To collect traces for your chatbot API requests using Phoenix, ensure that the tracing setup is correctly configured and that spans are being created and exported. Here are a few steps to troubleshoot and improve your setup:
1. *Ensure Tracer Initialization*: Make sure the tracer is initialized before making any API requests. The `tracer_provider` should be set up correctly, and the `LangChainInstrumentor` should be instrumented before invoking the chain.
2. *Check Span Creation*: Ensure that spans are being created within the context manager. In your code, you should use the `tracer` object to start spans and set attributes. Here's a corrected version of your code snippet:
```
from typing import Dict, Any
from langchain_core.runnables import RunnableSerializable
from pydantic import Field
import json
import requests
from opentelemetry import trace
from phoenix.otel import register
from phoenix.trace.langchain import LangChainInstrumentor
import phoenix as px
class RequestsChain(RunnableSerializable):
endpoint: str = Field(..., description="API endpoint for chatbot requests")
def invoke(self, input: Dict[str, Any], config: Dict[str, Any] = {}) -> Dict[str, Any]:
try:
response = requests.post(self.endpoint, data=json.dumps(input), headers={"Content-Type": "application/json"})
response.raise_for_status()
return response.json()
except Exception as e:
return {"error": str(e), "input": input}
# Launch Phoenix app
session = px.launch_app()
# Set up tracing
tracer_provider = register()
LangChainInstrumentor(tracer_provider=tracer_provider).instrument(skip_dep_check=True)
tracer = tracer_provider.get_tracer("langchain")
API_URL = "http://chatbot.com"
chain = RequestsChain(endpoint=API_URL)
# Start a span for the request
with tracer.start_as_current_span("manual_request_trace") as span:
question = "What is wind velocity"
span.set_attribute("input_question", question)
result = chain.invoke({"ques_text": question})
print(result)
```
3. *Verify Endpoint and Environment*: Ensure that the `API_URL` is correct and accessible. Also, verify that the Phoenix server is running and accessible at the specified endpoint.
4. *Check Phoenix Logs*: Look at the Phoenix server logs to see if there are any errors or warnings that might indicate why traces are not being collected.
5. *Use ConsoleSpanExporter for Debugging*: Add a `ConsoleSpanExporter` to your tracer provider to print the spans to the console. This can help verify if the spans are being created and exported correctly.
Would you like more details on any specific part?
Sources:
- <https://docs.arize.com/phoenix/tracing/how-to-tracing/setup-tracing/instrument-python#openinference-otel-tracing|Phoenix Tracing Setup>
