WTF-986 Extract the reflection bits into a Reflective package

Signed-off-by: Chris Cummer <chriscummer@me.com>

utils/reflective.go

@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// Reflective is a convenience wrapper for objects that makes it possible to
+// extract property values from the object by property name
+type Reflective struct{}
+
+// StringValueForProperty returns a string value for the given property
+// If the property doesn't exist, it returns an error
+func (ref *Reflective) StringValueForProperty(propName string) (string, error) {
+	v := reflect.ValueOf(ref)
+	refVal := reflect.Indirect(v).FieldByName(propName)
+
+	if !refVal.IsValid() {
+		return "", fmt.Errorf("invalid property name: %s", propName)
+	}
+
+	strVal := fmt.Sprintf("%v", refVal)
+
+	return strVal, nil
+}