add jupyter extensions to userprofile handler

cylc/uiserver/handlers.py

@@ -18,6 +18,7 @@
 import json
 import getpass
 import os
+import re
 from typing import TYPE_CHECKING, Callable, Dict
 
 from graphene_tornado.tornado_graphql_handler import TornadoGraphQLHandler
@@ -44,6 +45,7 @@
 
 
 ME = getpass.getuser()
+RE_SLASH = x = re.compile(r'\/+')
 
 
 def authorised(fun: Callable) -> Callable:
@@ -258,7 +260,6 @@ def set_default_headers(self) -> None:
         self.set_header("Content-Type", 'application/json')
 
     @web.authenticated
-    # @authorised  TODO: I can't think why we would want to authorise this
     def get(self):
         user_info = {
             **self.current_user.__dict__,
@@ -281,6 +282,19 @@ def get(self):
             user_info['mode'] = 'single user'
         else:
             user_info['mode'] = 'multi user'
+
+        user_info['extensions'] = {
+            app.name: RE_SLASH.sub(
+                '/', f'{self.serverapp.base_url}/{app.default_url}'
+            )
+            for extension_apps
+            in self.serverapp.extension_manager.extension_apps.values()
+            # filter out extensions that do not provide a default_url OR
+            # set it to the root endpoint.
+            for app in extension_apps
+            if getattr(app, 'default_url', '/') != '/'
+        }
+
         self.write(json.dumps(user_info))
 
 

cylc/uiserver/tests/test_handlers.py

@@ -15,6 +15,7 @@
 
 from functools import partial
 from getpass import getuser
+import json
 from unittest import mock
 from unittest.mock import MagicMock
 import pytest
@@ -120,3 +121,19 @@ def test_assert_callback_handler_gets_called(self):
         self.io_loop.run_sync(handler.open,
                               get_async_test_timeout())
         handler.subscription_server.handle.assert_called_once()
+
+
+@pytest.mark.integration
+async def test_userprofile(
+    jp_fetch, cylc_uis, jp_serverapp,
+):
+    """Test the userprofile endpoint."""
+    # patch the default_url back to how it is set in cylc.uiserver.app
+    cylc_uis.default_url = '/cylc'
+
+    response = await jp_fetch('cylc', 'userprofile')
+    user_profile = json.loads(response.body.decode())
+    assert user_profile['username'] == getuser()
+    assert user_profile['owner'] == getuser()
+    assert 'read' in user_profile['permissions']
+    assert 'cylc' in user_profile['extensions']