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| <h1>Source code for airflow.contrib.hooks.segment_hook</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="c1">#</span> |
| <span class="sd">"""</span> |
| <span class="sd">This module contains a Segment Hook</span> |
| <span class="sd">which allows you to connect to your Segment account,</span> |
| <span class="sd">retrieve data from it or write to that file.</span> |
| |
| <span class="sd">NOTE: this hook also relies on the Segment analytics package:</span> |
| <span class="sd"> https://github.com/segmentio/analytics-python</span> |
| <span class="sd">"""</span> |
| <span class="kn">import</span> <span class="nn">analytics</span> |
| <span class="kn">from</span> <span class="nn">airflow.hooks.base_hook</span> <span class="kn">import</span> <span class="n">BaseHook</span> |
| <span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span> |
| |
| |
| <div class="viewcode-block" id="SegmentHook"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/segment_hook/index.html#airflow.contrib.hooks.segment_hook.SegmentHook">[docs]</a><span class="k">class</span> <span class="nc">SegmentHook</span><span class="p">(</span><span class="n">BaseHook</span><span class="p">):</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">segment_conn_id</span><span class="o">=</span><span class="s1">'segment_default'</span><span class="p">,</span> |
| <span class="n">segment_debug_mode</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="sd">"""</span> |
| <span class="sd"> Create new connection to Segment</span> |
| <span class="sd"> and allows you to pull data out of Segment or write to it.</span> |
| |
| <span class="sd"> You can then use that file with other</span> |
| <span class="sd"> Airflow operators to move the data around or interact with segment.</span> |
| |
| <span class="sd"> :param segment_conn_id: the name of the connection that has the parameters</span> |
| <span class="sd"> we need to connect to Segment.</span> |
| <span class="sd"> The connection should be type `json` and include a</span> |
| <span class="sd"> write_key security token in the `Extras` field.</span> |
| <span class="sd"> :type segment_conn_id: str</span> |
| <span class="sd"> :param segment_debug_mode: Determines whether Segment should run in debug mode.</span> |
| <span class="sd"> Defaults to False</span> |
| <span class="sd"> :type segment_debug_mode: bool</span> |
| <span class="sd"> .. note::</span> |
| <span class="sd"> You must include a JSON structure in the `Extras` field.</span> |
| <span class="sd"> We need a user's security token to connect to Segment.</span> |
| <span class="sd"> So we define it in the `Extras` field as:</span> |
| <span class="sd"> `{"write_key":"YOUR_SECURITY_TOKEN"}`</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">segment_conn_id</span> <span class="o">=</span> <span class="n">segment_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">segment_debug_mode</span> <span class="o">=</span> <span class="n">segment_debug_mode</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_args</span> <span class="o">=</span> <span class="n">args</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_kwargs</span> <span class="o">=</span> <span class="n">kwargs</span> |
| |
| <span class="c1"># get the connection parameters</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">connection</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">segment_conn_id</span><span class="p">)</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">extras</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">connection</span><span class="o">.</span><span class="n">extra_dejson</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">write_key</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">extras</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'write_key'</span><span class="p">)</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">write_key</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'No Segment write key provided'</span><span class="p">)</span> |
| |
| <div class="viewcode-block" id="SegmentHook.get_conn"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/segment_hook/index.html#airflow.contrib.hooks.segment_hook.SegmentHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</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">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Setting write key for Segment analytics connection'</span><span class="p">)</span> |
| <span class="n">analytics</span><span class="o">.</span><span class="n">debug</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">segment_debug_mode</span> |
| <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">segment_debug_mode</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">'Setting Segment analytics connection to debug mode'</span><span class="p">)</span> |
| <span class="n">analytics</span><span class="o">.</span><span class="n">on_error</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">on_error</span> |
| <span class="n">analytics</span><span class="o">.</span><span class="n">write_key</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">write_key</span> |
| <span class="k">return</span> <span class="n">analytics</span></div> |
| |
| <div class="viewcode-block" id="SegmentHook.on_error"><a class="viewcode-back" href="../../../../_api/airflow/contrib/hooks/segment_hook/index.html#airflow.contrib.hooks.segment_hook.SegmentHook.on_error">[docs]</a> <span class="k">def</span> <span class="nf">on_error</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">error</span><span class="p">,</span> <span class="n">items</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Handles error callbacks when using Segment with segment_debug_mode set to True</span> |
| <span class="sd"> """</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s1">'Encountered Segment error: </span><span class="si">{segment_error}</span><span class="s1"> with '</span> |
| <span class="s1">'items: </span><span class="si">{with_items}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">segment_error</span><span class="o">=</span><span class="n">error</span><span class="p">,</span> |
| <span class="n">with_items</span><span class="o">=</span><span class="n">items</span><span class="p">))</span> |
| <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s1">'Segment error: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">error</span><span class="p">))</span></div></div> |
| </pre></div> |
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