Fix asyncpg.pgproto.pgproto.UUID serialization

Author: r4victor

src/dstack/_internal/utils/json_utils.py

@@ -1,3 +1,4 @@
+import asyncpg.pgproto.pgproto
 import orjson
 from pydantic import BaseModel
 
@@ -8,6 +9,13 @@
     FREEZEGUN = False
 
 
+ASYNCPG = True
+try:
+    import asyncpg.pgproto.pgproto
+except ImportError:
+    ASYNCPG = False
+
+
 def orjson_default(obj):
     if isinstance(obj, float):
         # orjson does not convert float subclasses be default
@@ -16,6 +24,9 @@ def orjson_default(obj):
         # Allows calling orjson.dumps() on pydantic models
         # (e.g. to return from the API)
         return obj.dict()
+    if ASYNCPG:
+        if isinstance(obj, asyncpg.pgproto.pgproto.UUID):
+            return str(obj)
     if FREEZEGUN:
         if isinstance(obj, FakeDatetime):
             return obj.isoformat()