app.py

import gradio as gr
from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles
import uvicorn


app = FastAPI()

@app.on_event("startup")
def print_foo():
    print("FOO!!!")

def dream(prompt):
    return "hello world!"

block = gr.Blocks().queue()
with block:
    prompt = gr.Text()
    gallery = gr.Text()
    btn = gr.Button("Generate")
    btn.click(dream, inputs=prompt, outputs=[gallery])


def mount_gradio_app(
    app: FastAPI, blocks: gr.Blocks, path: str, gradio_api: str
) -> FastAPI:
    """Mount a gradio application (created with gr.routes.App.create_app(block)) to an existing FastAPI application.

    Parameters:
        app: The parent FastAPI application.
        blocks: The blocks application we want to moung
        path: The path at which the gradio application will be mounted.
    """

    gradio_app = gr.routes.App.create_app(blocks)

    @app.on_event("startup")
    async def start_queue():
        if gradio_app.blocks.enable_queue:
            gradio_app.blocks._queue.set_url(gradio_api)
            gradio_app.blocks.startup_events()

    app.mount(path, gradio_app)
    return app

app = mount_gradio_app(app, block, "/", gradio_api="http://localhost:7860/")
app.mount("/img", StaticFiles(directory="images", html=True), name="images")
uvicorn.run(app, host="0.0.0.0", port=7860)