// select the node state variable in order
@Override
public IntDomainVar selectVar() {
// ManagedElementSet<VirtualMachine> allVMS =
// pb.getSourceConfiguration().getAllVirtualMachines();
// IntDomainVar[] hosters = new IntDomainVar[allVMS.size()];
// for(int i = 0; i < allVMS.size(); i++) {
// VirtualMachine vm = pb.getVirtualMachine(i);
// hosters[i] = pb.getAssociatedAction(vm).getDemandingSlice().hoster();
// if(hosters[i].isInstantiated()) {
// log.debug("hoster " + i + " instancied " + hosters[i].getVal());
// } else {
// log.debug("hoster " + i + " not instancied ");
// }
// }
for (int i = 0; i < nodes.size(); i++) {
Node n = nodes.get(i);
// future online and future offline should have their state set already
if (!pb.getFutureOnlines().contains(n) && !pb.getFutureOfflines().contains(n)) {
ManageableNodeActionModel action = (ManageableNodeActionModel) pb.getAssociatedAction(n);
log.debug("Node " + n.getName());
log.debug("state instancied " + action.getState().isInstantiated());
// Select the empty nodes first
if (!action.getState().isInstantiated() && pb.getUsedMem(n).isInstantiatedTo(0)) {
log.debug("select node " + n.getName() + " for switch off");
return action.getState();
}
if (pb.getUsedMem(n).isInstantiatedTo(0) && !action.start().isInstantiated()) {
log.debug("select node " + n.getName() + " for start");
return action.start();
}
}
}
return null;
}
