Update LangChain instrumentation and samples for 1.x

Author: nagkumar91

.gitignore

@@ -61,3 +61,4 @@ target
 
 # Benchmark result files
 *-benchmark.json
+instrumentation-genai/opentelemetry-instrumentation-langchain/examples/multi_agent_travel_planner/.env

instrumentation-genai/README.md

@@ -2,8 +2,8 @@
 | Instrumentation | Supported Packages | Metrics support | Semconv status |
 | --------------- | ------------------ | --------------- | -------------- |
 | [opentelemetry-instrumentation-google-genai](./opentelemetry-instrumentation-google-genai) | google-genai >= 1.0.0 | No | development
-| [opentelemetry-instrumentation-langchain](./opentelemetry-instrumentation-langchain) | langchain >= 0.3.21 | No | development
+| [opentelemetry-instrumentation-langchain](./opentelemetry-instrumentation-langchain) | langchain >= 1.0.0 | No | development
 | [opentelemetry-instrumentation-openai-agents-v2](./opentelemetry-instrumentation-openai-agents-v2) | openai-agents >= 0.3.3 | No | development
 | [opentelemetry-instrumentation-openai-v2](./opentelemetry-instrumentation-openai-v2) | openai >= 1.26.0 | Yes | development
 | [opentelemetry-instrumentation-vertexai](./opentelemetry-instrumentation-vertexai) | google-cloud-aiplatform >= 1.64 | No | development
-| [opentelemetry-instrumentation-weaviate](./opentelemetry-instrumentation-weaviate) | weaviate-client >= 3.0.0,<5.0.0 | No | development
+| [opentelemetry-instrumentation-weaviate](./opentelemetry-instrumentation-weaviate) | weaviate-client >= 3.0.0,<5.0.0 | No | development

instrumentation-genai/opentelemetry-instrumentation-langchain/examples/manual/requirements.txt

@@ -1,7 +1,7 @@
-langchain==0.3.21
-langchain_openai
+langchain==1.0.1
+langchain-openai==1.0.0
 opentelemetry-sdk>=1.31.0
 opentelemetry-exporter-otlp-proto-grpc>=1.31.0
 
 # Uncomment after lanchain instrumetation is released
-# opentelemetry-instrumentation-langchain~=2.0b0.dev
+# opentelemetry-instrumentation-langchain~=2.0b0.dev

instrumentation-genai/opentelemetry-instrumentation-langchain/examples/multi_agent_travel_planner/.env.sample

@@ -0,0 +1,14 @@
+# Copy this file to `.env` and update values before running the sample.
+
+# Required OpenAI API key
+OPENAI_API_KEY=sk-YOUR_API_KEY
+
+# Optional: override default model (defaults to gpt-4o-mini)
+# OPENAI_MODEL=gpt-4o-mini
+
+# OTLP exporter configuration (update for your collector)
+# OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4317
+# OTEL_EXPORTER_OTLP_PROTOCOL=grpc
+
+# Traces will use this service.name
+OTEL_SERVICE_NAME=opentelemetry-python-langchain-multi-agent

instrumentation-genai/opentelemetry-instrumentation-langchain/examples/multi_agent_travel_planner/main.py

@@ -40,7 +40,17 @@
 from langchain_openai import ChatOpenAI
 from langgraph.graph import END, START, StateGraph
 from langgraph.graph.message import AnyMessage, add_messages
-from langgraph.prebuilt import create_react_agent
+
+try:  # LangChain >= 1.0.0
+    from langchain.agents import (
+        create_agent as _create_react_agent,  # type: ignore[attr-defined]
+    )
+except (
+    ImportError
+):  # pragma: no cover - compatibility with older LangGraph releases
+    from langgraph.prebuilt import (
+        create_react_agent as _create_react_agent,  # type: ignore[assignment]
+    )
 
 from opentelemetry import trace
 from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import (
@@ -262,7 +272,7 @@ def flight_specialist_node(state: PlannerState) -> PlannerState:
     llm = _create_llm(
         "flight_specialist", temperature=0.4, session_id=state["session_id"]
     )
-    agent = create_react_agent(llm, tools=[mock_search_flights])
+    agent = _create_react_agent(llm, tools=[mock_search_flights])
     task = (
         f"Find an appealing flight from {state['origin']} to {state['destination']} "
         f"departing {state['departure']} for {state['travellers']} travellers."
@@ -287,7 +297,7 @@ def hotel_specialist_node(state: PlannerState) -> PlannerState:
     llm = _create_llm(
         "hotel_specialist", temperature=0.5, session_id=state["session_id"]
     )
-    agent = create_react_agent(llm, tools=[mock_search_hotels])
+    agent = _create_react_agent(llm, tools=[mock_search_hotels])
     task = (
         f"Recommend a boutique hotel in {state['destination']} between {state['departure']} "
         f"and {state['return_date']} for {state['travellers']} travellers."
@@ -312,7 +322,7 @@ def activity_specialist_node(state: PlannerState) -> PlannerState:
     llm = _create_llm(
         "activity_specialist", temperature=0.6, session_id=state["session_id"]
     )
-    agent = create_react_agent(llm, tools=[mock_search_activities])
+    agent = _create_react_agent(llm, tools=[mock_search_activities])
     task = f"Curate signature activities for travellers spending a week in {state['destination']}."
     result = agent.invoke({"messages": [HumanMessage(content=task)]})
     final_message = result["messages"][-1]

instrumentation-genai/opentelemetry-instrumentation-langchain/examples/multi_agent_travel_planner/requirements.txt

@@ -1,4 +1,4 @@
-langchain>=0.3.21
-langchain-openai>=0.2.0
-langgraph>=0.2.39
+langchain>=1.0.0
+langchain-openai>=1.0.0
+langgraph>=1.0.0
 python-dotenv>=1.0.0

instrumentation-genai/opentelemetry-instrumentation-langchain/examples/zero-code/requirements.txt

@@ -1,5 +1,5 @@
-langchain==0.3.21
-langchain_openai
+langchain==1.0.1
+langchain-openai==1.0.0
 opentelemetry-sdk>=1.31.0
 opentelemetry-exporter-otlp-proto-grpc>=1.31.0
 opentelemetry-distro~=0.51b0

instrumentation-genai/opentelemetry-instrumentation-langchain/pyproject.toml

@@ -32,7 +32,7 @@ dependencies = [
 
 [project.optional-dependencies]
 instruments = [
-  "langchain >= 0.3.21",
+  "langchain >= 1.0.0",
 ]
 
 [project.entry-points.opentelemetry_instrumentor]