/**
* Returns the given set of resources after expansion (by resolution of blocks, for instance) by
* the kernel.
*
* @param resources The set of resources to be expanded.
* @return The given set of resources after expansion (by resolution of blocks, for instance) by
* the kernel.
*/
private Set<TCSResource> expandResources(Set<TCSResource> resources) {
assert resources != null;
// Build a set of references
Set<TCSResourceReference> refs = new HashSet<>();
for (TCSResource curResource : resources) {
refs.add(curResource.getReference());
}
// Let the kernel expand the resources for us.
try {
Set<TCSResource> result = localKernel.expandResources(refs);
log.fine("Set " + resources + " expanded to " + result);
return result;
} catch (ObjectUnknownException exc) {
throw new IllegalStateException("Unexpected exception", exc);
}
}
@Override
public void allocateNow(ResourceUser resourceUser, Set<TCSResource> resources)
throws ResourceAllocationException {
Objects.requireNonNull(resourceUser, "resourceUser is null");
Objects.requireNonNull(resources, "resources is null");
synchronized (reservations) {
// Check if all resources are available.
final Set<TCSResource> availableResources = new HashSet<>();
for (TCSResource curResource : resources) {
ReservationEntry entry = getReservationEntry(curResource);
if (!entry.isFree() && !entry.getResourceUser().equals(resourceUser)) {
log.severe("Resource unavailable: " + curResource.getName());
// XXX DO something about it?!
} else {
availableResources.add(curResource);
}
}
// Allocate all requested resources that are available.
for (TCSResource curResource : availableResources) {
getReservationEntry(curResource).allocate(resourceUser);
}
}
}
