public void Cancel(Guid taskId)
{
if (CurrentTasks.ContainsKey(taskId))
{
var ea = new TaskmanagerEventArgs() { Task = new TaskBase() { UniqueId = taskId } };
CancellingTask(this, ea);
var value = CurrentTasks[taskId];
TaskEntry s = new TaskEntry();
s.State = "cancelled";
s.Message = "Cancelled by user";
s.UniqueId = value.UniqueId;
s.Description = value.TaskDescription; ;
s.Name = value.Name;
s.TimeStamp = value.TimeStamp;
ProcessedTasks.TryAdd(s.UniqueId, s);
value.Cancel();
ITask irt;
if (CurrentTasks.TryRemove(s.UniqueId, out irt))
{
ea.Task = irt;
CancelledTask(this, ea);
irt.Dispose();
}
}
else if (QueuedTasks.ContainsKey(taskId))
{
TaskEntry te;
if (QueuedTasks.TryRemove(taskId, out te))
{
te.State = "cancelled";
te.Message = "Cancelled by user";
ProcessedTasks.TryAdd(te.UniqueId, te);
}
}
}
private void manageTask(ITask value)
{
StartingTask.Raise(this, new TaskmanagerEventArgs() { Task = value });
TaskEntry entry;
if (QueuedTasks.TryGetValue(value.UniqueId, out entry))
{
if (entry.State == "pending")
{
Exception exception = null;
try
{
CurrentTasks.TryAdd(value.UniqueId, value);
TaskEntry s;
QueuedTasks.TryRemove(value.UniqueId, out s);
StartedTask.Raise(this, new TaskmanagerEventArgs() { Task = value });
value.Run();
}
catch (Exception ex)
{
exception = ex;
Log.Error(ex.ToString());
TaskEntry s;
QueuedTasks.TryRemove(value.UniqueId, out s);
s.State = "error";
s.Message = ex.ToString() + "\n " + DateTime.Now.ToShortDateString() + " " + DateTime.Now.ToLongTimeString();
s.UniqueId = value.UniqueId;
s.Description = value.TaskDescription; ;
s.Name = value.Name;
s.TimeStamp = value.TimeStamp;
ProcessedTasks.TryAdd(s.UniqueId, s);
ITask irt;
CurrentTasks.TryRemove(s.UniqueId, out irt);
}
finally
{
var ea = new TaskmanagerEventArgs() { Task = value, Exception = exception };
EndingTask.Raise(this, ea);
TaskEntry s;
QueuedTasks.TryRemove(value.UniqueId, out s);
s.State = "completed";
s.Message = "Completed on: " + DateTime.Now.ToString();
s.UniqueId = value.UniqueId;
s.Name = value.Name;
s.Description = value.TaskDescription;
s.TimeStamp = value.TimeStamp;
ProcessedTasks.TryAdd(s.UniqueId, s);
ITask irt;
CurrentTasks.TryRemove(s.UniqueId, out irt);
if (exception == null)
value.End();
EndedTask.Raise(this, ea);
value.Dispose();
}
}
else
{
TaskEntry s;
QueuedTasks.TryRemove(value.UniqueId, out s);
ProcessedTasks.TryAdd(s.UniqueId, s);
value.Cancel();
}
}
}
public void Add(ITask task)
{
var ea = new TaskmanagerEventArgs() { Task = task };
AddingTask.Raise(this, ea);
var t = task;
t.TimeStamp = DateTime.Now;
t.UniqueId = Guid.NewGuid();
TaskEntry te = new TaskEntry();
te.State = "pending";
te.UniqueId = t.UniqueId;
te.User = "******";
te.TimeStamp = t.TimeStamp;
te.Name = t.Name;
te.Message = "Awaiting processing.";
te.Description = task.TaskDescription;
//Display of queued items:
QueuedTasks.TryAdd(t.UniqueId, te);
t.OnStatusChange += new EventHandler<TaskEventArgs>(value_OnStatusChange);
//Processing the tasks:
if (t.ByPassQueue)
{
if (secondaryTasks.TryAdd(t))
AddedTask.Raise(this, ea);
}
else
{
if (tasks.TryAdd(t))
AddedTask.Raise(this, ea);
}
}
