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| <div class="section" id="google-cloud-platform-connection"> |
| <span id="howto-connection-gcp"></span><h1>Google Cloud Platform Connection<a class="headerlink" href="#google-cloud-platform-connection" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>The Google Cloud Platform connection type enables the <a class="reference internal" href="../../integration.html#gcp"><span class="std std-ref">GCP Integrations</span></a>.</p> |
| <div class="section" id="authenticating-to-gcp"> |
| <h2>Authenticating to GCP<a class="headerlink" href="#authenticating-to-gcp" title="Permalink to this headline">ΒΆ</a></h2> |
| <p>There are three ways to connect to GCP using Airflow.</p> |
| <ol class="arabic simple"> |
| <li><p>Use <a class="reference external" href="https://google-auth.readthedocs.io/en/latest/reference/google.auth.html#google.auth.default">Application Default Credentials</a>, |
| such as via the metadata server when running on Google Compute Engine.</p></li> |
| <li><p>Use a <a class="reference external" href="https://cloud.google.com/docs/authentication/#service_accounts">service account</a> key |
| file (JSON format) on disk - <code class="docutils literal notranslate"><span class="pre">Keyfile</span> <span class="pre">Path</span></code>.</p></li> |
| <li><p>Use a service account key file (JSON format) from connection configuration - <code class="docutils literal notranslate"><span class="pre">Keyfile</span> <span class="pre">JSON</span></code>.</p></li> |
| </ol> |
| </div> |
| <div class="section" id="default-connection-ids"> |
| <h2>Default Connection IDs<a class="headerlink" href="#default-connection-ids" title="Permalink to this headline">ΒΆ</a></h2> |
| <p>The following connection IDs are used by default.</p> |
| <dl class="simple"> |
| <dt><code class="docutils literal notranslate"><span class="pre">bigquery_default</span></code></dt><dd><p>Used by the <a class="reference internal" href="../../_api/airflow/contrib/hooks/bigquery_hook/index.html#airflow.contrib.hooks.bigquery_hook.BigQueryHook" title="airflow.contrib.hooks.bigquery_hook.BigQueryHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">BigQueryHook</span></code></a> |
| hook.</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">google_cloud_datastore_default</span></code></dt><dd><p>Used by the <a class="reference internal" href="../../_api/airflow/contrib/hooks/datastore_hook/index.html#airflow.contrib.hooks.datastore_hook.DatastoreHook" title="airflow.contrib.hooks.datastore_hook.DatastoreHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">DatastoreHook</span></code></a> |
| hook.</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">google_cloud_default</span></code></dt><dd><p>Used by those hooks:</p> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_api_base_hook/index.html#airflow.contrib.hooks.gcp_api_base_hook.GoogleCloudBaseHook" title="airflow.contrib.hooks.gcp_api_base_hook.GoogleCloudBaseHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">GoogleCloudBaseHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_dataflow_hook/index.html#airflow.contrib.hooks.gcp_dataflow_hook.DataFlowHook" title="airflow.contrib.hooks.gcp_dataflow_hook.DataFlowHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">DataFlowHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_dataproc_hook/index.html#airflow.contrib.hooks.gcp_dataproc_hook.DataProcHook" title="airflow.contrib.hooks.gcp_dataproc_hook.DataProcHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">DataProcHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_mlengine_hook/index.html#airflow.contrib.hooks.gcp_mlengine_hook.MLEngineHook" title="airflow.contrib.hooks.gcp_mlengine_hook.MLEngineHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">MLEngineHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcs_hook/index.html#airflow.contrib.hooks.gcs_hook.GoogleCloudStorageHook" title="airflow.contrib.hooks.gcs_hook.GoogleCloudStorageHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">GoogleCloudStorageHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_bigtable_hook/index.html#airflow.contrib.hooks.gcp_bigtable_hook.BigtableHook" title="airflow.contrib.hooks.gcp_bigtable_hook.BigtableHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">BigtableHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_compute_hook/index.html#airflow.contrib.hooks.gcp_compute_hook.GceHook" title="airflow.contrib.hooks.gcp_compute_hook.GceHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">GceHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_function_hook/index.html#airflow.contrib.hooks.gcp_function_hook.GcfHook" title="airflow.contrib.hooks.gcp_function_hook.GcfHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">GcfHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_spanner_hook/index.html#airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook" title="airflow.contrib.hooks.gcp_spanner_hook.CloudSpannerHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSpannerHook</span></code></a></p></li> |
| <li><p><a class="reference internal" href="../../_api/airflow/contrib/hooks/gcp_sql_hook/index.html#airflow.contrib.hooks.gcp_sql_hook.CloudSqlHook" title="airflow.contrib.hooks.gcp_sql_hook.CloudSqlHook"><code class="xref py py-class docutils literal notranslate"><span class="pre">CloudSqlHook</span></code></a></p></li> |
| </ul> |
| </dd> |
| </dl> |
| </div> |
| <div class="section" id="configuring-the-connection"> |
| <h2>Configuring the Connection<a class="headerlink" href="#configuring-the-connection" title="Permalink to this headline">ΒΆ</a></h2> |
| <dl> |
| <dt>Project Id (optional)</dt><dd><p>The Google Cloud project ID to connect to. It is used as default project id by operators using it and |
| can usually be overridden at the operator level.</p> |
| </dd> |
| <dt>Keyfile Path</dt><dd><p>Path to a <a class="reference external" href="https://cloud.google.com/docs/authentication/#service_accounts">service account</a> key |
| file (JSON format) on disk.</p> |
| <p>Not required if using application default credentials.</p> |
| </dd> |
| <dt>Keyfile JSON</dt><dd><p>Contents of a <a class="reference external" href="https://cloud.google.com/docs/authentication/#service_accounts">service account</a> key |
| file (JSON format) on disk. It is recommended to <a class="reference internal" href="../secure-connections.html"><span class="doc">Secure your connections</span></a> if using this method to authenticate.</p> |
| <p>Not required if using application default credentials.</p> |
| </dd> |
| <dt>Scopes (comma separated)</dt><dd><p>A list of comma-separated <a class="reference external" href="https://developers.google.com/identity/protocols/googlescopes">Google Cloud scopes</a> to |
| authenticate with.</p> |
| </dd> |
| <dt>Number of Retries</dt><dd><p>Integer, number of times to retry with randomized |
| exponential backoff. If all retries fail, the <code class="xref py py-class docutils literal notranslate"><span class="pre">googleapiclient.errors.HttpError</span></code> |
| represents the last request. If zero (default), we attempt the |
| request only once.</p> |
| <p>When specifying the connection in environment variable you should specify |
| it using URI syntax, with the following requirements:</p> |
| <blockquote> |
| <div><ul class="simple"> |
| <li><p>scheme part should be equals <code class="docutils literal notranslate"><span class="pre">google-cloud-platform</span></code> (Note: look for a |
| hyphen character)</p></li> |
| <li><p>authority (username, password, host, port), path is ignored</p></li> |
| <li><p>query parameters contains information specific to this type of |
| connection. The following keys are accepted:</p> |
| <ul> |
| <li><p><code class="docutils literal notranslate"><span class="pre">extra__google_cloud_platform__project</span></code> - Project Id</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">extra__google_cloud_platform__key_path</span></code> - Keyfile Path</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">extra__google_cloud_platform__keyfile_dict</span></code> - Keyfile JSON</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">extra__google_cloud_platform__scope</span></code> - Scopes</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">extra__google_cloud_platform__num_retries</span></code> - Number of Retries</p></li> |
| </ul> |
| </li> |
| </ul> |
| </div></blockquote> |
| <p>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_DEFAULT</span><span class="o">=</span><span class="s1">'google-cloud-platform://?extra__google_cloud_platform__key_path=%2Fkeys%2Fkey.json&extra__google_cloud_platform__scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fcloud-platform&extra__google_cloud_platform__project=airflow&extra__google_cloud_platform__num_retries=5'</span> |
| </pre></div> |
| </div> |
| </dd> |
| </dl> |
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