Langfuse - llamaindex integrations

setup_integration.py

# 1. https://docs.llamaindex.ai/en/v0.10.23/examples/callbacks/LangfuseCallbackHandler/#option-1-set-global-llamaindex-handler
from llama_index.core import global_handler, set_global_handler

set_global_handler("langfuse")
langfuse_callback_handler = global_handler

# 2. https://docs.llamaindex.ai/en/v0.10.23/examples/callbacks/LangfuseCallbackHandler/#option-2-use-langfuse-callback-directly
from llama_index.core import Settings
from llama_index.core.callbacks import CallbackManager
from langfuse.llama_index import LlamaIndexCallbackHandler

langfuse_callback_handler = LlamaIndexCallbackHandler()
Settings.callback_manager = CallbackManager([langfuse_callback_handler])

# 3. https://langfuse.com/docs/integrations/llama-index/example-python-instrumentation-module
from langfuse.llama_index import LlamaIndexInstrumentor
 
instrumentor = LlamaIndexInstrumentor()
instrumentor.start()