Improved bugsnag reporting

- Include release stage, which should be 'production' or 'development',
  and gets postfixed by '-debug' when running in debug mode.
- Properly logging remote IP address when proxied through HAProxy;
- Log user ID, email, username, roles, and capabilities;
- Remove authentication tokens from logged session;
- Log request data and JSON separately.
- Added request endpoint.

pillar/bugsnag_extra.py

@@ -0,0 +1,51 @@
+# Keys in the user's session dictionary that are removed before sending to Bugsnag.
+SESSION_KEYS_TO_REMOVE = ('blender_id_oauth_token', 'user_id')
+
+
+def add_pillar_request_to_notification(notification):
+    """Adds request metadata to the Bugsnag notifications.
+
+    This basically copies bugsnag.flask.add_flask_request_to_notification,
+    but is altered to include Pillar-specific metadata.
+    """
+    from flask import request, session
+    from bugsnag.wsgi import request_path
+    import pillar.auth
+
+    if not request:
+        return
+
+    notification.context = "%s %s" % (request.method,
+                                      request_path(request.environ))
+
+    if 'id' not in notification.user:
+        user: pillar.auth.UserClass = pillar.auth.current_user._get_current_object()
+        notification.set_user(id=user.user_id,
+                              email=user.email,
+                              name=user.username)
+        notification.user['roles'] = sorted(user.roles)
+        notification.user['capabilities'] = sorted(user.capabilities)
+
+    session_dict = dict(session)
+    for key in SESSION_KEYS_TO_REMOVE:
+        try:
+            del session_dict[key]
+        except KeyError:
+            pass
+    notification.add_tab("session", session_dict)
+    notification.add_tab("environment", dict(request.environ))
+
+    remote_addr = request.remote_addr
+    forwarded_for = request.headers.get('X-Forwarded-For')
+    if forwarded_for:
+        remote_addr = f'{forwarded_for} (proxied via {remote_addr})'
+
+    notification.add_tab("request", {
+        "url": request.base_url,
+        "headers": dict(request.headers),
+        "params": dict(request.form),
+        "data": {'request.data': request.data,
+                 'request.json': request.get_json()},
+        "endpoint": request.endpoint,
+        "remote_addr": remote_addr,
+    })