Updated requirements

- Added websockets to production.txt
- Import channels_redis in redis.py only for big mode (if use_redis=true)

openslides/utils/redis.py

@@ -1,7 +1,6 @@
 import asyncio
 from typing import Any
 
-from channels_redis.core import ConnectionPool
 from django.conf import settings
 
 from . import logging
@@ -14,6 +13,8 @@ try:
 except ImportError:
     use_redis = False
 else:
+    from channels_redis.core import ConnectionPool
+
     # set use_redis to true, if there is a value for REDIS_ADDRESS in the settings
     redis_address = getattr(settings, "REDIS_ADDRESS", "")
     use_redis = bool(redis_address)

requirements/big_mode.txt

@@ -6,4 +6,4 @@ aioredis>=1.1.0,<1.3
 
 # Requirements for fast asgi server
 gunicorn>=19.9.0,<20
-uvicorn>=0.3.2,<1.1
+uvicorn>=0.9,<1.0

requirements/production.txt

@@ -15,3 +15,4 @@ PyPDF2>=1.26,<1.27
 roman>=2.0,<3.2
 setuptools>=29.0,<42.0
 typing_extensions>=3.6.6,<3.8
+websockets>=8.0,<9.0