/// <summary>
/// Creates a new node with the specified task name.
/// </summary>
/// <param name="taskName">Name of the task.</param>
/// <param name="action">The action.</param>
/// <returns></returns>
public TaskNode <T> Create(string taskName, Func <T, bool> action)
{
var node = new TaskNode <T>()
{
TaskName = taskName,
Action = action,
Parent = this,
};
_nodes.Add(node);
if (!_runnings.ContainsKey(node.TaskName))
{
_runnings.Add(node.TaskName, new Count());
}
return(node);
}
protected internal virtual void Event(EventKind kind, TaskNode <T> taskNode, Exception exception = null)
{
string msg = string.Empty;
if (exception != null)
{
msg = $"{taskNode.TaskName} is {kind} at {DateTime.Now}. {exception.Message}";
}
else
{
msg = $"{taskNode.TaskName} is {kind} at {DateTime.Now}";
}
#if DEBUG
Debug.WriteLine(msg);
#endif
Trace.WriteLine(msg);
}
/// <summary>
/// Continues with the specified node
/// </summary>
/// <param name="node">The node.</param>
/// <param name="stopIfFailed">if set to <c>true</c> [stop if the current node is failed].</param>
/// <returns></returns>
public TaskNode <T> ContinueWith(TaskNode <T> node, bool stopIfFailed = true)
{
node._guards.Add(new Guard(this, stopIfFailed));
return(node);
}
public TaskNode <T> ContinueWith(string taskName, bool stopIfFailed = true)
{
TaskNode <T> node = Parent.Get(taskName) ?? throw new Exception($"task node {taskName} can't be resolved");
return(ContinueWith(node, stopIfFailed));
}
public Guard(TaskNode <T> taskNode, bool stopIfFailed)
{
_taskNode = taskNode;
_stopIfFailed = stopIfFailed;
}
internal void Stop(TaskNode <T> task)
{
_runnings[task.TaskName].Decrement();
}
internal void Start(TaskNode <T> task)
{
_runnings[task.TaskName].Increment();
}