K8s: Search fallback: Support all sort by methods (#100776)

pkg/services/search/sort/sorting.go

@@ -0,0 +1,68 @@
+package sort
+
+import (
+	"sort"
+
+	"github.com/grafana/grafana/pkg/services/search/model"
+	"github.com/grafana/grafana/pkg/services/sqlstore/searchstore"
+)
+
+// sort is separated into its own service to allow the dashboard service to use it in the k8s
+// fallback (see pkg/registry/apis/dashboard/legacysearcher/search_client.go), since search
+// has a direct dependency on the dashboard service (and thus would create a circular dependency in wire)
+
+var (
+	SortAlphaAsc = model.SortOption{
+		Name:        "alpha-asc",
+		DisplayName: "Alphabetically (A–Z)",
+		Description: "Sort results in an alphabetically ascending order",
+		Index:       0,
+		Filter: []model.SortOptionFilter{
+			searchstore.TitleSorter{},
+		},
+	}
+	SortAlphaDesc = model.SortOption{
+		Name:        "alpha-desc",
+		DisplayName: "Alphabetically (Z–A)",
+		Description: "Sort results in an alphabetically descending order",
+		Index:       0,
+		Filter: []model.SortOptionFilter{
+			searchstore.TitleSorter{Descending: true},
+		},
+	}
+)
+
+type Service struct {
+	sortOptions map[string]model.SortOption
+}
+
+func ProvideService() Service {
+	return Service{
+		sortOptions: map[string]model.SortOption{
+			SortAlphaAsc.Name:  SortAlphaAsc,
+			SortAlphaDesc.Name: SortAlphaDesc,
+		},
+	}
+}
+
+// RegisterSortOption allows for hooking in more search options from
+// other services.
+func (s *Service) RegisterSortOption(option model.SortOption) {
+	s.sortOptions[option.Name] = option
+}
+
+func (s *Service) SortOptions() []model.SortOption {
+	opts := make([]model.SortOption, 0, len(s.sortOptions))
+	for _, o := range s.sortOptions {
+		opts = append(opts, o)
+	}
+	sort.Slice(opts, func(i, j int) bool {
+		return opts[i].Index < opts[j].Index || (opts[i].Index == opts[j].Index && opts[i].Name < opts[j].Name)
+	})
+	return opts
+}
+
+func (s *Service) GetSortOption(sort string) (model.SortOption, bool) {
+	option, ok := s.sortOptions[sort]
+	return option, ok
+}