Comments (3)
that's kinda the "default" behavior, but sure, let's wait for a PR 👍
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I'm having this issue as well, but in pydantic v2. It works fine in vanilla pydantic, but does not work with the CloudEvent
-- or subclasses, as I am using.
In my specific case, I have a Generic subclass for our models.
import uuid
from typing import Generic, TypeVar
from cloudevents.pydantic.v2 import CloudEvent
from pydantic import BaseModel
T = TypeVar("T", bound=BaseModel)
class MyEntity(BaseModel):
id: uuid.UUID
class MyCloudEvent(CloudEvent, Generic[T]):
data: T
if __name__ == "__main__":
obj = MyEntity(id=uuid.uuid4())
evt = MyCloudEvent(
id=str(uuid.uuid4()),
source="urn:source",
subject="subject",
data=obj,
event_type="MyEntity",
type="xyz",
)
# This works:
# print(evt.model_dump(mode="python"))
# But this does not:
print(evt.model_dump(mode="json"))
Stack trace snippet:
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Users/hans/Library/Application Support/JetBrains/PyCharm2023.2/scratches/scratch_42.py", line 30, in <module>
print(evt.model_dump(mode="json"))
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/hans/Library/Caches/pypoetry/virtualenvs/cvPU66vz-py3.11/lib/python3.11/site-packages/pydantic/main.py", line 308, in model_dump
return self.__pydantic_serializer__.to_python(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
pydantic_core._pydantic_core.PydanticSerializationError: Error calling function `_ce_json_dumps`: TypeError: Object of type MyEntity is not JSON serializable
from sdk-python.
We're using fastapi, so the workaround I'm using for the above nested-object serialization issue is:
from fastapi.encoders import jsonable_encoder
jsonable_encoder(event.model_dump(mode="python"))
Which works ... but this used to work without these extra hoops in pydantic v1 (and older cloudevents lib).
from sdk-python.
Related Issues (20)
- Evaluate `cibuildwheels`
- optional pydantic support HOT 7
- `_json_or_string` fails on malformed unicode buffers HOT 2
- Encoded JSON data is not set correctly inside data field HOT 2
- Breaking Changes introduced in version 1.6.0 HOT 3
- Add support for CloudEvents v1.0.2 HOT 1
- Kafka protocol support HOT 4
- CloudEvent equality is incorrect on none attributes HOT 4
- Invalid constraint error HOT 2
- Method to_structured can't control NON-ASCII chars HOT 5
- cloudevents.kafka.conversion.from_structured incorrectly handles headers tuple HOT 2
- `cloudevents.kafka.to_binary` checks for a `content-type` attribute, which would not be a valid attribute name HOT 5
- `.json()` unable to serialize datetime elements in `data` payload HOT 3
- Support for pydantic v2 HOT 3
- Support for AMQP 0-9-1 protocol - RabbitMQ HOT 1
- Review SDK maintainers activity as of March 21, 2024 HOT 2
- to_json on a pydantic.CloudEvent does not include extension values HOT 4
- example should be examples in Field()? HOT 2
- to_structured for Kafka does not create ce_ prefixed headers HOT 2
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