140 lines
4.0 KiB
Python
140 lines
4.0 KiB
Python
#
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# Copyright (c) 2024–2025, Daily
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#
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# SPDX-License-Identifier: BSD 2-Clause License
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#
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import argparse
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import os
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import subprocess
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from contextlib import asynccontextmanager
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import aiohttp
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from dotenv import load_dotenv
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from fastapi import FastAPI, HTTPException, Request
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.responses import JSONResponse, RedirectResponse
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from pipecat.transports.services.helpers.daily_rest import DailyRESTHelper, DailyRoomParams
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MAX_BOTS_PER_ROOM = 1
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# Bot sub-process dict for status reporting and concurrency control
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bot_procs = {}
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daily_helpers = {}
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load_dotenv(override=True)
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def cleanup():
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# Clean up function, just to be extra safe
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for entry in bot_procs.values():
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proc = entry[0]
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proc.terminate()
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proc.wait()
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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aiohttp_session = aiohttp.ClientSession()
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daily_helpers["rest"] = DailyRESTHelper(
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daily_api_key=os.getenv("DAILY_API_KEY", ""),
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daily_api_url=os.getenv("DAILY_API_URL", "https://api.daily.co/v1"),
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aiohttp_session=aiohttp_session,
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)
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yield
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await aiohttp_session.close()
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cleanup()
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app = FastAPI(lifespan=lifespan)
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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@app.get("/")
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async def start_agent(request: Request):
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print(f"!!! Creating room")
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room = await daily_helpers["rest"].create_room(DailyRoomParams())
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print(f"!!! Room URL: {room.url}")
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# Ensure the room property is present
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if not room.url:
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raise HTTPException(
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status_code=500,
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detail="Missing 'room' property in request data. Cannot start agent without a target room!",
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)
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# Check if there is already an existing process running in this room
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num_bots_in_room = sum(
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1 for proc in bot_procs.values() if proc[1] == room.url and proc[0].poll() is None
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)
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if num_bots_in_room >= MAX_BOTS_PER_ROOM:
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raise HTTPException(status_code=500, detail=f"Max bot limited reach for room: {room.url}")
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# Get the token for the room
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token = await daily_helpers["rest"].get_token(room.url)
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if not token:
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raise HTTPException(status_code=500, detail=f"Failed to get token for room: {room.url}")
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# Spawn a new agent, and join the user session
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# Note: this is mostly for demonstration purposes (refer to 'deployment' in README)
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try:
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proc = subprocess.Popen(
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[f"python3 -m bot -u {room.url} -t {token}"],
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shell=True,
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bufsize=1,
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cwd=os.path.dirname(os.path.abspath(__file__)),
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)
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bot_procs[proc.pid] = (proc, room.url)
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Failed to start subprocess: {e}")
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return RedirectResponse(room.url)
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@app.get("/status/{pid}")
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def get_status(pid: int):
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# Look up the subprocess
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proc = bot_procs.get(pid)
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# If the subprocess doesn't exist, return an error
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if not proc:
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raise HTTPException(status_code=404, detail=f"Bot with process id: {pid} not found")
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# Check the status of the subprocess
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if proc[0].poll() is None:
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status = "running"
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else:
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status = "finished"
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return JSONResponse({"bot_id": pid, "status": status})
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if __name__ == "__main__":
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import uvicorn
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default_host = os.getenv("HOST", "0.0.0.0")
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default_port = int(os.getenv("FAST_API_PORT", "7860"))
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parser = argparse.ArgumentParser(description="Daily Storyteller FastAPI server")
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parser.add_argument("--host", type=str, default=default_host, help="Host address")
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parser.add_argument("--port", type=int, default=default_port, help="Port number")
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parser.add_argument("--reload", action="store_true", help="Reload code on change")
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config = parser.parse_args()
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uvicorn.run(
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"server:app",
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host=config.host,
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port=config.port,
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reload=config.reload,
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)
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