K8s/Dashboards: Fix dashboard list and add tests (#91523)

pkg/registry/apis/dashboard/legacy/queries.go

@@ -0,0 +1,38 @@
+package legacy
+
+import (
+	"embed"
+	"fmt"
+	"text/template"
+
+	"github.com/grafana/grafana/pkg/storage/unified/sql/sqltemplate"
+)
+
+// Templates setup.
+var (
+	//go:embed *.sql
+	sqlTemplatesFS embed.FS
+
+	sqlTemplates = template.Must(template.New("sql").ParseFS(sqlTemplatesFS, `*.sql`))
+)
+
+func mustTemplate(filename string) *template.Template {
+	if t := sqlTemplates.Lookup(filename); t != nil {
+		return t
+	}
+	panic(fmt.Sprintf("template file not found: %s", filename))
+}
+
+// Templates.
+var (
+	sqlQueryDashboards = mustTemplate("query_dashboards.sql")
+)
+
+type sqlQuery struct {
+	*sqltemplate.SQLTemplate
+	Query *DashboardQuery
+}
+
+func (r sqlQuery) Validate() error {
+	return nil // TODO
+}