@Override
public Optional<Reservation> lookup(final NodeUrn nodeUrn, final DateTime timestamp) {
log.trace("ReservationCacheImpl.lookup({}, {})", nodeUrn, timestamp);
checkRunning();
synchronized (reservationsByNodeUrn) {
final List<CacheItem<Reservation>> entry = reservationsByNodeUrn.get(nodeUrn);
if (entry == null) {
log.trace("ReservationManagerImpl.lookup() CACHE MISS");
return Optional.absent();
}
for (CacheItem<Reservation> item : entry) {
final Interval effectiveInterval;
final Reservation reservation = item.get();
final DateTime reservationStart = reservation.getInterval().getStart();
final DateTime reservationCancellation = reservation.getCancelled();
if (reservationCancellation != null) {
if (reservationCancellation.isBefore(reservationStart)) {
continue;
} else {
effectiveInterval = new Interval(reservationStart, reservationCancellation);
}
} else {
effectiveInterval = reservation.getInterval();
}
if (effectiveInterval.contains(timestamp)) {
if (!item.isOutdated()) {
item.touch();
log.trace("ReservationManagerImpl.lookup() CACHE HIT");
return Optional.of(reservation);
}
}
}
}
return Optional.absent();
}
