public void Execute(object commandContext)
{
if (CanExecute(commandContext))
{
if (commandContext is T t)
{
try
{
t.Prepare();
t.StartTime = DateTime.Now;
t.CommandBaseCommon = this;
if (IsCommandExecLogEnabled)
{
t.Log($"start command '{GetType().Name}' at {t.StartTime}");
}
if (!t.RunAsParallelTask)
{
ExecuteImpl(t);
t.EndTime = DateTime.Now;
if (IsCommandExecLogEnabled)
{
t.Log($"command '{GetType().Name}' ended at {t.EndTime}");
}
}
else
{
var task =
new MonitoredTask <T>(
GetType().Name,
ExecuteImpl,
t
);
t.MonitoredTask = task;
if (t.WaitTaskCompleted)
{
task.Task.Wait();
t.EndTime = DateTime.Now;
if (IsCommandExecLogEnabled)
{
t.Log($"command '{GetType().Name}' ended at {t.EndTime}");
}
}
}
} catch (Exception ex)
{
t.Exception = ex;
throw;
}
}
else
{
throw new Exception($"wrong command context type: {commandContext}");
}
}
}
public MonitoredTask MonitorTask(Task t, CancellationTokenSource cancelToken)
{
var mt = new MonitoredTask()
{
task = t,
cancelTask = () => { cancelToken.Cancel(); }
};
monitoredTasks.Enqueue(mt);
return(mt);
}
public MonitoredTask <T> RunInBackground <T>(Func <CancellationToken, Task <T> > asyncFunction, TaskScheduler scheduler, TaskCreationOptions o = TaskCreationOptions.None)
{
var cancelToken = new CancellationTokenSource();
Task <T> task = TaskFactoryStartNew(() => asyncFunction(cancelToken.Token),
cancelToken.Token, o, scheduler).Unwrap();
var mt = new MonitoredTask <T>()
{
task = task, cancelTask = () => { cancelToken.Cancel(); }
};
return(AddToMonitoredTasks(mt, cancelToken));
}
