/// <summary>
/// Task which is used for scanning pending commands and broadcast to external terminals.
/// </summary>
private void SearchWarehousePendingCommands()
{
while (true)
{
// Task is not allowed to run.
if (!_isTaskRunning)
{
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
// Wait for signal from another thread to start this one.
_manualResetScannerEvent.WaitOne();
try
{
// Message will be built base on the being activated automated warehouse controller.
var message = "";
#region Message construction
// Operating warehouse controller is material.
if (TerminalName.Material.Equals(_terminalSetting.Key))
{
#region Automated warehouse status validation.
// No material warehouse controller has been configured in application setting file.
if (string.IsNullOrEmpty(AutoController.MaterialAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"No material warehouse controller device code has been configured into application setting file. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for 3 secs.
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
// Material auto warehouse controller is offline.
if (!MaterialAutoWarehouseController.IsAutoWarehouseOnline(AutoController.MaterialAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"Material automated warehouse is offline. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for awhile.
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
#endregion
#region Message initialization
try
{
// Find pending material command in database.
var commands = AutoController.FindPendingMaterialCommands();
// Command is not valid.
if (commands == null || commands.Count < 1)
{
//Message.InitiateMessage(DateTime.Now, MessageType.Information,
//$"No pending command has been found. Broadcaster will be restarted in {Setting.CommandScanTaskInterval} milliseconds.");
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
// ProceedIncommingCommand database records.
MaterialAutoWarehouseController.ProcessDataBase(commands, AutoController.MaterialAutoWarehouseDeviceCode, _terminalSetting.Value.Outgoing);
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
catch (Exception exception)
{
Log.Error(exception.Message, exception);
Message.InitiateMessage(DateTime.Now, MessageType.Error, exception.Message);
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
#endregion
}
else if (TerminalName.PreProduct.Equals(_terminalSetting.Key))
{
using (var context = new KCSGDbContext())
using (var unitOfWork = new UnitOfWork(context))
{
// delete off empty command
var preProduct = unitOfWork.PreProductWarehouseCommandRepository.GetMany(
i => i.F50_From.Trim().Equals(""))
.FirstOrDefault();
if (preProduct != null)
{
unitOfWork.PreProductWarehouseCommandRepository.Delete(preProduct);
unitOfWork.Commit();
}
}
#region Automated warehouse status validation.
// No material warehouse controller has been configured in application setting file.
if (string.IsNullOrEmpty(AutoController.PreProductAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"No pre-product warehouse controller device code has been configured into application setting file. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for 3 secs.
Thread.Sleep(3000);
continue;
}
// Material auto warehouse controller is offline.
if (!PreProductAutoWarehouseController.IsAutoWarehouseOnline(AutoController.PreProductAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"Pre-product automated warehouse is offline. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for awhile.
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
#endregion
#region Pre-product initialization
try
{
var commands = AutoController.FindPendingPreProductCommands();
if (commands == null || commands.Count < 1)
{
//Message.InitiateMessage(DateTime.Now, MessageType.Information,
//$"No pending command has been found. Listener will be restarted in {Setting.CommandScanTaskInterval} milliseconds.");
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
// ProceedIncommingCommand messages list.
PreProductAutoWarehouseController.ProceedMessages(commands,
AutoController.PreProductAutoWarehouseDeviceCode, _terminalSetting.Value.Outgoing);
Thread.Sleep(Setting.CommandScanTaskInterval);
}
catch (Exception exception)
{
Log.Error(exception.Message, exception);
Message.InitiateMessage(DateTime.Now, MessageType.Error, exception.Message);
}
#endregion
}
else if (TerminalName.Product.Equals(_terminalSetting.Key))
{
#region Automated warehouse status validation.
// No material warehouse controller has been configured in application setting file.
if (string.IsNullOrEmpty(AutoController.ProductAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"No product warehouse controller device code has been configured into application setting file. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for 3 secs.
Thread.Sleep(3000);
continue;
}
// Material auto warehouse controller is offline.
if (!ProductAutoWarehouseController.IsAutoWarehouseOnline(AutoController.ProductAutoWarehouseDeviceCode))
{
Message.InitiateMessage(DateTime.Now, MessageType.Information,
$"Product automated warehouse is offline. Restart in {Setting.CommandScanTaskInterval} milliseconds.");
// Sleep the thread for awhile.
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
#endregion
#region Products initialization
try
{
// TODO: Disabled it at 2017-05-17 (Consider enable it back)
//var commands = AutoController.FindPendingProductCommands();
//if (commands == null || commands.Count < 1)
//{
// //Message.InitiateMessage(DateTime.Now, MessageType.Information,
// //$"No pending command has been found. Listener will be restarted in {Setting.CommandScanTaskInterval} milliseconds.");
// Thread.Sleep(Setting.CommandScanTaskInterval);
// continue;
//}
//ProductAutoWarehouseController.ProcessDataList(commands,
// AutoController.ProductAutoWarehouseDeviceCode, _terminalSetting.Value.Outgoing);
//Thread.Sleep(Setting.CommandScanTaskInterval);
var command = AutoController.FindPendingProductCommands().FirstOrDefault();
if (command == null)
{
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
ProductAutoWarehouseController.ProcessDataList(new[] { command },
AutoController.ProductAutoWarehouseDeviceCode, _terminalSetting.Value.Outgoing);
Thread.Sleep(Setting.CommandScanTaskInterval);
}
catch (Exception exception)
{
Log.Error(exception.Message, exception);
Message.InitiateMessage(DateTime.Now, MessageType.Error, exception.Message);
}
#endregion
}
else
{
Message.InitiateMessage(DateTime.Now, MessageType.Error,
$"Material, Pre-Product, Product should be selected to broadcast message. Restart message broadcaster in {Setting.CommandScanTaskInterval} milliseconds.");
Thread.Sleep(Setting.CommandScanTaskInterval);
continue;
}
#endregion
}
catch (EntityException entityException)
{
Log.Error(entityException.Message, entityException);
Message.ShowMessageBox(View.FindView(),
"There is something wrong with database. Please check database configuration in configuration file.",
"System Message", MessageBoxButton.OK, MessageBoxImage.Error, MessageBoxResult.OK);
Application.Current.Dispatcher.Invoke(() => { IsTaskRunning = false; });
}
catch (Exception exception)
{
Log.Error(exception.Message, exception);
}
}
}
