Trace ID 与分布式 tracing

from langfuse import get_client, Langfuse
langfuse = get_client()
 
external_request_id = "req_12345"
deterministic_trace_id = langfuse.create_trace_id(seed=external_request_id)

from langfuse import get_client, Langfuse
langfuse = get_client()
 
with langfuse.start_as_current_observation(as_type="span", name="my-op") as current_op:
    trace_id = langfuse.get_current_trace_id()
    observation_id = langfuse.get_current_observation_id()
    print(trace_id, observation_id)

import { createTraceId, startObservation } from "@langfuse/tracing";
 
const externalId = "support-ticket-54321";
const langfuseTraceId = await createTraceId(externalId);

import { startObservation, getActiveTraceId } from "@langfuse/tracing";
 
await startObservation("run", async (span) => {
  const traceId = getActiveTraceId();
  console.log(`Current trace ID: ${traceId}`);
});

from langfuse import get_client
 
langfuse = get_client()
 
# Use a predefined trace ID with trace_context parameter
with langfuse.start_as_current_observation(
    as_type="span",
    name="my-operation",
    trace_context={
        "trace_id": "abcdef1234567890abcdef1234567890",  # Must be 32 hex chars
        "parent_span_id": "fedcba0987654321"  # Optional, 16 hex chars
    }
) as observation:
    print(f"This observation has trace_id: {observation.trace_id}")
    # YOUR APPLICATION CODE HERE

from langfuse import observe
 
@observe()
def my_operation(input):
    # YOUR APPLICATION CODE HERE
    result = call_llm(input)
    return result
 
process_user_request(
    input="Hello",
    langfuse_trace_id="abcdef1234567890abcdef1234567890" # Must be 32 hex chars
)

import { createTraceId, startObservation } from "@langfuse/tracing";
 
const externalId = "support-ticket-54321";
 
// Generate a valid, deterministic traceId from the external ID
const langfuseTraceId = await createTraceId(externalId);
 
// You can now start a new trace with this ID
const rootSpan = startObservation(
  "process-ticket",
  {},
  {
    parentSpanContext: {
      traceId: langfuseTraceId,
      spanId: "0123456789abcdef", // A valid 16 hexchar string; value is irrelevant as parent span does not exist but only used for inheritance
      traceFlags: 1, // mark trace as sampled
    },
  }
);
 
// Later, you can regenerate the same traceId to score or retrieve the trace
const scoringTraceId = await createTraceId(externalId);
// scoringTraceId will be the same as langfuseTraceId