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feat: add reasoning trace extraction from llm calls #1431

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feat: add reasoning trace extraction from llm calls #1431

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28 changes: 19 additions & 9 deletions nemoguardrails/actions/llm/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,7 @@ async def llm_call(
generation_llm, prompt, all_callbacks
)

_store_reasoning_traces(response)
_store_tool_calls(response)
_store_response_metadata(response)
return _extract_content(response)
Expand Down Expand Up @@ -172,6 +173,18 @@ def _convert_messages_to_langchain_format(prompt: List[dict]) -> List:
return dicts_to_messages(prompt)


def _store_reasoning_traces(response) -> None:
if hasattr(response, "additional_kwargs"):
additional_kwargs = response.additional_kwargs
if (
isinstance(additional_kwargs, dict)
and "reasoning_content" in additional_kwargs
):
reasoning_content = additional_kwargs["reasoning_content"]
if reasoning_content:
reasoning_trace_var.set(reasoning_content)


def _store_tool_calls(response) -> None:
"""Extract and store tool calls from response in context."""
tool_calls = getattr(response, "tool_calls", None)
Expand All @@ -192,15 +205,6 @@ def _store_response_metadata(response) -> None:
metadata[field_name] = getattr(response, field_name)
llm_response_metadata_var.set(metadata)

if hasattr(response, "additional_kwargs"):
additional_kwargs = response.additional_kwargs
if (
isinstance(additional_kwargs, dict)
and "reasoning_content" in additional_kwargs
):
reasoning_content = additional_kwargs["reasoning_content"]
if reasoning_content:
reasoning_trace_var.set(reasoning_content)
else:
llm_response_metadata_var.set(None)

Expand Down Expand Up @@ -704,6 +708,12 @@ def extract_tool_calls_from_events(events: list) -> Optional[list]:
return None


def extract_bot_thinking_from_events(events: list):
for event in events:
if event.get("type") == "BotThinking":
return event.get("content")


def get_and_clear_response_metadata_contextvar() -> Optional[dict]:
"""Get the current response metadata and clear it from the context.

Expand Down
6 changes: 3 additions & 3 deletions nemoguardrails/rails/llm/llmrails.py
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Original file line number Diff line number Diff line change
Expand Up @@ -43,8 +43,8 @@

from nemoguardrails.actions.llm.generation import LLMGenerationActions
from nemoguardrails.actions.llm.utils import (
extract_bot_thinking_from_events,
extract_tool_calls_from_events,
get_and_clear_reasoning_trace_contextvar,
get_and_clear_response_metadata_contextvar,
get_colang_history,
)
Expand Down Expand Up @@ -1037,7 +1037,7 @@ async def generate_async(
else:
res = GenerationResponse(response=[new_message])

if reasoning_trace := get_and_clear_reasoning_trace_contextvar():
if reasoning_trace := extract_bot_thinking_from_events(events):
if prompt:
# For prompt mode, response should be a string
if isinstance(res.response, str):
Expand Down Expand Up @@ -1182,7 +1182,7 @@ async def generate_async(
else:
# If a prompt is used, we only return the content of the message.

if reasoning_trace := get_and_clear_reasoning_trace_contextvar():
if reasoning_trace := extract_bot_thinking_from_events(events):
new_message["content"] = reasoning_trace + new_message["content"]

if prompt:
Expand Down