/// <summary>
/// Invoked when a super-peer gains control over a zone.
/// </summary>
/// <param name="zone">Zone that super peer gained control of.</param>
/// <param name="superPeer">Super peer that gained control.</param>
private void SuperPeerGainedControl(Zone zone, ZoneSuperPeer superPeer)
{
// Is this us thats gained control of a zone?
if (superPeer.ClientID == m_clientID)
{
SuperPeer peer = new SuperPeer(this, superPeer.ID, superPeer.ZoneID);
peer.Initialize();
m_superPeers.Add(peer);
Logger.Info("Gained control of zone #{0} as SuperPeer #{0}", LoggerVerboseLevel.High, zone.ID, superPeer.ID);
}
foreach (SuperPeer peer in m_superPeers)
{
peer.SuperPeerGainedControl(zone, superPeer);
}
}
/// <summary>
/// Invoked when a super-peer lose's control over a zone.
/// </summary>
/// <param name="zone">Zone that super peer lost control of.</param>
/// <param name="superPeer">Super peer that lost control.</param>
private void SuperPeerLostControl(Zone zone, ZoneSuperPeer superPeer)
{
// Is this us thats gained control of a zone?
if (superPeer.ClientID == m_clientID)
{
foreach (SuperPeer peer in m_superPeers.ToList())
{
if (peer.ID == superPeer.ID)
{
peer.Deinitialize();
break;
}
}
Logger.Info("Lost control of zone #{0} as SuperPeer #{0}", LoggerVerboseLevel.High, superPeer.ZoneID, superPeer.ID);
}
// Is this a superpeer for the zone we are inside of?
// If so, any superpeers we are hosting, should start serializing now!
foreach (SuperPeer peer in m_superPeers)
{
peer.SuperPeerLostControl(zone, superPeer);
}
}
/// <summary>
/// Converts a packet representation of this zone grid into the zone grid.
/// </summary>
/// <param name="packet">Packet to convert.</param>
public void FromPacket(ZoneGridPacket packet)
{
List<ZoneSuperPeer> old_superpeers = new List<ZoneSuperPeer>();
List<ZoneSuperPeer> new_superpeers = new List<ZoneSuperPeer>();
List<Zone> old_zones = new List<Zone>(m_zones.Values);
// Make a full list of all super peers that currently exist.
foreach (Zone zone in m_zones.Values)
{
old_superpeers.AddRange(zone.SuperPeers);
}
// Dispose of general stuff.
m_zones.Clear();
m_gained_superpeers.Clear();
m_lost_superpeers.Clear();
// Rebuild the zone grid.
foreach (ZoneGridPacketZoneInfo zoneInfo in packet.Zones)
{
Zone zone = null;
foreach (Zone z in old_zones)
{
if (z.ID == zoneInfo.ID)
{
zone = z;
zone.ParentID = zoneInfo.ParentID;
zone.ChildZone1ID = zoneInfo.ChildZone1ID;
zone.ChildZone2ID = zoneInfo.ChildZone2ID;
zone.Parent = null;
zone.ChildZone1 = null;
zone.ChildZone2 = null;
zone.SplitOrientation = zoneInfo.SplitOrientation;
break;
}
}
if (zone == null)
{
zone = new Zone(zoneInfo.ID, zoneInfo.ParentID, zoneInfo.ChildZone1ID, zoneInfo.ChildZone2ID, zoneInfo.SplitOrientation);
}
List<ZoneSuperPeer> oldZoneSuperPeers = new List<ZoneSuperPeer>(zone.SuperPeers);
zone.SuperPeers.Clear();
foreach (ZoneGridPacketSuperPeerInfo peerInfo in zoneInfo.SuperPeers)
{
ZoneSuperPeer peer = null;
foreach (ZoneSuperPeer p in oldZoneSuperPeers)
{
if (p.ID == peerInfo.ID)
{
peer = p;
break;
}
}
if (peer == null)
{
peer = new ZoneSuperPeer();
}
peer.ID = peerInfo.ID;
peer.ZoneID = peerInfo.ZoneID;
peer.ClientID = peerInfo.ClientID;
peer.ClientIPAddress = peerInfo.ClientIPAddress;
peer.ClientListenPort = peerInfo.ClientListenPort;
zone.SuperPeers.Add(peer);
}
new_superpeers.AddRange(zone.SuperPeers);
AddZone(zone);
}
// Calculate which super-peers are new.
foreach (ZoneSuperPeer peer in old_superpeers)
{
bool found = false;
foreach (ZoneSuperPeer peer2 in new_superpeers)
{
if (peer.ZoneID == peer2.ZoneID &&
peer.ClientID == peer2.ClientID)
{
found = true;
break;
}
}
if (found == false)
{
m_lost_superpeers.Add(peer);
}
}
// Calculate which super-peers have been list.
foreach (ZoneSuperPeer peer in new_superpeers)
{
bool found = false;
foreach (ZoneSuperPeer peer2 in old_superpeers)
{
if (peer.ZoneID == peer2.ZoneID &&
peer.ClientID == peer2.ClientID)
{
found = true;
break;
}
}
if (found == false)
{
m_gained_superpeers.Add(peer);
}
}
}
/// <summary>
/// Returns true if we are registered to the given zone super peer.
/// </summary>
/// <param name="id">ID of zone super peer to check.</param>
/// <returns>True if we are registered to it.</returns>
public bool RegisteredToZoneSuperPeer(ZoneSuperPeer peer)
{
foreach (ZoneSuperPeer p in m_registeredSuperPeers)
{
if (p.ID == peer.ID)
{
return true;
}
}
return false;
}
/// <summary>
/// Loads zoen super-peers from the database.
/// </summary>
private void LoadZoneSuperPeers()
{
DBConnection db = m_databaseConnection;
DBResults results = null;
results = db.Query("SELECT id, zone_id, client_id FROM {0}",
Settings.DB_TABLE_ZONE_SUPERPEERS);
// Clear out the zone grid.
foreach (Zone zone in m_zoneGrid.Zones)
{
zone.SuperPeers.Clear();
}
// Add new super peers.
for (int i = 0; i < results.RowsAffected; i++)
{
DBRow row = results[i];
ZoneSuperPeer superPeer = new ZoneSuperPeer();
superPeer.ID = (int)row["id"];
superPeer.ZoneID = (int)row["zone_id"];
superPeer.ClientID = (int)row["client_id"];
Zone zone = m_zoneGrid.GetZoneByID(superPeer.ZoneID);
if (zone != null)
{
zone.SuperPeers.Add(superPeer);
}
}
}
/// <summary>
/// Invoked to given a client super-peer level control over a zone.
/// </summary>
/// <param name="zone">Zone to give control over.</param>
/// <param name="client_id">ID of client to be given control.</param>
internal void SuperPeerGainControl(Zone zone, int client_id)
{
if (m_isMaster == false)
{
return;
}
// Check zone is valid.
if (zone == null)
{
return;
}
// See if we already have control.
foreach (ZoneSuperPeer peer in zone.SuperPeers)
{
if (peer.ClientID == client_id)
{
return;
}
}
// Give client control.
ZoneSuperPeer new_peer = new ZoneSuperPeer();
new_peer.ClientID = client_id;
new_peer.ZoneID = zone.ID;
// Get connection address for client.
DBResults results = m_databaseConnection.Query(@"SELECT
`ip_address`,
`listen_port`
FROM
{0}
WHERE
`id`={1}",
Settings.DB_TABLE_ACTIVE_CLIENTS,
client_id);
if (results.RowsAffected > 0)
{
new_peer.ClientIPAddress = results[0]["ip_address"].ToString();
new_peer.ClientListenPort = (int)results[0]["listen_port"];
}
else
{
Logger.Error("Attempt to give control of zone (id={1}) to client that dosen't exist in database (id={0}).", LoggerVerboseLevel.Normal, client_id, zone.ID);
}
zone.SuperPeers.Add(new_peer);
Logger.Info("Client #{0} has taken control of Zone #{1}. {2} SuperPeers now controlling zone.", LoggerVerboseLevel.High, client_id, zone.ID, zone.SuperPeers.Count);
}
/// <summary>
/// Loads information about which super peers control which zones.
/// </summary>
private void LoadZoneSuperPeers()
{
DBResults results = null;
results = m_databaseConnection.Query(@"SELECT
peers.`id`,
peers.`zone_id`,
peers.`client_id`,
clients.`ip_address`,
clients.`listen_port`
FROM
{0} AS peers
JOIN
{1} AS clients
ON
peers.`client_id` = clients.`id`",
Settings.DB_TABLE_ZONE_SUPERPEERS,
Settings.DB_TABLE_ACTIVE_CLIENTS);
for (int i = 0; i < results.RowsAffected; i++)
{
int id = (int)results[i]["id"];
int zone_id = (int)results[i]["zone_id"];
int client_id = (int)results[i]["client_id"];
string ip_address = results[i]["ip_address"].ToString();
int listen_port = (int)results[i]["listen_port"];
Zone zone = m_zoneGrid.GetZoneByID(zone_id);
if (zone == null)
{
continue;
}
ZoneSuperPeer superPeer = new ZoneSuperPeer();
superPeer.ID = id;
superPeer.ZoneID = zone_id;
superPeer.ClientID = client_id;
superPeer.ClientIPAddress = ip_address;
superPeer.ClientListenPort = listen_port;
//SuperPeerGainControl(zone, superPeer);
zone.SuperPeers.Add(superPeer);
}
}
/// <summary>
/// Invoked when a super-peer lose's control over a zone.
/// </summary>
/// <param name="zone">Zone that super peer lost control of.</param>
/// <param name="superPeer">Super peer that lost control.</param>
internal void SuperPeerLostControl(Zone zone, ZoneSuperPeer superPeer)
{
// Peer from same zone was lost, we should try and serialize our state now.
if (superPeer.ZoneID == m_zone_id)
{
foreach (SuperPeerToClientConnection conn in m_registeredPeers)
{
conn.StoreAccount("SuperPeer In Zone Lost Control, SuperPeers="+zone.SuperPeers.Count+" Peers="+m_registeredPeers.Count);
}
}
}
/// <summary>
/// Invoked when a super-peer gains control over a zone.
/// </summary>
/// <param name="zone">Zone that super peer gained control of.</param>
/// <param name="superPeer">Super peer that gained control.</param>
internal void SuperPeerGainedControl(Zone zone, ZoneSuperPeer superPeer)
{
}