Adds REDIS_URL support and updates the docs

Author: sxalexander

README.md

@@ -101,6 +101,9 @@ REDIS_HOST="your.redis.host.example.com"
 REDIS_PORT=6379
 REDIS_PASSWORD="YourRedisP@ssword!"
 
+# OR, if your host provides a [Connection URL](https://redis-py.readthedocs.io/en/stable/#quickly-connecting-to-redis)
+REDIS_URL="redis://YourUsername:YourRedisP@ssword!@your.redis.host.example.com:6379"
+
 # deta
 DETA_BASE_NAME="steamcmd"
 DETA_PROJECT_KEY="YourDet@ProjectKey!"

src/functions.py

@@ -90,11 +90,15 @@ def redis_read(app_id):
     """
 
     # parse redis config and connect
-    rds = redis.Redis(
-        host=os.environ["REDIS_HOST"],
-        port=os.environ["REDIS_PORT"],
-        password=os.environ["REDIS_PASSWORD"],
-    )
+    # try connection string, or default to separate REDIS_* env vars
+    if "REDIS_URL" in os.environ:
+        rds = redis.Redis.from_url(os.environ["REDIS_URL"])
+    else:
+        rds = redis.Redis(
+            host=os.environ["REDIS_HOST"],
+            port=os.environ["REDIS_PORT"],
+            password=os.environ["REDIS_PASSWORD"],
+        )
 
     try:
         # get info from cache