From 9052914cf16ea7f4812cfc9cb40132a626f22a3f Mon Sep 17 00:00:00 2001
From: Emily Ye <emilyye@google.com>
Date: Fri, 17 May 2019 13:50:15 -0700
Subject: [PATCH] diff suppress empty value for start time of day

---
 .../resources/resource_storage_transfer_job.go    | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/third_party/terraform/resources/resource_storage_transfer_job.go b/third_party/terraform/resources/resource_storage_transfer_job.go
index 6526c58a82ee..e9a5b15372b5 100644
--- a/third_party/terraform/resources/resource_storage_transfer_job.go
+++ b/third_party/terraform/resources/resource_storage_transfer_job.go
@@ -96,11 +96,12 @@ func resourceStorageTransferJob() *schema.Resource {
 							Elem:     dateObjectSchema(),
 						},
 						"start_time_of_day": {
-							Type:     schema.TypeList,
-							Optional: true,
-							ForceNew: true,
-							MaxItems: 1,
-							Elem:     timeObjectSchema(),
+							Type:             schema.TypeList,
+							Optional:         true,
+							ForceNew:         true,
+							MaxItems:         1,
+							Elem:             timeObjectSchema(),
+							DiffSuppressFunc: diffSuppressEmptyStartTimeOfDay,
 						},
 					},
 				},
@@ -301,6 +302,10 @@ func httpDataSchema() *schema.Resource {
 	}
 }
 
+func diffSuppressEmptyStartTimeOfDay(k, old, new string, d *schema.ResourceData) bool {
+	return k == "schedule.0.start_time_of_day.#" && old == "1" && new == "0"
+}
+
 func resourceStorageTransferJobCreate(d *schema.ResourceData, meta interface{}) error {
 	config := meta.(*Config)