Spaces:
Runtime error
Runtime error
File size: 8,262 Bytes
24cdea4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 | """
LiveKit FastAPI server for Pipecat.
Provides HTTP endpoints for managing LiveKit-based voice AI sessions.
"""
import asyncio
import json
import os
import subprocess
import sys
import uuid
from typing import Dict, Any, Optional
from fastapi import FastAPI, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel
import uvicorn
from loguru import logger
from dotenv import load_dotenv
# Add parent directory for imports
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from utils.session import get_max_session_duration
from livekit_server.utils import LiveKitHelper
# Load environment variables
load_dotenv()
app = FastAPI(title="Pipecat LiveKit Server", version="1.0.0")
# Add CORS middleware
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# Store active bot processes
active_bots: Dict[str, subprocess.Popen] = {}
class BotStartRequest(BaseModel):
"""Request to start a new bot session."""
room_name: Optional[str] = None # Auto-generated if not provided
body: Dict[str, Any] # Bot configuration (flow, config, metadata)
class BotStartResponse(BaseModel):
"""Response with session details."""
room_name: str
livekit_url: str
participant_token: str # Token for the user/client to join
bot_token: str # Token for the bot (internal use)
session_id: str
class RoomListResponse(BaseModel):
"""Response with list of active rooms."""
rooms: list
@app.post("/", response_model=BotStartResponse)
@app.post("/start", response_model=BotStartResponse)
async def start_bot(request: BotStartRequest):
"""
Start a new bot session with LiveKit.
Creates a LiveKit room, generates tokens, and starts the bot process.
"""
try:
session_id = str(uuid.uuid4())
room_name = request.room_name or f"pipecat-{session_id[:8]}"
logger.info(f"Starting LiveKit bot session: {session_id}")
# Get max session duration
max_session_duration = get_max_session_duration(request.body)
# Add max_session_duration to bot_data
bot_data = request.body.copy()
if "max_session_duration" not in bot_data:
bot_data["max_session_duration"] = max_session_duration
# Initialize LiveKit helper
livekit = LiveKitHelper()
# Create room
await livekit.create_room(
room_name=room_name,
empty_timeout=max_session_duration + 60, # Room stays alive a bit longer
max_participants=2, # Bot + user
)
# Create tokens
bot_token = livekit.create_token(
room_name=room_name,
participant_identity="bot",
ttl=max_session_duration + 300,
can_publish=True,
can_subscribe=True,
)
participant_token = livekit.create_token(
room_name=room_name,
participant_identity=f"user-{session_id[:8]}",
ttl=max_session_duration + 300,
can_publish=True,
can_subscribe=True,
)
# Start bot process
await start_bot_process(
session_id=session_id,
room_name=room_name,
livekit_url=livekit.url,
bot_token=bot_token,
bot_data=bot_data,
)
logger.info(f"Bot started successfully: {session_id} in room {room_name}")
return BotStartResponse(
room_name=room_name,
livekit_url=livekit.url,
participant_token=participant_token,
bot_token=bot_token,
session_id=session_id,
)
except Exception as e:
logger.error(f"Error starting bot: {e}")
raise HTTPException(status_code=500, detail=f"Failed to start bot: {str(e)}")
@app.delete("/bot/{session_id}")
async def stop_bot(session_id: str):
"""Stop an active bot session."""
if session_id not in active_bots:
raise HTTPException(status_code=404, detail="Bot session not found")
process = active_bots[session_id]
process.terminate()
del active_bots[session_id]
logger.info(f"Bot stopped: {session_id}")
return {"status": "stopped", "session_id": session_id}
@app.get("/rooms", response_model=RoomListResponse)
async def list_rooms():
"""List all active LiveKit rooms."""
try:
livekit = LiveKitHelper()
rooms = await livekit.list_rooms()
return RoomListResponse(rooms=rooms)
except Exception as e:
logger.error(f"Error listing rooms: {e}")
raise HTTPException(status_code=500, detail=str(e))
@app.delete("/rooms/{room_name}")
async def delete_room(room_name: str):
"""Delete a LiveKit room."""
try:
livekit = LiveKitHelper()
await livekit.delete_room(room_name)
return {"status": "deleted", "room_name": room_name}
except Exception as e:
logger.error(f"Error deleting room: {e}")
raise HTTPException(status_code=500, detail=str(e))
@app.get("/health")
async def health_check():
"""Health check endpoint."""
return {
"status": "healthy",
"transport": "livekit",
"active_sessions": len(active_bots),
}
@app.get("/bots")
async def list_bots():
"""List all active bot sessions."""
return {
"bots": [
{"session_id": sid, "pid": proc.pid}
for sid, proc in active_bots.items()
if proc.poll() is None # Only running processes
]
}
async def start_bot_process(
session_id: str,
room_name: str,
livekit_url: str,
bot_token: str,
bot_data: Dict[str, Any],
):
"""Start the bot runner process."""
try:
project_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
cmd = [
"uv",
"run",
"livekit_server/runner.py",
"--session-id",
session_id,
"--room-name",
room_name,
"--livekit-url",
livekit_url,
"--token",
bot_token,
"--bot-data",
json.dumps(bot_data),
]
logger.info(f"Starting bot process: {' '.join(cmd[:6])}...")
process = subprocess.Popen(
cmd,
cwd=project_root,
env=os.environ.copy(),
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
bufsize=1,
universal_newlines=True,
)
active_bots[session_id] = process
logger.info(f"Bot process started with PID: {process.pid}")
# Start log piping task
asyncio.create_task(pipe_logs(process, session_id))
except Exception as e:
logger.error(f"Failed to start bot process: {e}")
raise
async def pipe_logs(process: subprocess.Popen, session_id: str):
"""Pipe subprocess logs to main logger."""
try:
while True:
line = process.stdout.readline()
if not line:
if process.poll() is not None:
break
await asyncio.sleep(0.1)
continue
logger.info(f"[{session_id[:8]}] {line.strip()}")
except Exception as e:
logger.error(f"Error piping logs for {session_id}: {e}")
finally:
# Clean up when process ends
if session_id in active_bots:
del active_bots[session_id]
logger.info(f"Bot session ended: {session_id}")
if __name__ == "__main__":
host = os.getenv("HOST", "0.0.0.0")
port = int(os.getenv("PORT", "8000"))
logger.info("Starting Pipecat LiveKit Server")
logger.info(f"Server will run at: http://{host}:{port}")
logger.info("Available endpoints:")
logger.info(" POST /start - Start bot session")
logger.info(" DELETE /bot/{id} - Stop bot session")
logger.info(" GET /rooms - List active rooms")
logger.info(" DELETE /rooms/{n} - Delete room")
logger.info(" GET /health - Health check")
logger.info(" GET /bots - List active bots")
uvicorn.run(app, host=host, port=port, log_level="info")
|