From f5f3e28b23a9ac41004a0ce790a948c52a3ac379 Mon Sep 17 00:00:00 2001
From: Cory Bennett <cbennett@netflix.com>
Date: Tue, 2 Aug 2016 22:36:51 -0700
Subject: [PATCH] ignore empty json fields when processing templates

---
 util.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/util.go b/util.go
index 77a5935d..927d56d2 100644
--- a/util.go
+++ b/util.go
@@ -322,6 +322,9 @@ func yamlFixup(data interface{}) (interface{}, error) {
 				return nil, err
 			}
 		}
+		if len(copy) == 0 {
+			return nil, nil
+		}
 		return copy, nil
 	case map[string]interface{}:
 		copy := make(map[string]interface{})
@@ -332,6 +335,9 @@ func yamlFixup(data interface{}) (interface{}, error) {
 				copy[k] = fixed
 			}
 		}
+		if len(copy) == 0 {
+			return nil, nil
+		}
 		return copy, nil
 	case []interface{}:
 		copy := make([]interface{}, 0, len(d))
@@ -342,6 +348,9 @@ func yamlFixup(data interface{}) (interface{}, error) {
 				copy = append(copy, fixed)
 			}
 		}
+		if len(copy) == 0 {
+			return nil, nil
+		}
 		return copy, nil
 	case string:
 		if d == "" || d == "\n" {