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from dataclasses import dataclass
from logging import getLogger
from typing import Any
from apischema import serialize, serialized
from apischema.json_schema import serialization_schema
logger = getLogger(__name__)
def log_error(error: Exception, obj: Any, alias: str) -> None:
logger.error(
"Serialization error in %s.%s", type(obj).__name__, alias, exc_info=error
)
return None
@dataclass
class Foo:
@serialized(error_handler=log_error)
def bar(self) -> int:
raise RuntimeError("Some error")
assert serialize(Foo, Foo()) == {"bar": None} # Logs "Serialization error in Foo.bar"
assert serialization_schema(Foo) == {
"$schema": "http://json-schema.org/draft/2020-12/schema#",
"type": "object",
"properties": {"bar": {"type": ["integer", "null"]}},
"required": ["bar"],
"additionalProperties": False,
}
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