[~] Refactor

python/tasks/tiktok/celery.py

@@ -9,6 +9,7 @@ app = celery.Celery(
     __name__,
     broker=c.celery_broker,
     result_backend=c.celery_result_backend,
+    accept_content=['pickle'],
 )
 
 app.autodiscover_tasks(c.celery_imports)

python/tasks/tiktok/utils.py

@@ -1,12 +1,51 @@
 import celery.app.task
+import importlib
+import kombu.serialization
+import kombu.utils.json
+from typing import (
+    Any,
+)
+
 
 class Task(celery.app.task.Task):
     def __call__(self, *args, **kwargs):
         res = super().__call__(*args, **kwargs)
         return self._to_native(res)
 
-    def _to_native(self, data):
-        if hasattr(data, 'to_dict'):
-            return data.to_dict()
+    @classmethod
+    def _loads(self, data_str: str) -> Any:
+        data = kombu.utils.json.loads(data_str)
+
+        if isinstance(data, dict) and data.get('type') == 'dataclass_json':
+            module_name = data['module']
+            class_names = data['_class'].split('.')
+
+            m = importlib.import_module(module_name)
+
+            c = m
+            for current_name in class_names:
+                c = getattr(c, current_name)
+
+            return c(**data['data'])
         else:
             return data
+
+    @classmethod
+    def _dumps(self, data: Any) -> str:
+        if hasattr(data, 'to_dict'):
+            return kombu.utils.json.dumps(dict(
+                type='dataclass_json',
+                module=data.__class__.__module__,
+                _class=data.__class__.__qualname__,
+                data=data.to_dict(),
+            ))
+        else:
+            return kombu.utils.json.dumps(data)
+
+kombu.serialization.register(
+    'json-dataclass',
+    Task._dumps,
+    Task._loads,
+    content_type='application/json',
+    content_encoding='text',
+)