Function: Simple Timer

    +

    Goal: Create a Simple Timer that triggers in the future on each mutation.

    • This function simpleTimer merely demonstrates a basic Evening Timer.

    • Requires Eventing Storage (or metadata collection) and a "source" collection.

    • Will operate on any mutation where the KEY or meta.id starts with "simpletimer:".

    • The result of processing the mutation is a Timer that will be executed approximately 30 seconds in the future.

    • For more details on Timers refer to Timers.

    • For an example of a recurring Timer refer to: Recurring Timer.

    • simpleTimer

    • Input Data/Mutation

    • Output Data/Logged

    // To run configure the settings for this Function, simpleTimer, as follows:
    //
    // Version 7.0+
    //   "Listen to Location"
    //     bulk.data.source
    //   "Eventing Storage"
    //     rr100.eventing.metadata
    //   Binding(s) - none
    //
    // Version 6.X
    //   "Source Bucket"
    //     source
    //   "MetaData Bucket"
    //     metadata
    //   Binding(s) - none
    
    function TimerCallback(context) {
        log('From TimerCallback: timer fired with context', context);
        // do any sort of recurring work here, just update a date_stamp in a doc
    }
    
    function OnUpdate(doc, meta) {
        // You would typically filter to mutations of interest
        if (! meta.id.startsWith("simpletimer:")) return;
    
        // Make a Date 30 seconds in the future
        var thirtySecFromNow = new Date(); // Get current time & add 30 sec. to it.
        thirtySecFromNow.setSeconds(thirtySecFromNow.getSeconds() + 30);
    
        // Timers require an id
        var timer_id = meta.id;
        // Timers can access a context when they fire
        var context = {"id": meta.id, "random": Math.random(), "sched": thirtySecFromNow, doc: doc}
    
        // crate the Timer
        createTimer(TimerCallback, thirtySecFromNow, timer_id, context);
        log("From OnUpdate createTimer(TimerCallback, "+thirtySecFromNow+","+ timer_id+",", context);
    }
    INPUT: KEY simpletimer:1
    
    {
      "id": 1,
      "type": "simpletimer",
      "data": "ABCDEFG"
    }
    2021-07-18T19:47:53.842-07:00 [INFO] "From TimerCallback: timer fired with context" {"id":"simpletimer:1","random":0.9470436283584234,"sched":"2021-07-19T02:47:48.405Z","doc":{"id":1,"type":"simpletimer","data":"ABCDEFG"}}
    
    2021-07-18T19:47:18.407-07:00 [INFO] "From OnUpdate createTimer(TimerCallback, Sun Jul 18 2021 19:47:48 GMT-0700 (Pacific Daylight Time),simpletimer:1," {"id":"simpletimer:1","random":0.9470436283584234,"sched":"2021-07-19T02:47:48.405Z","doc":{"id":1,"type":"simpletimer","data":"ABCDEFG"}}