Implement Monlet MVP stack and UI updates

server/monlet_server/main.py

@@ -0,0 +1,74 @@
+import asyncio
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+from fastapi.responses import Response
+
+from . import metrics
+from .api import agents, checks, events, health, heartbeat, incidents, outbox
+from .db import dispose_engine, get_engine, get_sessionmaker
+from .errors import install_error_handlers
+from .logging_config import configure_logging, get_logger
+from .middleware.auth import BearerAuthMiddleware
+from .middleware.body_limit import BodyLimitMiddleware
+from .middleware.request_id import RequestIdMiddleware
+from .services.detector import run_detector
+from .services.notifier_worker import run_notifier_worker
+from .settings import get_settings
+
+log = get_logger("monlet.main")
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    s = get_settings()
+    configure_logging(s.log_level)
+    get_engine()
+    sm = get_sessionmaker()
+    stop_event = asyncio.Event()
+    tasks: list[asyncio.Task] = []
+    if s.enable_detector:
+        tasks.append(asyncio.create_task(run_detector(sm, stop_event), name="detector"))
+    if s.enable_notifier_worker:
+        tasks.append(
+            asyncio.create_task(run_notifier_worker(sm, stop_event), name="notifier_worker")
+        )
+    log.info("server_started", host=s.host, port=s.port)
+    try:
+        yield
+    finally:
+        stop_event.set()
+        for t in tasks:
+            try:
+                await asyncio.wait_for(t, timeout=5.0)
+            except TimeoutError:
+                t.cancel()
+        await dispose_engine()
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(title="Monlet Server", version="1.0.0", lifespan=lifespan)
+
+    app.add_middleware(BearerAuthMiddleware)
+    app.add_middleware(BodyLimitMiddleware)
+    app.add_middleware(RequestIdMiddleware)
+
+    install_error_handlers(app)
+
+    app.include_router(health.router, prefix="/api/v1")
+    app.include_router(heartbeat.router, prefix="/api/v1")
+    app.include_router(events.router, prefix="/api/v1")
+    app.include_router(agents.router, prefix="/api/v1")
+    app.include_router(checks.router, prefix="/api/v1")
+    app.include_router(incidents.router, prefix="/api/v1")
+    app.include_router(outbox.router, prefix="/api/v1")
+
+    @app.get("/metrics")
+    async def metrics_endpoint() -> Response:
+        body, ct = metrics.render()
+        return Response(content=body, media_type=ct)
+
+    return app
+
+
+app = create_app()