fix: fallback to json if orjson cannot serialize value (#210)

Signed-off-by: Artem Inzhyyants <artem.inzhyyants@gmail.com>
Co-authored-by: maxi297 <maxime@airbyte.io>

airbyte_cdk/entrypoint.py

@@ -5,6 +5,7 @@
 import argparse
 import importlib
 import ipaddress
+import json
 import logging
 import os.path
 import socket
@@ -46,6 +47,7 @@
 
 VALID_URL_SCHEMES = ["https"]
 CLOUD_DEPLOYMENT_MODE = "cloud"
+_HAS_LOGGED_FOR_SERIALIZATION_ERROR = False
 
 
 class AirbyteEntrypoint(object):
@@ -291,7 +293,17 @@ def set_up_secret_filter(config: TConfig, connection_specification: Mapping[str,
 
     @staticmethod
     def airbyte_message_to_string(airbyte_message: AirbyteMessage) -> str:
-        return orjson.dumps(AirbyteMessageSerializer.dump(airbyte_message)).decode()
+        global _HAS_LOGGED_FOR_SERIALIZATION_ERROR
+        serialized_message = AirbyteMessageSerializer.dump(airbyte_message)
+        try:
+            return orjson.dumps(serialized_message).decode()
+        except Exception as exception:
+            if not _HAS_LOGGED_FOR_SERIALIZATION_ERROR:
+                logger.warning(
+                    f"There was an error during the serialization of an AirbyteMessage: `{exception}`. This might impact the sync performances."
+                )
+                _HAS_LOGGED_FOR_SERIALIZATION_ERROR = True
+            return json.dumps(serialized_message)
 
     @classmethod
     def extract_state(cls, args: List[str]) -> Optional[Any]:

unit_tests/test_entrypoint.py

@@ -768,3 +768,26 @@ def test_handle_record_counts(
         assert isinstance(
             actual_message.state.sourceStats.recordCount, float
         ), "recordCount value should be expressed as a float"
+
+
+def test_given_serialization_error_using_orjson_then_fallback_on_json(
+    entrypoint: AirbyteEntrypoint, mocker, spec_mock, config_mock
+):
+    parsed_args = Namespace(
+        command="read", config="config_path", state="statepath", catalog="catalogpath"
+    )
+    record = AirbyteMessage(
+        record=AirbyteRecordMessage(
+            stream="stream", data={"data": 7046723166326052303072}, emitted_at=1
+        ),
+        type=Type.RECORD,
+    )
+    mocker.patch.object(MockSource, "read_state", return_value={})
+    mocker.patch.object(MockSource, "read_catalog", return_value={})
+    mocker.patch.object(MockSource, "read", return_value=[record, record])
+
+    messages = list(entrypoint.run(parsed_args))
+
+    # There will be multiple messages here because the fixture `entrypoint` sets a control message. We only care about records here
+    record_messages = list(filter(lambda message: "RECORD" in message, messages))
+    assert len(record_messages) == 2