public override double ComputeCost()
{
double result = 0;
double transactionalCost = CostModel.GetSecondaryTransactionalCost(numberOfReads);
double syncCost = CostModel.GetSyncCost(numberOfWrites, ConstPool.DEFAULT_SYNC_INTERVAL);
double StorageCost = CostModel.GetStorageCost(ClientRegistry.GetMainPrimaryContainer(Configuration.Name));
result = transactionalCost + syncCost + StorageCost;
return(result);
}
public override double ComputeCost()
{
double result = 0;
DowngradePrimary p = new DowngradePrimary(Configuration.Name, ServerName, 0, null, ConfigurationActionSource.Constraint, numberOfReads, numberOfWrites);
if (Configuration.SecondaryServers.Contains(ServerName))
{
//all primaries will become secondary,
result = Configuration.PrimaryServers.Count * p.ComputeCost();
//a secondary will become primary:
int secondarySyncPeriod = Configuration.GetSyncPeriod(ServerName);
result += CostModel.GetPrimaryTransactionalCost(numberOfReads, numberOfWrites) - (CostModel.GetSecondaryTransactionalCost(numberOfReads) + CostModel.GetSyncCost(numberOfWrites, secondarySyncPeriod));
}
else if (Configuration.PrimaryServers.Contains(ServerName))
{
//all primaries except one will become secondary
result = (Configuration.PrimaryServers.Count - 1) * p.ComputeCost();
}
else
{
// all primaries will become secondary
result = Configuration.PrimaryServers.Count * p.ComputeCost();
//one non-replica becomes primary
result += CostModel.GetPrimaryTransactionalCost(numberOfReads, numberOfWrites) + CostModel.GetStorageCost(ClientRegistry.GetMainPrimaryContainer(Configuration.Name));
}
return(result);
}
public override double ComputeCost()
{
double result = 0;
if (NumberOfAddingReplica() == 0)
{
int secondarySyncPeriod = Configuration.GetSyncPeriod(ServerName);
result = CostModel.GetPrimaryTransactionalCost(numberOfReads, numberOfWrites) - (CostModel.GetSecondaryTransactionalCost(numberOfReads) + CostModel.GetSyncCost(numberOfWrites, secondarySyncPeriod));
}
else
{
result = CostModel.GetPrimaryTransactionalCost(numberOfReads, numberOfWrites) + CostModel.GetStorageCost(ClientRegistry.GetMainPrimaryContainer(Configuration.Name));
}
return(result);
}