domotz-remote-pawn/src/commands/udpSendPackets.js

Domotz Agent

/** This file is part of Domotz Agent.
 * Copyright (C) 2016  Domotz Ltd
 *
 * Domotz Agent is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Domotz Agent is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Domotz Agent.  If not, see <http://www.gnu.org/licenses/>.
 **/
/**
 * Created by Iacopo Papalini <ipapalini@domotz.com> on 08/04/15.
 *
 */

var udpSendPacket = function (message, resourceLocator) {
    var myConsole = resourceLocator.log.decorateLogs();

    var scheduler = resourceLocator.utils.scheduler;
    var udp = resourceLocator.udp.utils;

    var payload = message.payload;

    var port = payload.port;
    var host = payload.host;
    var filters = payload.datagram_filters;

    function deferredMessage(socket, buffer, host, port) {
        return function () {
            var len = buffer.length;
            var i;
            for (i = 0; i < payload.burst; i++) {
                socket.send(buffer, 0, len, port, host);
            }
            myConsole.silly(len + ' bytes sent ' + i + ' times');
        };
    }

    return {
        execute: function (callback) {
            var socket = udp.createSocket();
            var interval = payload.interval || 200;

            var schedule = [];

            for (var i = 0; i < filters.length; i++) {
                var buffer = udp.decode(filters[i]);
                var action = deferredMessage(socket, buffer, host, port);
                schedule.push([action, interval, 'Send packet #' + i]);
            }

            schedule.push([
                function () {
                    socket.close();
                },
                0,
                'Closing socket',
            ]);

            schedule.push([callback, 0, 'Calling callback']);

            scheduler.execute(schedule);
        },
        describe: function () {
            return message.correlationId + ' - udpSendPackets - ' + host + ':' + port + ' - ' + filters.length + ' packets';
        },
    };
};

module.exports.command = udpSendPacket;