✨ (utils.py): Add functionality to trace runs

🔧 (chat.py): Remove redundant setting of run_id in retrieve_vertices_order function
🔧 (chat.py): Remove setting of run_id in build_vertex function and add end_all_traces method call when no next_runnable_vertices
🔧 (base.py): Add logic to set run_name based on flow name and flow id, and end all traces with metadata in Graph class

src/backend/base/langflow/api/utils.py

@@ -1,3 +1,4 @@
+import uuid
 import warnings
 from pathlib import Path
 from typing import TYPE_CHECKING, Optional
@@ -210,13 +211,17 @@ async def build_graph_from_db(flow_id: str, session: Session, chat_service: "Cha
     flow: Optional[Flow] = session.get(Flow, flow_id)
     if not flow or not flow.data:
         raise ValueError("Invalid flow ID")
-    graph = Graph.from_payload(flow.data, flow_id)
+    graph = Graph.from_payload(flow.data, flow_id, flow_name=flow.name, user_id=flow.user_id)
     for vertex_id in graph._has_session_id_vertices:
         vertex = graph.get_vertex(vertex_id)
         if vertex is None:
             raise ValueError(f"Vertex {vertex_id} not found")
         if not vertex._raw_params.get("session_id"):
             vertex.update_raw_params({"session_id": flow_id}, overwrite=True)
+
+    run_id = uuid.uuid4()
+    graph.set_run_id(run_id)
+    graph.set_run_name()
     await chat_service.set_cache(flow_id, graph)
     return graph
 

src/backend/base/langflow/api/v1/chat.py

@@ -108,11 +108,9 @@ async def retrieve_vertices_order(
         # Now vertices is a list of lists
         # We need to get the id of each vertex
         # and return the same structure but only with the ids
-        run_id = uuid.uuid4()
-        graph.set_run_id(run_id)
         vertices_to_run = list(graph.vertices_to_run) + get_top_level_vertices(graph, graph.vertices_to_run)
         await chat_service.set_cache(str(flow_id), graph)
-        return VerticesOrderResponse(ids=first_layer, run_id=run_id, vertices_to_run=vertices_to_run)
+        return VerticesOrderResponse(ids=first_layer, run_id=graph._run_id, vertices_to_run=vertices_to_run)
 
     except Exception as exc:
         if "stream or streaming set to True" in str(exc):
@@ -204,6 +202,7 @@ async def build_vertex(
             logs = {output_label: Log(message=message, type="error")}
             result_data_response = ResultDataResponse(results={}, logs=logs)
             artifacts = {}
+            graph.end_all_traces(outputs=message)
             # If there's an error building the vertex
             # we need to clear the cache
             await chat_service.clear_cache(flow_id_str)
@@ -240,6 +239,9 @@ async def build_vertex(
         if graph.stop_vertex and graph.stop_vertex in next_runnable_vertices:
             next_runnable_vertices = [graph.stop_vertex]
 
+        if not next_runnable_vertices:
+            graph.end_all_traces()
+
         build_response = VertexBuildResponse(
             inactivated_vertices=inactivated_vertices,
             next_vertices_ids=next_runnable_vertices,

src/backend/base/langflow/graph/graph/base.py

@@ -1,9 +1,10 @@
 import asyncio
 import uuid
 from collections import defaultdict, deque
+from datetime import datetime, timezone
 from functools import partial
 from itertools import chain
-from typing import TYPE_CHECKING, Dict, Generator, List, Optional, Tuple, Type, Union
+from typing import TYPE_CHECKING, Any, Dict, Generator, List, Optional, Tuple, Type, Union
 
 from loguru import logger
 
@@ -20,7 +21,7 @@ from langflow.schema import Data
 from langflow.schema.schema import INPUT_FIELD_NAME, InputType
 from langflow.services.cache.utils import CacheMiss
 from langflow.services.chat.service import ChatService
-from langflow.services.deps import get_chat_service
+from langflow.services.deps import get_chat_service, get_tracing_service
 from langflow.services.monitor.utils import log_transaction
 
 if TYPE_CHECKING:
@@ -35,6 +36,7 @@ class Graph:
         nodes: List[Dict],
         edges: List[Dict[str, str]],
         flow_id: Optional[str] = None,
+        flow_name: Optional[str] = None,
         user_id: Optional[str] = None,
     ) -> None:
         """
@@ -51,6 +53,7 @@ class Graph:
         self._runs = 0
         self._updates = 0
         self.flow_id = flow_id
+        self.flow_name = flow_name
         self.user_id = user_id
         self._is_input_vertices: List[str] = []
         self._is_output_vertices: List[str] = []
@@ -58,6 +61,7 @@ class Graph:
         self._has_session_id_vertices: List[str] = []
         self._sorted_vertices_layers: List[List[str]] = []
         self._run_id = ""
+        self._start_time = datetime.now(timezone.utc)
 
         self.top_level_vertices = []
         for vertex in self._vertices:
@@ -81,6 +85,11 @@ class Graph:
         self.build_graph_maps(self.edges)
         self.define_vertices_lists()
         self.state_manager = GraphStateManager()
+        try:
+            self.tracing_service = get_tracing_service()
+        except Exception as exc:
+            logger.error(f"Error getting tracing service: {exc}")
+            self.tracing_service = None
 
     def get_state(self, name: str) -> Optional[Data]:
         """
@@ -214,6 +223,24 @@ class Graph:
         for vertex in self.vertices:
             self.state_manager.subscribe(run_id, vertex.update_graph_state)
         self._run_id = run_id
+        self.tracing_service.set_run_id(run_id)
+
+    def set_run_name(self):
+        # Given a flow name, flow_id
+        if not self.tracing_service:
+            return
+        name = f"{self.flow_name} - {self.flow_id}"
+        self.tracing_service.set_run_name(name)
+        self.tracing_service.initialize_tracers()
+
+    def end_all_traces(self, outputs: dict[str, Any] | None = None):
+        if not self.tracing_service:
+            return
+        self._end_time = datetime.now(timezone.utc)
+        if outputs is None:
+            outputs = {}
+        outputs |= self.metadata
+        self.tracing_service.end(outputs)
 
     @property
     def sorted_vertices_layers(self) -> List[List[str]]:
@@ -442,10 +469,13 @@ class Graph:
         Returns:
             dict: The metadata of the graph.
         """
+        time_format = "%Y-%m-%d %H:%M:%S"
         return {
-            "runs": self._runs,
-            "updates": self._updates,
-            "inactivated_vertices": self.inactivated_vertices,
+            "start_time": self._start_time.strftime(time_format),
+            "end_time": self._end_time.strftime(time_format),
+            "time_elapsed": f"{(self._end_time - self._start_time).total_seconds()} seconds",
+            "flow_id": self.flow_id,
+            "flow_name": self.flow_name,
         }
 
     def build_graph_maps(self, edges: Optional[List[ContractEdge]] = None, vertices: Optional[List[Vertex]] = None):
@@ -553,9 +583,18 @@ class Graph:
             state["run_manager"] = RunnableVerticesManager.from_dict(run_manager)
         self.__dict__.update(state)
         self.state_manager = GraphStateManager()
+        self.tracing_service = get_tracing_service()
+        self.set_run_id(self._run_id)
+        self.set_run_name()
 
     @classmethod
-    def from_payload(cls, payload: Dict, flow_id: Optional[str] = None, user_id: Optional[str] = None) -> "Graph":
+    def from_payload(
+        cls,
+        payload: Dict,
+        flow_id: Optional[str] = None,
+        flow_name: Optional[str] = None,
+        user_id: Optional[str] = None,
+    ) -> "Graph":
         """
         Creates a graph from a payload.
 
@@ -570,7 +609,7 @@ class Graph:
         try:
             vertices = payload["nodes"]
             edges = payload["edges"]
-            return cls(vertices, edges, flow_id, user_id)
+            return cls(vertices, edges, flow_id, flow_name, user_id)
         except KeyError as exc:
             logger.exception(exc)
             if "nodes" not in payload and "edges" not in payload:
@@ -880,6 +919,7 @@ class Graph:
         chat_service = get_chat_service()
         run_id = uuid.uuid4()
         self.set_run_id(run_id)
+        self.set_run_name()
         lock = chat_service._cache_locks[self.run_id]
         while to_process:
             current_batch = list(to_process)  # Copy current deque items to a list