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Posted to commits@airflow.apache.org by ka...@apache.org on 2018/08/27 16:26:42 UTC
[22/51] [partial] incubator-airflow-site git commit: 1.10.0
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+ <h1>Source code for airflow.contrib.sensors.aws_redshift_cluster_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.redshift_hook</span> <span class="k">import</span> <span class="n">RedshiftHook</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="AwsRedshiftClusterSensor"><a class="viewcode-back" href="../../../../integration.html#airflow.contrib.sensors.aws_redshift_cluster_sensor.AwsRedshiftClusterSensor">[docs]</a><span class="k">class</span> <span class="nc">AwsRedshiftClusterSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Waits for a Redshift cluster to reach a specific status.</span>
+
+<span class="sd"> :param cluster_identifier: The identifier for the cluster being pinged.</span>
+<span class="sd"> :type cluster_identifier: str</span>
+<span class="sd"> :param target_status: The cluster status desired.</span>
+<span class="sd"> :type target_status: str</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'cluster_identifier'</span><span class="p">,</span> <span class="s1">'target_status'</span><span class="p">)</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
+ <span class="n">cluster_identifier</span><span class="p">,</span>
+ <span class="n">target_status</span><span class="o">=</span><span class="s1">'available'</span><span class="p">,</span>
+ <span class="n">aws_conn_id</span><span class="o">=</span><span class="s1">'aws_default'</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span>
+ <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">AwsRedshiftClusterSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">cluster_identifier</span> <span class="o">=</span> <span class="n">cluster_identifier</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">target_status</span> <span class="o">=</span> <span class="n">target_status</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span> <span class="o">=</span> <span class="n">aws_conn_id</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Poking for status : </span><span class="si">{self.target_status}</span><span class="se">\n</span><span class="s1">'</span>
+ <span class="s1">'for cluster </span><span class="si">{self.cluster_identifier}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span>
+ <span class="n">hook</span> <span class="o">=</span> <span class="n">RedshiftHook</span><span class="p">(</span><span class="n">aws_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">hook</span><span class="o">.</span><span class="n">cluster_status</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cluster_identifier</span><span class="p">)</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">target_status</span></div>
+</pre></div>
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diff --git a/_modules/airflow/contrib/sensors/bash_sensor.html b/_modules/airflow/contrib/sensors/bash_sensor.html
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+ <h1>Source code for airflow.contrib.sensors.bash_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+
+<span class="kn">from</span> <span class="nn">builtins</span> <span class="k">import</span> <span class="nb">bytes</span>
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">from</span> <span class="nn">subprocess</span> <span class="k">import</span> <span class="n">Popen</span><span class="p">,</span> <span class="n">STDOUT</span><span class="p">,</span> <span class="n">PIPE</span>
+<span class="kn">from</span> <span class="nn">tempfile</span> <span class="k">import</span> <span class="n">gettempdir</span><span class="p">,</span> <span class="n">NamedTemporaryFile</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.file</span> <span class="k">import</span> <span class="n">TemporaryDirectory</span>
+
+
+<div class="viewcode-block" id="BashSensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.bash_sensor.BashSensor">[docs]</a><span class="k">class</span> <span class="nc">BashSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Executes a bash command/script and returns True if and only if the</span>
+<span class="sd"> return code is 0.</span>
+
+<span class="sd"> :param bash_command: The command, set of commands or reference to a</span>
+<span class="sd"> bash script (must be '.sh') to be executed.</span>
+<span class="sd"> :type bash_command: string</span>
+
+<span class="sd"> :param env: If env is not None, it must be a mapping that defines the</span>
+<span class="sd"> environment variables for the new process; these are used instead</span>
+<span class="sd"> of inheriting the current process environment, which is the default</span>
+<span class="sd"> behavior. (templated)</span>
+<span class="sd"> :type env: dict</span>
+<span class="sd"> :param output_encoding: output encoding of bash command.</span>
+<span class="sd"> :type output_encoding: string</span>
+<span class="sd"> """</span>
+
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'bash_command'</span><span class="p">,</span> <span class="s1">'env'</span><span class="p">)</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span>
+ <span class="n">bash_command</span><span class="p">,</span>
+ <span class="n">env</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">output_encoding</span><span class="o">=</span><span class="s1">'utf-8'</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">BashSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">bash_command</span> <span class="o">=</span> <span class="n">bash_command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">env</span> <span class="o">=</span> <span class="n">env</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">output_encoding</span> <span class="o">=</span> <span class="n">output_encoding</span>
+
+<div class="viewcode-block" id="BashSensor.poke"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.bash_sensor.BashSensor.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">context</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Execute the bash command in a temporary directory</span>
+<span class="sd"> which will be cleaned afterwards</span>
+<span class="sd"> """</span>
+ <span class="n">bash_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">bash_command</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">"Tmp dir root location: </span><span class="se">\n</span><span class="s2"> </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">gettempdir</span><span class="p">())</span>
+ <span class="k">with</span> <span class="n">TemporaryDirectory</span><span class="p">(</span><span class="n">prefix</span><span class="o">=</span><span class="s1">'airflowtmp'</span><span class="p">)</span> <span class="k">as</span> <span class="n">tmp_dir</span><span class="p">:</span>
+ <span class="k">with</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="nb">dir</span><span class="o">=</span><span class="n">tmp_dir</span><span class="p">,</span> <span class="n">prefix</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
+
+ <span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="nb">bytes</span><span class="p">(</span><span class="n">bash_command</span><span class="p">,</span> <span class="s1">'utf_8'</span><span class="p">))</span>
+ <span class="n">f</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+ <span class="n">fname</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">name</span>
+ <span class="n">script_location</span> <span class="o">=</span> <span class="n">tmp_dir</span> <span class="o">+</span> <span class="s2">"/"</span> <span class="o">+</span> <span class="n">fname</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">"Temporary script location: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span>
+ <span class="n">script_location</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">"Running command: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">bash_command</span><span class="p">)</span>
+ <span class="n">sp</span> <span class="o">=</span> <span class="n">Popen</span><span class="p">(</span>
+ <span class="p">[</span><span class="s1">'bash'</span><span class="p">,</span> <span class="n">fname</span><span class="p">],</span>
+ <span class="n">stdout</span><span class="o">=</span><span class="n">PIPE</span><span class="p">,</span> <span class="n">stderr</span><span class="o">=</span><span class="n">STDOUT</span><span class="p">,</span>
+ <span class="n">close_fds</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">cwd</span><span class="o">=</span><span class="n">tmp_dir</span><span class="p">,</span>
+ <span class="n">env</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">env</span><span class="p">,</span> <span class="n">preexec_fn</span><span class="o">=</span><span class="n">os</span><span class="o">.</span><span class="n">setsid</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">sp</span> <span class="o">=</span> <span class="n">sp</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">"Output:"</span><span class="p">)</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="s1">''</span>
+ <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="nb">iter</span><span class="p">(</span><span class="n">sp</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">readline</span><span class="p">,</span> <span class="sa">b</span><span class="s1">''</span><span class="p">):</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">output_encoding</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
+ <span class="n">sp</span><span class="o">.</span><span class="n">wait</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">"Command exited with "</span>
+ <span class="s2">"return code </span><span class="si">{0}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">sp</span><span class="o">.</span><span class="n">returncode</span><span class="p">))</span>
+
+ <span class="k">return</span> <span class="ow">not</span> <span class="n">sp</span><span class="o">.</span><span class="n">returncode</span></div></div>
+</pre></div>
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----------------------------------------------------------------------
diff --git a/_modules/airflow/contrib/sensors/bigquery_sensor.html b/_modules/airflow/contrib/sensors/bigquery_sensor.html
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+ <h1>Source code for airflow.contrib.sensors.bigquery_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.bigquery_hook</span> <span class="k">import</span> <span class="n">BigQueryHook</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+
+
+<div class="viewcode-block" id="BigQueryTableSensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.bigquery_sensor.BigQueryTableSensor">[docs]</a><span class="k">class</span> <span class="nc">BigQueryTableSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Checks for the existence of a table in Google Bigquery.</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'dataset_id'</span><span class="p">,</span> <span class="s1">'table_id'</span><span class="p">,)</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#f0eee4'</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">project_id</span><span class="p">,</span>
+ <span class="n">dataset_id</span><span class="p">,</span>
+ <span class="n">table_id</span><span class="p">,</span>
+ <span class="n">bigquery_conn_id</span><span class="o">=</span><span class="s1">'bigquery_default_conn'</span><span class="p">,</span>
+ <span class="n">delegate_to</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span>
+ <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Create a new BigQueryTableSensor.</span>
+
+<span class="sd"> :param project_id: The Google cloud project in which to look for the table. The connection supplied to the hook</span>
+<span class="sd"> must provide access to the specified project.</span>
+<span class="sd"> :type project_id: string</span>
+<span class="sd"> :param dataset_id: The name of the dataset in which to look for the table.</span>
+<span class="sd"> storage bucket.</span>
+<span class="sd"> :type dataset_id: string</span>
+<span class="sd"> :param table_id: The name of the table to check the existence of.</span>
+<span class="sd"> :type table_id: string</span>
+<span class="sd"> :param bigquery_conn_id: The connection ID to use when connecting to Google BigQuery.</span>
+<span class="sd"> :type bigquery_conn_id: string</span>
+<span class="sd"> :param delegate_to: The account to impersonate, if any.</span>
+<span class="sd"> For this to work, the service account making the request must have domain-wide delegation enabled.</span>
+<span class="sd"> :type delegate_to: string</span>
+<span class="sd"> """</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">BigQueryTableSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">project_id</span> <span class="o">=</span> <span class="n">project_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">dataset_id</span> <span class="o">=</span> <span class="n">dataset_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">table_id</span> <span class="o">=</span> <span class="n">table_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">bigquery_conn_id</span> <span class="o">=</span> <span class="n">bigquery_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span> <span class="o">=</span> <span class="n">delegate_to</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="n">table_uri</span> <span class="o">=</span> <span class="s1">'</span><span class="si">{0}</span><span class="s1">:</span><span class="si">{1}</span><span class="s1">.</span><span class="si">{2}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataset_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_id</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Sensor checks existence of table: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">table_uri</span><span class="p">)</span>
+ <span class="n">hook</span> <span class="o">=</span> <span class="n">BigQueryHook</span><span class="p">(</span>
+ <span class="n">bigquery_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">bigquery_conn_id</span><span class="p">,</span>
+ <span class="n">delegate_to</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">hook</span><span class="o">.</span><span class="n">table_exists</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">project_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">dataset_id</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_id</span><span class="p">)</span></div>
+</pre></div>
+
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+ <h1>Source code for airflow.contrib.sensors.datadog_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.contrib.hooks.datadog_hook</span> <span class="k">import</span> <span class="n">DatadogHook</span>
+<span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">datadog</span> <span class="k">import</span> <span class="n">api</span>
+
+
+<div class="viewcode-block" id="DatadogSensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.datadog_sensor.DatadogSensor">[docs]</a><span class="k">class</span> <span class="nc">DatadogSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> A sensor to listen, with a filter, to datadog event streams and determine</span>
+<span class="sd"> if some event was emitted.</span>
+
+<span class="sd"> Depends on the datadog API, which has to be deployed on the same server where</span>
+<span class="sd"> Airflow runs.</span>
+
+<span class="sd"> :param datadog_conn_id: The connection to datadog, containing metadata for api keys.</span>
+<span class="sd"> :param datadog_conn_id: string</span>
+<span class="sd"> """</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#66c3dd'</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">datadog_conn_id</span><span class="o">=</span><span class="s1">'datadog_default'</span><span class="p">,</span>
+ <span class="n">from_seconds_ago</span><span class="o">=</span><span class="mi">3600</span><span class="p">,</span>
+ <span class="n">up_to_seconds_from_now</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span>
+ <span class="n">priority</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">sources</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">tags</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="n">response_check</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span>
+ <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">DatadogSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">datadog_conn_id</span> <span class="o">=</span> <span class="n">datadog_conn_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">from_seconds_ago</span> <span class="o">=</span> <span class="n">from_seconds_ago</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">up_to_seconds_from_now</span> <span class="o">=</span> <span class="n">up_to_seconds_from_now</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">priority</span> <span class="o">=</span> <span class="n">priority</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">sources</span> <span class="o">=</span> <span class="n">sources</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">tags</span> <span class="o">=</span> <span class="n">tags</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span> <span class="o">=</span> <span class="n">response_check</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="c1"># This instantiates the hook, but doesn't need it further,</span>
+ <span class="c1"># because the API authenticates globally (unfortunately),</span>
+ <span class="c1"># but for airflow this shouldn't matter too much, because each</span>
+ <span class="c1"># task instance runs in its own process anyway.</span>
+ <span class="n">DatadogHook</span><span class="p">(</span><span class="n">datadog_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">datadog_conn_id</span><span class="p">)</span>
+
+ <span class="n">response</span> <span class="o">=</span> <span class="n">api</span><span class="o">.</span><span class="n">Event</span><span class="o">.</span><span class="n">query</span><span class="p">(</span>
+ <span class="n">start</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">from_seconds_ago</span><span class="p">,</span>
+ <span class="n">end</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">up_to_seconds_from_now</span><span class="p">,</span>
+ <span class="n">priority</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">priority</span><span class="p">,</span>
+ <span class="n">sources</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">,</span>
+ <span class="n">tags</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">tags</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">response</span><span class="p">,</span> <span class="nb">dict</span><span class="p">)</span> <span class="ow">and</span> <span class="n">response</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'status'</span><span class="p">,</span> <span class="s1">'ok'</span><span class="p">)</span> <span class="o">!=</span> <span class="s1">'ok'</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"Unexpected Datadog result: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Datadog returned unexpected result"</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span><span class="p">:</span>
+ <span class="c1"># run content check on response</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">response_check</span><span class="p">(</span><span class="n">response</span><span class="p">)</span>
+
+ <span class="c1"># If no check was inserted, assume any event that matched yields true.</span>
+ <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="n">response</span><span class="p">)</span> <span class="o">></span> <span class="mi">0</span></div>
+</pre></div>
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+ <h1>Source code for airflow.contrib.sensors.emr_base_sensor</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed to the Apache Software Foundation (ASF) under one</span>
+<span class="c1"># or more contributor license agreements. See the NOTICE file</span>
+<span class="c1"># distributed with this work for additional information</span>
+<span class="c1"># regarding copyright ownership. The ASF licenses this file</span>
+<span class="c1"># to you under the Apache License, Version 2.0 (the</span>
+<span class="c1"># "License"); you may not use this file except in compliance</span>
+<span class="c1"># with the License. You may obtain a copy of the License at</span>
+<span class="c1"># </span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1"># </span>
+<span class="c1"># Unless required by applicable law or agreed to in writing,</span>
+<span class="c1"># software distributed under the License is distributed on an</span>
+<span class="c1"># "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span>
+<span class="c1"># KIND, either express or implied. See the License for the</span>
+<span class="c1"># specific language governing permissions and limitations</span>
+<span class="c1"># under the License.</span>
+<span class="kn">from</span> <span class="nn">airflow.sensors.base_sensor_operator</span> <span class="k">import</span> <span class="n">BaseSensorOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils</span> <span class="k">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span>
+
+
+<div class="viewcode-block" id="EmrBaseSensor"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.emr_base_sensor.EmrBaseSensor">[docs]</a><span class="k">class</span> <span class="nc">EmrBaseSensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Contains general sensor behavior for EMR.</span>
+<span class="sd"> Subclasses should implement get_emr_response() and state_from_response() methods.</span>
+<span class="sd"> Subclasses should also implement NON_TERMINAL_STATES and FAILED_STATE constants.</span>
+<span class="sd"> """</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#66c3ff'</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">aws_conn_id</span><span class="o">=</span><span class="s1">'aws_default'</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">EmrBaseSensor</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span> <span class="o">=</span> <span class="n">aws_conn_id</span>
+
+ <span class="k">def</span> <span class="nf">poke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="n">response</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_emr_response</span><span class="p">()</span>
+
+ <span class="k">if</span> <span class="ow">not</span> <span class="n">response</span><span class="p">[</span><span class="s1">'ResponseMetadata'</span><span class="p">][</span><span class="s1">'HTTPStatusCode'</span><span class="p">]</span> <span class="o">==</span> <span class="mi">200</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Bad HTTP response: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="n">response</span><span class="p">)</span>
+ <span class="k">return</span> <span class="kc">False</span>
+
+ <span class="n">state</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">state_from_response</span><span class="p">(</span><span class="n">response</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Job flow currently </span><span class="si">%s</span><span class="s1">'</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="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">NON_TERMINAL_STATES</span><span class="p">:</span>
+ <span class="k">return</span> <span class="kc">False</span>
+
+ <span class="k">if</span> <span class="n">state</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">FAILED_STATE</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'EMR job failed'</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="kc">True</span></div>
+</pre></div>
+
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