app.py

import os

import octoai
octoai_client = octoai.client.Client(token=os.getenv('OCTOML_KEY'))

from pinecone import Pinecone, ServerlessSpec
pc = Pinecone(api_key=os.getenv('PINECONE_API_KEY'))


from llama_index.vector_stores.pinecone import PineconeVectorStore
from llama_index.core import VectorStoreIndex
from llama_index.core.response.pprint_utils import pprint_source_node
from llama_index.llms.octoai import OctoAI

octoai = OctoAI(
    token=os.getenv('OCTOML_KEY'),
    model="meta-llama-3-70b-instruct",
    max_tokens=512,
    temperature=0.1,
)


from llama_index.core.memory import ChatMemoryBuffer

import gradio as gr
from io import StringIO

import util as cu

def get_credit_dist(history):
    atoms_l = cu.sentence_splitter.split_text(history[-1][1])
    atoms_l = list(filter(lambda x: len(x) > 50, atoms_l))
    atom_topkmatches_l = cu.get_atom_topk_matches_l_concurrent(atoms_l, max_workers=8)

    atomidx_w_single_url_aggmatch_l = cu.aggregate_atom_topkmatches_l(atom_topkmatches_l)
    atom_support_l = cu.get_atmom_support_l_from_atomidx_w_single_url_aggmatch_l_concurrent(atoms_l, atomidx_w_single_url_aggmatch_l, max_workers=8)

    credit_dist = cu.credit_atom_support_list(atom_support_l)

    _out = StringIO()
    print(f"Credit distribution to sources:\n", file=_out)
    cu.print_credit_dist(credit_dist, prefix='    ', url_to_id=None, file=_out)
    print(file=_out)

    print(f"Per claim support:\n", file=_out)
    for j, atom_support in enumerate(atom_support_l):
        print(f"    Claim {j+1}: \"{atoms_l[j]}\"\n", file=_out)
        cu.print_atom_support(atom_support, prefix='            ', file=_out)
        print(file=_out)

    return _out.getvalue()


with gr.Blocks() as demo:
    chatbot = gr.Chatbot(height=800)
    msg = gr.Textbox()
    clear = gr.Button("Clear")

    credit_box = gr.Textbox(label="Credit distribution", lines=20, autoscroll=False)
    credit_btn = gr.Button("Credit response")

    def get_chat_engine():
        vector_store = PineconeVectorStore(pinecone_index=pc.Index('prorata-postman-ds-256'))
        vindex = VectorStoreIndex.from_vector_store(vector_store)
        
        memory = ChatMemoryBuffer.from_defaults(token_limit=5000)
        return vindex.as_chat_engine(
            chat_mode="context",
            llm=octoai,
            memory=memory,
            system_prompt="You are a chatbot, able to have normal interactions, as well as talk about news events provided in the context of the conversation.",
        )

    chat_engine_var = gr.State(get_chat_engine)

    def user(user_message, history):
        return "", history + [[user_message, None]]

    def bot(history, chat_engine):
        response = chat_engine.stream_chat(history[-1][0])
        history[-1][1] = ""
        for token in response.response_gen:
            history[-1][1] += token
            yield history

    msg.submit(user, [msg, chatbot], [msg, chatbot], queue=False).then(bot, [chatbot, chat_engine_var], chatbot)
    clear.click(lambda x: x.reset(), chat_engine_var, chatbot, queue=False)

    credit_btn.click(get_credit_dist, chatbot, credit_box)
    
if __name__ == "__main__":
    demo.queue()
    demo.launch()