From 8955bc1866285cdf9f320f42e43bc995033ad925 Mon Sep 17 00:00:00 2001
From: William FH <13333726+hinthornw@users.noreply.github.com>
Date: Tue, 25 Jun 2024 11:57:23 -0700
Subject: [PATCH] [Core] Logging: Suppress missing parent warning (#23363)

---
 libs/core/langchain_core/tracers/core.py           | 11 +++++++----
 libs/core/langchain_core/tracers/root_listeners.py |  4 ++++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/libs/core/langchain_core/tracers/core.py b/libs/core/langchain_core/tracers/core.py
index f66c62d9955..bee9f855b3e 100644
--- a/libs/core/langchain_core/tracers/core.py
+++ b/libs/core/langchain_core/tracers/core.py
@@ -50,6 +50,8 @@ class _TracerCore(ABC):
     This class provides common methods, and reusable methods for tracers.
     """
 
+    log_missing_parent: bool = True
+
     def __init__(
         self,
         *,
@@ -118,10 +120,11 @@ class _TracerCore(ABC):
                 if parent_run := self.run_map.get(str(run.parent_run_id)):
                     self._add_child_run(parent_run, run)
             else:
-                logger.warning(
-                    f"Parent run {run.parent_run_id} not found for run {run.id}."
-                    " Treating as a root run."
-                )
+                if self.log_missing_parent:
+                    logger.warning(
+                        f"Parent run {run.parent_run_id} not found for run {run.id}."
+                        " Treating as a root run."
+                    )
                 run.parent_run_id = None
                 run.trace_id = run.id
                 run.dotted_order = current_dotted_order
diff --git a/libs/core/langchain_core/tracers/root_listeners.py b/libs/core/langchain_core/tracers/root_listeners.py
index 54ec1ba255a..a606889a5ba 100644
--- a/libs/core/langchain_core/tracers/root_listeners.py
+++ b/libs/core/langchain_core/tracers/root_listeners.py
@@ -18,6 +18,8 @@ AsyncListener = Union[
 class RootListenersTracer(BaseTracer):
     """Tracer that calls listeners on run start, end, and error."""
 
+    log_missing_parent = False
+
     def __init__(
         self,
         *,
@@ -63,6 +65,8 @@ class RootListenersTracer(BaseTracer):
 class AsyncRootListenersTracer(AsyncBaseTracer):
     """Async Tracer that calls listeners on run start, end, and error."""
 
+    log_missing_parent = False
+
     def __init__(
         self,
         *,