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| <h1>Source code for airflow.sensors.s3_key_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">urllib.parse</span> <span class="k">import</span> <span class="n">urlparse</span> |
| |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="k">import</span> <span class="n">AirflowException</span> |
| <span class="kn">from</span> <span class="nn">airflow.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="S3KeySensor"><a class="viewcode-back" href="../../../_api/airflow/sensors/s3_key_sensor/index.html#airflow.sensors.s3_key_sensor.S3KeySensor">[docs]</a><span class="k">class</span> <span class="nc">S3KeySensor</span><span class="p">(</span><span class="n">BaseSensorOperator</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Waits for a key (a file-like instance on S3) to be present in a S3 bucket.</span> |
| <span class="sd"> S3 being a key/value it does not support folders. The path is just a key</span> |
| <span class="sd"> a resource.</span> |
| |
| <span class="sd"> :param bucket_key: The key being waited on. Supports full s3:// style url</span> |
| <span class="sd"> or relative path from root level.</span> |
| <span class="sd"> :type bucket_key: str</span> |
| <span class="sd"> :param bucket_name: Name of the S3 bucket</span> |
| <span class="sd"> :type bucket_name: str</span> |
| <span class="sd"> :param wildcard_match: whether the bucket_key should be interpreted as a</span> |
| <span class="sd"> Unix wildcard pattern</span> |
| <span class="sd"> :type wildcard_match: bool</span> |
| <span class="sd"> :param aws_conn_id: a reference to the s3 connection</span> |
| <span class="sd"> :type aws_conn_id: str</span> |
| <span class="sd"> :param verify: Whether or not to verify SSL certificates for S3 connection.</span> |
| <span class="sd"> By default SSL certificates are verified.</span> |
| <span class="sd"> You can provide the following values:</span> |
| |
| <span class="sd"> - ``False``: do not validate SSL certificates. SSL will still be used</span> |
| <span class="sd"> (unless use_ssl is False), but SSL certificates will not be</span> |
| <span class="sd"> verified.</span> |
| <span class="sd"> - ``path/to/cert/bundle.pem``: A filename of the CA cert bundle to uses.</span> |
| <span class="sd"> You can specify this argument if you want to use a different</span> |
| <span class="sd"> CA cert bundle than the one used by botocore.</span> |
| <span class="sd"> :type verify: bool or str</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="S3KeySensor.template_fields"><a class="viewcode-back" href="../../../_api/airflow/sensors/s3_key_sensor/index.html#airflow.sensors.s3_key_sensor.S3KeySensor.template_fields">[docs]</a> <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'bucket_key'</span><span class="p">,</span> <span class="s1">'bucket_name'</span><span class="p">)</span></div> |
| |
| <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">bucket_key</span><span class="p">,</span> |
| <span class="n">bucket_name</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">wildcard_match</span><span class="o">=</span><span class="kc">False</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="n">verify</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">S3KeySensor</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="c1"># Parse</span> |
| <span class="k">if</span> <span class="n">bucket_name</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="n">parsed_url</span> <span class="o">=</span> <span class="n">urlparse</span><span class="p">(</span><span class="n">bucket_key</span><span class="p">)</span> |
| <span class="k">if</span> <span class="n">parsed_url</span><span class="o">.</span><span class="n">netloc</span> <span class="o">==</span> <span class="s1">''</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'Please provide a bucket_name'</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">bucket_name</span> <span class="o">=</span> <span class="n">parsed_url</span><span class="o">.</span><span class="n">netloc</span> |
| <span class="k">if</span> <span class="n">parsed_url</span><span class="o">.</span><span class="n">path</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'/'</span><span class="p">:</span> |
| <span class="n">bucket_key</span> <span class="o">=</span> <span class="n">parsed_url</span><span class="o">.</span><span class="n">path</span><span class="p">[</span><span class="mi">1</span><span class="p">:]</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="n">bucket_key</span> <span class="o">=</span> <span class="n">parsed_url</span><span class="o">.</span><span class="n">path</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">bucket_name</span> <span class="o">=</span> <span class="n">bucket_name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">bucket_key</span> <span class="o">=</span> <span class="n">bucket_key</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">wildcard_match</span> <span class="o">=</span> <span class="n">wildcard_match</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">aws_conn_id</span> <span class="o">=</span> <span class="n">aws_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">verify</span> <span class="o">=</span> <span class="n">verify</span> |
| |
| <div class="viewcode-block" id="S3KeySensor.poke"><a class="viewcode-back" href="../../../_api/airflow/sensors/s3_key_sensor/index.html#airflow.sensors.s3_key_sensor.S3KeySensor.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="kn">from</span> <span class="nn">airflow.hooks.S3_hook</span> <span class="k">import</span> <span class="n">S3Hook</span> |
| <span class="n">hook</span> <span class="o">=</span> <span class="n">S3Hook</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="n">verify</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">verify</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 key : s3://</span><span class="si">%s</span><span class="s1">/</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">bucket_name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">bucket_key</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">wildcard_match</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">hook</span><span class="o">.</span><span class="n">check_for_wildcard_key</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket_key</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">bucket_name</span><span class="p">)</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="k">return</span> <span class="n">hook</span><span class="o">.</span><span class="n">check_for_key</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">bucket_key</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">bucket_name</span><span class="p">)</span></div></div> |
| </pre></div> |
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