private void StartNewTasks()
{
List <TaskQueue> tasksNotStarted = TaskQueue.GetTasksNotStarted();
foreach (TaskQueue task in tasksNotStarted)
{
if ((task.SerializedTaskType.Length == 0) || (task.SerializedTaskObject.Length == 0))
{
// is a task somehow gets queued without a task type or serialized object
// just set it as completed
task.CompleteRatio = 1;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
continue;
}
Type t = null;
try
{
t = Type.GetType(task.SerializedTaskType);
}
catch (ArgumentException) { }
catch (TypeLoadException) { }
if (t == null)
{
log.Error("Failed to deserialize and resume task " + task.TaskName);
task.CompleteRatio = 1;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
continue;
}
try
{
ITaskQueueTask qTask
= (ITaskQueueTask)SerializationHelper.DeserializeFromString(Type.GetType(task.SerializedTaskType), task.SerializedTaskObject);
if (qTask != null)
{
qTask.StartTask();
}
else
{
log.Error("Failed to deserialize and start task " + task.TaskName);
}
}
catch (InvalidOperationException ex)
{
log.Error("Failed to deserialize and start task " + task.TaskName + " so cancelling task", ex);
task.CompleteRatio = 1;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
log.Info("Failed Serialized Task was: " + task.SerializedTaskObject);
}
}
}
private void ResumeOrKillStalledTasks()
{
List <TaskQueue> unfinshedTasks = TaskQueue.GetUnfinished();
foreach (TaskQueue task in unfinshedTasks)
{
if (TaskQueue.IsStalled(task))
{
if (task.CanResume)
{
Type t = Type.GetType(task.SerializedTaskType);
if (t == null)
{
log.Error("Failed to deserialize and resume task " + task.TaskName);
task.Status = "Stalled";
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
else
{
try
{
ITaskQueueTask qTask
= (ITaskQueueTask)SerializationHelper.DeserializeFromString(t, task.SerializedTaskObject);
if (qTask != null)
{
qTask.ResumeTask();
}
else
{
log.Error("Failed to deserialize and resume task " + task.TaskName);
}
}
catch (InvalidOperationException ex)
{
log.Error("Failed to deserialize and resume task " + task.TaskName + " so cancelling", ex);
task.CompleteRatio = 1;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
log.Info("Failed Serialized Task was: " + task.SerializedTaskObject);
}
}
}
else
{
// TODO: localize
task.Status = "Stalled";
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
}
}
}