Update job result serialization

src/core/setup_arq.py

@@ -1,6 +1,7 @@
 import asyncio
 from typing import Any
 
+from arq.worker import JobExecutionFailed
 import msgpack
 
 from app.services.cache_updater import (
@@ -30,12 +31,16 @@ async def shutdown(ctx):
 def default(obj: Any):
     if isinstance(obj, asyncio.TimeoutError):
         return msgpack.ExtType(0, "")
+    elif isinstance(obj, JobExecutionFailed):
+        return msgpack.ExtType(1, obj.args[0].encode())
     raise TypeError("Unknown type: %r" % (obj,))
 
 
-def ext_hook(code: int, data: str):
+def ext_hook(code: int, data: bytes):
     if code == 0:
         return asyncio.TimeoutError()
+    elif code == 1:
+        return JobExecutionFailed((data.decode()))
     return msgpack.ExtType(code, data)
 
 
@@ -53,7 +58,7 @@ class WorkerSettings:
     on_shutdown = shutdown
     redis_settings = get_redis_settings()
     max_jobs = 2
-    max_tries = 1
+    max_tries = 2
     job_timeout = 10 * 60
     expires_extra_ms = 7 * 24 * 60 * 1000
     job_serializer = job_serializer