Serialize custom UUIDs to JSON (#1266)

Author: Wizard1209

CHANGELOG.md

@@ -18,6 +18,7 @@ Releases prior to 7.0 has been removed from this file to declutter search result
 - config: Fixed `config export` command crash when `advanced.reindex` section is present in config.
 - config: Do not trigger `config_modified` reindexing when datasource URLs are updated.
 - datasources: Do not run datasources not linked to any index and without `realtime` flag set.
+- models: Fixed serializing UUIDs in `JSONField`.
 - substrate: Fixed loading type registries when specified in config.
 - substrate: Fixed processing several vector types.
 

src/dipdup/utils.py

@@ -17,6 +17,7 @@
 from typing import Any
 from typing import TextIO
 from typing import TypeVar
+from uuid import UUID
 
 import orjson
 from humps import main as humps
@@ -229,6 +230,9 @@ def parse_object(
 def _default_for_decimals(obj: Any) -> Any:
     if isinstance(obj, Decimal):
         return str(obj)
+    # NOTE: although UUID is serializable by orjson, asyncpg UUID type is not
+    if isinstance(obj, UUID):
+        return str(obj)
     raise TypeError