Introduce service accounts and bootstrap tokens (#22)

internal/structpath/structpath.go

@@ -0,0 +1,31 @@
+package structpath
+
+import (
+	"reflect"
+	"strings"
+)
+
+func Lookup(target interface{}, path []string) (s string, ok bool) {
+	currentValue := reflect.ValueOf(target)
+
+	for _, pathElement := range path {
+		pathElement := pathElement
+
+		field := currentValue.FieldByNameFunc(func(fieldName string) bool {
+			return strings.EqualFold(fieldName, pathElement)
+		})
+
+		if !field.IsValid() {
+			return "", false
+		}
+
+		currentValue = field
+	}
+
+	result, ok := currentValue.Interface().(string)
+	if !ok {
+		return "", false
+	}
+
+	return result, true
+}