domotz-remote-pawn/src/bootstrap/signals.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 tom on 09/03/16.
 */

var setHandler = function(proc, log, status, eventUtils, engineRequest) {

    function flushLog() {
        if (log) {
            log.flush();
        }
    }

    function shutdown() {
        proc.gracefulShutdown();
        flushLog();
    }

    process.on('uncaughtException', function (error) {
        console.error('Error uncaught: ' + error.code);
        console.error('Message: ' + error.message);
        console.error(error.stack);
        proc.gracefulShutdown();
        flushLog();
    });

    process.on('SIGHUP', function () {
        console.warn('Catch signal SIGHUP');
        flushLog();
    });

    process.on('SIGINT', function () {
        console.warn('Catch signal SIGINT');
        proc.gracefulShutdown();
        flushLog();
    });

    process.on('SIGTERM', function () {
        console.warn('Catch signal SIGTERM');
        if (status && status.get() === status.CONFIGURED) {
            console.warn('The agent is in configured mode. Send down signal');
            var body = eventUtils.getBodyForEvent("down", "sigterm");
            var resource = '/event';
            var method = 'POST';

            engineRequest.sendWithPromise(resource, method, body, undefined, undefined, {timeout: 5000})
                .finally(shutdown);
        } else {
            shutdown();
        }
    });

};

module.exports.setHandler = setHandler;