fallback safely for heroku dyno

Author: JacobCoffee

miss_islington/tasks.py

@@ -19,8 +19,8 @@
 app = celery.Celery("backport_cpython")
 
 app.conf.update(
-    broker_url=os.environ.get("REDIS_URL", ""),
-    result_backend=os.environ.get("REDIS_URL", ""),
+    broker_url=os.environ.get("REDIS_URL", os.environ.get("HEROKU_REDIS_MAROON_URL", "")),
+    result_backend=os.environ.get("REDIS_URL", os.environ.get("HEROKU_REDIS_MAROON_URL", "")),
     broker_connection_retry_on_startup=True,
     broker_use_ssl={"ssl_cert_reqs": ssl.CERT_NONE},
     redis_backend_use_ssl={"ssl_cert_reqs": ssl.CERT_NONE},