add tracing to library client

llama_stack/distribution/library_client.py

@@ -29,6 +29,7 @@ from llama_stack.distribution.stack import (
     get_stack_run_config_from_template,
     replace_env_vars,
 )
+from llama_stack.providers.utils.telemetry.tracing import end_trace, start_trace
 
 T = TypeVar("T")
 
@@ -234,21 +235,29 @@ class AsyncLlamaStackAsLibraryClient(AsyncLlamaStackClient):
             return await self._call_non_streaming(path, "POST", body)
 
     async def _call_non_streaming(self, path: str, method: str, body: dict = None):
-        func = self.endpoint_impls.get(path)
+        await start_trace(path, {"__location__": "library_client"})
-        if not func:
+        try:
-            raise ValueError(f"No endpoint found for {path}")
+            func = self.endpoint_impls.get(path)
+            if not func:
+                raise ValueError(f"No endpoint found for {path}")
 
-        body = self._convert_body(path, body)
+            body = self._convert_body(path, body)
-        return await func(**body)
+            return await func(**body)
+        finally:
+            end_trace()
 
     async def _call_streaming(self, path: str, method: str, body: dict = None):
-        func = self.endpoint_impls.get(path)
+        await start_trace(path, {"__location__": "library_client"})
-        if not func:
+        try:
-            raise ValueError(f"No endpoint found for {path}")
+            func = self.endpoint_impls.get(path)
+            if not func:
+                raise ValueError(f"No endpoint found for {path}")
 
-        body = self._convert_body(path, body)
+            body = self._convert_body(path, body)
-        async for chunk in await func(**body):
+            async for chunk in await func(**body):
-            yield chunk
+                yield chunk
+        finally:
+            end_trace()
 
     def _convert_body(self, path: str, body: Optional[dict] = None) -> dict:
         if not body: