Remove custom Redis connection code in favor of redis.from_url (getre…

…dash#3992)

redash/__init__.py

@@ -35,42 +35,10 @@ def setup_logging():
             logging.getLogger(name).setLevel("ERROR")
 
 
-def create_redis_connection():
-    logging.debug("Creating Redis connection (%s)", settings.REDIS_URL)
-    redis_url = urlparse.urlparse(settings.REDIS_URL)
-
-    if redis_url.scheme == 'redis+socket':
-        qs = urlparse.parse_qs(redis_url.query)
-        if 'virtual_host' in qs:
-            db = qs['virtual_host'][0]
-        else:
-            db = 0
-
-        client = redis.StrictRedis(unix_socket_path=redis_url.path, db=db)
-    else:
-        use_ssl = redis_url.scheme == 'rediss'
-
-        if redis_url.path:
-            redis_db = redis_url.path[1]
-        else:
-            redis_db = 0
-        # Redis passwords might be quoted with special characters
-        redis_password = redis_url.password and urllib.unquote(redis_url.password)
-        client = redis.StrictRedis(
-            host=redis_url.hostname, port=redis_url.port, db=redis_db, password=redis_password,
-            ssl=use_ssl)
-
-    return client
-
-
 setup_logging()
 
-redis_connection = create_redis_connection()
-
+redis_connection = redis.from_url(settings.REDIS_URL)
 mail = Mail()
-
 migrate = Migrate()
-
 statsd_client = StatsClient(host=settings.STATSD_HOST, port=settings.STATSD_PORT, prefix=settings.STATSD_PREFIX)
-
 limiter = Limiter(key_func=get_ipaddr, storage_uri=settings.LIMITER_STORAGE)