from dataclasses import dataclass
from mlflow.entities._mlflow_object import _MlflowObject
from mlflow.protos.assessments_pb2 import AssessmentError as ProtoAssessmentError
from mlflow.utils.annotations import experimental
_STACK_TRACE_TRUNCATION_PREFIX = "[Stack trace is truncated]\n...\n"
_STACK_TRACE_TRUNCATION_LENGTH = 1000
[docs]@experimental(version="2.21.0")
@dataclass
class AssessmentError(_MlflowObject):
"""
Error object representing any issues during generating the assessment.
For example, if the LLM-as-a-Judge fails to generate an feedback, you can
log an error with the error code and message as shown below:
.. code-block:: python
from mlflow.entities import AssessmentError
error = AssessmentError(
error_code="RATE_LIMIT_EXCEEDED",
error_message="Rate limit for the judge exceeded.",
stack_trace="...",
)
mlflow.log_feedback(
trace_id="1234",
name="faithfulness",
source=AssessmentSourceType.LLM_JUDGE,
error=error,
# Skip setting value when an error is present
)
Args:
error_code: The error code.
error_message: The detailed error message. Optional.
stack_trace: The stack trace of the error. Truncated to 1000 characters
before being logged to MLflow. Optional.
"""
error_code: str
error_message: str | None = None
stack_trace: str | None = None
[docs] def to_proto(self):
error = ProtoAssessmentError()
error.error_code = self.error_code
if self.error_message:
error.error_message = self.error_message
if self.stack_trace:
if len(self.stack_trace) > _STACK_TRACE_TRUNCATION_LENGTH:
trunc_len = _STACK_TRACE_TRUNCATION_LENGTH - len(_STACK_TRACE_TRUNCATION_PREFIX)
error.stack_trace = _STACK_TRACE_TRUNCATION_PREFIX + self.stack_trace[-trunc_len:]
else:
error.stack_trace = self.stack_trace
return error
[docs] @classmethod
def from_proto(cls, proto):
return cls(
error_code=proto.error_code,
error_message=proto.error_message or None,
stack_trace=proto.stack_trace or None,
)
[docs] def to_dictionary(self):
return {
"error_code": self.error_code,
"error_message": self.error_message,
"stack_trace": self.stack_trace,
}
[docs] @classmethod
def from_dictionary(cls, error_dict):
return cls(**error_dict)
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