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feat(context fix): fixed sessions and users for langchain callback #617

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Merged
shah-siddd merged 1 commit into from
Mar 16, 2026
Merged

feat(context fix): fixed sessions and users for langchain callback #617

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7 changes: 5 additions & 2 deletions src/openlayer/lib/integrations/langchain_callback.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
"""Module with the Openlayer callback handler for LangChain."""

# pylint: disable=unused-argument
import contextvars
import time
from typing import Any, Callable, Dict, List, Optional, Union
from uuid import UUID
Expand Down Expand Up @@ -190,8 +191,9 @@ def _end_step(
):
trace = self._traces_by_root.pop(run_id)
if tracer._configured_background_publish_enabled:
ctx = contextvars.copy_context()
tracer._get_background_executor().submit(
self._process_and_upload_trace, trace
ctx.run, self._process_and_upload_trace, trace
)
else:
self._process_and_upload_trace(trace)
Expand Down Expand Up @@ -1247,8 +1249,9 @@ def _end_step(
if is_root_step and has_standalone_trace and not self._has_external_trace:
trace = self._traces_by_root.pop(run_id)
if tracer._configured_background_publish_enabled:
ctx = contextvars.copy_context()
tracer._get_background_executor().submit(
self._process_and_upload_async_trace, trace
ctx.run, self._process_and_upload_async_trace, trace
)
else:
self._process_and_upload_async_trace(trace)
Expand Down
5 changes: 4 additions & 1 deletion src/openlayer/lib/tracing/tracer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1631,9 +1631,12 @@ def _handle_trace_completion(

if _publish:
if _configured_background_publish_enabled:
# Submit to background thread pool
# Submit to background thread pool, copying context so that
# contextvars (user_id, session_id, etc.) are preserved.
ctx = contextvars.copy_context()
executor = _get_background_executor()
executor.submit(
ctx.run,
_upload_and_publish_trace,
current_trace,
resolved_pipeline_id,
Expand Down