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.. _howto/connection:tableau:

Tableau Connection

The Tableau connection type enables the Tableau Integrations.

Authenticating to Tableau

There are two ways to connect to Tableau using Airflow.

1. Use Password and Username Authentication <https://tableau.github.io/server-client-python/docs/api-ref#tableauauth-class>_ i.e. add a password and login to the Airflow connection.
2. Use a Token Authentication <https://tableau.github.io/server-client-python/docs/api-ref#personalaccesstokenauth-class>_ i.e. add a token_name and personal_access_token to the Airflow connection (deprecated).
3. Use JSON Web Token (JWT) Authentication <https://tableau.github.io/server-client-python/docs/sign-in-out.html#sign-in-with-json-web-token-jwt>_ i.e add a jwt_file or a jwt_token to the Airflow connection extras.

Authentication by personal token was deprecated as Tableau automatically invalidates opened personal token connection if one or more parallel connections with the same token are opened. So, in the environments with multiple parallel tasks this authentication method can lead to numerous bugs and all the jobs will not run as they intended. Therefore, personal token auth option is considered harmful until the logic of Tableau server client changes.

Only one authorization method can be used at a time. If you need to manage multiple credentials or keys then you should configure multiple connections.

Default Connection IDs

All hooks and operators related to Tableau use tableau_default by default.

Configuring the Connection

Login (optional) Specify the tableau username used for the initial connection. Used with password authentication.

Password (optional) Specify the tableau password used for the initial connection. Used with password authentication.

Host Specify the Server URL <https://tableau.github.io/server-client-python/docs/api-ref#server>_ used for Tableau.

Extra (optional) Specify the extra parameters (as json dictionary) that can be used in Azure connection. The following parameters are all optional:

* ``site_id``: This corresponds to the contentUrl attribute in the Tableau REST API. The ``site_id`` is the portion of
  the URL that follows the **/site/** in the URL. For example, **MarketingTeam** is the ``site_id`` in the following URL
  **MyServer/#/site/MarketingTeam/projects**. To specify the default site on Tableau Server, you can use an empty string
  **''** (single quotes, no space). For Tableau Online, you must provide a value for the ``site_id.``
  This is used for both token and password Authentication.
* ``token_name``: The personal access token name.
  This is used with token authentication.
* ``personal_access_token``: The personal access token value.
  This is used with token authentication.
* ``verify``: Either a boolean, in which case it controls whether we verify the server's TLS certificate, or a string, in which case it must be a path to a CA bundle to use. Defaults to True.
* ``cert``: if String, path to ssl client cert file (.pem). If Tuple, ('cert', 'key') pair.
* ``jwt_token`` - If jwt authentication should be used, the value of token is given via this parameter.
* ``jwt_file``  - If jwt authentication should be used, the location on disk for the file containing the jwt token.

When specifying the connection in environment variable you should specify it using URI syntax.

Note that all components of the URI should be URL-encoded.

For example:

.. code-block:: bash

export AIRFLOW_CONN_TABLEAU_DEFAULT='tableau://username:password@https%3A%2F%2FMY-SERVER%2F?site_id=example-id'