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| <h1>Source code for airflow.contrib.operators.ecs_operator</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">sys</span> |
| <span class="kn">import</span> <span class="nn">re</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.models</span> <span class="k">import</span> <span class="n">BaseOperator</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="k">import</span> <span class="n">apply_defaults</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.contrib.hooks.aws_hook</span> <span class="k">import</span> <span class="n">AwsHook</span> |
| |
| |
| <div class="viewcode-block" id="ECSOperator"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.operators.ecs_operator.ECSOperator">[docs]</a><span class="k">class</span> <span class="nc">ECSOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Execute a task on AWS EC2 Container Service</span> |
| |
| <span class="sd"> :param task_definition: the task definition name on EC2 Container Service</span> |
| <span class="sd"> :type task_definition: str</span> |
| <span class="sd"> :param cluster: the cluster name on EC2 Container Service</span> |
| <span class="sd"> :type cluster: str</span> |
| <span class="sd"> :param overrides: the same parameter that boto3 will receive (templated):</span> |
| <span class="sd"> http://boto3.readthedocs.org/en/latest/reference/services/ecs.html#ECS.Client.run_task</span> |
| <span class="sd"> :type overrides: dict</span> |
| <span class="sd"> :param aws_conn_id: connection id of AWS credentials / region name. If None,</span> |
| <span class="sd"> credential boto3 strategy will be used</span> |
| <span class="sd"> (http://boto3.readthedocs.io/en/latest/guide/configuration.html).</span> |
| <span class="sd"> :type aws_conn_id: str</span> |
| <span class="sd"> :param region_name: region name to use in AWS Hook.</span> |
| <span class="sd"> Override the region_name in connection (if provided)</span> |
| <span class="sd"> :type region_name: str</span> |
| <span class="sd"> :param launch_type: the launch type on which to run your task ('EC2' or 'FARGATE')</span> |
| <span class="sd"> :type launch_type: str</span> |
| <span class="sd"> """</span> |
| |
| <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#f0ede4'</span> |
| <span class="n">client</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="n">arn</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'overrides'</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">task_definition</span><span class="p">,</span> <span class="n">cluster</span><span class="p">,</span> <span class="n">overrides</span><span class="p">,</span> |
| <span class="n">aws_conn_id</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">region_name</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">launch_type</span><span class="o">=</span><span class="s1">'EC2'</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">ECSOperator</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">kwargs</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span> <span class="o">=</span> <span class="n">aws_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">region_name</span> <span class="o">=</span> <span class="n">region_name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_definition</span> <span class="o">=</span> <span class="n">task_definition</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cluster</span> <span class="o">=</span> <span class="n">cluster</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">overrides</span> <span class="o">=</span> <span class="n">overrides</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">launch_type</span> <span class="o">=</span> <span class="n">launch_type</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">hook</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_hook</span><span class="p">()</span> |
| |
| <div class="viewcode-block" id="ECSOperator.execute"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.operators.ecs_operator.ECSOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</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">'Running ECS Task - Task definition: </span><span class="si">%s</span><span class="s1"> - on cluster </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">task_definition</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cluster</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">'ECSOperator overrides: </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">overrides</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">client</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="o">.</span><span class="n">get_client_type</span><span class="p">(</span> |
| <span class="s1">'ecs'</span><span class="p">,</span> |
| <span class="n">region_name</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">region_name</span> |
| <span class="p">)</span> |
| |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">run_task</span><span class="p">(</span> |
| <span class="n">cluster</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">cluster</span><span class="p">,</span> |
| <span class="n">taskDefinition</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">task_definition</span><span class="p">,</span> |
| <span class="n">overrides</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">overrides</span><span class="p">,</span> |
| <span class="n">startedBy</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">owner</span><span class="p">,</span> |
| <span class="n">launchType</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">launch_type</span> |
| <span class="p">)</span> |
| |
| <span class="n">failures</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="s1">'failures'</span><span class="p">]</span> |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">failures</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">response</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">'ECS Task started: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">arn</span> <span class="o">=</span> <span class="n">response</span><span class="p">[</span><span class="s1">'tasks'</span><span class="p">][</span><span class="mi">0</span><span class="p">][</span><span class="s1">'taskArn'</span><span class="p">]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_wait_for_task_ended</span><span class="p">()</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_check_success_task</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">'ECS Task has been successfully executed: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span></div> |
| |
| <span class="k">def</span> <span class="nf">_wait_for_task_ended</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="n">waiter</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">get_waiter</span><span class="p">(</span><span class="s1">'tasks_stopped'</span><span class="p">)</span> |
| <span class="n">waiter</span><span class="o">.</span><span class="n">config</span><span class="o">.</span><span class="n">max_attempts</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">maxsize</span> <span class="c1"># timeout is managed by airflow</span> |
| <span class="n">waiter</span><span class="o">.</span><span class="n">wait</span><span class="p">(</span> |
| <span class="n">cluster</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">cluster</span><span class="p">,</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">arn</span><span class="p">]</span> |
| <span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">_check_success_task</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">describe_tasks</span><span class="p">(</span> |
| <span class="n">cluster</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">cluster</span><span class="p">,</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">arn</span><span class="p">]</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">'ECS Task stopped, check status: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'failures'</span><span class="p">,</span> <span class="p">[]))</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">response</span><span class="p">)</span> |
| |
| <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="n">response</span><span class="p">[</span><span class="s1">'tasks'</span><span class="p">]:</span> |
| <span class="c1"># This is a `stoppedReason` that indicates a task has not</span> |
| <span class="c1"># successfully finished, but there is no other indication of failure</span> |
| <span class="c1"># in the response.</span> |
| <span class="c1"># See, https://docs.aws.amazon.com/AmazonECS/latest/developerguide/stopped-task-errors.html # noqa E501</span> |
| <span class="k">if</span> <span class="n">re</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="sa">r</span><span class="s1">'Host EC2 \(instance .+?\) (stopped|terminated)\.'</span><span class="p">,</span> |
| <span class="n">task</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'stoppedReason'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)):</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s1">'The task was stopped because the host instance terminated: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'stoppedReason'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)))</span> |
| <span class="n">containers</span> <span class="o">=</span> <span class="n">task</span><span class="p">[</span><span class="s1">'containers'</span><span class="p">]</span> |
| <span class="k">for</span> <span class="n">container</span> <span class="ow">in</span> <span class="n">containers</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">container</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'lastStatus'</span><span class="p">)</span> <span class="o">==</span> <span class="s1">'STOPPED'</span> <span class="ow">and</span> \ |
| <span class="n">container</span><span class="p">[</span><span class="s1">'exitCode'</span><span class="p">]</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s1">'This task is not in success state </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">task</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="n">container</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'lastStatus'</span><span class="p">)</span> <span class="o">==</span> <span class="s1">'PENDING'</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'This task is still pending </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">task</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="s1">'error'</span> <span class="ow">in</span> <span class="n">container</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'reason'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">():</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s1">'This containers encounter an error during launching : </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="n">container</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'reason'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()))</span> |
| |
| <span class="k">def</span> <span class="nf">get_hook</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">return</span> <span class="n">AwsHook</span><span class="p">(</span> |
| <span class="n">aws_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="ECSOperator.on_kill"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.operators.ecs_operator.ECSOperator.on_kill">[docs]</a> <span class="k">def</span> <span class="nf">on_kill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">stop_task</span><span class="p">(</span> |
| <span class="n">cluster</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">cluster</span><span class="p">,</span> |
| <span class="n">task</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">arn</span><span class="p">,</span> |
| <span class="n">reason</span><span class="o">=</span><span class="s1">'Task killed by the user'</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="n">response</span><span class="p">)</span></div></div> |
| </pre></div> |
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