Add support for rescheduling and resetting the already scheduled timer.

[gurmitteotia]

As discussed in this ticket it make sense to have Timer.Reset and Timer.Reschedule API available to library users. These API are quite generic and could be useful in many scenarios.

Suggested API

Case 1:

  public class OrderWorkflow : Workflow
    {
        public OrderWorkflow()
        {
            ScheduleTimer("GracePeriod").FireAfter(TimeSpan.FromMinutes(30));
           
            ScheduleActivity<ShipOrder>().AfterTimer("GracePeriod");
        }

       [WorkflowEvent(EventName.Signal)]
        public WorkflowAction Signal(WorkflowSignaledEvent @event)
        {
         //This reschedule timer with by taking the timeout from FireAfter API
          var timer = Timer("GracePeriod");
           if (@event.SignalName == "change_time")
                if (timer.IsActive) timer.Reset(); 
            return Ignore;
        }
    }

Case 2:

  public class OrderWorkflow : Workflow
    {
        public OrderWorkflow()
        {
            ScheduleTimer("GracePeriod").FireAfter(TimeSpan.FromMinutes(30));
           
            ScheduleActivity<ShipOrder>().AfterTimer("GracePeriod");
        }

       [WorkflowEvent(EventName.Signal)]
        public WorkflowAction Signal(WorkflowSignaledEvent @event)
        {
         //This reschedule timer with given timeout.
          var timer = Timer("GracePeriod");
           if (@event.SignalName == "change_time")
                if (timer.IsActive) timer.Reschedule(TimeSpan.FromMinutes(20))); 
            return Ignore;
        }
    }

[alexzm1]

Any plans on releasing this change in the short term?

[gurmitteotia]

I can take this up for next release. Anyway I'm going to focus on timers and signals in next few releases.
This ticket will also set the stage for next big ticket.

[gurmitteotia]

This feature is implemented in version 1.2.15.