agent/tcs/handler/handler.go
func ackPublishHealthMetricHandler(timer *time.Timer) func(*ecstcs.AckPublishHealth) {
	return func(*ecstcs.AckPublishHealth) {
		seelog.Debug("Received ACKPublishHealth from tcs")
		timer.Reset(retry.AddJitter(defaultHeartbeatTimeout, defaultHeartbeatJitter))
	}
}
func ackPublishHealthMetricHandler(timer *time.Timer) func(*ecstcs.AckPublishHealth) {
	return func(*ecstcs.AckPublishHealth) {
		seelog.Debug("Received ACKPublishHealth from tcs")
		timer.Reset(retry.AddJitter(defaultHeartbeatTimeout, defaultHeartbeatJitter))
	}
}
// ackPublishHealthMetricHandler consumes the ack message from backend. The backend sends
// the ack each time it processes a health message