chore: Add logging for login for SSDLC

Author: steverydz

webapp/decorators.py

@@ -1,15 +1,19 @@
 # Core packages
 import functools
+from datetime import datetime
 
 # Third party packages
 import flask
+import logging
+
 
 from canonicalwebteam.store_api.publishergw import PublisherGW
 
 from webapp import authentication
 from webapp.helpers import api_publisher_session
 
 publisher_gateway = PublisherGW(api_publisher_session)
+logger = logging.getLogger(__name__)
 
 
 def login_required(func):
@@ -20,10 +24,35 @@ def login_required(func):
 
     @functools.wraps(func)
     def is_user_logged_in(*args, **kwargs):
+        date = datetime.now()
+        date_str = date.strftime("%Y-%m-%dT%H:%M:%S")
+
         if not authentication.is_authenticated(flask.session):
             authentication.empty_session(flask.session)
+
+            logger.warning(
+                "User login failed",
+                extra={
+                    "datetime": date_str,
+                    "appid": "snapcraft-io",
+                    "event": "authn_login_fail",
+                },
+            )
+
             return flask.redirect(f"/login?next={flask.request.path}")
 
+        publisher = flask.session.get("publisher")
+        user = publisher["email"]
+
+        logger.info(
+            f"User {user} login successfully",
+            extra={
+                "datetime": date_str,
+                "appid": "snapcraft-io",
+                "event": f"authn_successafterfail:{user}",
+            },
+        )
+
         return func(*args, **kwargs)
 
     return is_user_logged_in