95 lines
3.0 KiB
Python
95 lines
3.0 KiB
Python
import asyncio
|
|
import json
|
|
from contextlib import asynccontextmanager
|
|
from fastapi import FastAPI
|
|
from fastapi.middleware.cors import CORSMiddleware
|
|
from sse_starlette.sse import EventSourceResponse
|
|
|
|
from app.config.settings import get_settings
|
|
from app.storage.database import init_db, AsyncSessionLocal
|
|
from app.storage.models import RequestRecord
|
|
from app.api.routes import router as api_router
|
|
from sqlalchemy import select, desc
|
|
|
|
settings = get_settings()
|
|
|
|
|
|
@asynccontextmanager
|
|
async def lifespan(app: FastAPI):
|
|
# Initialize SQLite database and seed defaults
|
|
await init_db()
|
|
yield
|
|
|
|
|
|
app = FastAPI(
|
|
title="Model Router",
|
|
description="Intelligent LLM Request Routing Platform — AI Traffic Control Room",
|
|
version="1.0.0",
|
|
lifespan=lifespan,
|
|
)
|
|
|
|
# CORS configuration
|
|
app.add_middleware(
|
|
CORSMiddleware,
|
|
allow_origins=["*"],
|
|
allow_credentials=True,
|
|
allow_methods=["*"],
|
|
allow_headers=["*"],
|
|
)
|
|
|
|
app.include_router(api_router)
|
|
|
|
|
|
@app.get("/api/traffic/stream")
|
|
async def stream_live_traffic():
|
|
"""
|
|
SSE Live Stream endpoint for the Traffic Control Room visualization.
|
|
Pushes newly persisted requests to connected frontend clients.
|
|
"""
|
|
async def event_generator():
|
|
last_seen_id = None
|
|
while True:
|
|
try:
|
|
async with AsyncSessionLocal() as session:
|
|
res = await session.execute(
|
|
select(RequestRecord).order_by(desc(RequestRecord.timestamp)).limit(1)
|
|
)
|
|
latest = res.scalar_one_or_none()
|
|
if latest and latest.request_id != last_seen_id:
|
|
last_seen_id = latest.request_id
|
|
payload = {
|
|
"request_id": latest.request_id,
|
|
"timestamp": latest.timestamp.isoformat() if latest.timestamp else "",
|
|
"prompt": latest.prompt,
|
|
"task_type": latest.task_type,
|
|
"complexity": latest.complexity,
|
|
"selected_model": latest.selected_model,
|
|
"provider": latest.provider,
|
|
"status": latest.status,
|
|
"total_latency_ms": latest.total_latency_ms,
|
|
"estimated_cost": latest.estimated_cost,
|
|
}
|
|
yield {
|
|
"event": "traffic_event",
|
|
"data": json.dumps(payload),
|
|
}
|
|
except Exception:
|
|
pass
|
|
await asyncio.sleep(1.5)
|
|
|
|
return EventSourceResponse(event_generator())
|
|
|
|
|
|
@app.get("/")
|
|
async def root():
|
|
return {
|
|
"message": "Model Router AI Control Room Backend is active.",
|
|
"docs": "/docs",
|
|
"health": "/api/health",
|
|
}
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import uvicorn
|
|
uvicorn.run("main:app", host=settings.HOST, port=settings.PORT, reload=settings.DEBUG)
|