do not fail when scheduled event does not have end date (aws#182)

* do not fail when scheduled event does not have end date. It's nice-to-have information only.

* fix unit-test for scheduled events

pkg/interruptionevent/scheduled-event.go

@@ -66,11 +66,12 @@ func checkForScheduledEvents(imds *ec2metadata.Service) ([]InterruptionEvent, er
 		}
 		notBefore, err := time.Parse(scheduledEventDateFormat, scheduledEvent.NotBefore)
 		if err != nil {
-			return nil, fmt.Errorf("Unable to parsed scheduled event start time: %w", err)
+			return nil, fmt.Errorf("Unable to parse scheduled event start time: %w", err)
 		}
 		notAfter, err := time.Parse(scheduledEventDateFormat, scheduledEvent.NotAfter)
 		if err != nil {
-			return nil, fmt.Errorf("Unable to parsed scheduled event end time: %w", err)
+			notAfter = notBefore
+			log.Log().Msgf("Unable to parse scheduled event end time, continuing: %v", err)
 		}
 		events = append(events, InterruptionEvent{
 			EventID:      scheduledEvent.EventID,

pkg/interruptionevent/scheduled-event_test.go

@@ -231,6 +231,26 @@ func TestMonitorForScheduledEventsEndTimeParseFail(t *testing.T) {
 	cancelChan := make(chan interruptionevent.InterruptionEvent)
 	imds := ec2metadata.New(server.URL, 1)
 
+	go func() {
+		result := <-drainChan
+		h.Equals(t, scheduledEventId, result.EventID)
+		h.Equals(t, interruptionevent.ScheduledEventKind, result.Kind)
+		h.Equals(t, scheduledEventState, result.State)
+		h.Equals(t, expScheduledEventStartTimeFmt, result.StartTime.String())
+		h.Equals(t, expScheduledEventStartTimeFmt, result.EndTime.String())
+
+		h.Assert(t, strings.Contains(result.Description, scheduledEventCode),
+			"Expected description to contain \""+scheduledEventCode+
+				"\"but received \""+result.Description+"\"")
+		h.Assert(t, strings.Contains(result.Description, scheduledEventStartTime),
+			"Expected description to contain \""+scheduledEventStartTime+
+				"\"but received \""+result.Description+"\"")
+		h.Assert(t, strings.Contains(result.Description, scheduledEventDescription),
+			"Expected description to contain \""+scheduledEventDescription+
+				"\"but received \""+result.Description+"\"")
+
+	}()
+
 	err := interruptionevent.MonitorForScheduledEvents(drainChan, cancelChan, imds)
-	h.Assert(t, err != nil, "Failed to return error when failed to parse end time")
+	h.Ok(t, err)
 }