app.py

import os
import threading
import time
import subprocess

print("Expanding user path for Ollama")
OLLAMA = os.path.expanduser("~/ollama")

print("Checking if Ollama exists at the path")
if not os.path.exists(OLLAMA):
    print("Ollama not found, downloading it")
    subprocess.run("curl -L https://ollama.com/download/ollama-linux-amd64 -o ~/ollama", shell=True)
    os.chmod(OLLAMA, 0o755)

def ollama_service_thread():
    print("Starting Ollama service thread")
    subprocess.run("~/ollama serve", shell=True)

print("Creating and starting Ollama service thread")
OLLAMA_SERVICE_THREAD = threading.Thread(target=ollama_service_thread)
OLLAMA_SERVICE_THREAD.start()

print("Giving Ollama serve a moment to start")
time.sleep(10)

print("Setting model to 'gemma2'")
model = "gemma2"

print(f"Pulling model {model}")
subprocess.run(f"~/ollama pull {model}", shell=True)

################################################
################################################
import copy
import gradio as gr
from ollama import Client

print("Initializing Ollama client")
client = Client(host='http://localhost:11434', timeout=120)

print("Getting Hugging Face token and model ID from environment variables")
HF_TOKEN = os.environ.get("HF_TOKEN", None)
MODEL_ID = os.environ.get("MODEL_ID", "google/gemma-2-9b-it")
MODEL_NAME = MODEL_ID.split("/")[-1]

print("Setting up title and description for Gradio interface")
TITLE = "<h1><center>ollama-Chat</center></h1>"
DESCRIPTION = f"""
<h3>MODEL: <a href="https://hf.co/{MODEL_ID}">{MODEL_NAME}</a></h3>
<p>Running on Ollama backend.</p>
"""


CSS = """
.duplicate-button {
    margin: auto !important;
    color: white !important;
    background: black !important;
    border-radius: 100vh !important;
}
h3 {
    text-align: center;
}
"""
import gradio as gr
from llama_index.llms.ollama import Ollama

# Initialize the Ollama model
llm = Ollama(model="llama3", request_timeout=120.0)

# Define the function to get the response from Ollama
def get_response(question):
    resp = llm.complete(question)
    return resp

# Create the Gradio interface
iface = gr.Interface(
    fn=get_response,
    inputs="text",
    outputs="text",
    title="Ask Paul Graham",
    description="Enter a question to learn more about Paul Graham."
)

# Launch the Gradio app
if __name__ == "__main__":
    iface.launch()