prevent int64 overflow when reading the expiry date of the server config

utils/minmax.go

@@ -34,6 +34,14 @@ func MaxUint64(a, b uint64) uint64 {
 	return a
 }
 
+// MinUint64 returns the maximum of two uint64
+func MinUint64(a, b uint64) uint64 {
+	if a < b {
+		return a
+	}
+	return b
+}
+
 // Min returns the minimum of two Ints
 func Min(a, b int) int {
 	if a < b {

utils/minmax_test.go

@@ -25,6 +25,11 @@ var _ = Describe("Min / Max", func() {
 			Expect(MaxUint64(7, 5)).To(Equal(uint64(7)))
 		})
 
+		It("returns the minimum uint64", func() {
+			Expect(MinUint64(5, 7)).To(Equal(uint64(5)))
+			Expect(MinUint64(7, 5)).To(Equal(uint64(5)))
+		})
+
 		It("returns the maximum int64", func() {
 			Expect(MaxInt64(5, 7)).To(Equal(int64(7)))
 			Expect(MaxInt64(7, 5)).To(Equal(int64(7)))