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| <h1>Source code for airflow.contrib.sensors.hdfs_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.hdfs_sensor</span> <span class="k">import</span> <span class="n">HdfsSensor</span> |
| |
| |
| <div class="viewcode-block" id="HdfsSensorRegex"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.hdfs_sensor.HdfsSensorRegex">[docs]</a><span class="k">class</span> <span class="nc">HdfsSensorRegex</span><span class="p">(</span><span class="n">HdfsSensor</span><span class="p">):</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">regex</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">HdfsSensorRegex</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">regex</span> <span class="o">=</span> <span class="n">regex</span> |
| |
| <div class="viewcode-block" id="HdfsSensorRegex.poke"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.hdfs_sensor.HdfsSensorRegex.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"> poke matching files in a directory with self.regex</span> |
| |
| <span class="sd"> :return: Bool depending on the search criteria</span> |
| <span class="sd"> """</span> |
| <span class="n">sb</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hdfs_conn_id</span><span class="p">)</span><span class="o">.</span><span class="n">get_conn</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 </span><span class="si">{self.filepath}</span><span class="s1"> to be a directory '</span> |
| <span class="s1">'with files matching </span><span class="si">{self.regex.pattern}</span><span class="s1">'</span><span class="o">.</span> |
| <span class="nb">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">())</span> |
| <span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="p">[</span><span class="n">f</span> <span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">sb</span><span class="o">.</span><span class="n">ls</span><span class="p">([</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">],</span> <span class="n">include_toplevel</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">if</span> |
| <span class="n">f</span><span class="p">[</span><span class="s1">'file_type'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'f'</span> <span class="ow">and</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">f</span><span class="p">[</span><span class="s1">'path'</span><span class="p">]</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'</span><span class="si">%s</span><span class="s1">/'</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">,</span> <span class="s1">''</span><span class="p">))]</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter_for_ignored_ext</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">ignored_ext</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">ignore_copying</span><span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter_for_filesize</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">file_size</span><span class="p">)</span> |
| <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">result</span><span class="p">)</span></div></div> |
| |
| |
| <div class="viewcode-block" id="HdfsSensorFolder"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.hdfs_sensor.HdfsSensorFolder">[docs]</a><span class="k">class</span> <span class="nc">HdfsSensorFolder</span><span class="p">(</span><span class="n">HdfsSensor</span><span class="p">):</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">be_empty</span><span class="o">=</span><span class="kc">False</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">HdfsSensorFolder</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">be_empty</span> <span class="o">=</span> <span class="n">be_empty</span> |
| |
| <div class="viewcode-block" id="HdfsSensorFolder.poke"><a class="viewcode-back" href="../../../../code.html#airflow.contrib.sensors.hdfs_sensor.HdfsSensorFolder.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"> poke for a non empty directory</span> |
| |
| <span class="sd"> :return: Bool depending on the search criteria</span> |
| <span class="sd"> """</span> |
| <span class="n">sb</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">hook</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hdfs_conn_id</span><span class="p">)</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="p">[</span><span class="n">f</span> <span class="k">for</span> <span class="n">f</span> <span class="ow">in</span> <span class="n">sb</span><span class="o">.</span><span class="n">ls</span><span class="p">([</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">],</span> <span class="n">include_toplevel</span><span class="o">=</span><span class="kc">True</span><span class="p">)]</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter_for_ignored_ext</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">ignored_ext</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">ignore_copying</span><span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter_for_filesize</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">file_size</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">be_empty</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 filepath </span><span class="si">{self.filepath}</span><span class="s1"> to a empty directory'</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="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="n">result</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">result</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="s1">'path'</span><span class="p">]</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">filepath</span> |
| <span class="k">else</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Poking for filepath </span><span class="si">{self.filepath}</span><span class="s1"> to a non empty directory'</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">result</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> |
| <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">result</span><span class="p">)</span> <span class="ow">and</span> <span class="n">result</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="s1">'file_type'</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'f'</span></div></div> |
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