/// <summary>
/// Subscribes a client to a tile
/// </summary>
public static void SubscribeTile(DTSession session, DynamicTileTarget target, int token)
{
lock (subscriptions)
{
subscriptions.Add(new TileSubscription
{
session = session,
target = target,
token = token
});
}
}
/// <summary>
/// Sends events to all subscribed clients
/// </summary>
/// <param name="target"></param>
/// <param name="url"></param>
public static void SendEvent(DynamicTileTarget target, string url)
{
//Find targets
List <TileSubscription> targets;
lock (subscriptions)
targets = subscriptions.Where(x => x.target.Compare(target)).ToList();
//Send targets
foreach (var t in targets)
{
t.session.SendTileLoadMessage(t.target.map_id, t.token, url);
}
}
/// <summary>
/// Called when an updated tile is needed
/// </summary>
public bool RequestImage(DynamicTileTarget target, bool highPriority, DbServer sdata)
{
//Check if any servers exist
if (servers.Count == 0)
{
return(false);
}
//Loop through servers and find server with the least number of requests pending
int min = int.MaxValue;
BuilderServer server = null;
lock (servers)
{
foreach (var s in servers)
{
if (s.pending.Count < min)
{
min = s.pending.Count;
server = s;
}
}
}
//If no servers were found, return false
if (server == null)
{
return(false);
}
//Add this tile to the list
server.ProcessTile(new DynamicTileBuilderRequest
{
highPriority = highPriority,
target = target,
structure_revision_id = sdata.revision_id_structures
});
return(true);
}