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| <div class="section" id="google-cloud-spanner-operators"> |
| <h1>Google Cloud Spanner Operators<a class="headerlink" href="#google-cloud-spanner-operators" title="Permalink to this headline">¶</a></h1> |
| <div class="contents local topic" id="contents"> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="#cloudspannerinstancedatabasedeleteoperator" id="id17">CloudSpannerInstanceDatabaseDeleteOperator</a></p></li> |
| <li><p><a class="reference internal" href="#cloudspannerinstancedatabasedeployoperator" id="id18">CloudSpannerInstanceDatabaseDeployOperator</a></p></li> |
| <li><p><a class="reference internal" href="#cloudspannerinstancedatabaseupdateoperator" id="id19">CloudSpannerInstanceDatabaseUpdateOperator</a></p></li> |
| <li><p><a class="reference internal" href="#cloudspannerinstancedatabasequeryoperator" id="id20">CloudSpannerInstanceDatabaseQueryOperator</a></p></li> |
| <li><p><a class="reference internal" href="#cloudspannerinstancedeleteoperator" id="id21">CloudSpannerInstanceDeleteOperator</a></p></li> |
| </ul> |
| </div> |
| <div class="section" id="cloudspannerinstancedatabasedeleteoperator"> |
| <span id="howto-operator-cloudspannerinstancedatabasedeleteoperator"></span><h2><a class="toc-backref" href="#id17">CloudSpannerInstanceDatabaseDeleteOperator</a><a class="headerlink" href="#cloudspannerinstancedatabasedeleteoperator" title="Permalink to this headline">¶</a></h2> |
| <p>Deletes a database from the specified Cloud Spanner instance. If the database does not |
| exist, no action is taken, and the operator succeeds.</p> |
| <p>For parameter definition, take a look at |
| <a class="reference internal" href="../../../_api/airflow/contrib/operators/gcp_spanner_operator/index.html#airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseDeleteOperator" title="airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseDeleteOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerInstanceDatabaseDeleteOperator</span></code></a>.</p> |
| <div class="section" id="arguments"> |
| <h3>Arguments<a class="headerlink" href="#arguments" title="Permalink to this headline">¶</a></h3> |
| <p>Some arguments in the example DAG are taken from environment variables.</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_PROJECT_ID'</span><span class="p">,</span> <span class="s1">'example-project'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_INSTANCE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_INSTANCE_ID'</span><span class="p">,</span> <span class="s1">'testinstance'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DATABASE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DATABASE_ID'</span><span class="p">,</span> <span class="s1">'testdatabase'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_CONFIG_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_CONFIG_NAME'</span><span class="p">,</span> |
| <span class="s1">'projects/example-project/instanceConfigs/eur3'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_NODE_COUNT</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_NODE_COUNT'</span><span class="p">,</span> <span class="s1">'1'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DISPLAY_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DISPLAY_NAME'</span><span class="p">,</span> <span class="s1">'Test Instance'</span><span class="p">)</span> |
| <span class="c1"># OPERATION_ID should be unique per operation</span> |
| <span class="n">OPERATION_ID</span> <span class="o">=</span> <span class="s1">'unique_operation_id'</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="using-the-operator"> |
| <h3>Using the operator<a class="headerlink" href="#using-the-operator" title="Permalink to this headline">¶</a></h3> |
| <p>You can create the operator with or without project id. If project id is missing |
| it will be retrieved from the GCP connection used. Both variants are shown:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_database_delete_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseDeleteOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_delete_task'</span> |
| <span class="p">)</span> |
| <span class="n">spanner_database_delete_task2</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseDeleteOperator</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_delete_task2'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="templating"> |
| <h3>Templating<a class="headerlink" href="#templating" title="Permalink to this headline">¶</a></h3> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'instance_id'</span><span class="p">,</span> <span class="s1">'gcp_conn_id'</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="more-information"> |
| <h3>More information<a class="headerlink" href="#more-information" title="Permalink to this headline">¶</a></h3> |
| <p>See <a class="reference external" href="https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instances.databases/dropDatabase">Google Cloud Spanner API documentation to drop an instance of a database</a>.</p> |
| </div> |
| </div> |
| <div class="section" id="cloudspannerinstancedatabasedeployoperator"> |
| <span id="howto-operator-cloudspannerinstancedatabasedeployoperator"></span><h2><a class="toc-backref" href="#id18">CloudSpannerInstanceDatabaseDeployOperator</a><a class="headerlink" href="#cloudspannerinstancedatabasedeployoperator" title="Permalink to this headline">¶</a></h2> |
| <p>Creates a new Cloud Spanner database in the specified instance, or if the |
| desired database exists, assumes success with no changes applied to database |
| configuration. No structure of the database is verified - it’s enough if the database exists |
| with the same name.</p> |
| <p>For parameter definition, take a look at |
| <a class="reference internal" href="../../../_api/airflow/contrib/operators/gcp_spanner_operator/index.html#airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseDeployOperator" title="airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseDeployOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerInstanceDatabaseDeployOperator</span></code></a>.</p> |
| <div class="section" id="id1"> |
| <h3>Arguments<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3> |
| <p>Some arguments in the example DAG are taken from environment variables.</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_PROJECT_ID'</span><span class="p">,</span> <span class="s1">'example-project'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_INSTANCE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_INSTANCE_ID'</span><span class="p">,</span> <span class="s1">'testinstance'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DATABASE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DATABASE_ID'</span><span class="p">,</span> <span class="s1">'testdatabase'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_CONFIG_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_CONFIG_NAME'</span><span class="p">,</span> |
| <span class="s1">'projects/example-project/instanceConfigs/eur3'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_NODE_COUNT</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_NODE_COUNT'</span><span class="p">,</span> <span class="s1">'1'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DISPLAY_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DISPLAY_NAME'</span><span class="p">,</span> <span class="s1">'Test Instance'</span><span class="p">)</span> |
| <span class="c1"># OPERATION_ID should be unique per operation</span> |
| <span class="n">OPERATION_ID</span> <span class="o">=</span> <span class="s1">'unique_operation_id'</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id2"> |
| <h3>Using the operator<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3> |
| <p>You can create the operator with or without project id. If project id is missing |
| it will be retrieved from the GCP connection used. Both variants are shown:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_database_deploy_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseDeployOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="p">[</span> |
| <span class="s2">"CREATE TABLE my_table1 (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="s2">"CREATE TABLE my_table2 (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_deploy_task'</span> |
| <span class="p">)</span> |
| <span class="n">spanner_database_deploy_task2</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseDeployOperator</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="p">[</span> |
| <span class="s2">"CREATE TABLE my_table1 (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="s2">"CREATE TABLE my_table2 (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_deploy_task2'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id3"> |
| <h3>Templating<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h3> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'instance_id'</span><span class="p">,</span> <span class="s1">'database_id'</span><span class="p">,</span> <span class="s1">'ddl_statements'</span><span class="p">,</span> |
| <span class="s1">'gcp_conn_id'</span><span class="p">)</span> |
| <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,</span> <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="id4"> |
| <h3>More information<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h3> |
| <p>See Google Cloud Spanner API documentation <a class="reference external" href="https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instances.databases/create">to create a new database</a>.</p> |
| </div> |
| </div> |
| <div class="section" id="cloudspannerinstancedatabaseupdateoperator"> |
| <span id="howto-operator-cloudspannerinstancedatabaseupdateoperator"></span><h2><a class="toc-backref" href="#id19">CloudSpannerInstanceDatabaseUpdateOperator</a><a class="headerlink" href="#cloudspannerinstancedatabaseupdateoperator" title="Permalink to this headline">¶</a></h2> |
| <p>Runs a DDL query in a Cloud Spanner database and allows you to modify the structure of an |
| existing database.</p> |
| <p>You can optionally specify an operation_id parameter which simplifies determining whether |
| the statements were executed in case the update_database call is replayed |
| (idempotency check). The operation_id should be unique within the database, and must be |
| a valid identifier: <cite>[a-z][a-z0-9_]*</cite>. More information can be found in |
| <a class="reference external" href="https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instances.databases/updateDdl">the documentation of updateDdl API</a></p> |
| <p>For parameter definition take a look at |
| <a class="reference internal" href="../../../_api/airflow/contrib/operators/gcp_spanner_operator/index.html#airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseUpdateOperator" title="airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseUpdateOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerInstanceDatabaseUpdateOperator</span></code></a>.</p> |
| <div class="section" id="id5"> |
| <h3>Arguments<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h3> |
| <p>Some arguments in the example DAG are taken from environment variables.</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_PROJECT_ID'</span><span class="p">,</span> <span class="s1">'example-project'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_INSTANCE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_INSTANCE_ID'</span><span class="p">,</span> <span class="s1">'testinstance'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DATABASE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DATABASE_ID'</span><span class="p">,</span> <span class="s1">'testdatabase'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_CONFIG_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_CONFIG_NAME'</span><span class="p">,</span> |
| <span class="s1">'projects/example-project/instanceConfigs/eur3'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_NODE_COUNT</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_NODE_COUNT'</span><span class="p">,</span> <span class="s1">'1'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DISPLAY_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DISPLAY_NAME'</span><span class="p">,</span> <span class="s1">'Test Instance'</span><span class="p">)</span> |
| <span class="c1"># OPERATION_ID should be unique per operation</span> |
| <span class="n">OPERATION_ID</span> <span class="o">=</span> <span class="s1">'unique_operation_id'</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id6"> |
| <h3>Using the operator<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h3> |
| <p>You can create the operator with or without project id. If project id is missing |
| it will be retrieved from the GCP connection used. Both variants are shown:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_database_update_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseUpdateOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="p">[</span> |
| <span class="s2">"CREATE TABLE my_table3 (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_update_task'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_database_update_idempotent1_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseUpdateOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">operation_id</span><span class="o">=</span><span class="n">OPERATION_ID</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="p">[</span> |
| <span class="s2">"CREATE TABLE my_table_unique (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_update_idempotent1_task'</span> |
| <span class="p">)</span> |
| <span class="n">spanner_database_update_idempotent2_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseUpdateOperator</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">operation_id</span><span class="o">=</span><span class="n">OPERATION_ID</span><span class="p">,</span> |
| <span class="n">ddl_statements</span><span class="o">=</span><span class="p">[</span> |
| <span class="s2">"CREATE TABLE my_table_unique (id INT64, name STRING(MAX)) PRIMARY KEY (id)"</span><span class="p">,</span> |
| <span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_database_update_idempotent2_task'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id7"> |
| <h3>Templating<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h3> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'instance_id'</span><span class="p">,</span> <span class="s1">'database_id'</span><span class="p">,</span> <span class="s1">'ddl_statements'</span><span class="p">,</span> |
| <span class="s1">'gcp_conn_id'</span><span class="p">)</span> |
| <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,</span> <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="id8"> |
| <h3>More information<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h3> |
| <p>See Google Cloud Spanner API documentation for <a class="reference external" href="https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instances.databases/updateDdl">database update_ddl</a>.</p> |
| </div> |
| </div> |
| <div class="section" id="cloudspannerinstancedatabasequeryoperator"> |
| <span id="howto-operator-cloudspannerinstancedatabasequeryoperator"></span><h2><a class="toc-backref" href="#id20">CloudSpannerInstanceDatabaseQueryOperator</a><a class="headerlink" href="#cloudspannerinstancedatabasequeryoperator" title="Permalink to this headline">¶</a></h2> |
| <p>Executes an arbitrary DML query (INSERT, UPDATE, DELETE).</p> |
| <p>For parameter definition take a look at |
| <a class="reference internal" href="../../../_api/airflow/contrib/operators/gcp_spanner_operator/index.html#airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseQueryOperator" title="airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDatabaseQueryOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerInstanceDatabaseQueryOperator</span></code></a>.</p> |
| <div class="section" id="id9"> |
| <h3>Arguments<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h3> |
| <p>Some arguments in the example DAG are taken from environment variables.</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_PROJECT_ID'</span><span class="p">,</span> <span class="s1">'example-project'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_INSTANCE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_INSTANCE_ID'</span><span class="p">,</span> <span class="s1">'testinstance'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DATABASE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DATABASE_ID'</span><span class="p">,</span> <span class="s1">'testdatabase'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_CONFIG_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_CONFIG_NAME'</span><span class="p">,</span> |
| <span class="s1">'projects/example-project/instanceConfigs/eur3'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_NODE_COUNT</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_NODE_COUNT'</span><span class="p">,</span> <span class="s1">'1'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DISPLAY_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DISPLAY_NAME'</span><span class="p">,</span> <span class="s1">'Test Instance'</span><span class="p">)</span> |
| <span class="c1"># OPERATION_ID should be unique per operation</span> |
| <span class="n">OPERATION_ID</span> <span class="o">=</span> <span class="s1">'unique_operation_id'</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id10"> |
| <h3>Using the operator<a class="headerlink" href="#id10" title="Permalink to this headline">¶</a></h3> |
| <p>You can create the operator with or without project id. If project id is missing |
| it will be retrieved from the GCP connection used. Both variants are shown:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_instance_query_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseQueryOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">query</span><span class="o">=</span><span class="p">[</span><span class="s2">"DELETE FROM my_table2 WHERE true"</span><span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_instance_query_task'</span> |
| <span class="p">)</span> |
| <span class="n">spanner_instance_query_task2</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDatabaseQueryOperator</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">database_id</span><span class="o">=</span><span class="n">GCP_SPANNER_DATABASE_ID</span><span class="p">,</span> |
| <span class="n">query</span><span class="o">=</span><span class="p">[</span><span class="s2">"DELETE FROM my_table2 WHERE true"</span><span class="p">],</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_instance_query_task2'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id11"> |
| <h3>Templating<a class="headerlink" href="#id11" title="Permalink to this headline">¶</a></h3> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'instance_id'</span><span class="p">,</span> <span class="s1">'database_id'</span><span class="p">,</span> <span class="s1">'query'</span><span class="p">,</span> <span class="s1">'gcp_conn_id'</span><span class="p">)</span> |
| <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sql'</span><span class="p">,)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="id12"> |
| <h3>More information<a class="headerlink" href="#id12" title="Permalink to this headline">¶</a></h3> |
| <p>See Google Cloud Spanner API documentation for more information about <a class="reference external" href="https://cloud.google.com/spanner/docs/dml-syntax">DML syntax</a>.</p> |
| </div> |
| </div> |
| <div class="section" id="cloudspannerinstancedeleteoperator"> |
| <span id="howto-operator-cloudspannerinstancedeleteoperator"></span><h2><a class="toc-backref" href="#id21">CloudSpannerInstanceDeleteOperator</a><a class="headerlink" href="#cloudspannerinstancedeleteoperator" title="Permalink to this headline">¶</a></h2> |
| <p>Deletes a Cloud Spanner instance. If an instance does not exist, no action is taken, |
| and the operator succeeds.</p> |
| <p>For parameter definition take a look at |
| <a class="reference internal" href="../../../_api/airflow/contrib/operators/gcp_spanner_operator/index.html#airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDeleteOperator" title="airflow.contrib.operators.gcp_spanner_operator.CloudSpannerInstanceDeleteOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerInstanceDeleteOperator</span></code></a>.</p> |
| <div class="section" id="id13"> |
| <h3>Arguments<a class="headerlink" href="#id13" title="Permalink to this headline">¶</a></h3> |
| <p>Some arguments in the example DAG are taken from environment variables:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">GCP_PROJECT_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_PROJECT_ID'</span><span class="p">,</span> <span class="s1">'example-project'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_INSTANCE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_INSTANCE_ID'</span><span class="p">,</span> <span class="s1">'testinstance'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DATABASE_ID</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DATABASE_ID'</span><span class="p">,</span> <span class="s1">'testdatabase'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_CONFIG_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_CONFIG_NAME'</span><span class="p">,</span> |
| <span class="s1">'projects/example-project/instanceConfigs/eur3'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_NODE_COUNT</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_NODE_COUNT'</span><span class="p">,</span> <span class="s1">'1'</span><span class="p">)</span> |
| <span class="n">GCP_SPANNER_DISPLAY_NAME</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'GCP_SPANNER_DISPLAY_NAME'</span><span class="p">,</span> <span class="s1">'Test Instance'</span><span class="p">)</span> |
| <span class="c1"># OPERATION_ID should be unique per operation</span> |
| <span class="n">OPERATION_ID</span> <span class="o">=</span> <span class="s1">'unique_operation_id'</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id14"> |
| <h3>Using the operator<a class="headerlink" href="#id14" title="Permalink to this headline">¶</a></h3> |
| <p>You can create the operator with or without project id. If project id is missing |
| it will be retrieved from the GCP connection used. Both variants are shown:</p> |
| <div class="example-block-wrapper docutils container"> |
| <p class="example-header example-header--with-button"><span class="example-title">airflow/contrib/example_dags/example_gcp_spanner.py</span><a class="example-header-button viewcode-button reference internal" href="../../../_modules/airflow/contrib/example_dags/example_gcp_spanner.html"><span>View Source</span></a></p> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">spanner_instance_delete_task</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDeleteOperator</span><span class="p">(</span> |
| <span class="n">project_id</span><span class="o">=</span><span class="n">GCP_PROJECT_ID</span><span class="p">,</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_instance_delete_task'</span> |
| <span class="p">)</span> |
| <span class="n">spanner_instance_delete_task2</span> <span class="o">=</span> <span class="n">CloudSpannerInstanceDeleteOperator</span><span class="p">(</span> |
| <span class="n">instance_id</span><span class="o">=</span><span class="n">GCP_SPANNER_INSTANCE_ID</span><span class="p">,</span> |
| <span class="n">task_id</span><span class="o">=</span><span class="s1">'spanner_instance_delete_task2'</span> |
| <span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <div class="section" id="id15"> |
| <h3>Templating<a class="headerlink" href="#id15" title="Permalink to this headline">¶</a></h3> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'project_id'</span><span class="p">,</span> <span class="s1">'instance_id'</span><span class="p">,</span> <span class="s1">'gcp_conn_id'</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="id16"> |
| <h3>More information<a class="headerlink" href="#id16" title="Permalink to this headline">¶</a></h3> |
| <p>See Google Cloud Spanner API documentation to <a class="reference external" href="https://cloud.google.com/spanner/docs/reference/rest/v1/projects.instances/delete">delete an instance</a>.</p> |
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