/// <summary>
/// Serialize a task to the database to be run at a later date.
/// </summary>
/// <param name="task">Any object that implements ITask</param>
public static void ScheduleTask(BaseTaskRunner runner, DateTime run_at)
{
// MJL 2013-11-07 - The idea is to use reflection or an IoC container
// (StructureMap, Unity, etc...) to instantiate an object based on its
// fully qualified type name. Serialize / Deserialize can then be
// used to restore the object's state.
// The database table would look something like:
// Tasks(id, type_name, state, run_at)
// Saving a task would go something like:
//string type_name = task.GetType().FullName;
//string state = task.Serialize();
//Database.Save(type_name, state, run_at)
// Restoring a task would be something like
// ITask instance = Activator.CreateInstance(Type.GetType(type_name));
// instance.Deserialize(state);
// instance.Run();
Task task = new Task(0)
{
CreatedAt = DateTime.Now,
RunAt = run_at,
State = runner.Serialize(),
Runner = runner.GetType().FullName
};
// make sure this was called.
//task.State = Task.Serialize<T>(task);
task.Save();
}
public static ReturnObject Run(HttpContext context, long task_id)
{
if (task_id <= 0)
return new ReturnObject {Error = true, Message = "Invalid Task."};
Task item = new Task(task_id);
Type runnerType = Type.GetType(item.Runner);
if(runnerType == null)
return new ReturnObject{Error = true, Message = "Invalid task runner requested."};
BaseTaskRunner.Deserialize(item.State, runnerType).Run();
return new ReturnObject
{
Error = false,
Growl = new ReturnGrowlObject
{
Type = "default",
Vars = new ReturnGrowlVarsObject
{
text = "The task completed successfully.",
title = "Task Run"
}
}
};
}
