app_tree.py

from llama_index import Document, SimpleDirectoryReader, GPTListIndex, GPTSimpleVectorIndex, GPTTreeIndex, LLMPredictor, PromptHelper, ServiceContext
from llama_index import download_loader
from langchain import OpenAI
from pathlib import Path
import gradio as gr
import sys
import os
import logging

logging.basicConfig(format='%(asctime)s %(levelname)s:%(message)s', level=os.environ.get("LOGLEVEL", "DEBUG"))

#dataFiles = ["RetroApril","RetroMarch", "Snowflake", "Datadog", "Databricks", "SplunkProducts", "SplunkEnterprise"]
dataFiles = ["Lastpass", "RetroApril","RetroMarch"]

cache = {}


def indexFile(filePath):
    PandasCSVReader = download_loader("PandasCSVReader")
    loader = PandasCSVReader()
    documents = loader.load_data(file=Path('./csv/' + filePath + '.csv'))
    index = GPTTreeIndex.from_documents(documents)
    index.save_to_disk("treeIndex/" + filePath + '.json')

def loadData():
    """
    Load indices from disk for improved performance
    """
    for file in dataFiles :
        print("Loading file "+ file)
        indexFilePath= "treeIndex/" + file + '.json'
        if not os.path.exists(indexFilePath):
            indexFile(file)
        cache[file]= GPTTreeIndex.load_from_disk(indexFilePath)    

def chatbot(indexName, input_text):
    """
    Chatbot function that takes in a prompt and returns a response
    """
    index = cache[indexName]
    response = index.query(input_text, response_mode="compact")
    return response.response

log = logging.getLogger(__name__)

loadData()

iface = gr.Interface(fn=chatbot,
                     inputs= [ 
                         gr.Dropdown(dataFiles, 
                                     type="value", value="Lastpass", label="Select Pulse Data"), 
                         gr.Textbox(lines=7, label="Ask any question", placeholder='What is the summary?')],
                     outputs="text",
                     title="NLP Demo for Chat Interface")


iface.launch(share=False)