arrowjs/ArrowjsCore

'use strict';
const redis = require('redis'),
    bluebird = require('bluebird'),
    fakeredis = require('fakeredis'),
    logger = require("./logger");

bluebird.promisifyAll(redis.RedisClient.prototype);
bluebird.promisifyAll(redis.Multi.prototype);

bluebird.promisifyAll(fakeredis.RedisClient.prototype);
bluebird.promisifyAll(fakeredis.Multi.prototype);
/**
 * If Redis server presents then create client to connect to it else create fakeRedis
 * @param config
 * @returns {Promise}
 */
module.exports = function (config) {
    return new Promise(function (resolve, reject) {
        let client = redis.createClient(config);
        /* istanbul ignore next */

        client.on('error', function (err) {
            logger.error("Could not connect to redis server. ArrowJS used fakeredis");
            resolve(fakeredis.createClient);
            return client.quit()

        })

        return client.getAsync("demo").then(function () {
            resolve(redis.createClient);
        }).catch(function (err) {
            resolve(fakeredis.createClient);
        })
    })
};