function createRedisClient()

in provider/app.js [179:210]

• 25 lines of code
• 3 McCabe index (conditional complexity)

function createRedisClient() {
    const method = 'createRedisClient';

    return new Promise(function(resolve, reject) {
        if (redisUrl) {
            let client;
            if (redisUrl.startsWith('rediss://')) {
                // If this is a rediss: connection, we have some other steps.
                client = redis.createClient(redisUrl, {
                    tls: { servername: new URL(redisUrl).hostname }
                });
                // This will, with node-redis 2.8, emit an error:
                // "node_redis: WARNING: You passed "rediss" as protocol instead of the "redis" protocol!"
                // This is a bogus message and should be fixed in a later release of the package.
            } else {
                client = redis.createClient(redisUrl);
            }

            client.on('connect', function () {
                resolve(client);
            });

            client.on('error', function (err) {
                logger.error(method, 'Error connecting to redis', err);
                reject(err);
            });
        }
        else {
            resolve();
        }
    });
}