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<h1>Source code for airflow.contrib.operators.mssql_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">MsSQL to GCS operator.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">decimal</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.hooks.mssql_hook</span> <span class="k">import</span> <span class="n">MsSqlHook</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="MsSqlToGoogleCloudStorageOperator"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator">[docs]</a><span class="k">class</span> <span class="nc">MsSqlToGoogleCloudStorageOperator</span><span class="p">(</span><span class="n">BaseSQLToGoogleCloudStorageOperator</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Copy data from Microsoft SQL Server to Google Cloud Storage</span>
<span class="sd"> in JSON or CSV format.</span>
<span class="sd"> :param mssql_conn_id: Reference to a specific MSSQL hook.</span>
<span class="sd"> :type mssql_conn_id: str</span>
<span class="sd"> **Example**:</span>
<span class="sd"> The following operator will export data from the Customers table</span>
<span class="sd"> within the given MSSQL Database and then upload it to the</span>
<span class="sd"> &#39;mssql-export&#39; GCS bucket (along with a schema file). ::</span>
<span class="sd"> export_customers = MsSqlToGoogleCloudStorageOperator(</span>
<span class="sd"> task_id=&#39;export_customers&#39;,</span>
<span class="sd"> sql=&#39;SELECT * FROM dbo.Customers;&#39;,</span>
<span class="sd"> bucket=&#39;mssql-export&#39;,</span>
<span class="sd"> filename=&#39;data/customers/export.json&#39;,</span>
<span class="sd"> schema_filename=&#39;schemas/export.json&#39;,</span>
<span class="sd"> mssql_conn_id=&#39;mssql_default&#39;,</span>
<span class="sd"> google_cloud_storage_conn_id=&#39;google_cloud_default&#39;,</span>
<span class="sd"> dag=dag</span>
<span class="sd"> )</span>
<span class="sd"> &quot;&quot;&quot;</span>
<div class="viewcode-block" id="MsSqlToGoogleCloudStorageOperator.ui_color"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">&#39;#e0a98c&#39;</span></div>
<div class="viewcode-block" id="MsSqlToGoogleCloudStorageOperator.type_map"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator.type_map">[docs]</a> <span class="n">type_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="mi">3</span><span class="p">:</span> <span class="s1">&#39;INTEGER&#39;</span><span class="p">,</span>
<span class="mi">4</span><span class="p">:</span> <span class="s1">&#39;TIMESTAMP&#39;</span><span class="p">,</span>
<span class="mi">5</span><span class="p">:</span> <span class="s1">&#39;NUMERIC&#39;</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">mssql_conn_id</span><span class="o">=</span><span class="s1">&#39;mssql_default&#39;</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">MsSqlToGoogleCloudStorageOperator</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">mssql_conn_id</span> <span class="o">=</span> <span class="n">mssql_conn_id</span>
<div class="viewcode-block" id="MsSqlToGoogleCloudStorageOperator.query"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator.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 MSSQL and returns a cursor of results.</span>
<span class="sd"> :return: mssql cursor</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">mssql</span> <span class="o">=</span> <span class="n">MsSqlHook</span><span class="p">(</span><span class="n">mssql_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">mssql_conn_id</span><span class="p">)</span>
<span class="n">conn</span> <span class="o">=</span> <span class="n">mssql</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="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="MsSqlToGoogleCloudStorageOperator.field_to_bigquery"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator.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="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="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">&quot; &quot;</span><span class="p">,</span> <span class="s2">&quot;_&quot;</span><span class="p">),</span>
<span class="s1">&#39;type&#39;</span><span class="p">:</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="s1">&#39;mode&#39;</span><span class="p">:</span> <span class="s2">&quot;NULLABLE&quot;</span><span class="p">,</span></div>
<span class="p">}</span>
<span class="nd">@classmethod</span>
<div class="viewcode-block" id="MsSqlToGoogleCloudStorageOperator.convert_type"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/mssql_to_gcs/index.html#airflow.contrib.operators.mssql_to_gcs.MsSqlToGoogleCloudStorageOperator.convert_type">[docs]</a> <span class="k">def</span> <span class="nf">convert_type</span><span class="p">(</span><span class="bp">cls</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 MSSQL, and converts it to a value that&#39;s safe for</span>
<span class="sd"> JSON/Google Cloud Storage/BigQuery.</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="n">decimal</span><span class="o">.</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">return</span> <span class="n">value</span></div></div>
</pre></div>
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