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<h1>Source code for airflow.contrib.operators.mysql_to_gcs</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"># &quot;License&quot;); 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"># &quot;AS IS&quot; 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="sd">&quot;&quot;&quot;</span>
<span class="sd">MySQL to GCS operator.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">base64</span>
<span class="kn">import</span> <span class="nn">calendar</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">from</span> <span class="nn">datetime</span> <span class="k">import</span> <span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="p">,</span> <span class="n">timedelta</span>
<span class="kn">from</span> <span class="nn">decimal</span> <span class="k">import</span> <span class="n">Decimal</span>
<span class="kn">from</span> <span class="nn">MySQLdb.constants</span> <span class="k">import</span> <span class="n">FIELD_TYPE</span>
<span class="kn">from</span> <span class="nn">airflow.hooks.mysql_hook</span> <span class="k">import</span> <span class="n">MySqlHook</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.contrib.operators.sql_to_gcs</span> <span class="k">import</span> <span class="n">BaseSQLToGoogleCloudStorageOperator</span>
<div class="viewcode-block" id="PY3"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.PY3">[docs]</a><span class="n">PY3</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">version_info</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="mi">3</span></div>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator">[docs]</a><span class="k">class</span> <span class="nc">MySqlToGoogleCloudStorageOperator</span><span class="p">(</span><span class="n">BaseSQLToGoogleCloudStorageOperator</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Copy data from MySQL to Google cloud storage in JSON or CSV format.</span>
<span class="sd"> :param mysql_conn_id: Reference to a specific MySQL hook.</span>
<span class="sd"> :type mysql_conn_id: str</span>
<span class="sd"> :param ensure_utc: Ensure TIMESTAMP columns exported as UTC. If set to</span>
<span class="sd"> `False`, TIMESTAMP columns will be exported using the MySQL server&#39;s</span>
<span class="sd"> default timezone.</span>
<span class="sd"> :type ensure_utc: bool</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator.ui_color"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">&#39;#a0e08c&#39;</span></div>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator.type_map"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.type_map">[docs]</a> <span class="n">type_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">BIT</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">NEWDECIMAL</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">:</span> <span class="s1">&#39;FLOAT&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">INT24</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">LONG</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">LONGLONG</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">SHORT</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">TIME</span><span class="p">:</span> <span class="s1">&#39;TIME&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">TINY</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="n">FIELD_TYPE</span><span class="o">.</span><span class="n">YEAR</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span></div>
<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">mysql_conn_id</span><span class="o">=</span><span class="s1">&#39;mysql_default&#39;</span><span class="p">,</span>
<span class="n">ensure_utc</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">MySqlToGoogleCloudStorageOperator</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">mysql_conn_id</span> <span class="o">=</span> <span class="n">mysql_conn_id</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ensure_utc</span> <span class="o">=</span> <span class="n">ensure_utc</span>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator.query"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.query">[docs]</a> <span class="k">def</span> <span class="nf">query</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Queries mysql and returns a cursor to the results.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">mysql</span> <span class="o">=</span> <span class="n">MySqlHook</span><span class="p">(</span><span class="n">mysql_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mysql_conn_id</span><span class="p">)</span>
<span class="n">conn</span> <span class="o">=</span> <span class="n">mysql</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
<span class="n">cursor</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">ensure_utc</span><span class="p">:</span>
<span class="c1"># Ensure TIMESTAMP results are in UTC</span>
<span class="n">tz_query</span> <span class="o">=</span> <span class="s2">&quot;SET time_zone = &#39;+00:00&#39;&quot;</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">&#39;Executing: </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span> <span class="n">tz_query</span><span class="p">)</span>
<span class="n">cursor</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">tz_query</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">&#39;Executing: </span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">sql</span><span class="p">)</span>
<span class="n">cursor</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sql</span><span class="p">)</span>
<span class="k">return</span> <span class="n">cursor</span></div>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator.field_to_bigquery"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.field_to_bigquery">[docs]</a> <span class="k">def</span> <span class="nf">field_to_bigquery</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">field</span><span class="p">):</span>
<span class="n">field_type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">type_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">field</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s2">&quot;STRING&quot;</span><span class="p">)</span>
<span class="c1"># Always allow TIMESTAMP to be nullable. MySQLdb returns None types</span>
<span class="c1"># for required fields because some MySQL timestamps can&#39;t be</span>
<span class="c1"># represented by Python&#39;s datetime (e.g. 0000-00-00 00:00:00).</span>
<span class="n">field_mode</span> <span class="o">=</span> <span class="s2">&quot;NULLABLE&quot;</span> <span class="k">if</span> <span class="n">field</span><span class="p">[</span><span class="mi">6</span><span class="p">]</span> <span class="ow">or</span> <span class="n">field_type</span> <span class="o">==</span> <span class="s2">&quot;TIMESTAMP&quot;</span> <span class="k">else</span> <span class="s2">&quot;REQUIRED&quot;</span>
<span class="k">return</span> <span class="p">{</span>
<span class="s1">&#39;name&#39;</span><span class="p">:</span> <span class="n">field</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span>
<span class="s1">&#39;type&#39;</span><span class="p">:</span> <span class="n">field_type</span><span class="p">,</span>
<span class="s1">&#39;mode&#39;</span><span class="p">:</span> <span class="n">field_mode</span><span class="p">,</span></div>
<span class="p">}</span>
<div class="viewcode-block" id="MySqlToGoogleCloudStorageOperator.convert_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mysql_to_gcs/index.html#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.convert_type">[docs]</a> <span class="k">def</span> <span class="nf">convert_type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">schema_type</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Takes a value from MySQLdb, and converts it to a value that&#39;s safe for</span>
<span class="sd"> JSON/Google cloud storage/BigQuery. Dates are converted to UTC seconds.</span>
<span class="sd"> Decimals are converted to floats. Binary type fields are encoded with base64,</span>
<span class="sd"> as imported BYTES data must be base64-encoded according to Bigquery SQL</span>
<span class="sd"> date type documentation: https://cloud.google.com/bigquery/data-types</span>
<span class="sd"> :param value: MySQLdb column value</span>
<span class="sd"> :type value: Any</span>
<span class="sd"> :param schema_type: BigQuery data type</span>
<span class="sd"> :type schema_type: str</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="p">(</span><span class="n">datetime</span><span class="p">,</span> <span class="n">date</span><span class="p">)):</span>
<span class="k">return</span> <span class="n">calendar</span><span class="o">.</span><span class="n">timegm</span><span class="p">(</span><span class="n">value</span><span class="o">.</span><span class="n">timetuple</span><span class="p">())</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">timedelta</span><span class="p">):</span>
<span class="k">return</span> <span class="n">value</span><span class="o">.</span><span class="n">total_seconds</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">Decimal</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">float</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">if</span> <span class="n">schema_type</span> <span class="o">==</span> <span class="s2">&quot;BYTES&quot;</span><span class="p">:</span>
<span class="n">col_val</span> <span class="o">=</span> <span class="n">base64</span><span class="o">.</span><span class="n">standard_b64encode</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">if</span> <span class="n">PY3</span><span class="p">:</span>
<span class="n">col_val</span> <span class="o">=</span> <span class="n">col_val</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">&#39;ascii&#39;</span><span class="p">)</span>
<span class="k">return</span> <span class="n">col_val</span>
<span class="k">return</span> <span class="n">value</span></div></div>
</pre></div>
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