feat: ABAC support for /api/enforce endpoint (#2660)

util/json.go

@@ -14,7 +14,10 @@
 
 package util
 
-import "encoding/json"
+import (
+	"encoding/json"
+	"reflect"
+)
 
 func StructToJson(v interface{}) string {
 	data, err := json.Marshal(v)
@@ -37,3 +40,30 @@ func StructToJsonFormatted(v interface{}) string {
 func JsonToStruct(data string, v interface{}) error {
 	return json.Unmarshal([]byte(data), v)
 }
+
+func TryJsonToAnonymousStruct(j string) (interface{}, error) {
+	var data map[string]interface{}
+	if err := json.Unmarshal([]byte(j), &data); err != nil {
+		return nil, err
+	}
+
+	// Create a slice of StructFields
+	fields := make([]reflect.StructField, 0, len(data))
+	for k, v := range data {
+		fields = append(fields, reflect.StructField{
+			Name: k,
+			Type: reflect.TypeOf(v),
+		})
+	}
+
+	// Create the struct type
+	t := reflect.StructOf(fields)
+
+	// Unmarshal again, this time to the new struct type
+	val := reflect.New(t)
+	i := val.Interface()
+	if err := json.Unmarshal([]byte(j), &i); err != nil {
+		return nil, err
+	}
+	return i, nil
+}