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| <h1>Source code for airflow.executors.kubernetes_executor</h1><div class="highlight"><pre> |
| <span></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="sd">"""</span> |
| <span class="sd">KubernetesExecutor</span> |
| |
| <span class="sd">.. seealso::</span> |
| <span class="sd"> For more information on how the KubernetesExecutor works, take a look at the guide:</span> |
| <span class="sd"> :ref:`executor:KubernetesExecutor`</span> |
| <span class="sd">"""</span> |
| |
| <span class="kn">import</span> <span class="nn">functools</span> |
| <span class="kn">import</span> <span class="nn">json</span> |
| <span class="kn">import</span> <span class="nn">multiprocessing</span> |
| <span class="kn">import</span> <span class="nn">time</span> |
| <span class="kn">from</span> <span class="nn">queue</span> <span class="kn">import</span> <span class="n">Empty</span><span class="p">,</span> <span class="n">Queue</span> <span class="c1"># pylint: disable=unused-import</span> |
| <span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">Any</span><span class="p">,</span> <span class="n">Dict</span><span class="p">,</span> <span class="n">List</span><span class="p">,</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">Tuple</span> |
| |
| <span class="kn">import</span> <span class="nn">kubernetes</span> |
| <span class="kn">from</span> <span class="nn">dateutil</span> <span class="kn">import</span> <span class="n">parser</span> |
| <span class="kn">from</span> <span class="nn">kubernetes</span> <span class="kn">import</span> <span class="n">client</span><span class="p">,</span> <span class="n">watch</span> |
| <span class="kn">from</span> <span class="nn">kubernetes.client</span> <span class="kn">import</span> <span class="n">Configuration</span><span class="p">,</span> <span class="n">models</span> <span class="k">as</span> <span class="n">k8s</span> |
| <span class="kn">from</span> <span class="nn">kubernetes.client.rest</span> <span class="kn">import</span> <span class="n">ApiException</span> |
| <span class="kn">from</span> <span class="nn">urllib3.exceptions</span> <span class="kn">import</span> <span class="n">ReadTimeoutError</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">NOT_STARTED_MESSAGE</span><span class="p">,</span> <span class="n">BaseExecutor</span><span class="p">,</span> <span class="n">CommandType</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes</span> <span class="kn">import</span> <span class="n">pod_generator</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes.kube_client</span> <span class="kn">import</span> <span class="n">get_kube_client</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes.kube_config</span> <span class="kn">import</span> <span class="n">KubeConfig</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes.kubernetes_helper_functions</span> <span class="kn">import</span> <span class="n">create_pod_id</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes.pod_generator</span> <span class="kn">import</span> <span class="n">MAX_POD_ID_LEN</span><span class="p">,</span> <span class="n">PodGenerator</span> |
| <span class="kn">from</span> <span class="nn">airflow.kubernetes.pod_launcher</span> <span class="kn">import</span> <span class="n">PodLauncher</span> |
| <span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">TaskInstance</span> |
| <span class="kn">from</span> <span class="nn">airflow.models.taskinstance</span> <span class="kn">import</span> <span class="n">TaskInstanceKey</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="kn">import</span> <span class="n">LoggingMixin</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.session</span> <span class="kn">import</span> <span class="n">provide_session</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.state</span> <span class="kn">import</span> <span class="n">State</span> |
| |
| <span class="c1"># TaskInstance key, command, configuration, pod_template_file</span> |
| <div class="viewcode-block" id="KubernetesJobType"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobType">[docs]</a><span class="n">KubernetesJobType</span> <span class="o">=</span> <span class="n">Tuple</span><span class="p">[</span><span class="n">TaskInstanceKey</span><span class="p">,</span> <span class="n">CommandType</span><span class="p">,</span> <span class="n">Any</span><span class="p">,</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span></div> |
| |
| <span class="c1"># key, state, pod_id, namespace, resource_version</span> |
| <div class="viewcode-block" id="KubernetesResultsType"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesResultsType">[docs]</a><span class="n">KubernetesResultsType</span> <span class="o">=</span> <span class="n">Tuple</span><span class="p">[</span><span class="n">TaskInstanceKey</span><span class="p">,</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> <span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span></div> |
| |
| <span class="c1"># pod_id, namespace, state, annotations, resource_version</span> |
| <div class="viewcode-block" id="KubernetesWatchType"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesWatchType">[docs]</a><span class="n">KubernetesWatchType</span> <span class="o">=</span> <span class="n">Tuple</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">,</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">],</span> <span class="nb">str</span><span class="p">]</span></div> |
| |
| |
| <div class="viewcode-block" id="ResourceVersion"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.ResourceVersion">[docs]</a><span class="k">class</span> <span class="nc">ResourceVersion</span><span class="p">:</span> |
| <span class="sd">"""Singleton for tracking resourceVersion from Kubernetes"""</span> |
| |
| <div class="viewcode-block" id="ResourceVersion._instance"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.ResourceVersion._instance">[docs]</a> <span class="n">_instance</span> <span class="o">=</span> <span class="kc">None</span></div> |
| <div class="viewcode-block" id="ResourceVersion.resource_version"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.ResourceVersion.resource_version">[docs]</a> <span class="n">resource_version</span> <span class="o">=</span> <span class="s2">"0"</span></div> |
| |
| <div class="viewcode-block" id="ResourceVersion.__new__"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.ResourceVersion.__new__">[docs]</a> <span class="k">def</span> <span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_instance</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="bp">cls</span><span class="o">.</span><span class="n">_instance</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span> |
| <span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_instance</span></div></div> |
| |
| |
| <div class="viewcode-block" id="KubernetesJobWatcher"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobWatcher">[docs]</a><span class="k">class</span> <span class="nc">KubernetesJobWatcher</span><span class="p">(</span><span class="n">multiprocessing</span><span class="o">.</span><span class="n">Process</span><span class="p">,</span> <span class="n">LoggingMixin</span><span class="p">):</span> |
| <span class="sd">"""Watches for Kubernetes jobs"""</span> |
| |
| <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> |
| <span class="n">multi_namespace_mode</span><span class="p">:</span> <span class="nb">bool</span><span class="p">,</span> |
| <span class="n">watcher_queue</span><span class="p">:</span> <span class="s1">'Queue[KubernetesWatchType]'</span><span class="p">,</span> |
| <span class="n">resource_version</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> |
| <span class="n">scheduler_job_id</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> |
| <span class="n">kube_config</span><span class="p">:</span> <span class="n">Configuration</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">namespace</span> <span class="o">=</span> <span class="n">namespace</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">multi_namespace_mode</span> <span class="o">=</span> <span class="n">multi_namespace_mode</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span> <span class="o">=</span> <span class="n">scheduler_job_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span> <span class="o">=</span> <span class="n">watcher_queue</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">resource_version</span> <span class="o">=</span> <span class="n">resource_version</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span> <span class="o">=</span> <span class="n">kube_config</span> |
| |
| <div class="viewcode-block" id="KubernetesJobWatcher.run"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobWatcher.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Performs watching"""</span> |
| <span class="n">kube_client</span><span class="p">:</span> <span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span> <span class="o">=</span> <span class="n">get_kube_client</span><span class="p">()</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">while</span> <span class="kc">True</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">resource_version</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_run</span><span class="p">(</span> |
| <span class="n">kube_client</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">resource_version</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span> |
| <span class="p">)</span> |
| <span class="k">except</span> <span class="n">ReadTimeoutError</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">"There was a timeout error accessing the Kube API. Retrying request."</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</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">1</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">Exception</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="s1">'Unknown error in KubernetesJobWatcher. Failing'</span><span class="p">)</span> |
| <span class="k">raise</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">warning</span><span class="p">(</span> |
| <span class="s1">'Watch died gracefully, starting back up with: last resource_version: </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">resource_version</span><span class="p">,</span></div> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="KubernetesJobWatcher._run"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobWatcher._run">[docs]</a> <span class="k">def</span> <span class="nf">_run</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">kube_client</span><span class="p">:</span> <span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span><span class="p">,</span> |
| <span class="n">resource_version</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> |
| <span class="n">scheduler_job_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="n">kube_config</span><span class="p">:</span> <span class="n">Any</span><span class="p">,</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</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">'Event: and now my watch begins starting at resource_version: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">resource_version</span><span class="p">)</span> |
| <span class="n">watcher</span> <span class="o">=</span> <span class="n">watch</span><span class="o">.</span><span class="n">Watch</span><span class="p">()</span> |
| |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'label_selector'</span><span class="p">:</span> <span class="sa">f</span><span class="s1">'airflow-worker=</span><span class="si">{</span><span class="n">scheduler_job_id</span><span class="si">}</span><span class="s1">'</span><span class="p">}</span> |
| <span class="k">if</span> <span class="n">resource_version</span><span class="p">:</span> |
| <span class="n">kwargs</span><span class="p">[</span><span class="s1">'resource_version'</span><span class="p">]</span> <span class="o">=</span> <span class="n">resource_version</span> |
| <span class="k">if</span> <span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="n">kwargs</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">value</span> |
| |
| <span class="n">last_resource_version</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">multi_namespace_mode</span><span class="p">:</span> |
| <span class="n">list_worker_pods</span> <span class="o">=</span> <span class="n">functools</span><span class="o">.</span><span class="n">partial</span><span class="p">(</span> |
| <span class="n">watcher</span><span class="o">.</span><span class="n">stream</span><span class="p">,</span> <span class="n">kube_client</span><span class="o">.</span><span class="n">list_pod_for_all_namespaces</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span> |
| <span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">list_worker_pods</span> <span class="o">=</span> <span class="n">functools</span><span class="o">.</span><span class="n">partial</span><span class="p">(</span> |
| <span class="n">watcher</span><span class="o">.</span><span class="n">stream</span><span class="p">,</span> <span class="n">kube_client</span><span class="o">.</span><span class="n">list_namespaced_pod</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span> |
| <span class="p">)</span> |
| <span class="k">for</span> <span class="n">event</span> <span class="ow">in</span> <span class="n">list_worker_pods</span><span class="p">():</span> |
| <span class="n">task</span> <span class="o">=</span> <span class="n">event</span><span class="p">[</span><span class="s1">'object'</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">'Event: </span><span class="si">%s</span><span class="s1"> had an event of type </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">event</span><span class="p">[</span><span class="s1">'type'</span><span class="p">])</span> |
| <span class="k">if</span> <span class="n">event</span><span class="p">[</span><span class="s1">'type'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'ERROR'</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_error</span><span class="p">(</span><span class="n">event</span><span class="p">)</span> |
| <span class="n">annotations</span> <span class="o">=</span> <span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">annotations</span> |
| <span class="n">task_instance_related_annotations</span> <span class="o">=</span> <span class="p">{</span> |
| <span class="s1">'dag_id'</span><span class="p">:</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'dag_id'</span><span class="p">],</span> |
| <span class="s1">'task_id'</span><span class="p">:</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'task_id'</span><span class="p">],</span> |
| <span class="s1">'execution_date'</span><span class="p">:</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'execution_date'</span><span class="p">],</span> |
| <span class="s1">'try_number'</span><span class="p">:</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'try_number'</span><span class="p">],</span> |
| <span class="p">}</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">process_status</span><span class="p">(</span> |
| <span class="n">pod_id</span><span class="o">=</span><span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> |
| <span class="n">status</span><span class="o">=</span><span class="n">task</span><span class="o">.</span><span class="n">status</span><span class="o">.</span><span class="n">phase</span><span class="p">,</span> |
| <span class="n">annotations</span><span class="o">=</span><span class="n">task_instance_related_annotations</span><span class="p">,</span> |
| <span class="n">resource_version</span><span class="o">=</span><span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">resource_version</span><span class="p">,</span> |
| <span class="n">event</span><span class="o">=</span><span class="n">event</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="n">last_resource_version</span> <span class="o">=</span> <span class="n">task</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">resource_version</span> |
| |
| <span class="k">return</span> <span class="n">last_resource_version</span></div> |
| |
| <div class="viewcode-block" id="KubernetesJobWatcher.process_error"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobWatcher.process_error">[docs]</a> <span class="k">def</span> <span class="nf">process_error</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">:</span> <span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="sd">"""Process error response"""</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="s1">'Encountered Error response from k8s list namespaced pod stream => </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">event</span><span class="p">)</span> |
| <span class="n">raw_object</span> <span class="o">=</span> <span class="n">event</span><span class="p">[</span><span class="s1">'raw_object'</span><span class="p">]</span> |
| <span class="k">if</span> <span class="n">raw_object</span><span class="p">[</span><span class="s1">'code'</span><span class="p">]</span> <span class="o">==</span> <span class="mi">410</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">'Kubernetes resource version is too old, must reset to 0 => </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="p">(</span><span class="n">raw_object</span><span class="p">[</span><span class="s1">'message'</span><span class="p">],)</span> |
| <span class="p">)</span> |
| <span class="c1"># Return resource version 0</span> |
| <span class="k">return</span> <span class="s1">'0'</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="s1">'Kubernetes failure for </span><span class="si">%s</span><span class="s1"> with code </span><span class="si">%s</span><span class="s1"> and message: </span><span class="si">%s</span><span class="s1">'</span> |
| <span class="o">%</span> <span class="p">(</span><span class="n">raw_object</span><span class="p">[</span><span class="s1">'reason'</span><span class="p">],</span> <span class="n">raw_object</span><span class="p">[</span><span class="s1">'code'</span><span class="p">],</span> <span class="n">raw_object</span><span class="p">[</span><span class="s1">'message'</span><span class="p">])</span></div> |
| <span class="p">)</span> |
| |
| <div class="viewcode-block" id="KubernetesJobWatcher.process_status"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesJobWatcher.process_status">[docs]</a> <span class="k">def</span> <span class="nf">process_status</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">pod_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="n">status</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="n">annotations</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">],</span> |
| <span class="n">resource_version</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="n">event</span><span class="p">:</span> <span class="n">Any</span><span class="p">,</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Process status response"""</span> |
| <span class="k">if</span> <span class="n">status</span> <span class="o">==</span> <span class="s1">'Pending'</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">event</span><span class="p">[</span><span class="s1">'type'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'DELETED'</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">'Event: Failed to start pod </span><span class="si">%s</span><span class="s1">, will reschedule'</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">put</span><span class="p">(</span> |
| <span class="p">(</span><span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">State</span><span class="o">.</span><span class="n">UP_FOR_RESCHEDULE</span><span class="p">,</span> <span class="n">annotations</span><span class="p">,</span> <span class="n">resource_version</span><span class="p">)</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="s1">'Event: </span><span class="si">%s</span><span class="s1"> Pending'</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="n">status</span> <span class="o">==</span> <span class="s1">'Failed'</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="s1">'Event: </span><span class="si">%s</span><span class="s1"> Failed'</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">put</span><span class="p">((</span><span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</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="n">annotations</span><span class="p">,</span> <span class="n">resource_version</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="n">status</span> <span class="o">==</span> <span class="s1">'Succeeded'</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">'Event: </span><span class="si">%s</span><span class="s1"> Succeeded'</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">put</span><span class="p">((</span><span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">annotations</span><span class="p">,</span> <span class="n">resource_version</span><span class="p">))</span> |
| <span class="k">elif</span> <span class="n">status</span> <span class="o">==</span> <span class="s1">'Running'</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">'Event: </span><span class="si">%s</span><span class="s1"> is Running'</span><span class="p">,</span> <span class="n">pod_id</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">warning</span><span class="p">(</span> |
| <span class="s1">'Event: Invalid state: </span><span class="si">%s</span><span class="s1"> on pod: </span><span class="si">%s</span><span class="s1"> in namespace </span><span class="si">%s</span><span class="s1"> with annotations: </span><span class="si">%s</span><span class="s1"> with '</span> |
| <span class="s1">'resource_version: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> |
| <span class="n">status</span><span class="p">,</span> |
| <span class="n">pod_id</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="p">,</span> |
| <span class="n">annotations</span><span class="p">,</span> |
| <span class="n">resource_version</span><span class="p">,</span></div></div> |
| <span class="p">)</span> |
| |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler">[docs]</a><span class="k">class</span> <span class="nc">AirflowKubernetesScheduler</span><span class="p">(</span><span class="n">LoggingMixin</span><span class="p">):</span> |
| <span class="sd">"""Airflow Scheduler for Kubernetes"""</span> |
| |
| <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> |
| <span class="n">kube_config</span><span class="p">:</span> <span class="n">Any</span><span class="p">,</span> |
| <span class="n">task_queue</span><span class="p">:</span> <span class="s1">'Queue[KubernetesJobType]'</span><span class="p">,</span> |
| <span class="n">result_queue</span><span class="p">:</span> <span class="s1">'Queue[KubernetesResultsType]'</span><span class="p">,</span> |
| <span class="n">kube_client</span><span class="p">:</span> <span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span><span class="p">,</span> |
| <span class="n">scheduler_job_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> |
| <span class="p">):</span> |
| <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</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">"Creating Kubernetes executor"</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span> <span class="o">=</span> <span class="n">kube_config</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">namespace</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_namespace</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">"Kubernetes using namespace </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span> <span class="o">=</span> <span class="n">kube_client</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">launcher</span> <span class="o">=</span> <span class="n">PodLauncher</span><span class="p">(</span><span class="n">kube_client</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_manager</span> <span class="o">=</span> <span class="n">multiprocessing</span><span class="o">.</span><span class="n">Manager</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_manager</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">scheduler_job_id</span> <span class="o">=</span> <span class="n">scheduler_job_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_make_kube_watcher</span><span class="p">()</span> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler._make_kube_watcher"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler._make_kube_watcher">[docs]</a> <span class="k">def</span> <span class="nf">_make_kube_watcher</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">KubernetesJobWatcher</span><span class="p">:</span> |
| <span class="n">resource_version</span> <span class="o">=</span> <span class="n">ResourceVersion</span><span class="p">()</span><span class="o">.</span><span class="n">resource_version</span> |
| <span class="n">watcher</span> <span class="o">=</span> <span class="n">KubernetesJobWatcher</span><span class="p">(</span> |
| <span class="n">watcher_queue</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_namespace</span><span class="p">,</span> |
| <span class="n">multi_namespace_mode</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">multi_namespace_mode</span><span class="p">,</span> |
| <span class="n">resource_version</span><span class="o">=</span><span class="n">resource_version</span><span class="p">,</span> |
| <span class="n">scheduler_job_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">,</span> |
| <span class="n">kube_config</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="n">watcher</span><span class="o">.</span><span class="n">start</span><span class="p">()</span> |
| <span class="k">return</span> <span class="n">watcher</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler._health_check_kube_watcher"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler._health_check_kube_watcher">[docs]</a> <span class="k">def</span> <span class="nf">_health_check_kube_watcher</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</span><span class="o">.</span><span class="n">is_alive</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">"KubeJobWatcher alive, continuing"</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">error</span><span class="p">(</span> |
| <span class="s1">'Error while health checking kube watcher process. Process died for unknown reasons'</span> |
| <span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_make_kube_watcher</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler.run_next"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler.run_next">[docs]</a> <span class="k">def</span> <span class="nf">run_next</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">next_job</span><span class="p">:</span> <span class="n">KubernetesJobType</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> The run_next command will check the task_queue for any un-run jobs.</span> |
| <span class="sd"> It will then create a unique job-id, launch that job in the cluster,</span> |
| <span class="sd"> and store relevant info in the current_jobs map so we can track the job's</span> |
| <span class="sd"> status</span> |
| <span class="sd"> """</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">'Kubernetes job is </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">next_job</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">kube_executor_config</span><span class="p">,</span> <span class="n">pod_template_file</span> <span class="o">=</span> <span class="n">next_job</span> |
| <span class="n">dag_id</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">execution_date</span><span class="p">,</span> <span class="n">try_number</span> <span class="o">=</span> <span class="n">key</span> |
| |
| <span class="k">if</span> <span class="n">command</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="mi">3</span><span class="p">]</span> <span class="o">!=</span> <span class="p">[</span><span class="s2">"airflow"</span><span class="p">,</span> <span class="s2">"tasks"</span><span class="p">,</span> <span class="s2">"run"</span><span class="p">]:</span> |
| <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s1">'The command must start with ["airflow", "tasks", "run"].'</span><span class="p">)</span> |
| |
| <span class="n">base_worker_pod</span> <span class="o">=</span> <span class="n">get_base_pod_from_template</span><span class="p">(</span><span class="n">pod_template_file</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">base_worker_pod</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span> |
| <span class="sa">f</span><span class="s2">"could not find a valid worker template yaml at </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">pod_template_file</span><span class="si">}</span><span class="s2">"</span> |
| <span class="p">)</span> |
| |
| <span class="n">pod</span> <span class="o">=</span> <span class="n">PodGenerator</span><span class="o">.</span><span class="n">construct_pod</span><span class="p">(</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> |
| <span class="n">scheduler_job_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">,</span> |
| <span class="n">pod_id</span><span class="o">=</span><span class="n">create_pod_id</span><span class="p">(</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">task_id</span><span class="p">),</span> |
| <span class="n">dag_id</span><span class="o">=</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">kube_image</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_image</span><span class="p">,</span> |
| <span class="n">try_number</span><span class="o">=</span><span class="n">try_number</span><span class="p">,</span> |
| <span class="n">date</span><span class="o">=</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="n">args</span><span class="o">=</span><span class="n">command</span><span class="p">,</span> |
| <span class="n">pod_override_object</span><span class="o">=</span><span class="n">kube_executor_config</span><span class="p">,</span> |
| <span class="n">base_worker_pod</span><span class="o">=</span><span class="n">base_worker_pod</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="c1"># Reconcile the pod generated by the Operator and the Pod</span> |
| <span class="c1"># generated by the .cfg file</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">"Kubernetes running for command </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="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">"Kubernetes launching image </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod</span><span class="o">.</span><span class="n">spec</span><span class="o">.</span><span class="n">containers</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">image</span><span class="p">)</span> |
| |
| <span class="c1"># the watcher will monitor pods, so we do not block.</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">launcher</span><span class="o">.</span><span class="n">run_pod_async</span><span class="p">(</span><span class="n">pod</span><span class="p">,</span> <span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</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">"Kubernetes Job created!"</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler.delete_pod"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler.delete_pod">[docs]</a> <span class="k">def</span> <span class="nf">delete_pod</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">namespace</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Deletes POD"""</span> |
| <span class="k">try</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">"Deleting pod </span><span class="si">%s</span><span class="s2"> in namespace </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="o">.</span><span class="n">delete_namespaced_pod</span><span class="p">(</span> |
| <span class="n">pod_id</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="p">,</span> |
| <span class="n">body</span><span class="o">=</span><span class="n">client</span><span class="o">.</span><span class="n">V1DeleteOptions</span><span class="p">(</span><span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">delete_option_kwargs</span><span class="p">),</span> |
| <span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">except</span> <span class="n">ApiException</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> |
| <span class="c1"># If the pod is already deleted</span> |
| <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">status</span> <span class="o">!=</span> <span class="mi">404</span><span class="p">:</span> |
| <span class="k">raise</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler.sync"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler.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="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> The sync function checks the status of all currently running kubernetes jobs.</span> |
| <span class="sd"> If a job is completed, its status is placed in the result queue to</span> |
| <span class="sd"> be sent back to the scheduler.</span> |
| |
| <span class="sd"> :return:</span> |
| |
| <span class="sd"> """</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">"Syncing KubernetesExecutor"</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_health_check_kube_watcher</span><span class="p">()</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> |
| <span class="k">try</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">watcher_queue</span><span class="o">.</span><span class="n">get_nowait</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">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Processing task </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">task</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">process_watcher_task</span><span class="p">(</span><span class="n">task</span><span class="p">)</span> |
| <span class="k">finally</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">task_done</span><span class="p">()</span> |
| <span class="k">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler.process_watcher_task"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler.process_watcher_task">[docs]</a> <span class="k">def</span> <span class="nf">process_watcher_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">task</span><span class="p">:</span> <span class="n">KubernetesWatchType</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Process the task by watcher."""</span> |
| <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">annotations</span><span class="p">,</span> <span class="n">resource_version</span> <span class="o">=</span> <span class="n">task</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">'Attempting to finish pod; pod_id: </span><span class="si">%s</span><span class="s1">; state: </span><span class="si">%s</span><span class="s1">; annotations: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">annotations</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">_annotations_to_key</span><span class="p">(</span><span class="n">annotations</span><span class="o">=</span><span class="n">annotations</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">key</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="s1">'finishing job </span><span class="si">%s</span><span class="s1"> - </span><span class="si">%s</span><span class="s1"> (</span><span class="si">%s</span><span class="s1">)'</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">pod_id</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="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">resource_version</span><span class="p">))</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler._annotations_to_key"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler._annotations_to_key">[docs]</a> <span class="k">def</span> <span class="nf">_annotations_to_key</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">annotations</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">])</span> <span class="o">-></span> <span class="n">Optional</span><span class="p">[</span><span class="n">TaskInstanceKey</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">"Creating task key for annotations </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">annotations</span><span class="p">)</span> |
| <span class="n">dag_id</span> <span class="o">=</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'dag_id'</span><span class="p">]</span> |
| <span class="n">task_id</span> <span class="o">=</span> <span class="n">annotations</span><span class="p">[</span><span class="s1">'task_id'</span><span class="p">]</span> |
| <span class="n">try_number</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">annotations</span><span class="p">[</span><span class="s1">'try_number'</span><span class="p">])</span> |
| <span class="n">execution_date</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">annotations</span><span class="p">[</span><span class="s1">'execution_date'</span><span class="p">])</span> |
| |
| <span class="k">return</span> <span class="n">TaskInstanceKey</span><span class="p">(</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">execution_date</span><span class="p">,</span> <span class="n">try_number</span><span class="p">)</span></div> |
| |
| <span class="nd">@staticmethod</span> |
| <div class="viewcode-block" id="AirflowKubernetesScheduler._make_safe_pod_id"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler._make_safe_pod_id">[docs]</a> <span class="k">def</span> <span class="nf">_make_safe_pod_id</span><span class="p">(</span><span class="n">safe_dag_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">safe_task_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">safe_uuid</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span> |
| <span class="sa">r</span><span class="sd">"""</span> |
| <span class="sd"> Kubernetes pod names must be <= 253 chars and must pass the following regex for</span> |
| <span class="sd"> validation</span> |
| <span class="sd"> ``^[a-z0-9]([-a-z0-9]*[a-z0-9])?(\\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$``</span> |
| |
| <span class="sd"> :param safe_dag_id: a dag_id with only alphanumeric characters</span> |
| <span class="sd"> :param safe_task_id: a task_id with only alphanumeric characters</span> |
| <span class="sd"> :param safe_uuid: a uuid</span> |
| <span class="sd"> :return: ``str`` valid Pod name of appropriate length</span> |
| <span class="sd"> """</span> |
| <span class="n">safe_key</span> <span class="o">=</span> <span class="n">safe_dag_id</span> <span class="o">+</span> <span class="n">safe_task_id</span> |
| |
| <span class="n">safe_pod_id</span> <span class="o">=</span> <span class="n">safe_key</span><span class="p">[:</span> <span class="n">MAX_POD_ID_LEN</span> <span class="o">-</span> <span class="nb">len</span><span class="p">(</span><span class="n">safe_uuid</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> <span class="o">+</span> <span class="s2">"-"</span> <span class="o">+</span> <span class="n">safe_uuid</span> |
| |
| <span class="k">return</span> <span class="n">safe_pod_id</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler._flush_watcher_queue"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler._flush_watcher_queue">[docs]</a> <span class="k">def</span> <span class="nf">_flush_watcher_queue</span><span class="p">(</span><span class="bp">self</span><span class="p">)</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">debug</span><span class="p">(</span><span class="s1">'Executor shutting down, watcher_queue approx. size=</span><span class="si">%d</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">qsize</span><span class="p">())</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> |
| <span class="k">try</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">watcher_queue</span><span class="o">.</span><span class="n">get_nowait</span><span class="p">()</span> |
| <span class="c1"># Ignoring it since it can only have either FAILED or SUCCEEDED pods</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="s1">'Executor shutting down, IGNORING watcher task=</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">task</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_queue</span><span class="o">.</span><span class="n">task_done</span><span class="p">()</span> |
| <span class="k">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span></div> |
| |
| <div class="viewcode-block" id="AirflowKubernetesScheduler.terminate"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.AirflowKubernetesScheduler.terminate">[docs]</a> <span class="k">def</span> <span class="nf">terminate</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Terminates the watcher."""</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">"Terminating kube_watcher..."</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</span><span class="o">.</span><span class="n">terminate</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</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">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"kube_watcher=</span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_watcher</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">"Flushing watcher_queue..."</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_flush_watcher_queue</span><span class="p">()</span> |
| <span class="c1"># Queue should be empty...</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">watcher_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">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"Shutting down manager..."</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_manager</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span></div></div> |
| |
| |
| <div class="viewcode-block" id="get_base_pod_from_template"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.get_base_pod_from_template">[docs]</a><span class="k">def</span> <span class="nf">get_base_pod_from_template</span><span class="p">(</span><span class="n">pod_template_file</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> <span class="n">kube_config</span><span class="p">:</span> <span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="n">k8s</span><span class="o">.</span><span class="n">V1Pod</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Reads either the pod_template_file set in the executor_config or the base pod_template_file</span> |
| <span class="sd"> set in the airflow.cfg to craft a "base pod" that will be used by the KubernetesExecutor</span> |
| |
| <span class="sd"> :param pod_template_file: absolute path to a pod_template_file.yaml or None</span> |
| <span class="sd"> :param kube_config: The KubeConfig class generated by airflow that contains all kube metadata</span> |
| <span class="sd"> :return: a V1Pod that can be used as the base pod for k8s tasks</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="n">pod_template_file</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">PodGenerator</span><span class="o">.</span><span class="n">deserialize_model_file</span><span class="p">(</span><span class="n">pod_template_file</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">PodGenerator</span><span class="o">.</span><span class="n">deserialize_model_file</span><span class="p">(</span><span class="n">kube_config</span><span class="o">.</span><span class="n">pod_template_file</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="KubernetesExecutor"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor">[docs]</a><span class="k">class</span> <span class="nc">KubernetesExecutor</span><span class="p">(</span><span class="n">BaseExecutor</span><span class="p">,</span> <span class="n">LoggingMixin</span><span class="p">):</span> |
| <span class="sd">"""Executor for Kubernetes"""</span> |
| |
| <span class="k">def</span> <span class="fm">__init__</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">kube_config</span> <span class="o">=</span> <span class="n">KubeConfig</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_manager</span> <span class="o">=</span> <span class="n">multiprocessing</span><span class="o">.</span><span class="n">Manager</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="s1">'Queue[KubernetesJobType]'</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_manager</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="p">:</span> <span class="s1">'Queue[KubernetesResultsType]'</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_manager</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">kube_scheduler</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">AirflowKubernetesScheduler</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">parallelism</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">parallelism</span><span class="p">)</span> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="KubernetesExecutor.clear_not_launched_queued_tasks"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.clear_not_launched_queued_tasks">[docs]</a> <span class="k">def</span> <span class="nf">clear_not_launched_queued_tasks</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">session</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> If the airflow scheduler restarts with pending "Queued" tasks, the tasks may or</span> |
| <span class="sd"> may not</span> |
| <span class="sd"> have been launched. Thus on starting up the scheduler let's check every</span> |
| <span class="sd"> "Queued" task to</span> |
| <span class="sd"> see if it has been launched (ie: if there is a corresponding pod on kubernetes)</span> |
| |
| <span class="sd"> If it has been launched then do nothing, otherwise reset the state to "None" so</span> |
| <span class="sd"> the task</span> |
| <span class="sd"> will be rescheduled</span> |
| |
| <span class="sd"> This will not be necessary in a future version of airflow in which there is</span> |
| <span class="sd"> proper support</span> |
| <span class="sd"> for State.LAUNCHED</span> |
| <span class="sd"> """</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">"Clearing tasks that have not been launched"</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="n">queued_tasks</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">TaskInstance</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">State</span><span class="o">.</span><span class="n">QUEUED</span><span class="p">)</span><span class="o">.</span><span class="n">all</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">'When executor started up, found </span><span class="si">%s</span><span class="s1"> queued task instances'</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">queued_tasks</span><span class="p">))</span> |
| |
| <span class="k">for</span> <span class="n">task</span> <span class="ow">in</span> <span class="n">queued_tasks</span><span class="p">:</span> |
| <span class="c1"># pylint: disable=protected-access</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">"Checking task </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">task</span><span class="p">)</span> |
| <span class="n">dict_string</span> <span class="o">=</span> <span class="s2">"dag_id=</span><span class="si">{}</span><span class="s2">,task_id=</span><span class="si">{}</span><span class="s2">,execution_date=</span><span class="si">{}</span><span class="s2">,airflow-worker=</span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span> |
| <span class="n">pod_generator</span><span class="o">.</span><span class="n">make_safe_label_value</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">dag_id</span><span class="p">),</span> |
| <span class="n">pod_generator</span><span class="o">.</span><span class="n">make_safe_label_value</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="p">),</span> |
| <span class="n">pod_generator</span><span class="o">.</span><span class="n">datetime_to_label_safe_datestring</span><span class="p">(</span><span class="n">task</span><span class="o">.</span><span class="n">execution_date</span><span class="p">),</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="c1"># pylint: enable=protected-access</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span><span class="n">label_selector</span><span class="o">=</span><span class="n">dict_string</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</span><span class="p">:</span> |
| <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_client_request_args</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="n">kwargs</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">value</span> |
| <span class="n">pod_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="o">.</span><span class="n">list_namespaced_pod</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_namespace</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">pod_list</span><span class="o">.</span><span class="n">items</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">'TaskInstance: </span><span class="si">%s</span><span class="s1"> found in queued state but was not launched, rescheduling'</span><span class="p">,</span> <span class="n">task</span> |
| <span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">query</span><span class="p">(</span><span class="n">TaskInstance</span><span class="p">)</span><span class="o">.</span><span class="n">filter</span><span class="p">(</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">task</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">task</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">TaskInstance</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">task</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="p">)</span><span class="o">.</span><span class="n">update</span><span class="p">({</span><span class="n">TaskInstance</span><span class="o">.</span><span class="n">state</span><span class="p">:</span> <span class="n">State</span><span class="o">.</span><span class="n">NONE</span><span class="p">})</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.start"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.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="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Starts the executor"""</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">'Start Kubernetes executor'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">job_id</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Could not get scheduler_job_id"</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">job_id</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="s1">'Start with scheduler_job_id: </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">scheduler_job_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span> <span class="o">=</span> <span class="n">get_kube_client</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span> <span class="o">=</span> <span class="n">AirflowKubernetesScheduler</span><span class="p">(</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</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="bp">self</span><span class="o">.</span><span class="n">kube_client</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span> |
| <span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">clear_not_launched_queued_tasks</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.execute_async"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.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">TaskInstanceKey</span><span class="p">,</span> |
| <span class="n">command</span><span class="p">:</span> <span class="n">CommandType</span><span class="p">,</span> |
| <span class="n">queue</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> |
| <span class="n">executor_config</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Any</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Executes task asynchronously"""</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">'Add task </span><span class="si">%s</span><span class="s1"> with command </span><span class="si">%s</span><span class="s1"> with executor_config </span><span class="si">%s</span><span class="s1">'</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">executor_config</span><span class="p">)</span> |
| <span class="n">kube_executor_config</span> <span class="o">=</span> <span class="n">PodGenerator</span><span class="o">.</span><span class="n">from_obj</span><span class="p">(</span><span class="n">executor_config</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">executor_config</span><span class="p">:</span> |
| <span class="n">pod_template_file</span> <span class="o">=</span> <span class="n">executor_config</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pod_template_override"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">pod_template_file</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">event_buffer</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">State</span><span class="o">.</span><span class="n">QUEUED</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</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> <span class="n">kube_executor_config</span><span class="p">,</span> <span class="n">pod_template_file</span><span class="p">))</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.sync"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.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="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Synchronize task state."""</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">running</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="s1">'self.running: </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">running</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">queued_tasks</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="s1">'self.queued: </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">queued_tasks</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="o">.</span><span class="n">sync</span><span class="p">()</span> |
| |
| <span class="n">last_resource_version</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> <span class="c1"># pylint: disable=too-many-nested-blocks</span> |
| <span class="k">try</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_nowait</span><span class="p">()</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">key</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">resource_version</span> <span class="o">=</span> <span class="n">results</span> |
| <span class="n">last_resource_version</span> <span class="o">=</span> <span class="n">resource_version</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">'Changing state of </span><span class="si">%s</span><span class="s1"> to </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">results</span><span class="p">,</span> <span class="n">state</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">_change_state</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">)</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="c1"># pylint: disable=broad-except</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="s2">"Exception: </span><span class="si">%s</span><span class="s2"> when attempting to change state of </span><span class="si">%s</span><span class="s2"> to </span><span class="si">%s</span><span class="s2">, re-queueing."</span><span class="p">,</span> |
| <span class="n">e</span><span class="p">,</span> |
| <span class="n">results</span><span class="p">,</span> |
| <span class="n">state</span><span class="p">,</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">results</span><span class="p">)</span> |
| <span class="k">finally</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">task_done</span><span class="p">()</span> |
| <span class="k">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span> |
| |
| <span class="n">resource_instance</span> <span class="o">=</span> <span class="n">ResourceVersion</span><span class="p">()</span> |
| <span class="n">resource_instance</span><span class="o">.</span><span class="n">resource_version</span> <span class="o">=</span> <span class="n">last_resource_version</span> <span class="ow">or</span> <span class="n">resource_instance</span><span class="o">.</span><span class="n">resource_version</span> |
| |
| <span class="c1"># pylint: disable=too-many-nested-blocks</span> |
| <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">worker_pods_creation_batch_size</span><span class="p">):</span> |
| <span class="k">try</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">task_queue</span><span class="o">.</span><span class="n">get_nowait</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">kube_scheduler</span><span class="o">.</span><span class="n">run_next</span><span class="p">(</span><span class="n">task</span><span class="p">)</span> |
| <span class="k">except</span> <span class="n">ApiException</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">reason</span> <span class="o">==</span> <span class="s2">"BadRequest"</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">"Request was invalid. Failing task"</span><span class="p">)</span> |
| <span class="n">key</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">task</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">change_state</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="n">e</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">warning</span><span class="p">(</span> |
| <span class="s1">'ApiException when attempting to run task, re-queueing. Message: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> |
| <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">body</span><span class="p">)[</span><span class="s1">'message'</span><span class="p">],</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">task</span><span class="p">)</span> |
| <span class="k">finally</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">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span></div> |
| <span class="c1"># pylint: enable=too-many-nested-blocks</span> |
| |
| <div class="viewcode-block" id="KubernetesExecutor._change_state"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor._change_state">[docs]</a> <span class="k">def</span> <span class="nf">_change_state</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">TaskInstanceKey</span><span class="p">,</span> <span class="n">state</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">],</span> <span class="n">pod_id</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">namespace</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="o">!=</span> <span class="n">State</span><span class="o">.</span><span class="n">RUNNING</span><span class="p">:</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">delete_worker_pods</span><span class="p">:</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">State</span><span class="o">.</span><span class="n">FAILED</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">delete_worker_pods_on_failure</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="o">.</span><span class="n">delete_pod</span><span class="p">(</span><span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</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">'Deleted pod: </span><span class="si">%s</span><span class="s1"> in namespace </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">),</span> <span class="nb">str</span><span class="p">(</span><span class="n">namespace</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">running</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> |
| <span class="k">except</span> <span class="ne">KeyError</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="s1">'Could not find key: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">))</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">event_buffer</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="kc">None</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.try_adopt_task_instances"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.try_adopt_task_instances">[docs]</a> <span class="k">def</span> <span class="nf">try_adopt_task_instances</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">tis</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">TaskInstance</span><span class="p">])</span> <span class="o">-></span> <span class="n">List</span><span class="p">[</span><span class="n">TaskInstance</span><span class="p">]:</span> |
| <span class="n">tis_to_flush</span> <span class="o">=</span> <span class="p">[</span><span class="n">ti</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">ti</span><span class="o">.</span><span class="n">external_executor_id</span><span class="p">]</span> |
| <span class="n">scheduler_job_ids</span> <span class="o">=</span> <span class="p">[</span><span class="n">ti</span><span class="o">.</span><span class="n">external_executor_id</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span><span class="p">]</span> |
| <span class="n">pod_ids</span> <span class="o">=</span> <span class="p">{</span> |
| <span class="n">create_pod_id</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="n">ti</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">task_id</span><span class="o">=</span><span class="n">ti</span><span class="o">.</span><span class="n">task_id</span><span class="p">):</span> <span class="n">ti</span> <span class="k">for</span> <span class="n">ti</span> <span class="ow">in</span> <span class="n">tis</span> <span class="k">if</span> <span class="n">ti</span><span class="o">.</span><span class="n">external_executor_id</span> |
| <span class="p">}</span> |
| <span class="n">kube_client</span><span class="p">:</span> <span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_client</span> |
| <span class="k">for</span> <span class="n">scheduler_job_id</span> <span class="ow">in</span> <span class="n">scheduler_job_ids</span><span class="p">:</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'label_selector'</span><span class="p">:</span> <span class="sa">f</span><span class="s1">'airflow-worker=</span><span class="si">{</span><span class="n">scheduler_job_id</span><span class="si">}</span><span class="s1">'</span><span class="p">}</span> |
| <span class="n">pod_list</span> <span class="o">=</span> <span class="n">kube_client</span><span class="o">.</span><span class="n">list_namespaced_pod</span><span class="p">(</span><span class="n">namespace</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_namespace</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">pod</span> <span class="ow">in</span> <span class="n">pod_list</span><span class="o">.</span><span class="n">items</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">adopt_launched_task</span><span class="p">(</span><span class="n">kube_client</span><span class="p">,</span> <span class="n">pod</span><span class="p">,</span> <span class="n">pod_ids</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_adopt_completed_pods</span><span class="p">(</span><span class="n">kube_client</span><span class="p">)</span> |
| <span class="n">tis_to_flush</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">pod_ids</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> |
| <span class="k">return</span> <span class="n">tis_to_flush</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.adopt_launched_task"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.adopt_launched_task">[docs]</a> <span class="k">def</span> <span class="nf">adopt_launched_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">kube_client</span><span class="p">,</span> <span class="n">pod</span><span class="p">,</span> <span class="n">pod_ids</span><span class="p">:</span> <span class="nb">dict</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Patch existing pod so that the current KubernetesJobWatcher can monitor it via label selectors</span> |
| |
| <span class="sd"> :param kube_client: kubernetes client for speaking to kube API</span> |
| <span class="sd"> :param pod: V1Pod spec that we will patch with new label</span> |
| <span class="sd"> :param pod_ids: pod_ids we expect to patch.</span> |
| <span class="sd"> """</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">"attempting to adopt pod </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> |
| <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">labels</span><span class="p">[</span><span class="s1">'airflow-worker'</span><span class="p">]</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">)</span> |
| <span class="n">dag_id</span> <span class="o">=</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">labels</span><span class="p">[</span><span class="s1">'dag_id'</span><span class="p">]</span> |
| <span class="n">task_id</span> <span class="o">=</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">labels</span><span class="p">[</span><span class="s1">'task_id'</span><span class="p">]</span> |
| <span class="n">pod_id</span> <span class="o">=</span> <span class="n">create_pod_id</span><span class="p">(</span><span class="n">dag_id</span><span class="o">=</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">task_id</span><span class="o">=</span><span class="n">task_id</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">pod_id</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pod_ids</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">"attempting to adopt task </span><span class="si">%s</span><span class="s2"> in dag </span><span class="si">%s</span><span class="s2"> which was not specified by database"</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="p">,</span> |
| <span class="n">dag_id</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">kube_client</span><span class="o">.</span><span class="n">patch_namespaced_pod</span><span class="p">(</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> |
| <span class="n">body</span><span class="o">=</span><span class="n">PodGenerator</span><span class="o">.</span><span class="n">serialize_pod</span><span class="p">(</span><span class="n">pod</span><span class="p">),</span> |
| <span class="p">)</span> |
| <span class="n">pod_ids</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">pod_id</span><span class="p">)</span> |
| <span class="k">except</span> <span class="n">ApiException</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">info</span><span class="p">(</span><span class="s2">"Failed to adopt pod </span><span class="si">%s</span><span class="s2">. Reason: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor._adopt_completed_pods"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor._adopt_completed_pods">[docs]</a> <span class="k">def</span> <span class="nf">_adopt_completed_pods</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">kube_client</span><span class="p">:</span> <span class="n">kubernetes</span><span class="o">.</span><span class="n">client</span><span class="o">.</span><span class="n">CoreV1Api</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| |
| <span class="sd"> Patch completed pod so that the KubernetesJobWatcher can delete it.</span> |
| |
| <span class="sd"> :param kube_client: kubernetes client for speaking to kube API</span> |
| <span class="sd"> """</span> |
| <span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span> |
| <span class="s1">'field_selector'</span><span class="p">:</span> <span class="s2">"status.phase=Succeeded"</span><span class="p">,</span> |
| <span class="s1">'label_selector'</span><span class="p">:</span> <span class="s1">'kubernetes_executor=True'</span><span class="p">,</span> |
| <span class="p">}</span> |
| <span class="n">pod_list</span> <span class="o">=</span> <span class="n">kube_client</span><span class="o">.</span><span class="n">list_namespaced_pod</span><span class="p">(</span><span class="n">namespace</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">kube_config</span><span class="o">.</span><span class="n">kube_namespace</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="k">for</span> <span class="n">pod</span> <span class="ow">in</span> <span class="n">pod_list</span><span class="o">.</span><span class="n">items</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">"Attempting to adopt pod </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> |
| <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">labels</span><span class="p">[</span><span class="s1">'airflow-worker'</span><span class="p">]</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scheduler_job_id</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">kube_client</span><span class="o">.</span><span class="n">patch_namespaced_pod</span><span class="p">(</span> |
| <span class="n">name</span><span class="o">=</span><span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> |
| <span class="n">namespace</span><span class="o">=</span><span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">namespace</span><span class="p">,</span> |
| <span class="n">body</span><span class="o">=</span><span class="n">PodGenerator</span><span class="o">.</span><span class="n">serialize_pod</span><span class="p">(</span><span class="n">pod</span><span class="p">),</span> |
| <span class="p">)</span> |
| <span class="k">except</span> <span class="n">ApiException</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">info</span><span class="p">(</span><span class="s2">"Failed to adopt pod </span><span class="si">%s</span><span class="s2">. Reason: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">pod</span><span class="o">.</span><span class="n">metadata</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor._flush_task_queue"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor._flush_task_queue">[docs]</a> <span class="k">def</span> <span class="nf">_flush_task_queue</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_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">debug</span><span class="p">(</span><span class="s1">'Executor shutting down, task_queue approximate size=</span><span class="si">%d</span><span class="s1">'</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">qsize</span><span class="p">())</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> |
| <span class="k">try</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">task_queue</span><span class="o">.</span><span class="n">get_nowait</span><span class="p">()</span> |
| <span class="c1"># This is a new task to run thus ok to ignore.</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="s1">'Executor shutting down, will NOT run task=</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">task</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">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor._flush_result_queue"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor._flush_result_queue">[docs]</a> <span class="k">def</span> <span class="nf">_flush_result_queue</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_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">debug</span><span class="p">(</span><span class="s1">'Executor shutting down, result_queue approximate size=</span><span class="si">%d</span><span class="s1">'</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">qsize</span><span class="p">())</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> <span class="c1"># pylint: disable=too-many-nested-blocks</span> |
| <span class="k">try</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_nowait</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="s1">'Executor shutting down, flushing results=</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">results</span><span class="p">)</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">key</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">,</span> <span class="n">resource_version</span> <span class="o">=</span> <span class="n">results</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">'Changing state of </span><span class="si">%s</span><span class="s1"> to </span><span class="si">%s</span><span class="s1"> : resource_version=</span><span class="si">%d</span><span class="s1">'</span><span class="p">,</span> <span class="n">results</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">resource_version</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">_change_state</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">state</span><span class="p">,</span> <span class="n">pod_id</span><span class="p">,</span> <span class="n">namespace</span><span class="p">)</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="c1"># pylint: disable=broad-except</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="s1">'Ignoring exception: </span><span class="si">%s</span><span class="s1"> when attempting to change state of </span><span class="si">%s</span><span class="s1"> to </span><span class="si">%s</span><span class="s1">.'</span><span class="p">,</span> |
| <span class="n">e</span><span class="p">,</span> |
| <span class="n">results</span><span class="p">,</span> |
| <span class="n">state</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="k">finally</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">task_done</span><span class="p">()</span> |
| <span class="k">except</span> <span class="n">Empty</span><span class="p">:</span> |
| <span class="k">break</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.end"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.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="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="sd">"""Called when the executor shuts down"""</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">result_queue</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_MESSAGE</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="n">NOT_STARTED_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="s1">'Shutting down Kubernetes executor'</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="s1">'Flushing task_queue...'</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_flush_task_queue</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="s1">'Flushing result_queue...'</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_flush_result_queue</span><span class="p">()</span> |
| <span class="c1"># Both queues should be empty...</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">result_queue</span><span class="o">.</span><span class="n">join</span><span class="p">()</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">kube_scheduler</span><span class="o">.</span><span class="n">terminate</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_manager</span><span class="o">.</span><span class="n">shutdown</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="KubernetesExecutor.terminate"><a class="viewcode-back" href="../../../_api/airflow/executors/kubernetes_executor/index.html#airflow.executors.kubernetes_executor.KubernetesExecutor.terminate">[docs]</a> <span class="k">def</span> <span class="nf">terminate</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></div></div> |
| <span class="sd">"""Terminate the executor is not doing anything."""</span> |
| </pre></div> |
| |
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