Add langtrace for sending traces to Elastic APM

example-apps/chatbot-rag-app/README.md

@@ -21,6 +21,8 @@ tar -xz --strip=2 elasticsearch-labs-main/example-apps/chatbot-rag-app
 
 There are a number of ways to install Elasticsearch. Cloud is best for most use-cases. Visit the [Install Elasticsearch](https://www.elastic.co/search-labs/tutorials/install-elasticsearch) for more information.
 
+Note: This example needs a ELSER model so make sure a ML node with at least 8GB RAM on the cluster is deployed and then deploy the ELSER model on the node.
+
 ### Connect to Elasticsearch
 
 This app requires the following environment variables to be set to connect to Elasticsearch hosted on Elastic Cloud:
@@ -176,7 +178,7 @@ With the environment variables set, you can run the following commands to start
 
 #### Pre-requisites
 
-- Python 3.8+
+- Python 3.8+ and <3.12 (tiktoken will not install for python >= 3.12)
 - Node 14+
 
 #### Install the dependencies

example-apps/chatbot-rag-app/api/app.py

@@ -4,6 +4,9 @@
 from chat import ask_question
 import os
 import sys
+from langtrace_python_sdk import langtrace
+
+langtrace.init()
 
 app = Flask(__name__, static_folder="../frontend/build", static_url_path="/")
 CORS(app)

example-apps/chatbot-rag-app/requirements.txt

@@ -358,7 +358,8 @@ yarl==1.11.1
     # via aiohttp
 zipp==3.20.2
     # via importlib-metadata
-
+langchain-elasticsearch==0.3.0
+langtrace-python-sdk>=3.3.14
 # The following packages are considered to be unsafe in a requirements file:
 # pip
 # setuptools