Scheduler uses TTLStore for assumed pods

pkg/util/clock.go

@@ -24,6 +24,7 @@ import (
 // needs to do arbitrary things based on time.
 type Clock interface {
 	Now() time.Time
+	Since(time.Time) time.Duration
 }
 
 // RealClock really calls time.Now()
@@ -34,6 +35,11 @@ func (r RealClock) Now() time.Time {
 	return time.Now()
 }
 
+// Since returns time since the specified timestamp.
+func (r RealClock) Since(ts time.Time) time.Duration {
+	return time.Since(ts)
+}
+
 // FakeClock implements Clock, but returns an arbitary time.
 type FakeClock struct {
 	Time time.Time
@@ -43,3 +49,8 @@ type FakeClock struct {
 func (f *FakeClock) Now() time.Time {
 	return f.Time
 }
+
+// Since returns time since the time in f.
+func (f *FakeClock) Since(ts time.Time) time.Duration {
+	return f.Time.Sub(ts)
+}