="p">:</span>
<span class="n">key</span><span class="p">,</span> <span class="n">cmd</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="n">tid</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_counter</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_counter</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_key_map</span><span class="p">[</span><span class="nb">str</span><span class="p">(</span><span class="n">tid</span><span class="p">)]</span> <span class="o">=</span> <span class="n">key</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">&quot;Launching task </span><span class="si">%d</span><span class="s2"> using offer </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">tid</span><span class="p">,</span> <span class="n">offer</span><span class="o">.</span><span class="n">id</span><span class="o">.</span><span class="n">value</span><span class="p">)</span>
<span class="n">task</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TaskInfo</span><span class="p">()</span>
<span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">tid</span><span class="p">)</span>
<span class="n">task</span><span class="o">.</span><span class="n">slave_id</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="n">offer</span><span class="o">.</span><span class="n">slave_id</span><span class="o">.</span><span class="n">value</span>
<span class="n">task</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="s2">&quot;AirflowTask </span><span class="si">%d</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="n">tid</span>
<span class="n">cpus</span> <span class="o">=</span> <span class="n">task</span><span class="o">.</span><span class="n">resources</span><span class="o">.</span><span class="n">add</span><span class="p">()</span>
<span class="n">cpus</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="s2">&quot;cpus&quot;</span>
<span class="n">cpus</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">Value</span><span class="o">.</span><span class="n">SCALAR</span>
<span class="n">cpus</span><span class="o">.</span><span class="n">scalar</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_cpu</span>
<span class="n">mem</span> <span class="o">=</span> <span class="n">task</span><span class="o">.</span><span class="n">resources</span><span class="o">.</span><span class="n">add</span><span class="p">()</span>
<span class="n">mem</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="s2">&quot;mem&quot;</span>
<span class="n">mem</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">Value</span><span class="o">.</span><span class="n">SCALAR</span>
<span class="n">mem</span><span class="o">.</span><span class="n">scalar</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_mem</span>
<span class="n">command</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">CommandInfo</span><span class="p">()</span>
<span class="n">command</span><span class="o">.</span><span class="n">shell</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">command</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="s2">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">cmd</span><span class="p">)</span>
<span class="n">task</span><span class="o">.</span><span class="n">command</span><span class="o">.</span><span class="n">MergeFrom</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
<span class="c1"># If docker image for airflow is specified in config then pull that</span>
<span class="c1"># image before running the above airflow command</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">mesos_slave_docker_image</span><span class="p">:</span>
<span class="n">network</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">ContainerInfo</span><span class="o">.</span><span class="n">DockerInfo</span><span class="o">.</span><span class="n">Network</span><span class="o">.</span><span class="n">Value</span><span class="p">(</span><span class="s1">&#39;BRIDGE&#39;</span><span class="p">)</span>
<span class="n">docker</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">ContainerInfo</span><span class="o">.</span><span class="n">DockerInfo</span><span class="p">(</span>
<span class="n">image</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mesos_slave_docker_image</span><span class="p">,</span>
<span class="n">force_pull_image</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span>
<span class="n">network</span><span class="o">=</span><span class="n">network</span>
<span class="p">)</span>
<span class="n">container</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">ContainerInfo</span><span class="p">(</span>
<span class="nb">type</span><span class="o">=</span><span class="n">mesos_pb2</span><span class="o">.</span><span class="n">ContainerInfo</span><span class="o">.</span><span class="n">DOCKER</span><span class="p">,</span>
<span class="n">docker</span><span class="o">=</span><span class="n">docker</span>
<span class="p">)</span>
<span class="n">task</span><span class="o">.</span><span class="n">container</span><span class="o">.</span><span class="n">MergeFrom</span><span class="p">(</span><span class="n">container</span><span class="p">)</span>
<span class="n">tasks</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">task</span><span class="p">)</span>
<span class="n">remainingCpus</span> <span class="o">-=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_cpu</span>
<span class="n">remainingMem</span> <span class="o">-=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_mem</span>
<span class="n">driver</span><span class="o">.</span><span class="n">launchTasks</span><span class="p">(</span><span class="n">offer</span><span class="o">.</span><span class="n">id</span><span class="p">,</span> <span class="n">tasks</span><span class="p">)</span></div>
<div class="viewcode-block" id="AirflowMesosScheduler.statusUpdate"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.AirflowMesosScheduler.statusUpdate">[docs]</a> <span class="k">def</span> <span class="nf">statusUpdate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">driver</span><span class="p">,</span> <span class="n">update</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">&quot;Task </span><span class="si">%s</span><span class="s2"> is in state </span><span class="si">%s</span><span class="s2">, data </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span>
<span class="n">update</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TaskState</span><span class="o">.</span><span class="n">Name</span><span class="p">(</span><span class="n">update</span><span class="o">.</span><span class="n">state</span><span class="p">),</span> <span class="nb">str</span><span class="p">(</span><span class="n">update</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
<span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">key</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_key_map</span><span class="p">[</span><span class="n">update</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">value</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="c1"># The map may not contain an item if the framework re-registered</span>
<span class="c1"># after a failover.</span>
<span class="c1"># Discard these tasks.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">&quot;Unrecognised task key </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">update</span><span class="o">.</span><span class="n">task_id</span><span class="o">.</span><span class="n">value</span><span class="p">)</span>
<span class="k">return</span>
<span class="k">if</span> <span class="n">update</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TASK_FINISHED</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="o">.</span><span class="n">put</span><span class="p">((</span><span class="n">key</span><span class="p">,</span> <span class="n">State</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">task_queue</span><span class="o">.</span><span class="n">task_done</span><span class="p">()</span>
<span class="k">if</span> <span class="n">update</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TASK_LOST</span> <span class="ow">or</span> \
<span class="n">update</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TASK_KILLED</span> <span class="ow">or</span> \
<span class="n">update</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">TASK_FAILED</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="o">.</span><span class="n">put</span><span class="p">((</span><span class="n">key</span><span class="p">,</span> <span class="n">State</span><span class="o">.</span><span class="n">FAILED</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="o">.</span><span class="n">task_done</span><span class="p">()</span></div></div>
<div class="viewcode-block" id="MesosExecutor"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.MesosExecutor">[docs]</a><span class="k">class</span> <span class="nc">MesosExecutor</span><span class="p">(</span><span class="n">BaseExecutor</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> MesosExecutor allows distributing the execution of task</span>
<span class="sd"> instances to multiple mesos workers.</span>
<span class="sd"> Apache Mesos is a distributed systems kernel which abstracts</span>
<span class="sd"> CPU, memory, storage, and other compute resources away from</span>
<span class="sd"> machines (physical or virtual), enabling fault-tolerant and</span>
<span class="sd"> elastic distributed systems to easily be built and run effectively.</span>
<span class="sd"> See http://mesos.apache.org/</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="MesosExecutor.start"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.MesosExecutor.start">[docs]</a> <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">task_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">result_queue</span> <span class="o">=</span> <span class="n">Queue</span><span class="p">()</span>
<span class="n">framework</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">FrameworkInfo</span><span class="p">()</span>
<span class="n">framework</span><span class="o">.</span><span class="n">user</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;MASTER&#39;</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">&quot;Expecting mesos master URL for mesos executor&quot;</span><span class="p">)</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">&quot;mesos.master not provided for mesos executor&quot;</span><span class="p">)</span>
<span class="n">master</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;MASTER&#39;</span><span class="p">)</span>
<span class="n">framework</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">get_framework_name</span><span class="p">()</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;TASK_CPU&#39;</span><span class="p">):</span>
<span class="n">task_cpu</span> <span class="o">=</span> <span class="mi">1</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">task_cpu</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">getint</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;TASK_CPU&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;TASK_MEMORY&#39;</span><span class="p">):</span>
<span class="n">task_memory</span> <span class="o">=</span> <span class="mi">256</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">task_memory</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">getint</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;TASK_MEMORY&#39;</span><span class="p">)</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">getboolean</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;CHECKPOINT&#39;</span><span class="p">):</span>
<span class="n">framework</span><span class="o">.</span><span class="n">checkpoint</span> <span class="o">=</span> <span class="kc">True</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">get</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;FAILOVER_TIMEOUT&#39;</span><span class="p">):</span>
<span class="c1"># Import here to work around a circular import error</span>
<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="k">import</span> <span class="n">Connection</span>
<span class="c1"># Query the database to get the ID of the Mesos Framework, if available.</span>
<span class="n">conn_id</span> <span class="o">=</span> <span class="n">FRAMEWORK_CONNID_PREFIX</span> <span class="o">+</span> <span class="n">framework</span><span class="o">.</span><span class="n">name</span>
<span class="n">session</span> <span class="o">=</span> <span class="n">Session</span><span class="p">()</span>
<span class="n">connection</span> <span class="o">=</span> <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">Connection</span><span class="p">)</span><span class="o">.</span><span class="n">filter_by</span><span class="p">(</span><span class="n">conn_id</span><span class="o">=</span><span class="n">conn_id</span><span class="p">)</span><span class="o">.</span><span class="n">first</span><span class="p">()</span>
<span class="k">if</span> <span class="n">connection</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="c1"># Set the Framework ID to let the scheduler reconnect</span>
<span class="c1"># with running tasks.</span>
<span class="n">framework</span><span class="o">.</span><span class="n">id</span><span class="o">.</span><span class="n">value</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">extra</span>
<span class="n">framework</span><span class="o">.</span><span class="n">failover_timeout</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">getint</span><span class="p">(</span>
<span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;FAILOVER_TIMEOUT&#39;</span>
<span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">framework</span><span class="o">.</span><span class="n">checkpoint</span> <span class="o">=</span> <span class="kc">False</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">&#39;MesosFramework master : </span><span class="si">%s</span><span class="s1">, name : </span><span class="si">%s</span><span class="s1">, cpu : </span><span class="si">%s</span><span class="s1">, mem : </span><span class="si">%s</span><span class="s1">, checkpoint : </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span>
<span class="n">master</span><span class="p">,</span> <span class="n">framework</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
<span class="nb">str</span><span class="p">(</span><span class="n">task_cpu</span><span class="p">),</span> <span class="nb">str</span><span class="p">(</span><span class="n">task_memory</span><span class="p">),</span> <span class="nb">str</span><span class="p">(</span><span class="n">framework</span><span class="o">.</span><span class="n">checkpoint</span><span class="p">)</span>
<span class="p">)</span>
<span class="n">implicit_acknowledgements</span> <span class="o">=</span> <span class="mi">1</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">getboolean</span><span class="p">(</span><span class="s1">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;AUTHENTICATE&#39;</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DEFAULT_PRINCIPAL&#39;</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">&quot;Expecting authentication principal in the environment&quot;</span><span class="p">)</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span>
<span class="s2">&quot;mesos.default_principal not provided in authenticated mode&quot;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DEFAULT_SECRET&#39;</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">&quot;Expecting authentication secret in the environment&quot;</span><span class="p">)</span>
<span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span>
<span class="s2">&quot;mesos.default_secret not provided in authenticated mode&quot;</span><span class="p">)</span>
<span class="n">credential</span> <span class="o">=</span> <span class="n">mesos_pb2</span><span class="o">.</span><span class="n">Credential</span><span class="p">()</span>
<span class="n">credential</span><span class="o">.</span><span class="n">principal</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DEFAULT_PRINCIPAL&#39;</span><span class="p">)</span>
<span class="n">credential</span><span class="o">.</span><span class="n">secret</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">&#39;mesos&#39;</span><span class="p">,</span> <span class="s1">&#39;DEFAULT_SECRET&#39;</span><span class="p">)</span>
<span class="n">framework</span><span class="o">.</span><span class="n">principal</span> <span class="o">=</span> <span class="n">credential</span><span class="o">.</span><span class="n">principal</span>
<span class="n">driver</span> <span class="o">=</span> <span class="n">mesos</span><span class="o">.</span><span class="n">native</span><span class="o">.</span><span class="n">MesosSchedulerDriver</span><span class="p">(</span>
<span class="n">AirflowMesosScheduler</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="p">,</span>
<span class="n">task_cpu</span><span class="p">,</span>
<span class="n">task_memory</span><span class="p">),</span>
<span class="n">framework</span><span class="p">,</span>
<span class="n">master</span><span class="p">,</span>
<span class="n">implicit_acknowledgements</span><span class="p">,</span>
<span class="n">credential</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">framework</span><span class="o">.</span><span class="n">principal</span> <span class="o">=</span> <span class="s1">&#39;Airflow&#39;</span>
<span class="n">driver</span> <span class="o">=</span> <span class="n">mesos</span><span class="o">.</span><span class="n">native</span><span class="o">.</span><span class="n">MesosSchedulerDriver</span><span class="p">(</span>
<span class="n">AirflowMesosScheduler</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="p">,</span>
<span class="n">task_cpu</span><span class="p">,</span>
<span class="n">task_memory</span><span class="p">),</span>
<span class="n">framework</span><span class="p">,</span>
<span class="n">master</span><span class="p">,</span>
<span class="n">implicit_acknowledgements</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mesos_driver</span> <span class="o">=</span> <span class="n">driver</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mesos_driver</span><span class="o">.</span><span class="n">start</span><span class="p">()</span></div>
<div class="viewcode-block" id="MesosExecutor.execute_async"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.MesosExecutor.execute_async">[docs]</a> <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="kc">None</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">task_queue</span><span class="o">.</span><span class="n">put</span><span class="p">((</span><span class="n">key</span><span class="p">,</span> <span class="n">command</span><span class="p">))</span></div>
<div class="viewcode-block" id="MesosExecutor.sync"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.MesosExecutor.sync">[docs]</a> <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="k">while</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="o">.</span><span class="n">empty</span><span class="p">():</span>
<span class="n">results</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="o">.</span><span class="n">get</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">change_state</span><span class="p">(</span><span class="o">*</span><span class="n">results</span><span class="p">)</span></div>
<div class="viewcode-block" id="MesosExecutor.end"><a class="viewcode-back" href="../../../../_api/airflow/contrib/executors/mesos_executor/index.html#airflow.contrib.executors.mesos_executor.MesosExecutor.end">[docs]</a> <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="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="o">.</span><span class="n">join</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">mesos_driver</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span></div></div>
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