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| <h1>Source code for airflow.contrib.operators.bigquery_to_bigquery</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.contrib.hooks.bigquery_hook</span> <span class="k">import</span> <span class="n">BigQueryHook</span> |
| <span class="kn">from</span> <span class="nn">airflow.models</span> <span class="k">import</span> <span class="n">BaseOperator</span> |
| <span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="k">import</span> <span class="n">apply_defaults</span> |
| |
| |
| <div class="viewcode-block" id="BigQueryToBigQueryOperator"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/bigquery_to_bigquery/index.html#airflow.contrib.operators.bigquery_to_bigquery.BigQueryToBigQueryOperator">[docs]</a><span class="k">class</span> <span class="nc">BigQueryToBigQueryOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span> |
| <span class="sd">"""</span> |
| <span class="sd"> Copies data from one BigQuery table to another.</span> |
| |
| <span class="sd"> .. seealso::</span> |
| <span class="sd"> For more details about these parameters:</span> |
| <span class="sd"> https://cloud.google.com/bigquery/docs/reference/v2/jobs#configuration.copy</span> |
| |
| <span class="sd"> :param source_project_dataset_tables: One or more</span> |
| <span class="sd"> dotted ``(project:|project.)<dataset>.<table>`` BigQuery tables to use as the</span> |
| <span class="sd"> source data. If ``<project>`` is not included, project will be the</span> |
| <span class="sd"> project defined in the connection json. Use a list if there are multiple</span> |
| <span class="sd"> source tables. (templated)</span> |
| <span class="sd"> :type source_project_dataset_tables: list|string</span> |
| <span class="sd"> :param destination_project_dataset_table: The destination BigQuery</span> |
| <span class="sd"> table. Format is: ``(project:|project.)<dataset>.<table>`` (templated)</span> |
| <span class="sd"> :type destination_project_dataset_table: str</span> |
| <span class="sd"> :param write_disposition: The write disposition if the table already exists.</span> |
| <span class="sd"> :type write_disposition: str</span> |
| <span class="sd"> :param create_disposition: The create disposition if the table doesn't exist.</span> |
| <span class="sd"> :type create_disposition: str</span> |
| <span class="sd"> :param bigquery_conn_id: reference to a specific BigQuery hook.</span> |
| <span class="sd"> :type bigquery_conn_id: str</span> |
| <span class="sd"> :param delegate_to: The account to impersonate, if any.</span> |
| <span class="sd"> For this to work, the service account making the request must have domain-wide</span> |
| <span class="sd"> delegation enabled.</span> |
| <span class="sd"> :type delegate_to: str</span> |
| <span class="sd"> :param labels: a dictionary containing labels for the job/query,</span> |
| <span class="sd"> passed to BigQuery</span> |
| <span class="sd"> :type labels: dict</span> |
| <span class="sd"> :param encryption_configuration: [Optional] Custom encryption configuration (e.g., Cloud KMS keys).</span> |
| <span class="sd"> **Example**: ::</span> |
| |
| <span class="sd"> encryption_configuration = {</span> |
| <span class="sd"> "kmsKeyName": "projects/testp/locations/us/keyRings/test-kr/cryptoKeys/test-key"</span> |
| <span class="sd"> }</span> |
| <span class="sd"> :type encryption_configuration: dict</span> |
| <span class="sd"> """</span> |
| <div class="viewcode-block" id="BigQueryToBigQueryOperator.template_fields"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/bigquery_to_bigquery/index.html#airflow.contrib.operators.bigquery_to_bigquery.BigQueryToBigQueryOperator.template_fields">[docs]</a> <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'source_project_dataset_tables'</span><span class="p">,</span> |
| <span class="s1">'destination_project_dataset_table'</span><span class="p">,</span> <span class="s1">'labels'</span><span class="p">)</span></div> |
| <div class="viewcode-block" id="BigQueryToBigQueryOperator.template_ext"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/bigquery_to_bigquery/index.html#airflow.contrib.operators.bigquery_to_bigquery.BigQueryToBigQueryOperator.template_ext">[docs]</a> <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,)</span></div> |
| <div class="viewcode-block" id="BigQueryToBigQueryOperator.ui_color"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/bigquery_to_bigquery/index.html#airflow.contrib.operators.bigquery_to_bigquery.BigQueryToBigQueryOperator.ui_color">[docs]</a> <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#e6f0e4'</span></div> |
| |
| <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">source_project_dataset_tables</span><span class="p">,</span> |
| <span class="n">destination_project_dataset_table</span><span class="p">,</span> |
| <span class="n">write_disposition</span><span class="o">=</span><span class="s1">'WRITE_EMPTY'</span><span class="p">,</span> |
| <span class="n">create_disposition</span><span class="o">=</span><span class="s1">'CREATE_IF_NEEDED'</span><span class="p">,</span> |
| <span class="n">bigquery_conn_id</span><span class="o">=</span><span class="s1">'bigquery_default'</span><span class="p">,</span> |
| <span class="n">delegate_to</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">labels</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> |
| <span class="n">encryption_configuration</span><span class="o">=</span><span class="kc">None</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">BigQueryToBigQueryOperator</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">source_project_dataset_tables</span> <span class="o">=</span> <span class="n">source_project_dataset_tables</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">destination_project_dataset_table</span> <span class="o">=</span> <span class="n">destination_project_dataset_table</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">write_disposition</span> <span class="o">=</span> <span class="n">write_disposition</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">create_disposition</span> <span class="o">=</span> <span class="n">create_disposition</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">bigquery_conn_id</span> <span class="o">=</span> <span class="n">bigquery_conn_id</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span> <span class="o">=</span> <span class="n">delegate_to</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">labels</span> <span class="o">=</span> <span class="n">labels</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">encryption_configuration</span> <span class="o">=</span> <span class="n">encryption_configuration</span> |
| |
| <div class="viewcode-block" id="BigQueryToBigQueryOperator.execute"><a class="viewcode-back" href="../../../../_api/airflow/contrib/operators/bigquery_to_bigquery/index.html#airflow.contrib.operators.bigquery_to_bigquery.BigQueryToBigQueryOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</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="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">'Executing copy of </span><span class="si">%s</span><span class="s1"> into: </span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">source_project_dataset_tables</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">destination_project_dataset_table</span> |
| <span class="p">)</span> |
| <span class="n">hook</span> <span class="o">=</span> <span class="n">BigQueryHook</span><span class="p">(</span><span class="n">bigquery_conn_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">bigquery_conn_id</span><span class="p">,</span> |
| <span class="n">delegate_to</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">delegate_to</span><span class="p">)</span> |
| <span class="n">conn</span> <span class="o">=</span> <span class="n">hook</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">run_copy</span><span class="p">(</span> |
| <span class="n">source_project_dataset_tables</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">source_project_dataset_tables</span><span class="p">,</span> |
| <span class="n">destination_project_dataset_table</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">destination_project_dataset_table</span><span class="p">,</span> |
| <span class="n">write_disposition</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">write_disposition</span><span class="p">,</span> |
| <span class="n">create_disposition</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">create_disposition</span><span class="p">,</span> |
| <span class="n">labels</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">labels</span><span class="p">,</span> |
| <span class="n">encryption_configuration</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">encryption_configuration</span><span class="p">)</span></div></div> |
| </pre></div> |
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