domotz-remote-pawn/src/discovery/ip_network/discovery_counter.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 Andrea Azzarà <a.azzara@domotz.com> on 19/08/19.
 *
 */

function discoveryCounter(resourceLocator) {
    var counter = 0;
    var myConsole = resourceLocator.log.decorateLogs();
    var fastToFullRatio = resourceLocator.settingsManager.getSetting('configuration.settings.discovery.nmap_scan.fast_to_full_ratio', 30);
    myConsole.info('fast_to_full_ratio = %d', fastToFullRatio);

    function getNextSequenceNumber() {
        if (resourceLocator.settingsManager.isLowThrottleMode()) {
            return 0;
        }
        return counter % fastToFullRatio ? counter : 0;
    }

    function isFullDiscovery() {
        return getNextSequenceNumber() === 0;
    }

    function incrementCounter() {
        counter++;
    }

    return {
        getNextSequenceNumber: getNextSequenceNumber,
        isFullDiscovery: isFullDiscovery,
        incrementCounter: incrementCounter,
    };
}

module.exports.discoveryCounter = discoveryCounter;