OpenFeature: Add config setting to disable API (#108620)

* Add config option to disable ofrep api

* Apply review feedback

conf/defaults.ini

@@ -2016,6 +2016,7 @@ enable =
 
 [feature_toggles.openfeature]
 # This is EXPERIMENTAL. Please, do not use this section
+enable_api = true
 provider = static
 
 [feature_toggles.openfeature.context]

pkg/registry/apis/ofrep/register.go

@@ -61,9 +61,12 @@ func NewAPIBuilder(providerType string, url *url.URL, insecure bool, caFile stri
 }
 
 func RegisterAPIService(apiregistration builder.APIRegistrar, cfg *setting.Cfg) (*APIBuilder, error) {
+	if !cfg.OpenFeature.APIEnabled {
+		return nil, nil
+	}
+
 	var staticEvaluator featuremgmt.StaticFlagEvaluator //  No static evaluator needed for non-static provider
 	var err error
-
 	if cfg.OpenFeature.ProviderType == setting.StaticProviderType {
 		staticEvaluator, err = featuremgmt.CreateStaticEvaluator(cfg)
 		if err != nil {

pkg/setting/setting_openfeature.go

@@ -11,6 +11,7 @@ const (
 )
 
 type OpenFeatureSettings struct {
+	APIEnabled   bool
 	ProviderType string
 	URL          *url.URL
 	TargetingKey string
@@ -21,6 +22,7 @@ func (cfg *Cfg) readOpenFeatureSettings() error {
 	cfg.OpenFeature = OpenFeatureSettings{}
 
 	config := cfg.Raw.Section("feature_toggles.openfeature")
+	cfg.OpenFeature.APIEnabled = config.Key("enable_api").MustBool(true)
 	cfg.OpenFeature.ProviderType = config.Key("provider").MustString(StaticProviderType)
 	cfg.OpenFeature.TargetingKey = config.Key("targetingKey").MustString(cfg.AppURL)