domotz-remote-pawn/src/amqp/connection.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 Iacopo Papalini <ipapalini@domotz.com> on 17/09/15.
 */

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

    var amqplib = resourceLocator.amqplib;
    var util = resourceLocator.util;
    var configuration = resourceLocator.configuration;

    var amqpServerConfiguration = configuration.message_broker;
    var credentials = configuration.credentials;

    function logConnection() {
        myConsole.debug('Connection successful:');
        Object.keys(amqpServerConfiguration).forEach(function (key) {
            myConsole.debug('  --> ' + key + ': ' + amqpServerConfiguration[key]);
        });
    }

    function createConnectionUrl() {
        var user = credentials.user;
        var password = credentials.password;
        var protocol = amqpServerConfiguration.protocol || 'amqp';
        var host = amqpServerConfiguration.host;
        var port = amqpServerConfiguration.port;
        var vhost = amqpServerConfiguration.virtual_host;

        myConsole.info('Connecting to: %s://%s:***********@%s:%s/%s', protocol, user, host, port, vhost);
        return util.format('%s://%s:%s@%s:%s/%s?heartbeat=60', protocol, user, password, host, port, vhost);
    }

    // USELESS!!! TODO: Remove when it disappears from listener.js
    function setSignalHandler(connection) {
        logConnection();
        process.once('SIGINT', function () {
            connection.close();
        });
        return connection;
    }

    function connect(url) {
        return amqplib.connect(url);
    }

    return {
        createConnectionUrl: createConnectionUrl,
        connect: connect,
        setSignalHandler: setSignalHandler,
    };
};

module.exports.factory = factory;