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| <div class="section" id="google-cloud-sql-connection"> |
| <h1>Google Cloud SQL Connection<a class="headerlink" href="#google-cloud-sql-connection" title="Permalink to this headline">¶</a></h1> |
| <p>The <code class="docutils literal notranslate"><span class="pre">gcpcloudsql://</span></code> connection is used by |
| <a class="reference internal" href="../../_api/airflow/contrib/operators/gcp_sql_operator/index.html#airflow.contrib.operators.gcp_sql_operator.CloudSqlQueryOperator" title="airflow.contrib.operators.gcp_sql_operator.CloudSqlQueryOperator"><code class="xref py py-class docutils literal notranslate"><span class="pre">airflow.contrib.operators.gcp_sql_operator.CloudSqlQueryOperator</span></code></a> to perform query |
| on a Google Cloud SQL database. Google Cloud SQL database can be either |
| Postgres or MySQL, so this is a “meta” connection type. It introduces common schema |
| for both MySQL and Postgres, including what kind of connectivity should be used. |
| Google Cloud SQL supports connecting via public IP or via Cloud SQL Proxy. |
| In the latter case the |
| <a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_sql_hook/index.html#airflow.contrib.hooks.gcp_sql_hook.CloudSqlDatabaseHook" title="airflow.contrib.hooks.gcp_sql_hook.CloudSqlDatabaseHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSqlDatabaseHook</span></code></a> uses |
| <a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_sql_hook/index.html#airflow.contrib.hooks.gcp_sql_hook.CloudSqlProxyRunner" title="airflow.contrib.hooks.gcp_sql_hook.CloudSqlProxyRunner"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSqlProxyRunner</span></code></a> to automatically prepare |
| and use temporary Postgres or MySQL connection that will use the proxy to connect |
| (either via TCP or UNIX socket.</p> |
| <div class="section" id="configuring-the-connection"> |
| <h2>Configuring the Connection<a class="headerlink" href="#configuring-the-connection" title="Permalink to this headline">¶</a></h2> |
| <dl> |
| <dt>Host (required)</dt><dd><p>The host to connect to.</p> |
| </dd> |
| <dt>Schema (optional)</dt><dd><p>Specify the schema name to be used in the database.</p> |
| </dd> |
| <dt>Login (required)</dt><dd><p>Specify the user name to connect.</p> |
| </dd> |
| <dt>Password (required)</dt><dd><p>Specify the password to connect.</p> |
| </dd> |
| <dt>Extra (optional)</dt><dd><p>Specify the extra parameters (as JSON dictionary) that can be used in Google Cloud SQL |
| connection.</p> |
| <p>Details of all the parameters supported in extra field can be found in |
| <a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_sql_hook/index.html#airflow.contrib.hooks.gcp_sql_hook.CloudSqlDatabaseHook" title="airflow.contrib.hooks.gcp_sql_hook.CloudSqlDatabaseHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSqlDatabaseHook</span></code></a></p> |
| <p>Example “extras” field:</p> |
| <div class="highlight-json notranslate"><div class="highlight"><pre><span></span><span class="p">{</span> |
| <span class="nt">"database_type"</span><span class="p">:</span> <span class="s2">"mysql"</span><span class="p">,</span> |
| <span class="nt">"project_id"</span><span class="p">:</span> <span class="s2">"example-project"</span><span class="p">,</span> |
| <span class="nt">"location"</span><span class="p">:</span> <span class="s2">"europe-west1"</span><span class="p">,</span> |
| <span class="nt">"instance"</span><span class="p">:</span> <span class="s2">"testinstance"</span><span class="p">,</span> |
| <span class="nt">"use_proxy"</span><span class="p">:</span> <span class="kc">true</span><span class="p">,</span> |
| <span class="nt">"sql_proxy_use_tcp"</span><span class="p">:</span> <span class="kc">false</span> |
| <span class="p">}</span> |
| </pre></div> |
| </div> |
| <p>When specifying the connection as URI (in <code class="docutils literal notranslate"><span class="pre">AIRFLOW_CONN_*</span></code> variable), you should specify |
| it following the standard syntax of DB connection, where extras are passed as |
| parameters of the URI. Note that all components of the URI should be URL-encoded.</p> |
| <p>For example:</p> |
| <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nb">export</span> <span class="nv">AIRFLOW_CONN_GOOGLE_CLOUD_SQL_DEFAULT</span><span class="o">=</span><span class="s1">'gcpcloudsql://user:XXXXXXXXX@1.1.1.1:3306/mydb?database_type=mysql&project_id=example-project&location=europe-west1&instance=testinstance&use_proxy=True&sql_proxy_use_tcp=False'</span> |
| </pre></div> |
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