From 8d9a3d54302cd1c9584073e144d819be35fe9ed3 Mon Sep 17 00:00:00 2001
From: Denis Arh <denis.arh@gmail.com>
Date: Tue, 31 Aug 2021 06:25:33 +0200
Subject: [PATCH] Skip empty values on when parsing interval/timestamp trigger
 constraints

---
 pkg/scheduler/helpers.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkg/scheduler/helpers.go b/pkg/scheduler/helpers.go
index b52611af7..20094c437 100644
--- a/pkg/scheduler/helpers.go
+++ b/pkg/scheduler/helpers.go
@@ -32,6 +32,11 @@ func onInterval(now time.Time, ii ...string) (bool, error) {
 
 	// At least one of the given expressions should match
 	for _, i := range ii {
+		if len(i) == 0 {
+			// skip empty values
+			continue
+		}
+
 		exp, err := cronexpr.Parse(i)
 		if err != nil {
 			return false, err
@@ -61,6 +66,11 @@ func onTimestamp(now time.Time, tt ...string) (bool, error) {
 	)
 
 	for _, t := range tt {
+		if len(t) == 0 {
+			// skip empty values
+			continue
+		}
+
 		ts, err := time.Parse(time.RFC3339, t)
 		if err != nil {
 			return false, err