[v9.3.x] Access Control: Clear user's permission cache after resource creation (#59307)

Access Control: Clear user's permission cache after resource creation (#59101)

* refresh user's permission cache after resource creation

* clear the cache instead of reloading the permissions

* don't error if can't clear cache

* fix tests

* fix tests again

(cherry picked from commit a8bae3f0b0)

Co-authored-by: Ieva <ieva.vasiljeva@grafana.com>

pkg/api/dashboard.go

@@ -470,7 +470,7 @@ func (hs *HTTPServer) postDashboard(c *models.ReqContext, cmd models.SaveDashboa
 		}
 
 		if liveerr != nil {
-			hs.log.Warn("unable to broadcast save event", "uid", dashboard.Uid, "error", err)
+			hs.log.Warn("unable to broadcast save event", "uid", dashboard.Uid, "error", liveerr)
 		}
 	}
 
@@ -478,6 +478,12 @@ func (hs *HTTPServer) postDashboard(c *models.ReqContext, cmd models.SaveDashboa
 		return apierrors.ToDashboardErrorResponse(ctx, hs.pluginStore, err)
 	}
 
+	// Clear permission cache for the user who's created the dashboard, so that new permissions are fetched for their next call
+	// Required for cases when caller wants to immediately interact with the newly created object
+	if newDashboard && !hs.accesscontrolService.IsDisabled() {
+		hs.accesscontrolService.ClearUserPermissionCache(c.SignedInUser)
+	}
+
 	// connect library panels for this dashboard after the dashboard is stored and has an ID
 	err = hs.LibraryPanelService.ConnectLibraryPanelsForDashboard(ctx, c.SignedInUser, dashboard)
 	if err != nil {