Source: org/terraswarm/accessor/accessors/web/deterministicTemporalSemantics/SpontaneousPeriodic.js

// Accessor for testing the deterministic temporal semantics.
//
// Copyright (c) 2016-2017 The Regents of the University of California.
// All rights reserved.
//
// Permission is hereby granted, without written agreement and without
// license or royalty fees, to use, copy, modify, and distribute this
// software and its documentation for any purpose, provided that the above
// copyright notice and the following two paragraphs appear in all copies
// of this software.
//
// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
// ENHANCEMENTS, OR MODIFICATIONS.
//

/** This is a spontaneous accessor that outputs how many times it fired each
 *  4000 ms.
 *
 *  @accessor deterministicTemporalSemantics/SpontaneousPeriodic
 *  @output output The output, the number of times the accessor fired
 *  @author Chadlia Jerad
 *  @version $$Id$$
 */

// Stop extra messages from jslint.  Note that there should be no
// space between the / and the * and global.
/*globals clearInterval, clearTimeout, console, error, exports, require, setInterval, setTimeout*/
/*jshint globalstrict: true*/
"use strict";

exports.setup = function () {
    this.output('output', {
        'type': 'number',
        'value': 0
    });
    this.parameter('synchronizationLabel', {
        'type': 'string',
        'value': 'SynchInitialization'
    });
    this.parameter('period', {
        'type': 'number',
        'value': 1000
    });

};

exports.initialize = function () {
    var numberOfFirings = 0;
    var thiz = this;

    var f1 = function () {
        thiz.send('output', ++numberOfFirings);
        console.log(thiz.accessorName + " :: period = " + thiz.getParameter('period') +
            ' with output = ' + thiz.latestOutput('output'));
    };

    var inter = setInterval(f1, thiz.getParameter('period'),
        thiz.getParameter('synchronizationLabel'));

    var f2 = function () {
        clearInterval(inter);
        console.log(thiz.accessorName + ' setInterval cleared.');
    };

    setTimeout(f2, 12000, 'end');
};