public MigrationPlan MigrateFromOverloaded(IEnumerable <Server> targets, IEnumerable <Server> recievers)
{
var migrationPlan = new MigrationPlan();
var targetsCopies = recievers.Select(s => s.Copy())
.OrderBy(s => s.ResourcesCapacity.GetValue())
.ThenBy(s => s.RunningVMs.Count)
.ThenBy(s => s.UsedResources.GetValue() / s.RunningVMs.Count)
.ToList();
var priorityRecievers = targetsCopies.Where(server => server.TurnedOn);
var reserve = targetsCopies.Where(server => !server.TurnedOn);
foreach (var server in targets)
{
var resultNode = _searchEngine.Run(
new MigrationRootNode(
server,
priorityRecievers.ToList(),
reserve.ToList(),
GetInitialValue(priorityRecievers, EvaluateForOverloading),
OverloadedMigrationNode.FromRootNode)
) as MigrationNode;
if (resultNode == null)
{
break;
}
migrationPlan.Add(resultNode, server);
// TODO: reconsider
foreach (var change in resultNode.Changes)
{
var srv = targetsCopies.Find(s => s.Id == change.Reciever.Id);
srv.AsignVM(change.Target);
srv.UsedResources += server.GetMigrationResourceRequirments(srv);
}
}
return(migrationPlan);
}
public MigrationPlan Merge(MigrationPlan other)
{
_planData.AddRange(other._planData);
return(this);
}
