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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 gcpcloudsql:// 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">&quot;database_type&quot;</span><span class="p">:</span> <span class="s2">&quot;mysql&quot;</span><span class="p">,</span>
<span class="nt">&quot;project_id&quot;</span><span class="p">:</span> <span class="s2">&quot;example-project&quot;</span><span class="p">,</span>
<span class="nt">&quot;location&quot;</span><span class="p">:</span> <span class="s2">&quot;europe-west1&quot;</span><span class="p">,</span>
<span class="nt">&quot;instance&quot;</span><span class="p">:</span> <span class="s2">&quot;testinstance&quot;</span><span class="p">,</span>
<span class="nt">&quot;use_proxy&quot;</span><span class="p">:</span> <span class="kc">true</span><span class="p">,</span>
<span class="nt">&quot;sql_proxy_use_tcp&quot;</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 AIRFLOW_CONN_* 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>gcpcloudsql://user:XXXXXXXXX@1.1.1.1:3306/mydb?database_type<span class="o">=</span>mysql<span class="p">&amp;</span><span class="nv">project_id</span><span class="o">=</span>example-project<span class="p">&amp;</span><span class="nv">location</span><span class="o">=</span>europe-west1<span class="p">&amp;</span><span class="nv">instance</span><span class="o">=</span>testinstance<span class="p">&amp;</span><span class="nv">use_proxy</span><span class="o">=</span>True<span class="p">&amp;</span><span class="nv">sql_proxy_use_tcp</span><span class="o">=</span>False
</pre></div>
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