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| <h1>Source code for airflow.sensors.smart_sensor</h1><div class="highlight"><pre> |
| <span></span><span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="c1"># or more contributor license agreements. See the NOTICE file</span> |
| <span class="c1"># distributed with this work for additional information</span> |
| <span class="c1"># regarding copyright ownership. The ASF licenses this file</span> |
| <span class="c1"># to you under the Apache License, Version 2.0 (the</span> |
| <span class="c1"># "License"); you may not use this file except in compliance</span> |
| <span class="c1"># with the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing,</span> |
| <span class="c1"># software distributed under the License is distributed on an</span> |
| <span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span> |
| <span class="c1"># KIND, either express or implied. See the License for the</span> |
| <span class="c1"># specific language governing permissions and limitations</span> |
| <span class="c1"># under the License.</span> |
| |
| |
| <span class="kn">import</span> <span class="nn">datetime</span> |
| <span class="kn">import</span> <span class="nn">json</span> |
| <span class="kn">import</span> <span class="nn">logging</span> |
| <span class="kn">import</span> <span class="nn">traceback</span> |
| <span class="kn">from</span> <span class="nn">logging.config</span> <span class="kn">import</span> <span class="n">DictConfigurator</span> <span class="c1"># type: ignore</span> |
| <span class="kn">from</span> <span class="nn">time</span> <span class="kn">import</span> <span class="n">sleep</span> |
| |
| <span class="kn">from</span> <span class="nn">sqlalchemy</span> <span class="kn">import</span> <span class="n">and_</span><span class="p">,</span> <span class="n">or_</span><span class="p">,</span> <span class="n">tuple_</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span><span class="p">,</span> <span class="n">AirflowTaskTimeout</span> |
| <span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span><span class="p">,</span> <span class="n">SensorInstance</span><span class="p">,</span> <span class="n">SkipMixin</span><span class="p">,</span> <span class="n">TaskInstance</span> |
| <span class="kn">from</span> <span class="nn">airflow.settings</span> <span class="kn">import</span> <span class="n">LOGGING_CLASS_PATH</span> |
| <span class="kn">from</span> <span class="nn">airflow.stats</span> <span class="kn">import</span> <span class="n">Stats</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="kn">import</span> <span class="n">helpers</span><span class="p">,</span> <span class="n">timezone</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.email</span> <span class="kn">import</span> <span class="n">send_email</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.log.logging_mixin</span> <span class="kn">import</span> <span class="n">set_context</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.module_loading</span> <span class="kn">import</span> <span class="n">import_string</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.net</span> <span class="kn">import</span> <span class="n">get_hostname</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">PokeState</span><span class="p">,</span> <span class="n">State</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.timeout</span> <span class="kn">import</span> <span class="n">timeout</span> |
| |
| <div class="viewcode-block" id="config"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.config">[docs]</a><span class="n">config</span> <span class="o">=</span> <span class="n">import_string</span><span class="p">(</span><span class="n">LOGGING_CLASS_PATH</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="handler_config"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.handler_config">[docs]</a><span class="n">handler_config</span> <span class="o">=</span> <span class="n">config</span><span class="p">[</span><span class="s1">'handlers'</span><span class="p">][</span><span class="s1">'task'</span><span class="p">]</span></div> |
| <span class="k">try</span><span class="p">:</span> |
| <div class="viewcode-block" id="formatter_config"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.formatter_config">[docs]</a> <span class="n">formatter_config</span> <span class="o">=</span> <span class="n">config</span><span class="p">[</span><span class="s1">'formatters'</span><span class="p">][</span><span class="n">handler_config</span><span class="p">[</span><span class="s1">'formatter'</span><span class="p">]]</span></div> |
| <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">err</span><span class="p">:</span> <span class="c1"># pylint: disable=broad-except</span> |
| <span class="n">formatter_config</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="nb">print</span><span class="p">(</span><span class="n">err</span><span class="p">)</span> |
| <div class="viewcode-block" id="dictConfigurator"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.dictConfigurator">[docs]</a><span class="n">dictConfigurator</span> <span class="o">=</span> <span class="n">DictConfigurator</span><span class="p">(</span><span class="n">config</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="SensorWork"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork">[docs]</a><span class="k">class</span> <span class="nc">SensorWork</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> This class stores a sensor work with decoded context value. It is only used</span> |
| <span class="sd"> inside of smart sensor. Create a sensor work based on sensor instance record.</span> |
| <span class="sd"> A sensor work object has the following attributes:</span> |
| <span class="sd"> `dag_id`: sensor_instance dag_id.</span> |
| <span class="sd"> `task_id`: sensor_instance task_id.</span> |
| <span class="sd"> `execution_date`: sensor_instance execution_date.</span> |
| <span class="sd"> `try_number`: sensor_instance try_number</span> |
| <span class="sd"> `poke_context`: Decoded poke_context for the sensor task.</span> |
| <span class="sd"> `execution_context`: Decoded execution_context.</span> |
| <span class="sd"> `hashcode`: This is the signature of poking job.</span> |
| <span class="sd"> `operator`: The sensor operator class.</span> |
| <span class="sd"> `op_classpath`: The sensor operator class path</span> |
| <span class="sd"> `encoded_poke_context`: The raw data from sensor_instance poke_context column.</span> |
| <span class="sd"> `log`: The sensor work logger which will mock the corresponding task instance log.</span> |
| |
| <span class="sd"> :param si: The sensor_instance ORM object.</span> |
| <span class="sd"> """</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">si</span><span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">dag_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">task_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">execution_date</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">try_number</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">try_number</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">poke_context</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">si</span><span class="o">.</span><span class="n">poke_context</span><span class="p">)</span> <span class="k">if</span> <span class="n">si</span><span class="o">.</span><span class="n">poke_context</span> <span class="k">else</span> <span class="p">{}</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">execution_context</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">si</span><span class="o">.</span><span class="n">execution_context</span><span class="p">)</span> <span class="k">if</span> <span class="n">si</span><span class="o">.</span><span class="n">execution_context</span> <span class="k">else</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="bp">self</span><span class="o">.</span><span class="n">_get_sensor_logger</span><span class="p">(</span><span class="n">si</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="kc">None</span> |
| <span class="nb">print</span><span class="p">(</span><span class="n">e</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">hashcode</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">hashcode</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">start_date</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">start_date</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">operator</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">operator</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">op_classpath</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">op_classpath</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">encoded_poke_context</span> <span class="o">=</span> <span class="n">si</span><span class="o">.</span><span class="n">poke_context</span> |
| |
| <div class="viewcode-block" id="SensorWork.__eq__"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork.__eq__">[docs]</a> <span class="k">def</span> <span class="fm">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">SensorWork</span><span class="p">):</span> |
| <span class="k">return</span> <span class="bp">NotImplemented</span> |
| |
| <span class="k">return</span> <span class="p">(</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">dag_id</span> |
| <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">task_id</span> |
| <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">execution_date</span> |
| <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">try_number</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">try_number</span></div> |
| <span class="p">)</span> |
| |
| <span class="nd">@staticmethod</span> |
| <div class="viewcode-block" id="SensorWork.create_new_task_handler"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork.create_new_task_handler">[docs]</a> <span class="k">def</span> <span class="nf">create_new_task_handler</span><span class="p">():</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Create task log handler for a sensor work.</span> |
| <span class="sd"> :return: log handler</span> |
| <span class="sd"> """</span> |
| <span class="n">handler_config_copy</span> <span class="o">=</span> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="n">handler_config</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">handler_config</span><span class="p">}</span> |
| <span class="n">formatter_config_copy</span> <span class="o">=</span> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="n">formatter_config</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">formatter_config</span><span class="p">}</span> |
| <span class="n">handler</span> <span class="o">=</span> <span class="n">dictConfigurator</span><span class="o">.</span><span class="n">configure_handler</span><span class="p">(</span><span class="n">handler_config_copy</span><span class="p">)</span> |
| <span class="n">formatter</span> <span class="o">=</span> <span class="n">dictConfigurator</span><span class="o">.</span><span class="n">configure_formatter</span><span class="p">(</span><span class="n">formatter_config_copy</span><span class="p">)</span> |
| <span class="n">handler</span><span class="o">.</span><span class="n">setFormatter</span><span class="p">(</span><span class="n">formatter</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">handler</span></div> |
| |
| <div class="viewcode-block" id="SensorWork._get_sensor_logger"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork._get_sensor_logger">[docs]</a> <span class="k">def</span> <span class="nf">_get_sensor_logger</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">si</span><span class="p">):</span> |
| <span class="sd">"""Return logger for a sensor instance object."""</span> |
| <span class="c1"># The created log_id is used inside of smart sensor as the key to fetch</span> |
| <span class="c1"># the corresponding in memory log handler.</span> |
| <span class="n">si</span><span class="o">.</span><span class="n">raw</span> <span class="o">=</span> <span class="kc">False</span> <span class="c1"># Otherwise set_context will fail</span> |
| <span class="n">log_id</span> <span class="o">=</span> <span class="s2">"-"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span> |
| <span class="p">[</span><span class="n">si</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">si</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="n">si</span><span class="o">.</span><span class="n">execution_date</span><span class="o">.</span><span class="n">strftime</span><span class="p">(</span><span class="s2">"%Y_%m_</span><span class="si">%d</span><span class="s2">T%H_%M_%S_</span><span class="si">%f</span><span class="s2">"</span><span class="p">),</span> <span class="nb">str</span><span class="p">(</span><span class="n">si</span><span class="o">.</span><span class="n">try_number</span><span class="p">)]</span> |
| <span class="p">)</span> |
| <span class="n">logger</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s1">'airflow.task'</span> <span class="o">+</span> <span class="s1">'.'</span> <span class="o">+</span> <span class="n">log_id</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">logger</span><span class="o">.</span><span class="n">handlers</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="n">handler</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">create_new_task_handler</span><span class="p">()</span> |
| <span class="n">logger</span><span class="o">.</span><span class="n">addHandler</span><span class="p">(</span><span class="n">handler</span><span class="p">)</span> |
| <span class="n">set_context</span><span class="p">(</span><span class="n">logger</span><span class="p">,</span> <span class="n">si</span><span class="p">)</span> |
| |
| <span class="n">line_break</span> <span class="o">=</span> <span class="s2">"-"</span> <span class="o">*</span> <span class="mi">120</span> |
| <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">line_break</span><span class="p">)</span> |
| <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> |
| <span class="s2">"Processing sensor task </span><span class="si">%s</span><span class="s2"> in smart sensor service on host: </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">ti_key</span><span class="p">,</span> <span class="n">get_hostname</span><span class="p">()</span> |
| <span class="p">)</span> |
| <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">line_break</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">logger</span></div> |
| |
| <div class="viewcode-block" id="SensorWork.close_sensor_logger"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork.close_sensor_logger">[docs]</a> <span class="k">def</span> <span class="nf">close_sensor_logger</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Close log handler for a sensor work."""</span> |
| <span class="k">for</span> <span class="n">handler</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">handlers</span><span class="p">:</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">handler</span><span class="o">.</span><span class="n">close</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="nb">print</span><span class="p">(</span><span class="n">e</span><span class="p">)</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="SensorWork.ti_key"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork.ti_key">[docs]</a> <span class="k">def</span> <span class="nf">ti_key</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Key for the task instance that maps to the sensor work."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">execution_date</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="SensorWork.cache_key"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorWork.cache_key">[docs]</a> <span class="k">def</span> <span class="nf">cache_key</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Key used to query in smart sensor for cached sensor work."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">operator</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">encoded_poke_context</span></div></div> |
| |
| |
| <div class="viewcode-block" id="CachedPokeWork"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.CachedPokeWork">[docs]</a><span class="k">class</span> <span class="nc">CachedPokeWork</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Wrapper class for the poke work inside smart sensor. It saves</span> |
| <span class="sd"> the sensor_task used to poke and recent poke result state.</span> |
| <span class="sd"> state: poke state.</span> |
| <span class="sd"> sensor_task: The cached object for executing the poke function.</span> |
| <span class="sd"> last_poke_time: The latest time this cached work being called.</span> |
| <span class="sd"> to_flush: If we should flush the cached work.</span> |
| <span class="sd"> """</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">state</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">sensor_task</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">last_poke_time</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">to_flush</span> <span class="o">=</span> <span class="kc">False</span> |
| |
| <div class="viewcode-block" id="CachedPokeWork.set_state"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.CachedPokeWork.set_state">[docs]</a> <span class="k">def</span> <span class="nf">set_state</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">state</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Set state for cached poke work.</span> |
| <span class="sd"> :param state: The sensor_instance state.</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">last_poke_time</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="CachedPokeWork.clear_state"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.CachedPokeWork.clear_state">[docs]</a> <span class="k">def</span> <span class="nf">clear_state</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Clear state for cached poke work."""</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="kc">None</span></div> |
| |
| <div class="viewcode-block" id="CachedPokeWork.set_to_flush"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.CachedPokeWork.set_to_flush">[docs]</a> <span class="k">def</span> <span class="nf">set_to_flush</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Mark this poke work to be popped from cached dict after current loop."""</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">to_flush</span> <span class="o">=</span> <span class="kc">True</span></div> |
| |
| <div class="viewcode-block" id="CachedPokeWork.is_expired"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.CachedPokeWork.is_expired">[docs]</a> <span class="k">def</span> <span class="nf">is_expired</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> The cached task object expires if there is no poke for 20 minutes.</span> |
| <span class="sd"> :return: Boolean</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">to_flush</span> <span class="ow">or</span> <span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">last_poke_time</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span> <span class="o">></span> <span class="mi">1200</span></div></div> |
| |
| |
| <div class="viewcode-block" id="SensorExceptionInfo"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo">[docs]</a><span class="k">class</span> <span class="nc">SensorExceptionInfo</span><span class="p">:</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Hold sensor exception information and the type of exception. For possible transient</span> |
| <span class="sd"> infra failure, give the task more chance to retry before fail it.</span> |
| <span class="sd"> """</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">exception_info</span><span class="p">,</span> |
| <span class="n">is_infra_failure</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">infra_failure_retry_window</span><span class="o">=</span><span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">(</span><span class="n">minutes</span><span class="o">=</span><span class="mi">130</span><span class="p">),</span> |
| <span class="p">):</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_exception_info</span> <span class="o">=</span> <span class="n">exception_info</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_is_infra_failure</span> <span class="o">=</span> <span class="n">is_infra_failure</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_retry_window</span> <span class="o">=</span> <span class="n">infra_failure_retry_window</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">set_infra_failure_timeout</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">fail_current_run</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">should_fail_current_run</span><span class="p">()</span> |
| |
| <div class="viewcode-block" id="SensorExceptionInfo.set_latest_exception"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.set_latest_exception">[docs]</a> <span class="k">def</span> <span class="nf">set_latest_exception</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exception_info</span><span class="p">,</span> <span class="n">is_infra_failure</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> This function set the latest exception information for sensor exception. If the exception</span> |
| <span class="sd"> implies an infra failure, this function will check the recorded infra failure timeout</span> |
| <span class="sd"> which was set at the first infra failure exception arrives. There is a 6 hours window</span> |
| <span class="sd"> for retry without failing current run.</span> |
| |
| <span class="sd"> :param exception_info: Details of the exception information.</span> |
| <span class="sd"> :param is_infra_failure: If current exception was caused by transient infra failure.</span> |
| <span class="sd"> There is a retry window _infra_failure_retry_window that the smart sensor will</span> |
| <span class="sd"> retry poke function without failing current task run.</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_exception_info</span> <span class="o">=</span> <span class="n">exception_info</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_is_infra_failure</span> <span class="o">=</span> <span class="n">is_infra_failure</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">set_infra_failure_timeout</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">fail_current_run</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">should_fail_current_run</span><span class="p">()</span></div> |
| |
| <div class="viewcode-block" id="SensorExceptionInfo.set_infra_failure_timeout"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.set_infra_failure_timeout">[docs]</a> <span class="k">def</span> <span class="nf">set_infra_failure_timeout</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Set the time point when the sensor should be failed if it kept getting infra</span> |
| <span class="sd"> failure.</span> |
| <span class="sd"> :return:</span> |
| <span class="sd"> """</span> |
| <span class="c1"># Only set the infra_failure_timeout if there is no existing one</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_is_infra_failure</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span> <span class="o">=</span> <span class="kc">None</span> |
| <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_retry_window</span></div> |
| |
| <div class="viewcode-block" id="SensorExceptionInfo.should_fail_current_run"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.should_fail_current_run">[docs]</a> <span class="k">def</span> <span class="nf">should_fail_current_run</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> :return: Should the sensor fail</span> |
| <span class="sd"> :type: boolean</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_infra_failure</span> <span class="ow">or</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="SensorExceptionInfo.exception_info"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.exception_info">[docs]</a> <span class="k">def</span> <span class="nf">exception_info</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">""":return: exception msg."""</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_exception_info</span></div> |
| |
| <span class="nd">@property</span> |
| <div class="viewcode-block" id="SensorExceptionInfo.is_infra_failure"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.is_infra_failure">[docs]</a> <span class="k">def</span> <span class="nf">is_infra_failure</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| |
| <span class="sd"> :return: If the exception is an infra failure</span> |
| <span class="sd"> :type: boolean</span> |
| <span class="sd"> """</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_is_infra_failure</span></div> |
| |
| <div class="viewcode-block" id="SensorExceptionInfo.is_expired"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SensorExceptionInfo.is_expired">[docs]</a> <span class="k">def</span> <span class="nf">is_expired</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> :return: If current exception need to be kept.</span> |
| <span class="sd"> :type: boolean</span> |
| <span class="sd"> """</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_is_infra_failure</span><span class="p">:</span> |
| <span class="k">return</span> <span class="kc">True</span> |
| <span class="k">return</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">_infra_failure_timeout</span> <span class="o">+</span> <span class="n">datetime</span><span class="o">.</span><span class="n">timedelta</span><span class="p">(</span><span class="n">minutes</span><span class="o">=</span><span class="mi">30</span><span class="p">)</span></div></div> |
| |
| |
| <div class="viewcode-block" id="SmartSensorOperator"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator">[docs]</a><span class="k">class</span> <span class="nc">SmartSensorOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">,</span> <span class="n">SkipMixin</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Smart sensor operators are derived from this class.</span> |
| |
| <span class="sd"> Smart Sensor operators keep refresh a dictionary by visiting DB.</span> |
| <span class="sd"> Taking qualified active sensor tasks. Different from sensor operator,</span> |
| <span class="sd"> Smart sensor operators poke for all sensor tasks in the dictionary at</span> |
| <span class="sd"> a time interval. When a criteria is met or fail by time out, it update</span> |
| <span class="sd"> all sensor task state in task_instance table</span> |
| |
| <span class="sd"> :param soft_fail: Set to true to mark the task as SKIPPED on failure</span> |
| <span class="sd"> :type soft_fail: bool</span> |
| <span class="sd"> :param poke_interval: Time in seconds that the job should wait in</span> |
| <span class="sd"> between each tries.</span> |
| <span class="sd"> :type poke_interval: int</span> |
| <span class="sd"> :param smart_sensor_timeout: Time, in seconds before the internal sensor</span> |
| <span class="sd"> job times out if poke_timeout is not defined.</span> |
| <span class="sd"> :type smart_sensor_timeout: float</span> |
| <span class="sd"> :param shard_min: shard code lower bound (inclusive)</span> |
| <span class="sd"> :type shard_min: int</span> |
| <span class="sd"> :param shard_max: shard code upper bound (exclusive)</span> |
| <span class="sd"> :type shard_max: int</span> |
| <span class="sd"> :param poke_timeout: Time, in seconds before the task times out and fails.</span> |
| <span class="sd"> :type poke_timeout: float</span> |
| <span class="sd"> """</span> |
| |
| <div class="viewcode-block" id="SmartSensorOperator.ui_color"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#e6f1f2'</span></div> |
| |
| <span class="nd">@apply_defaults</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">poke_interval</span><span class="o">=</span><span class="mi">180</span><span class="p">,</span> |
| <span class="n">smart_sensor_timeout</span><span class="o">=</span><span class="mi">60</span> <span class="o">*</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">24</span> <span class="o">*</span> <span class="mi">7</span><span class="p">,</span> |
| <span class="n">soft_fail</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> |
| <span class="n">shard_min</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> |
| <span class="n">shard_max</span><span class="o">=</span><span class="mi">100000</span><span class="p">,</span> |
| <span class="n">poke_timeout</span><span class="o">=</span><span class="mf">6.0</span><span class="p">,</span> |
| <span class="o">*</span><span class="n">args</span><span class="p">,</span> |
| <span class="o">**</span><span class="n">kwargs</span><span class="p">,</span> |
| <span class="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="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> |
| <span class="c1"># super(SmartSensorOperator, self).__init__(*args, **kwargs)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">poke_interval</span> <span class="o">=</span> <span class="n">poke_interval</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">soft_fail</span> <span class="o">=</span> <span class="n">soft_fail</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">timeout</span> <span class="o">=</span> <span class="n">smart_sensor_timeout</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_validate_input_values</span><span class="p">()</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">hostname</span> <span class="o">=</span> <span class="s2">""</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span> <span class="o">=</span> <span class="p">[]</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span> <span class="o">=</span> <span class="p">{}</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span> <span class="o">=</span> <span class="p">{}</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">max_tis_per_query</span> <span class="o">=</span> <span class="mi">50</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">shard_min</span> <span class="o">=</span> <span class="n">shard_min</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">shard_max</span> <span class="o">=</span> <span class="n">shard_max</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">poke_timeout</span> <span class="o">=</span> <span class="n">poke_timeout</span> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._validate_input_values"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._validate_input_values">[docs]</a> <span class="k">def</span> <span class="nf">_validate_input_values</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">poke_interval</span><span class="p">,</span> <span class="p">(</span><span class="nb">int</span><span class="p">,</span> <span class="nb">float</span><span class="p">))</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">poke_interval</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The poke_interval must be a non-negative number"</span><span class="p">)</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">timeout</span><span class="p">,</span> <span class="p">(</span><span class="nb">int</span><span class="p">,</span> <span class="nb">float</span><span class="p">))</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">timeout</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"The timeout must be a non-negative number"</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="SmartSensorOperator._load_sensor_works"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._load_sensor_works">[docs]</a> <span class="k">def</span> <span class="nf">_load_sensor_works</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="sd">"""</span> |
| <span class="sd"> Refresh sensor instances need to be handled by this operator. Create smart sensor</span> |
| <span class="sd"> internal object based on the information persisted in the sensor_instance table.</span> |
| |
| <span class="sd"> """</span> |
| <span class="n">SI</span> <span class="o">=</span> <span class="n">SensorInstance</span> |
| <span class="k">with</span> <span class="n">Stats</span><span class="o">.</span><span class="n">timer</span><span class="p">()</span> <span class="k">as</span> <span class="n">timer</span><span class="p">:</span> |
| <span class="n">query</span> <span class="o">=</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">SI</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</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">SENSING</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</span><span class="o">.</span><span class="n">shardcode</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">shard_max</span><span class="p">,</span> <span class="n">SI</span><span class="o">.</span><span class="n">shardcode</span> <span class="o">>=</span> <span class="bp">self</span><span class="o">.</span><span class="n">shard_min</span><span class="p">)</span> |
| <span class="p">)</span> |
| <span class="n">tis</span> <span class="o">=</span> <span class="n">query</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="s2">"Performance query </span><span class="si">%s</span><span class="s2"> tis, time: </span><span class="si">%.3f</span><span class="s2">"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">tis</span><span class="p">),</span> <span class="n">timer</span><span class="o">.</span><span class="n">duration</span><span class="p">)</span> |
| |
| <span class="c1"># Query without checking dagrun state might keep some failed dag_run tasks alive.</span> |
| <span class="c1"># Join with DagRun table will be very slow based on the number of sensor tasks we</span> |
| <span class="c1"># need to handle. We query all smart tasks in this operator</span> |
| <span class="c1"># and expect scheduler correct the states in _change_state_for_tis_without_dagrun()</span> |
| |
| <span class="n">sensor_works</span> <span class="o">=</span> <span class="p">[]</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="k">try</span><span class="p">:</span> |
| <span class="n">sensor_works</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">SensorWork</span><span class="p">(</span><span class="n">ti</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 at creating sensor work for ti </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">ti</span><span class="o">.</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">exception</span><span class="p">(</span><span class="n">e</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="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">"</span><span class="si">%d</span><span class="s2"> tasks detected."</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">sensor_works</span><span class="p">))</span> |
| |
| <span class="n">new_sensor_works</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">sensor_works</span> <span class="k">if</span> <span class="n">x</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">]</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_update_ti_hostname</span><span class="p">(</span><span class="n">new_sensor_works</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span> <span class="o">=</span> <span class="n">sensor_works</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="SmartSensorOperator._update_ti_hostname"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._update_ti_hostname">[docs]</a> <span class="k">def</span> <span class="nf">_update_ti_hostname</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_works</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="sd">"""</span> |
| <span class="sd"> Update task instance hostname for new sensor works.</span> |
| |
| <span class="sd"> :param sensor_works: Smart sensor internal object for a sensor task.</span> |
| <span class="sd"> :param session: The sqlalchemy session.</span> |
| <span class="sd"> """</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| <span class="n">ti_keys</span> <span class="o">=</span> <span class="p">[(</span><span class="n">x</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> <span class="n">x</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> <span class="n">x</span><span class="o">.</span><span class="n">execution_date</span><span class="p">)</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">sensor_works</span><span class="p">]</span> |
| |
| <span class="k">def</span> <span class="nf">update_ti_hostname_with_count</span><span class="p">(</span><span class="n">count</span><span class="p">,</span> <span class="n">ti_keys</span><span class="p">):</span> |
| <span class="c1"># Using or_ instead of in_ here to prevent from full table scan.</span> |
| <span class="n">tis</span> <span class="o">=</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">TI</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">or_</span><span class="p">(</span><span class="n">tuple_</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</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="o">.</span><span class="n">execution_date</span><span class="p">)</span> <span class="o">==</span> <span class="n">ti_key</span> <span class="k">for</span> <span class="n">ti_key</span> <span class="ow">in</span> <span class="n">ti_keys</span><span class="p">))</span> |
| <span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="p">)</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">ti</span><span class="o">.</span><span class="n">hostname</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hostname</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| |
| <span class="k">return</span> <span class="n">count</span> <span class="o">+</span> <span class="nb">len</span><span class="p">(</span><span class="n">ti_keys</span><span class="p">)</span> |
| |
| <span class="n">count</span> <span class="o">=</span> <span class="n">helpers</span><span class="o">.</span><span class="n">reduce_in_chunks</span><span class="p">(</span><span class="n">update_ti_hostname_with_count</span><span class="p">,</span> <span class="n">ti_keys</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">max_tis_per_query</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">count</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">"Updated hostname on </span><span class="si">%s</span><span class="s2"> tis."</span><span class="p">,</span> <span class="n">count</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="SmartSensorOperator._mark_multi_state"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._mark_multi_state">[docs]</a> <span class="k">def</span> <span class="nf">_mark_multi_state</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">operator</span><span class="p">,</span> <span class="n">poke_hash</span><span class="p">,</span> <span class="n">encoded_poke_context</span><span class="p">,</span> <span class="n">state</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="sd">"""</span> |
| <span class="sd"> Mark state for multiple tasks in the task_instance table to a new state if they have</span> |
| <span class="sd"> the same signature as the poke_hash.</span> |
| |
| <span class="sd"> :param operator: The sensor's operator class name.</span> |
| <span class="sd"> :param poke_hash: The hash code generated from sensor's poke context.</span> |
| <span class="sd"> :param encoded_poke_context: The raw encoded poke_context.</span> |
| <span class="sd"> :param state: Set multiple sensor tasks to this state.</span> |
| <span class="sd"> :param session: The sqlalchemy session.</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">def</span> <span class="nf">mark_state</span><span class="p">(</span><span class="n">ti</span><span class="p">,</span> <span class="n">sensor_instance</span><span class="p">):</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span> |
| <span class="n">sensor_instance</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="ow">in</span> <span class="n">State</span><span class="o">.</span><span class="n">finished</span><span class="p">:</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">end_date</span> <span class="o">=</span> <span class="n">end_date</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">set_duration</span><span class="p">()</span> |
| |
| <span class="n">SI</span> <span class="o">=</span> <span class="n">SensorInstance</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| |
| <span class="n">count_marked</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">query_result</span> <span class="o">=</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">TI</span><span class="p">,</span> <span class="n">SI</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">join</span><span class="p">(</span> |
| <span class="n">TI</span><span class="p">,</span> |
| <span class="n">and_</span><span class="p">(</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">SI</span><span class="o">.</span><span class="n">dag_id</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">SI</span><span class="o">.</span><span class="n">task_id</span><span class="p">,</span> |
| <span class="n">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">SI</span><span class="o">.</span><span class="n">execution_date</span><span class="p">,</span> |
| <span class="p">),</span> |
| <span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</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">SENSING</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</span><span class="o">.</span><span class="n">hashcode</span> <span class="o">==</span> <span class="n">poke_hash</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</span><span class="o">.</span><span class="n">operator</span> <span class="o">==</span> <span class="n">operator</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">with_for_update</span><span class="p">()</span> |
| <span class="o">.</span><span class="n">all</span><span class="p">()</span> |
| <span class="p">)</span> |
| |
| <span class="n">end_date</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="k">for</span> <span class="n">ti</span><span class="p">,</span> <span class="n">sensor_instance</span> <span class="ow">in</span> <span class="n">query_result</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">sensor_instance</span><span class="o">.</span><span class="n">poke_context</span> <span class="o">!=</span> <span class="n">encoded_poke_context</span><span class="p">:</span> |
| <span class="k">continue</span> |
| |
| <span class="n">ti</span><span class="o">.</span><span class="n">hostname</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hostname</span> |
| <span class="k">if</span> <span class="n">ti</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">SENSING</span><span class="p">:</span> |
| <span class="n">mark_state</span><span class="p">(</span><span class="n">ti</span><span class="o">=</span><span class="n">ti</span><span class="p">,</span> <span class="n">sensor_instance</span><span class="o">=</span><span class="n">sensor_instance</span><span class="p">)</span> |
| <span class="n">count_marked</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># ti.state != State.SENSING</span> |
| <span class="n">sensor_instance</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">ti</span><span class="o">.</span><span class="n">state</span> |
| |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</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">warning</span><span class="p">(</span><span class="s2">"Exception _mark_multi_state in smart sensor for hashcode </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">poke_hash</span><span class="p">))</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</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">"Marked </span><span class="si">%s</span><span class="s2"> tasks out of </span><span class="si">%s</span><span class="s2"> to state </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">count_marked</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">query_result</span><span class="p">),</span> <span class="n">state</span><span class="p">)</span></div> |
| |
| <span class="nd">@provide_session</span> |
| <div class="viewcode-block" id="SmartSensorOperator._retry_or_fail_task"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._retry_or_fail_task">[docs]</a> <span class="k">def</span> <span class="nf">_retry_or_fail_task</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">,</span> <span class="n">error</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="sd">"""</span> |
| <span class="sd"> Change single task state for sensor task. For final state, set the end_date.</span> |
| <span class="sd"> Since smart sensor take care all retries in one process. Failed sensor tasks</span> |
| <span class="sd"> logically experienced all retries and the try_number should be set to max_tries.</span> |
| |
| <span class="sd"> :param sensor_work: The sensor_work with exception.</span> |
| <span class="sd"> :type sensor_work: SensorWork</span> |
| <span class="sd"> :param error: The error message for this sensor_work.</span> |
| <span class="sd"> :type error: str.</span> |
| <span class="sd"> :param session: The sqlalchemy session.</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">def</span> <span class="nf">email_alert</span><span class="p">(</span><span class="n">task_instance</span><span class="p">,</span> <span class="n">error_info</span><span class="p">):</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">subject</span><span class="p">,</span> <span class="n">html_content</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">task_instance</span><span class="o">.</span><span class="n">get_email_subject_content</span><span class="p">(</span><span class="n">error_info</span><span class="p">)</span> |
| <span class="n">email</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'email'</span><span class="p">)</span> |
| |
| <span class="n">send_email</span><span class="p">(</span><span class="n">email</span><span class="p">,</span> <span class="n">subject</span><span class="p">,</span> <span class="n">html_content</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="n">sensor_work</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">"Exception alerting email."</span><span class="p">)</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> |
| |
| <span class="k">def</span> <span class="nf">handle_failure</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">,</span> <span class="n">ti</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'retries'</span><span class="p">)</span> <span class="ow">and</span> <span class="n">ti</span><span class="o">.</span><span class="n">try_number</span> <span class="o"><=</span> <span class="n">ti</span><span class="o">.</span><span class="n">max_tries</span><span class="p">:</span> |
| <span class="c1"># retry</span> |
| <span class="n">ti</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">UP_FOR_RETRY</span> |
| <span class="k">if</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'email_on_retry'</span><span class="p">)</span> <span class="ow">and</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span> |
| <span class="s1">'email'</span> |
| <span class="p">):</span> |
| <span class="n">sensor_work</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">"</span><span class="si">%s</span><span class="s2"> sending email alert for retry"</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">)</span> |
| <span class="n">email_alert</span><span class="p">(</span><span class="n">ti</span><span class="p">,</span> <span class="n">error</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">ti</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">FAILED</span> |
| <span class="k">if</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span> |
| <span class="s1">'email_on_failure'</span> |
| <span class="p">)</span> <span class="ow">and</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'email'</span><span class="p">):</span> |
| <span class="n">sensor_work</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">"</span><span class="si">%s</span><span class="s2"> sending email alert for failure"</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">)</span> |
| <span class="n">email_alert</span><span class="p">(</span><span class="n">ti</span><span class="p">,</span> <span class="n">error</span><span class="p">)</span> |
| |
| <span class="k">try</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="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span> |
| <span class="n">TI</span> <span class="o">=</span> <span class="n">TaskInstance</span> |
| <span class="n">SI</span> <span class="o">=</span> <span class="n">SensorInstance</span> |
| <span class="n">sensor_instance</span> <span class="o">=</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">SI</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">SI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">,</span> <span class="n">SI</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">SI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">execution_date</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">with_for_update</span><span class="p">()</span> |
| <span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">sensor_instance</span><span class="o">.</span><span class="n">hashcode</span> <span class="o">!=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">hashcode</span><span class="p">:</span> |
| <span class="c1"># Return without setting state</span> |
| <span class="k">return</span> |
| |
| <span class="n">ti</span> <span class="o">=</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">TI</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">filter</span><span class="p">(</span><span class="n">TI</span><span class="o">.</span><span class="n">dag_id</span> <span class="o">==</span> <span class="n">dag_id</span><span class="p">,</span> <span class="n">TI</span><span class="o">.</span><span class="n">task_id</span> <span class="o">==</span> <span class="n">task_id</span><span class="p">,</span> <span class="n">TI</span><span class="o">.</span><span class="n">execution_date</span> <span class="o">==</span> <span class="n">execution_date</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">with_for_update</span><span class="p">()</span> |
| <span class="o">.</span><span class="n">first</span><span class="p">()</span> |
| <span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">ti</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">ti</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">SENSING</span><span class="p">:</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">hostname</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hostname</span> |
| <span class="n">handle_failure</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">,</span> <span class="n">ti</span><span class="p">)</span> |
| |
| <span class="n">sensor_instance</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">FAILED</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">end_date</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| <span class="n">ti</span><span class="o">.</span><span class="n">set_duration</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">sensor_instance</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">ti</span><span class="o">.</span><span class="n">state</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">sensor_instance</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">merge</span><span class="p">(</span><span class="n">ti</span><span class="p">)</span> |
| <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span> |
| |
| <span class="n">sensor_work</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">"Task </span><span class="si">%s</span><span class="s2"> got an error: </span><span class="si">%s</span><span class="s2">. Set the state to failed. Exit."</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">),</span> <span class="n">error</span> |
| <span class="p">)</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">close_sensor_logger</span><span class="p">()</span> |
| |
| <span class="k">except</span> <span class="n">AirflowException</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> |
| <span class="n">sensor_work</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">"Exception on failing </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">)</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._check_and_handle_ti_timeout"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._check_and_handle_ti_timeout">[docs]</a> <span class="k">def</span> <span class="nf">_check_and_handle_ti_timeout</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Check if a sensor task in smart sensor is timeout. Could be either sensor operator timeout</span> |
| <span class="sd"> or general operator execution_timeout.</span> |
| |
| <span class="sd"> :param sensor_work: SensorWork</span> |
| <span class="sd"> """</span> |
| <span class="n">task_timeout</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'timeout'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">timeout</span><span class="p">)</span> |
| <span class="n">task_execution_timeout</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">execution_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'execution_timeout'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">task_execution_timeout</span><span class="p">:</span> |
| <span class="n">task_timeout</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">task_timeout</span><span class="p">,</span> <span class="n">task_execution_timeout</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">start_date</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span> <span class="o">></span> <span class="n">task_timeout</span><span class="p">:</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="s2">"Sensor Timeout"</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">error</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_retry_or_fail_task</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">,</span> <span class="n">error</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._handle_poke_exception"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._handle_poke_exception">[docs]</a> <span class="k">def</span> <span class="nf">_handle_poke_exception</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Fail task if accumulated exceptions exceeds retries.</span> |
| |
| <span class="sd"> :param sensor_work: SensorWork</span> |
| <span class="sd"> """</span> |
| <span class="n">sensor_exception</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">cache_key</span><span class="p">)</span> |
| <span class="n">error</span> <span class="o">=</span> <span class="n">sensor_exception</span><span class="o">.</span><span class="n">exception_info</span> |
| <span class="n">sensor_work</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">"Handling poke exception: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">error</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">sensor_exception</span><span class="o">.</span><span class="n">fail_current_run</span><span class="p">:</span> |
| <span class="k">if</span> <span class="n">sensor_exception</span><span class="o">.</span><span class="n">is_infra_failure</span><span class="p">:</span> |
| <span class="n">sensor_work</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">"Task </span><span class="si">%s</span><span class="s2"> failed by infra failure in smart sensor."</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span> |
| <span class="p">)</span> |
| <span class="c1"># There is a risk for sensor object cached in smart sensor keep throwing</span> |
| <span class="c1"># exception and cause an infra failure. To make sure the sensor tasks after</span> |
| <span class="c1"># retry will not fall into same object and have endless infra failure,</span> |
| <span class="c1"># we mark the sensor task after an infra failure so that it can be popped</span> |
| <span class="c1"># before next poke loop.</span> |
| <span class="n">cache_key</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">cache_key</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="p">[</span><span class="n">cache_key</span><span class="p">]</span><span class="o">.</span><span class="n">set_to_flush</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">sensor_work</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">"Task </span><span class="si">%s</span><span class="s2"> failed by exceptions."</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_retry_or_fail_task</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">,</span> <span class="n">error</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">sensor_work</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">"Exception detected, retrying without failing current run."</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_check_and_handle_ti_timeout</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._process_sensor_work_with_cached_state"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._process_sensor_work_with_cached_state">[docs]</a> <span class="k">def</span> <span class="nf">_process_sensor_work_with_cached_state</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">,</span> <span class="n">state</span><span class="p">):</span> |
| <span class="k">if</span> <span class="n">state</span> <span class="o">==</span> <span class="n">PokeState</span><span class="o">.</span><span class="n">LANDED</span><span class="p">:</span> |
| <span class="n">sensor_work</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">"Task </span><span class="si">%s</span><span class="s2"> succeeded"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span><span class="p">))</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">close_sensor_logger</span><span class="p">()</span> |
| |
| <span class="k">if</span> <span class="n">state</span> <span class="o">==</span> <span class="n">PokeState</span><span class="o">.</span><span class="n">NOT_LANDED</span><span class="p">:</span> |
| <span class="c1"># Handle timeout if connection valid but not landed yet</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_check_and_handle_ti_timeout</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span> |
| <span class="k">elif</span> <span class="n">state</span> <span class="o">==</span> <span class="n">PokeState</span><span class="o">.</span><span class="n">POKE_EXCEPTION</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_handle_poke_exception</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._execute_sensor_work"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._execute_sensor_work">[docs]</a> <span class="k">def</span> <span class="nf">_execute_sensor_work</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">):</span> |
| <span class="n">ti_key</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">ti_key</span> |
| <span class="n">log</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">log</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">log</span> |
| <span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Sensing ti: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">ti_key</span><span class="p">))</span> |
| <span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Poking with arguments: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">encoded_poke_context</span><span class="p">)</span> |
| |
| <span class="n">cache_key</span> <span class="o">=</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">cache_key</span> |
| <span class="k">if</span> <span class="n">cache_key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="p">:</span> |
| <span class="c1"># create an empty cached_work for a new cache_key</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="p">[</span><span class="n">cache_key</span><span class="p">]</span> <span class="o">=</span> <span class="n">CachedPokeWork</span><span class="p">()</span> |
| |
| <span class="n">cached_work</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="p">[</span><span class="n">cache_key</span><span class="p">]</span> |
| |
| <span class="k">if</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">state</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="c1"># Have a valid cached state, don't poke twice in certain time interval</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_process_sensor_work_with_cached_state</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">,</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">state</span><span class="p">)</span> |
| <span class="k">return</span> |
| |
| <span class="k">try</span><span class="p">:</span> |
| <span class="k">with</span> <span class="n">timeout</span><span class="p">(</span><span class="n">seconds</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">poke_timeout</span><span class="p">):</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">poke</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">):</span> |
| <span class="c1"># Got a landed signal, mark all tasks waiting for this partition</span> |
| <span class="n">cached_work</span><span class="o">.</span><span class="n">set_state</span><span class="p">(</span><span class="n">PokeState</span><span class="o">.</span><span class="n">LANDED</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_mark_multi_state</span><span class="p">(</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">operator</span><span class="p">,</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">hashcode</span><span class="p">,</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">encoded_poke_context</span><span class="p">,</span> |
| <span class="n">State</span><span class="o">.</span><span class="n">SUCCESS</span><span class="p">,</span> |
| <span class="p">)</span> |
| |
| <span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Task </span><span class="si">%s</span><span class="s2"> succeeded"</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">ti_key</span><span class="p">))</span> |
| <span class="n">sensor_work</span><span class="o">.</span><span class="n">close_sensor_logger</span><span class="p">()</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="c1"># Not landed yet. Handle possible timeout</span> |
| <span class="n">cached_work</span><span class="o">.</span><span class="n">set_state</span><span class="p">(</span><span class="n">PokeState</span><span class="o">.</span><span class="n">NOT_LANDED</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_check_and_handle_ti_timeout</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">cache_key</span><span class="p">,</span> <span class="kc">None</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="c1"># The retry_infra_failure decorator inside hive_hooks will raise exception with</span> |
| <span class="c1"># is_infra_failure == True. Long poking timeout here is also considered an infra</span> |
| <span class="c1"># failure. Other exceptions should fail.</span> |
| <span class="n">is_infra_failure</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="s1">'is_infra_failure'</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">AirflowTaskTimeout</span><span class="p">)</span> |
| <span class="n">exception_info</span> <span class="o">=</span> <span class="n">traceback</span><span class="o">.</span><span class="n">format_exc</span><span class="p">()</span> |
| <span class="n">cached_work</span><span class="o">.</span><span class="n">set_state</span><span class="p">(</span><span class="n">PokeState</span><span class="o">.</span><span class="n">POKE_EXCEPTION</span><span class="p">)</span> |
| |
| <span class="k">if</span> <span class="n">cache_key</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="p">[</span><span class="n">cache_key</span><span class="p">]</span><span class="o">.</span><span class="n">set_latest_exception</span><span class="p">(</span> |
| <span class="n">exception_info</span><span class="p">,</span> <span class="n">is_infra_failure</span><span class="o">=</span><span class="n">is_infra_failure</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">cached_sensor_exceptions</span><span class="p">[</span><span class="n">cache_key</span><span class="p">]</span> <span class="o">=</span> <span class="n">SensorExceptionInfo</span><span class="p">(</span> |
| <span class="n">exception_info</span><span class="p">,</span> <span class="n">is_infra_failure</span><span class="o">=</span><span class="n">is_infra_failure</span> |
| <span class="p">)</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_handle_poke_exception</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator.flush_cached_sensor_poke_results"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator.flush_cached_sensor_poke_results">[docs]</a> <span class="k">def</span> <span class="nf">flush_cached_sensor_poke_results</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="sd">"""Flush outdated cached sensor states saved in previous loop."""</span> |
| <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">cached_work</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="k">if</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">is_expired</span><span class="p">():</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">key</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">cached_work</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="kc">None</span> |
| |
| <span class="k">for</span> <span class="n">ti_key</span><span class="p">,</span> <span class="n">sensor_exception</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> |
| <span class="k">if</span> <span class="n">sensor_exception</span><span class="o">.</span><span class="n">fail_current_run</span> <span class="ow">or</span> <span class="n">sensor_exception</span><span class="o">.</span><span class="n">is_expired</span><span class="p">():</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">ti_key</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator.poke"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator.poke">[docs]</a> <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sensor_work</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Function that the sensors defined while deriving this class should</span> |
| <span class="sd"> override.</span> |
| |
| <span class="sd"> """</span> |
| <span class="n">cached_work</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="p">[</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">cache_key</span><span class="p">]</span> |
| <span class="k">if</span> <span class="ow">not</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">sensor_task</span><span class="p">:</span> |
| <span class="n">init_args</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">poke_context</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> <span class="o">+</span> <span class="p">[(</span><span class="s1">'task_id'</span><span class="p">,</span> <span class="n">sensor_work</span><span class="o">.</span><span class="n">task_id</span><span class="p">)])</span> |
| <span class="n">operator_class</span> <span class="o">=</span> <span class="n">import_string</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">op_classpath</span><span class="p">)</span> |
| <span class="n">cached_work</span><span class="o">.</span><span class="n">sensor_task</span> <span class="o">=</span> <span class="n">operator_class</span><span class="p">(</span><span class="o">**</span><span class="n">init_args</span><span class="p">)</span> |
| |
| <span class="k">return</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">sensor_task</span><span class="o">.</span><span class="n">poke</span><span class="p">(</span><span class="n">sensor_work</span><span class="o">.</span><span class="n">poke_context</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator._emit_loop_stats"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator._emit_loop_stats">[docs]</a> <span class="k">def</span> <span class="nf">_emit_loop_stats</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">try</span><span class="p">:</span> |
| <span class="n">count_poke</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="n">count_poke_success</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="n">count_poke_exception</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="n">count_exception_failures</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="n">count_infra_failure</span> <span class="o">=</span> <span class="mi">0</span> |
| <span class="k">for</span> <span class="n">cached_work</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_dedup_works</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> |
| <span class="k">if</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">state</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">continue</span> |
| <span class="n">count_poke</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">if</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">PokeState</span><span class="o">.</span><span class="n">LANDED</span><span class="p">:</span> |
| <span class="n">count_poke_success</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">elif</span> <span class="n">cached_work</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">PokeState</span><span class="o">.</span><span class="n">POKE_EXCEPTION</span><span class="p">:</span> |
| <span class="n">count_poke_exception</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">for</span> <span class="n">cached_exception</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_sensor_exceptions</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> |
| <span class="k">if</span> <span class="n">cached_exception</span><span class="o">.</span><span class="n">is_infra_failure</span> <span class="ow">and</span> <span class="n">cached_exception</span><span class="o">.</span><span class="n">fail_current_run</span><span class="p">:</span> |
| <span class="n">count_infra_failure</span> <span class="o">+=</span> <span class="mi">1</span> |
| <span class="k">if</span> <span class="n">cached_exception</span><span class="o">.</span><span class="n">fail_current_run</span><span class="p">:</span> |
| <span class="n">count_exception_failures</span> <span class="o">+=</span> <span class="mi">1</span> |
| |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.poked_tasks"</span><span class="p">,</span> <span class="n">count_poke</span><span class="p">)</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.poked_success"</span><span class="p">,</span> <span class="n">count_poke_success</span><span class="p">)</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.poked_exception"</span><span class="p">,</span> <span class="n">count_poke_exception</span><span class="p">)</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.exception_failures"</span><span class="p">,</span> <span class="n">count_exception_failures</span><span class="p">)</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.infra_failures"</span><span class="p">,</span> <span class="n">count_infra_failure</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 at getting loop stats </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">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exc_info</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator.execute"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span> |
| <span class="n">started_at</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">hostname</span> <span class="o">=</span> <span class="n">get_hostname</span><span class="p">()</span> |
| <span class="k">while</span> <span class="kc">True</span><span class="p">:</span> |
| <span class="n">poke_start_time</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">flush_cached_sensor_poke_results</span><span class="p">()</span> |
| |
| <span class="bp">self</span><span class="o">.</span><span class="n">_load_sensor_works</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">"Loaded </span><span class="si">%s</span><span class="s2"> sensor_works"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">))</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.loaded_tasks"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">))</span> |
| |
| <span class="k">for</span> <span class="n">sensor_work</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_execute_sensor_work</span><span class="p">(</span><span class="n">sensor_work</span><span class="p">)</span> |
| |
| <span class="n">duration</span> <span class="o">=</span> <span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="n">poke_start_time</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</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">"Taking </span><span class="si">%s</span><span class="s2"> to execute </span><span class="si">%s</span><span class="s2"> tasks."</span><span class="p">,</span> <span class="n">duration</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">))</span> |
| |
| <span class="n">Stats</span><span class="o">.</span><span class="n">timing</span><span class="p">(</span><span class="s2">"smart_sensor_operator.loop_duration"</span><span class="p">,</span> <span class="n">duration</span><span class="p">)</span> |
| <span class="n">Stats</span><span class="o">.</span><span class="n">gauge</span><span class="p">(</span><span class="s2">"smart_sensor_operator.executed_tasks"</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sensor_works</span><span class="p">))</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_emit_loop_stats</span><span class="p">()</span> |
| |
| <span class="k">if</span> <span class="n">duration</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">poke_interval</span><span class="p">:</span> |
| <span class="n">sleep</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">poke_interval</span> <span class="o">-</span> <span class="n">duration</span><span class="p">)</span> |
| <span class="k">if</span> <span class="p">(</span><span class="n">timezone</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span> <span class="o">-</span> <span class="n">started_at</span><span class="p">)</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">timeout</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">"Time is out for smart sensor."</span><span class="p">)</span> |
| <span class="k">return</span></div> |
| |
| <div class="viewcode-block" id="SmartSensorOperator.on_kill"><a class="viewcode-back" href="../../../_api/airflow/sensors/smart_sensor/index.html#airflow.sensors.smart_sensor.SmartSensorOperator.on_kill">[docs]</a> <span class="k">def</span> <span class="nf">on_kill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="k">pass</span></div></div> |
| |
| |
| <span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'__main__'</span><span class="p">:</span> |
| <span class="n">SmartSensorOperator</span><span class="p">(</span><span class="n">task_id</span><span class="o">=</span><span class="s1">'test'</span><span class="p">)</span><span class="o">.</span><span class="n">execute</span><span class="p">({})</span> |
| </pre></div> |
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