domotz-remote-pawn/src/events/handler/updateAgent.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 17/12/15.
 */

const LOG_EVENT = 'HANDLER - (updateAgent)';
const AGENT_INFO_URL = 'https://portal.domotz.com/assets/domotz-npm-agent.json';

var updateAgent = function (resourceLocator) {

    if (process.env.DPLATFORM === 'openwrt') {
        console.warn('%s: Update option is disabled for openwrt platform', LOG_EVENT);
        return;
    }

    var registerRequest = resourceLocator.registerRequest;
    var pkgJson = resourceLocator.pkg.json;
    var pkgUpdate = resourceLocator.pkg.update;

    function updateIfObsolete(minReq) {

        var hasToBeUpdated = (minReq.name !== pkgJson.name || minReq.version > pkgJson.version);

        console.info('%s: Check last version of agent.' +
            'Previous: [NAME: %s, VERSION: %s]' +
            ' Current: [NAME: %s, VERSION: %s]. %s',
            LOG_EVENT, minReq.name, minReq.version, pkgJson.name, pkgJson.version,
            hasToBeUpdated ? 'OBSOLETE VERSION => Start update procedure' : '');

        if (hasToBeUpdated) {
            pkgUpdate.updateAgent(minReq.registry, minReq.name, minReq.version);
        }
    }

    registerRequest.sendWithPromise(process.env.AGENT_INFO_URL || AGENT_INFO_URL,
        'GET', {}, null, true).then(updateIfObsolete);

};

module.exports.handler = updateAgent;