added entry point and fixed unwrap

wrisa · wrisa · commit 33afa200166b · 2025-08-04T14:43:56.000-07:00
diff --git a/instrumentation-genai/opentelemetry-instrumentation-langchain/pyproject.toml b/instrumentation-genai/opentelemetry-instrumentation-langchain/pyproject.toml
@@ -35,6 +35,9 @@ instruments = [
   "langchain >= 0.3.21",
 ]
 
+[project.entry-points.opentelemetry_instrumentor]
+langchain = "opentelemetry.instrumentation.langchain:LangChainInstrumentor"
+
 [project.urls]
 Homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib/tree/main/instrumentation-genai/opentelemetry-instrumentation-langchain"
 Repository = "https://github.com/open-telemetry/opentelemetry-python-contrib"
diff --git a/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/__init__.py b/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/__init__.py
@@ -92,7 +92,7 @@ def _uninstrument(self, **kwargs):
         """
         Cleanup instrumentation (unwrap).
         """
-        unwrap("langchain_core.callbacks.base", "BaseCallbackManager.__init__")
+        unwrap("langchain_core.callbacks.base.BaseCallbackManager", "__init__")
 
 
 class _BaseCallbackManagerInitWrapper:

Original file line number	Diff line number	Diff line change
`@@ -35,6 +35,9 @@ instruments = [`
`35`	`35`	`"langchain >= 0.3.21",`
`36`	`36`	`]`
`37`	`37`
	`38`	`+[project.entry-points.opentelemetry_instrumentor]`
	`39`	`+langchain = "opentelemetry.instrumentation.langchain:LangChainInstrumentor"`
	`40`	`+`
`38`	`41`	`[project.urls]`
`39`	`42`	`Homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib/tree/main/instrumentation-genai/opentelemetry-instrumentation-langchain"`
`40`	`43`	`Repository = "https://github.com/open-telemetry/opentelemetry-python-contrib"`