RBAC: Add userLogin filter to the permission search endpoint (#81137)

* RBAC: Search add user login filter

* Switch to a userService resolving instead

* Remove unused error

* Fallback to use the cache

* account for userID filter

* Account for the error

* snake case

* Add test cases

* Add api tests

* Fix return on error

* Re-order imports

pkg/services/accesscontrol/accesscontrol.go

@@ -57,6 +57,7 @@ type SearchOptions struct {
 	ActionPrefix string // Needed for the PoC v1, it's probably going to be removed.
 	Action       string
 	Scope        string
+	UserLogin    string    // Login for which to return information, if none is specified information is returned for all users.
 	UserID       int64     // ID for the user for which to return information, if none is specified information is returned for all users.
 	wildcards    Wildcards // private field computed based on the Scope
 }
@@ -76,6 +77,19 @@ func (s *SearchOptions) Wildcards() []string {
 	return s.wildcards
 }
 
+func (s *SearchOptions) ResolveUserLogin(ctx context.Context, userSvc user.Service) error {
+	if s.UserLogin == "" {
+		return nil
+	}
+	// Resolve userLogin -> userID
+	dbUsr, err := userSvc.GetByLogin(ctx, &user.GetUserByLoginQuery{LoginOrEmail: s.UserLogin})
+	if err != nil {
+		return err
+	}
+	s.UserID = dbUsr.ID
+	return nil
+}
+
 type SyncUserRolesCommand struct {
 	UserID int64
 	// name of roles the user should have