Feature toggles management: Define get feature toggles api (#72106)

* Feature Toggle Management: Define get feature toggles api

* lint

pkg/setting/setting.go

@@ -551,6 +551,9 @@ type Cfg struct {
 	// This needs to be on the global object since its used in the
 	// sqlstore package and HTTP middlewares.
 	DatabaseInstrumentQueries bool
+
+	// Feature Management Settings
+	FeatureManagement FeatureMgmtSettings
 }
 
 // AddChangePasswordLink returns if login form is disabled or not since
@@ -1236,6 +1239,8 @@ func (cfg *Cfg) Load(args CommandLineArgs) error {
 	logSection := iniFile.Section("log")
 	cfg.UserFacingDefaultError = logSection.Key("user_facing_default_error").MustString("please inspect Grafana server log for details")
 
+	cfg.readFeatureManagementConfig()
+
 	return nil
 }
 

pkg/setting/setting_featuremgmt.go

@@ -0,0 +1,32 @@
+package setting
+
+import (
+	"github.com/grafana/grafana/pkg/util"
+)
+
+type FeatureMgmtSettings struct {
+	HiddenToggles   map[string]struct{}
+	ReadOnlyToggles map[string]struct{}
+}
+
+func (cfg *Cfg) readFeatureManagementConfig() {
+	section := cfg.Raw.Section("feature_management")
+
+	hiddenToggles := make(map[string]struct{})
+	readOnlyToggles := make(map[string]struct{})
+
+	// parse the comma separated list in `hidden_toggles`.
+	hiddenTogglesStr := valueAsString(section, "hidden_toggles", "")
+	for _, feature := range util.SplitString(hiddenTogglesStr) {
+		hiddenToggles[feature] = struct{}{}
+	}
+
+	// parse the comma separated list in `read_only_toggles`.
+	readOnlyTogglesStr := valueAsString(section, "read_only_toggles", "")
+	for _, feature := range util.SplitString(readOnlyTogglesStr) {
+		readOnlyToggles[feature] = struct{}{}
+	}
+
+	cfg.FeatureManagement.HiddenToggles = hiddenToggles
+	cfg.FeatureManagement.ReadOnlyToggles = readOnlyToggles
+}