Prepare btcprice for Kubernetes deployment

app/main.py

@@ -12,7 +12,9 @@ from fastapi.staticfiles import StaticFiles
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger("btcprice")
 
-BTCDATA_URL = os.environ.get("BTCDATA_URL", "http://localhost:4100")
+BTCDATA_URL = os.environ.get("BTCDATA_URL", "http://localhost:4100").rstrip("/")
+APP_VERSION = os.environ.get("APP_VERSION", "development")
+READINESS_TIMEOUT_SECONDS = 3.0
 
 app = FastAPI()
 
@@ -133,6 +135,26 @@ async def health():
     return {"status": "up"}
 
 
+@app.get("/api/ready")
+async def ready():
+    """Report readiness only while the btcdata dependency is healthy."""
+    url = f"{BTCDATA_URL}/api/health"
+    try:
+        async with httpx.AsyncClient() as client:
+            response = await client.get(url, timeout=READINESS_TIMEOUT_SECONDS)
+            response.raise_for_status()
+    except httpx.HTTPError:
+        logger.warning("btcdata readiness check failed for %s", url)
+        return JSONResponse(content={"status": "not ready"}, status_code=503)
+
+    return {"status": "ready"}
+
+
+@app.get("/api/version")
+async def version():
+    return {"version": APP_VERSION}
+
+
 async def _proxy_btcdata_json(path: str) -> JSONResponse:
     url = f"{BTCDATA_URL}{path}"
     try: