feat: Enhance Timer to be used for timed loops beyond bootstrapping

bootstrap/startup/timer.go

@@ -39,11 +39,30 @@ func NewStartUpTimer(serviceKey string) Timer {
 	}
 }
 
+// NewTimer is a factory method that returns a Timer initialized with passed in duration and interval.
+func NewTimer(duration int, interval int) Timer {
+	return Timer{
+		startTime: time.Now(),
+		duration:  time.Second * time.Duration(duration),
+		interval:  time.Second * time.Duration(interval),
+	}
+}
+
 // SinceAsString returns the time since the timer was created as a string.
 func (t Timer) SinceAsString() string {
 	return time.Since(t.startTime).String()
 }
 
+// RemainingAsString returns the time remaining on the timer as a string.
+func (t Timer) RemainingAsString() string {
+
+	remaining := t.duration - time.Since(t.startTime)
+	if remaining < 0 {
+		remaining = 0
+	}
+	return remaining.String()
+}
+
 // HasNotElapsed returns whether or not the duration specified during construction has elapsed.
 func (t Timer) HasNotElapsed() bool {
 	return time.Now().Before(t.startTime.Add(t.duration))