enable user auth state

Author: weklund

images/jupyter-hub/jupyterhub_config.py

@@ -169,6 +169,16 @@ def per_user_profiles(spawner):
 # Try to validate session / refresh token every 10 minutes
 c.Authenticator.auth_refresh_age = 600
 
+# Needed to save refresh token
+c.Authenticator.enable_auth_state = True
+
+if 'JUPYTERHUB_CRYPT_KEY' not in os.environ:
+    app_log.warn(
+        "Need JUPYTERHUB_CRYPT_KEY env for persistent auth_state.\n"
+        "    export JUPYTERHUB_CRYPT_KEY=$(openssl rand -hex 32)"
+    )
+    c.CryptKeeper.keys = [ os.urandom(32) ]
+
 """
 EXTRAS
 """

images/jupyter-hub/utils/jupyterhub_utils/authenticator.py

@@ -110,4 +110,3 @@ def _get_token(url: str) -> str:
             app_log.error("url:\n%s", url)
             raise HTTPError(500, f"url: {url}")
         return parts[1]
-