Implementing task runner.

[akulo]

I am trying to understand how to use later.js to implement following idea. I have requirement where each task has two properties, start time and end time. So I have to run a function at start time and run another function at end time. The end function is only applicable if start time has been executed. Essentially it is start function 1 and after certain duration execute function 2. Any suggestions how it can be accomplished with later.js?

[akulo]

currently I have following code when I want to open and close relay every 2 secs. But I am not sure if its the most elegant way of doing it..

var textSched = later.parse.text('every 4 sec');
var openRelay = function(){
    relay.open();
    var textSched2 = later.parse.text('every 2 sec');
    var timer = later.setTimeout(function(){
        relay.close();
    }, textSched2);
}
var timer2 = later.setInterval(openRelay, textSched);

[balmasi]

From your description, I think this is what you're looking for. For this simple use case I don't think you even need later:

var schedule1 = 4 * 1000,  // Every 4 seconds
    schedule2 = 2 * 1000; // Every 2 seconds

setInterval(openRelay, schedule1);

function openRelay (){
    relay.open();
    var timer = setTimeout(closeRelay, schedul2);
    if (someThingWentWrong) {
      clearTimeout(timer);
    }
}

function closeRelay(){
  relay.close();
}

Is that right?