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| <div class="section" id="module-airflow.contrib.operators.mysql_to_gcs"> |
| <span id="airflow-contrib-operators-mysql-to-gcs"></span><h1><a class="reference internal" href="#module-airflow.contrib.operators.mysql_to_gcs" title="airflow.contrib.operators.mysql_to_gcs"><code class="xref py py-mod docutils literal notranslate"><span class="pre">airflow.contrib.operators.mysql_to_gcs</span></code></a><a class="headerlink" href="#module-airflow.contrib.operators.mysql_to_gcs" title="Permalink to this headline">¶</a></h1> |
| <div class="section" id="module-contents"> |
| <h2>Module Contents<a class="headerlink" href="#module-contents" title="Permalink to this headline">¶</a></h2> |
| <dl class="data"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.PY3"> |
| <code class="descclassname">airflow.contrib.operators.mysql_to_gcs.</code><code class="descname">PY3</code><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#PY3"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.PY3" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="class"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator"> |
| <em class="property">class </em><code class="descclassname">airflow.contrib.operators.mysql_to_gcs.</code><code class="descname">MySqlToGoogleCloudStorageOperator</code><span class="sig-paren">(</span><em>sql</em>, <em>bucket</em>, <em>filename</em>, <em>schema_filename=None</em>, <em>approx_max_file_size_bytes=1900000000</em>, <em>mysql_conn_id='mysql_default'</em>, <em>google_cloud_storage_conn_id='google_cloud_default'</em>, <em>schema=None</em>, <em>delegate_to=None</em>, <em>export_format='json'</em>, <em>field_delimiter='</em>, <em>'</em>, <em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Bases:<a class="reference internal" href="../../../models/index.html#airflow.models.BaseOperator" title="airflow.models.BaseOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.models.BaseOperator</span></code></a></p> |
| <p>Copy data from MySQL to Google cloud storage in JSON or CSV format.</p> |
| <p>The JSON data files generated are newline-delimited to enable them to be |
| loaded into BigQuery. |
| Reference: <a class="reference external" href="https://cloud.google.com/bigquery/docs/">https://cloud.google.com/bigquery/docs/</a> |
| loading-data-cloud-storage-json#limitations</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters</dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>sql</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The SQL to execute on the MySQL table.</p></li> |
| <li><p><strong>bucket</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The bucket to upload to.</p></li> |
| <li><p><strong>filename</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The filename to use as the object name when uploading |
| to Google cloud storage. A {} should be specified in the filename |
| to allow the operator to inject file numbers in cases where the |
| file is split due to size.</p></li> |
| <li><p><strong>schema_filename</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – If set, the filename to use as the object name |
| when uploading a .json file containing the BigQuery schema fields |
| for the table that was dumped from MySQL.</p></li> |
| <li><p><strong>approx_max_file_size_bytes</strong> (<em>long</em>) – This operator supports the ability |
| to split large table dumps into multiple files (see notes in the |
| filenamed param docs above). Google cloud storage allows for files |
| to be a maximum of 4GB. This param allows developers to specify the |
| file size of the splits.</p></li> |
| <li><p><strong>mysql_conn_id</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Reference to a specific MySQL hook.</p></li> |
| <li><p><strong>google_cloud_storage_conn_id</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Reference to a specific Google |
| cloud storage hook.</p></li> |
| <li><p><strong>schema</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a><em> or </em><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#list" title="(in Python v3.7)"><em>list</em></a>) – The schema to use, if any. Should be a list of dict or |
| a str. Pass a string if using Jinja template, otherwise, pass a list of |
| dict. Examples could be seen: <a class="reference external" href="https://cloud.google.com/bigquery/docs">https://cloud.google.com/bigquery/docs</a> |
| /schemas#specifying_a_json_schema_file</p></li> |
| <li><p><strong>delegate_to</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The account to impersonate, if any. For this to |
| work, the service account making the request must have domain-wide |
| delegation enabled.</p></li> |
| <li><p><strong>export_format</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – Desired format of files to be exported.</p></li> |
| <li><p><strong>field_delimiter</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#str" title="(in Python v3.7)"><em>str</em></a>) – The delimiter to be used for CSV files.</p></li> |
| </ul> |
| </dd> |
| </dl> |
| <dl class="attribute"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.template_fields"> |
| <code class="descname">template_fields</code><em class="property"> = ['sql', 'bucket', 'filename', 'schema_filename', 'schema']</em><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator.template_fields"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.template_fields" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.template_ext"> |
| <code class="descname">template_ext</code><em class="property"> = ['.sql']</em><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator.template_ext"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.template_ext" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.ui_color"> |
| <code class="descname">ui_color</code><em class="property"> = #a0e08c</em><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator.ui_color"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.ui_color" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.execute"> |
| <code class="descname">execute</code><span class="sig-paren">(</span><em>self</em>, <em>context</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator.execute"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.execute" title="Permalink to this definition">¶</a></dt> |
| <dd></dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._query_mysql"> |
| <code class="descname">_query_mysql</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._query_mysql"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._query_mysql" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Queries mysql and returns a cursor to the results.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._write_local_data_files"> |
| <code class="descname">_write_local_data_files</code><span class="sig-paren">(</span><em>self</em>, <em>cursor</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._write_local_data_files"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._write_local_data_files" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Takes a cursor, and writes results to a local file.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p>A dictionary where keys are filenames to be used as object |
| names in GCS, and values are file handles to local files that |
| contain the data for the GCS objects.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._configure_csv_file"> |
| <code class="descname">_configure_csv_file</code><span class="sig-paren">(</span><em>self</em>, <em>file_handle</em>, <em>schema</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._configure_csv_file"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._configure_csv_file" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Configure a csv writer with the file_handle and write schema |
| as headers for the new file.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._write_local_schema_file"> |
| <code class="descname">_write_local_schema_file</code><span class="sig-paren">(</span><em>self</em>, <em>cursor</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._write_local_schema_file"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._write_local_schema_file" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Takes a cursor, and writes the BigQuery schema in .json format for the |
| results to a local file system.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns</dt> |
| <dd class="field-odd"><p>A dictionary where key is a filename to be used as an object |
| name in GCS, and values are file handles to local files that |
| contains the BigQuery schema fields in .json format.</p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._upload_to_gcs"> |
| <code class="descname">_upload_to_gcs</code><span class="sig-paren">(</span><em>self</em>, <em>files_to_upload</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._upload_to_gcs"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._upload_to_gcs" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Upload all of the file splits (and optionally the schema .json file) to |
| Google cloud storage.</p> |
| </dd></dl> |
| |
| <dl class="staticmethod"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._convert_types"> |
| <em class="property">static </em><code class="descname">_convert_types</code><span class="sig-paren">(</span><em>schema</em>, <em>col_type_dict</em>, <em>row</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._convert_types"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._convert_types" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Takes a value from MySQLdb, and converts it to a value that’s safe for |
| JSON/Google cloud storage/BigQuery. Dates are converted to UTC seconds. |
| Decimals are converted to floats. Binary type fields are encoded with base64, |
| as imported BYTES data must be base64-encoded according to Bigquery SQL |
| date type documentation: <a class="reference external" href="https://cloud.google.com/bigquery/data-types">https://cloud.google.com/bigquery/data-types</a></p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._get_col_type_dict"> |
| <code class="descname">_get_col_type_dict</code><span class="sig-paren">(</span><em>self</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator._get_col_type_dict"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator._get_col_type_dict" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Return a dict of column name and column type based on self.schema if not None.</p> |
| </dd></dl> |
| |
| <dl class="classmethod"> |
| <dt id="airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.type_map"> |
| <em class="property">classmethod </em><code class="descname">type_map</code><span class="sig-paren">(</span><em>cls</em>, <em>mysql_type</em><span class="sig-paren">)</span><a class="reference internal" href="../../../../../_modules/airflow/contrib/operators/mysql_to_gcs.html#MySqlToGoogleCloudStorageOperator.type_map"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#airflow.contrib.operators.mysql_to_gcs.MySqlToGoogleCloudStorageOperator.type_map" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Helper function that maps from MySQL fields to BigQuery fields. Used |
| when a schema_filename is set.</p> |
| </dd></dl> |
| |
| </dd></dl> |
| |
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