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Introduction

JIRA: 

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1. Everything is under /admin
2. There is very limited authorization (authz) functionality
3. There is no auditing about who is triggering an action via the UI
   It looks like airflow.www.utils contains an annotation method called action_logging, which logs actions!

The goal of this document is to address these issues.

Design

UI

The idea is to add a new endpoint called /dags, which is parallel to the /admin UI. This UI will use the same template as the existing DAGs UI in /admin. It will not, however, have any other tabs (Data Profiling, Browse, Admin).

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And perhaps a couple others that I'm missing. The point is that we'd limit the access in the /dags view pretty severely. We'll create a /dags route with: /dags, /dags/refresh, /dags/tree, etc.

Roles

We will introduce three levels of access:

• dag_viewer: Can see everything associated with a given DAG.
• dag_editor: Can edit the status of tasks in a DAG.
• dag_executor: Can click the 'Run' button on a task to have it triggered immediately. Only works for CeleryExecutor.

Groups

We will add the concept of groups. Users can be a member of a group. Both groups and members can be assigned DAG access permissions.

Implementation

Airflow already uses Flask-Login, so we can use this as the login mechanism. Airflow already has LDAP and Kerberos backends (as well as a GitHub backend).

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