domotz-remote-pawn/src/events/handler/scheduledRestart.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 Tommaso Latini <tommaso@domotz.com> on 20/01/16.
 */

const HOUR_IN_MILLISECONDS = 1000 * 60 * 60;
const WARM_UP_EXPECTED_DELAY_DEFAULT = 20 * 60; // 20 minutes
const GRACEFUL_SHUTDOWN_PLATFORMS = ['luxul', 'openwrt', 'ubuntu_core', 'win', 'netgear_router'];
const START_HOUR = 1;
const INTERVAL_LENGTH_IN_HOURS = 4;

var scheduledRestart = function (resourceLocator) {
    var myConsole = resourceLocator.log.decorateLogs();

    var status = resourceLocator.status;

    if (status.get() !== status.CONFIGURED) {
        myConsole.info(' The agent is not in configured mode. Skip');
        return;
    }

    var utils = resourceLocator.utils;

    function hasCurrentPlatformGracefulShutdown() {
        return GRACEFUL_SHUTDOWN_PLATFORMS.indexOf(process.env.DPLATFORM) !== -1;
    }

    function getScheduledRestartDelay(now) {
        var midnight = new Date(now.getFullYear(), now.getMonth(), now.getDate());
        midnight.setDate(midnight.getDate() + 1);
        var rebootTime = new Date(midnight.getTime() + (Math.random() * INTERVAL_LENGTH_IN_HOURS + START_HOUR) * HOUR_IN_MILLISECONDS);
        return rebootTime - new Date();
    }

    var now = new Date();
    var serviceRestart = hasCurrentPlatformGracefulShutdown() ? utils.proc.gracefulShutdown : utils.proc.restart;

    var restartDelay = getScheduledRestartDelay(now);

    var bootNotificationDelay = parseInt(resourceLocator.configuration.warm_up_expected_delay || WARM_UP_EXPECTED_DELAY_DEFAULT) * 1000;
    var restartTime = new Date(now.getTime() + restartDelay);

    myConsole.info(
        ' Set services restart at %s. Delay: %s ms. Notify the successful ' + 'boot in %s ms',
        restartTime,
        restartDelay,
        bootNotificationDelay
    );

    setTimeout(serviceRestart, restartDelay);

    return restartDelay; // For testing purposes
};

module.exports.handler = scheduledRestart;