forked from Archives/langchain
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
"""A fake callback handler for testing purposes."""
|
|
from typing import Any, Dict, List
|
|
|
|
from langchain.callbacks.base import BaseCallbackHandler
|
|
from langchain.schema import AgentAction, AgentFinish, LLMResult
|
|
|
|
|
|
class FakeCallbackHandler(BaseCallbackHandler):
|
|
"""Fake callback handler for testing."""
|
|
|
|
starts: int = 0
|
|
ends: int = 0
|
|
errors: int = 0
|
|
text: int = 0
|
|
|
|
def on_llm_start(
|
|
self, serialized: Dict[str, Any], prompts: List[str], **kwargs: Any
|
|
) -> None:
|
|
"""Run when LLM starts running."""
|
|
self.starts += 1
|
|
|
|
def on_llm_end(self, response: LLMResult, **kwargs: Any) -> None:
|
|
"""Run when LLM ends running."""
|
|
self.ends += 1
|
|
|
|
def on_llm_error(self, error: Exception, **kwargs: Any) -> None:
|
|
"""Run when LLM errors."""
|
|
self.errors += 1
|
|
|
|
def on_chain_start(
|
|
self, serialized: Dict[str, Any], inputs: Dict[str, Any], **kwargs: Any
|
|
) -> None:
|
|
"""Run when chain starts running."""
|
|
self.starts += 1
|
|
|
|
def on_chain_end(self, outputs: Dict[str, Any], **kwargs: Any) -> None:
|
|
"""Run when chain ends running."""
|
|
self.ends += 1
|
|
|
|
def on_chain_error(self, error: Exception, **kwargs: Any) -> None:
|
|
"""Run when chain errors."""
|
|
self.errors += 1
|
|
|
|
def on_tool_start(
|
|
self, serialized: Dict[str, Any], action: AgentAction, **kwargs: Any
|
|
) -> None:
|
|
"""Run when tool starts running."""
|
|
self.starts += 1
|
|
|
|
def on_tool_end(self, output: str, **kwargs: Any) -> None:
|
|
"""Run when tool ends running."""
|
|
self.ends += 1
|
|
|
|
def on_tool_error(self, error: Exception, **kwargs: Any) -> None:
|
|
"""Run when tool errors."""
|
|
self.errors += 1
|
|
|
|
def on_text(self, text: str, **kwargs: Any) -> None:
|
|
"""Run when agent is ending."""
|
|
self.text += 1
|
|
|
|
def on_agent_finish(self, finish: AgentFinish, **kwargs: Any) -> None:
|
|
"""Run when agent ends running."""
|
|
self.ends += 1
|