make redis server configurable through $REDIS_URL

Author: lina-bh

backend/beets_flask/redis.py

@@ -1,13 +1,17 @@
 import asyncio
+import os
 import time
 from concurrent.futures import ThreadPoolExecutor
 
-from redis import Redis
+import redis
 from rq import Queue
 from rq.job import Job
 
 # Setup redis connection
-redis_conn = Redis()
+if os.environ.get("REDIS_URL"):
+    redis_conn = redis.from_url(os.environ["REDIS_URL"])
+else:
+    redis_conn = redis.Redis()
 
 # Init our different queues
 preview_queue = Queue("preview", connection=redis_conn, default_timeout=600)

docker/entrypoints/entrypoint.sh

@@ -21,7 +21,9 @@ export PYTHONWARNINGS="ignore"
 # running the server from inside the backend dir makes imports and redis easier
 cd /repo/backend
 
-redis-server --daemonize yes >/dev/null 2>&1
+if [ -z "$REDIS_URL" ]; then
+  redis-server --daemonize yes >/dev/null 2>&1
+fi
 
 # blocking
 python ./launch_db_init.py