refactor: switch to a different langchain tracer

Author: sinedied

package-lock.json

@@ -16,6 +16,7 @@
   "author": "Microsoft",
   "license": "MIT",
   "dependencies": {
+    "@arizeai/openinference-instrumentation-langchain": "^3.4.3",
     "@azure/functions": "^4.0.0",
     "@azure/identity": "^4.2.0",
     "@azure/monitor-opentelemetry": "^1.12.0",
@@ -30,8 +31,7 @@
     "@opentelemetry/instrumentation": "^0.205.0",
     "@opentelemetry/sdk-trace-base": "^2.1.0",
     "@opentelemetry/sdk-trace-node": "^2.0.1",
-    "@traceloop/instrumentation-langchain": "^0.19.0",
-    "langchain": "^0.3.6"
+    "langchain": "^0.3.34"
   },
   "devDependencies": {
     "@types/node": "^22",

packages/agent-api/package.json

@@ -6,8 +6,8 @@ import { useAzureMonitor } from "@azure/monitor-opentelemetry";
 import { OTLPTraceExporter } from "@opentelemetry/exporter-trace-otlp-http";
 import { NodeTracerProvider } from "@opentelemetry/sdk-trace-node";
 import { BatchSpanProcessor } from "@opentelemetry/sdk-trace-base";
-import { LangChainInstrumentation } from "@traceloop/instrumentation-langchain";
-import { registerInstrumentations } from "@opentelemetry/instrumentation";
+import { LangChainInstrumentation } from "@arizeai/openinference-instrumentation-langchain";
+import * as CallbackManagerModule from "@langchain/core/callbacks/manager";
 
 let isTracingInitialized = false;
 if (!isTracingInitialized) {
@@ -32,9 +32,9 @@ if (!isTracingInitialized) {
     provider.register();
   }
 
-  registerInstrumentations({
-    instrumentations: [new LangChainInstrumentation()],
-  });
+  // Manually instrument LangChain's CallbackManager to capture traces
+  const langchainInstrumentation = new LangChainInstrumentation();
+  langchainInstrumentation.manuallyInstrument(CallbackManagerModule);
 
   isTracingInitialized = true;
 }