MemGPT/letta/errors.py

97 lines
3.1 KiB
Python

import json
from typing import TYPE_CHECKING, List, Optional, Union
# Avoid circular imports
if TYPE_CHECKING:
from letta.schemas.message import Message
class LettaError(Exception):
"""Base class for all Letta related errors."""
class LettaToolCreateError(LettaError):
"""Error raised when a tool cannot be created."""
default_error_message = "Error creating tool."
def __init__(self, message=None):
if message is None:
message = self.default_error_message
self.message = message
super().__init__(self.message)
class LLMError(LettaError):
pass
class LLMJSONParsingError(LettaError):
"""Exception raised for errors in the JSON parsing process."""
def __init__(self, message="Error parsing JSON generated by LLM"):
self.message = message
super().__init__(self.message)
class LocalLLMError(LettaError):
"""Generic catch-all error for local LLM problems"""
def __init__(self, message="Encountered an error while running local LLM"):
self.message = message
super().__init__(self.message)
class LocalLLMConnectionError(LettaError):
"""Error for when local LLM cannot be reached with provided IP/port"""
def __init__(self, message="Could not connect to local LLM"):
self.message = message
super().__init__(self.message)
class LettaMessageError(LettaError):
"""Base error class for handling message-related errors."""
messages: List[Union["Message", "LettaMessage"]]
default_error_message: str = "An error occurred with the message."
def __init__(self, *, messages: List[Union["Message", "LettaMessage"]], explanation: Optional[str] = None) -> None:
error_msg = self.construct_error_message(messages, self.default_error_message, explanation)
super().__init__(error_msg)
self.messages = messages
@staticmethod
def construct_error_message(messages: List[Union["Message", "LettaMessage"]], error_msg: str, explanation: Optional[str] = None) -> str:
"""Helper method to construct a clean and formatted error message."""
if explanation:
error_msg += f" (Explanation: {explanation})"
# Pretty print out message JSON
message_json = json.dumps([message.model_dump() for message in messages], indent=4)
return f"{error_msg}\n\n{message_json}"
class MissingFunctionCallError(LettaMessageError):
"""Error raised when a message is missing a function call."""
default_error_message = "The message is missing a function call."
class InvalidFunctionCallError(LettaMessageError):
"""Error raised when a message uses an invalid function call."""
default_error_message = "The message uses an invalid function call or has improper usage of a function call."
class MissingInnerMonologueError(LettaMessageError):
"""Error raised when a message is missing an inner monologue."""
default_error_message = "The message is missing an inner monologue."
class InvalidInnerMonologueError(LettaMessageError):
"""Error raised when a message has a malformed inner monologue."""
default_error_message = "The message has a malformed inner monologue."