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11 changes: 7 additions & 4 deletions ocpp/messages.py
Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,6 @@

from ocpp.exceptions import (
FormatViolationError,
NotImplementedError,
OCPPError,
PropertyConstraintViolationError,
ProtocolError,
Expand Down Expand Up @@ -217,9 +216,13 @@ def validate_payload(message: Union[Call, CallResult], ocpp_version: str) -> Non
validator = get_validator(
message.message_type_id, message.action, ocpp_version
)
except (OSError, json.JSONDecodeError):
raise NotImplementedError(
details={"cause": f"Failed to validate action: {message.action}"}
except OSError:
raise ValidationError(
f"JSON validation schema not found for action: {message.action}"
)
except json.JSONDecodeError:
raise ValidationError(
f"Error in decoding JSON validation schema for action: {message.action}"
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Only a json.JSONDecodeError should be mapped to a ValidationError. An OSError means that no schema with a given name was found. That means user is using a action that doesn't exists. Therefore, a NotSupportedError is applicable. See my comment here: #494 (comment)

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With #494 a FileNotFoundError should not be raised by the OSError exception, as before it gets to this part of the code a NotSupportedError will be raised by_raise_key_error. So an OSError should only be raised for one of these other reasons https://docs.python.org/3/library/exceptions.html#os-exceptions

)

try:
Expand Down
3 changes: 1 addition & 2 deletions tests/test_messages.py
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,6 @@

from ocpp.exceptions import (
FormatViolationError,
NotImplementedError,
PropertyConstraintViolationError,
ProtocolError,
TypeConstraintViolationError,
Expand Down Expand Up @@ -240,7 +239,7 @@ def test_validate_payload_with_non_existing_schema():
payload={"invalid_key": True},
)

with pytest.raises(NotImplementedError):
with pytest.raises(ValidationError):
validate_payload(message, ocpp_version="1.6")


Expand Down