public DtoDownloadConnectionResult CreateDownloadConnection(DtoDownloadConRequest conRequest)
{
var result = new DtoDownloadConnectionResult();
var guid = ConfigurationManager.AppSettings["ComServerUniqueId"];
var thisComServer = new ServiceClientComServer().GetServerByGuid(guid);
if (thisComServer == null)
{
Logger.Error($"Com Server With Guid {guid} Not Found");
result.ErrorMessage = $"Com Server With Guid {guid} Not Found";
return(result);
}
if (!int.TryParse(thisComServer.EmMaxClients.ToString(), out var maxClientConnections))
{
result.ErrorMessage = "Could Not Determine The MaxClientConnections For The Com Server: " +
conRequest.ComServer;
return(result);
}
if (maxClientConnections == 0) // zero is unlimited
{
result.Success = true;
result.QueueIsFull = false;
return(result);
}
var client = new ServiceComputer().GetByGuid(conRequest.ComputerGuid);
if (client == null)
{
result.ErrorMessage = "Could Not Find Computer With Guid: " + RequestContext.Principal.Identity.Name;
return(result);
}
var serviceCurrentDownloads = new ServiceCurrentDownload();
var currentConnections = serviceCurrentDownloads.TotalCount(conRequest.ComServer);
var activeClient = serviceCurrentDownloads.GetByClientId(client.Id, conRequest.ComServer);
if (activeClient == null && (currentConnections >= maxClientConnections))
{
var activeCountAfterExpire = serviceCurrentDownloads.ExpireOldConnections();
if (activeCountAfterExpire >= maxClientConnections)
{
result.Success = true;
result.QueueIsFull = true;
return(result);
}
}
//add new download connection for this client
if (activeClient == null)
{
var currentDownload = new EntityCurrentDownload();
currentDownload.ComputerId = client.Id;
currentDownload.ComServer = conRequest.ComServer;
serviceCurrentDownloads.Add(currentDownload);
result.Success = true;
result.QueueIsFull = false;
}
//update time for existing download connection
else
{
activeClient.LastRequestTimeLocal = DateTime.Now;
serviceCurrentDownloads.Update(activeClient);
result.Success = true;
result.QueueIsFull = false;
}
return(result);
}