domotz-remote-pawn/src/commands/network/detectNearestNDTServer.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/>.
 **/
/**
 * Given the list of NDT servers sorted by distance, returns the nearest responding.
 * Created by Iacopo Papalini <ipapalini@domotz.com> on 16/09/15.
 */


var detectNearestNDTServer = function (message, resourceLocator) {

    var timeout = message.payload.timeout;
    var maxAttempts = message.payload.maximum_attempts;

    var enable_ookla = typeof resourceLocator.configuration.enable_ookla == 'undefined' ? true : resourceLocator.configuration.enable_ookla;


    if (enable_ookla) {
        var ooklaServers = resourceLocator.networkTools.ooklaServers;
    } else {
        var ndtServers = resourceLocator.networkTools.ndtServers;
    }


    return {
        describe: function () {
            return "detectNearestNDTServer - " +
                "Timeout: " + timeout + 'secs, ' +
                'Maximum number of attempts: ' + maxAttempts;
        },
        execute: function (callback) {

            if (enable_ookla) {
                ooklaServers.fetch().
                    then(function (servers) {
                        return ooklaServers.findNearestResponding(servers, timeout,
                            maxAttempts);
                    }).
                    then(callback).
                    catch(function (error) {
                        callback(null, error);
                    });
            } else {
                ndtServers.fetch().
                    then(function (servers) {
                        return ndtServers.findNearestResponding(servers, timeout,
                            maxAttempts);
                    }).
                    then(callback).
                    catch(function (error) {
                        callback(null, error);
                    });
            }
        }
    };
};

module.exports.command = detectNearestNDTServer;