Added healthcheck, Added readyz, livez endpoints

app/main.py

@@ -1,7 +1,11 @@
 from fastapi import FastAPI
+from sqlalchemy import text
+from sqlalchemy.exc import SQLAlchemyError
+from starlette.responses import JSONResponse
 
 from app.api.v1 import auth, keys
 from app.core.config import settings
+from app.db.session import AsyncSessionLocal
 
 app = FastAPI(
     title=settings.PROJECT_NAME
@@ -9,7 +13,25 @@ app = FastAPI(
 app.include_router(auth.router, prefix=f"{settings.API_V1_STR}/auth", tags=["auth"])
 app.include_router(keys.router, prefix=f"{settings.API_V1_STR}/keys", tags=["keys"])
 
-# Health endpoint (useful for docker, agent and uptime)
+# Is the API running?
+@app.get("/livez")
+async def livez():
+    return {"status": "ok"}
+
+# Is the application ready (including db)?
+@app.get("/readyz")
+async def readyz():
+    try:
+        async with AsyncSessionLocal() as session:
+            await session.execute(text("SELECT 1"))
+        return {"status": "ok", "db": "up"}
+    except SQLAlchemyError:
+        return JSONResponse(
+            status_code=503,
+            content={"status": "degraded", "db": "down"},
+        )
+
+# Is the application healthy (ready)?
 @app.get("/healthz")
-def healthz():
-    return {"ok": True}
+async def healthz():
+    return await readyz()  # alias

docker-compose.yml.example

@@ -43,6 +43,11 @@ services:
 #    ports: 
 #      - "8000:8000"
     command: uvicorn app.main:app --host 0.0.0.0 --port 8000
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/healthz"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
 
 volumes:
   pgdata: