drivers: include source.search_drivers in GET /drivers

The search_drivers attribute is set at the source model level, not at
the the drivers model level.

Having said that, by adding its value in the response to GET /drivers,
we can avoid doing multiple HTTP calls in the make_ui function.

Signed-off-by: Olivier Gayot <olivier.gayot@canonical.com>

subiquity/client/controllers/drivers.py

@@ -31,13 +31,11 @@ class DriversController(SubiquityTuiController):
     endpoint_name = 'drivers'
 
     async def make_ui(self) -> DriversView:
-        source_endpoint = self.app.client.source
-        source_response = await source_endpoint.GET()
+        response: DriversResponse = await self.endpoint.GET()
 
-        if not source_response.search_drivers:
+        if not response.search_drivers:
             raise Skip
 
-        response: DriversResponse = await self.endpoint.GET()
         return DriversView(self, response.drivers,
                            response.install, response.local_only)
 

subiquity/common/types.py

@@ -399,10 +399,12 @@ class DriversResponse:
     to do it. It will bet set to None until we figure out what drivers are
     available.
     :local_only: tells if we are looking for drivers only from the ISO.
+    :search_drivers: enables or disables drivers listing.
     """
     install: bool
     drivers: Optional[List[str]]
     local_only: bool
+    search_drivers: bool
 
 
 @attr.s(auto_attribs=True)

subiquity/server/controllers/drivers.py

@@ -102,9 +102,12 @@ class DriversController(SubiquityController):
         if wait:
             await asyncio.shield(self._drivers_task)
 
+        search_drivers = self.app.controllers.Source.model.search_drivers
+
         return DriversResponse(install=self.model.do_install,
                                drivers=self.drivers,
-                               local_only=local_only)
+                               local_only=local_only,
+                               search_drivers=search_drivers)
 
     async def POST(self, data: DriversPayload) -> None:
         self.model.do_install = data.install