/// <summary>
/// Load balancing algorithm is using this function to update the snapshot after its done
/// </summary>
/// <param name="snapshot"></param>
public void updateMachineData(Dictionary <string, ZNodesDataStructures.MachineNode> snapshot)
{
Dictionary <String, ZNodesDataStructures.MachineNode> oldMachineData = new Dictionary <string, ZNodesDataStructures.MachineNode>(tree.Machines);
calculatedSnapshot = snapshot; // TODO: remove this someday, (funny, huh ?)
// Update Machines local tree
foreach (var machine in snapshot)
{
var currentMachineRecord = machine.Value;
var previousMachineValue = tree.Machines[machine.Key];
bool updateZKTree = false;
if (machine.Key == MachineName)
{
updateZKTree = true;
}
if (updateZKTree)
{
zk.SetData(id, currentMachineRecord);
}
tree.Machines[machine.Key] = currentMachineRecord;
var addPrimaries = currentMachineRecord.primaryOf.Except(previousMachineValue.primaryOf);
var removePrimaries = previousMachineValue.primaryOf.Except(currentMachineRecord.primaryOf);
var addBackup = currentMachineRecord.backsUp.Except(previousMachineValue.backsUp);
var removeBackup = previousMachineValue.backsUp.Except(currentMachineRecord.backsUp);
foreach (var pToAdd in addPrimaries)
{
ZNodesDataStructures.SellerNode primaryRecord = new ZNodesDataStructures.SellerNode()
{
machineName = machine.Key,
role = ZNodesDataStructures.SellerNode.NodeRole.Main,
uri = currentMachineRecord.uri,
version = -1
};
tree.SetPrimaryOf(pToAdd, primaryRecord);
if (updateZKTree)
{
zk.Create(SellersPath + "/" + pToAdd + "/" + machine.Key, primaryRecord, Ids.OPEN_ACL_UNSAFE, CreateMode.Ephemeral);
}
}
foreach (var pToRemove in removePrimaries)
{
tree.RemovePrimaryOf(pToRemove, machine.Key);
if (updateZKTree)
{
zk.Delete(SellersPath + "/" + pToRemove + "/" + machine.Key);
}
}
foreach (var bToAdd in addBackup)
{
ZNodesDataStructures.SellerNode primaryRecord = new ZNodesDataStructures.SellerNode()
{
machineName = machine.Key,
role = ZNodesDataStructures.SellerNode.NodeRole.Backup,
uri = currentMachineRecord.uri,
version = -1
};
tree.SetBackupOf(bToAdd, primaryRecord);
if (updateZKTree)
{
zk.Create(SellersPath + "/" + bToAdd + "/" + machine.Key, primaryRecord, Ids.OPEN_ACL_UNSAFE, CreateMode.Ephemeral);
}
}
foreach (var bToRemove in removeBackup)
{
tree.RemoveBackupOf(bToRemove, machine.Key);
if (updateZKTree)
{
zk.Delete(SellersPath + "/" + bToRemove + "/" + machine.Key);
}
}
//tree.Machines[machine.Key] = machine.Value;
}
// STOP HERE
}
