remote-monitor: add a simple service which checks if NIPA is running

Add a script which can be run on a laptop or such,
which fetches the status of NIPA from remote URL (the json
which NIPA renders) and shows a pop up when something fails.

Status for netdev can be fetched from:

  https://netdev.bots.linux.dev/static/nipa/systemd.json

the script takes the URL as the first (and only) arg.

Signed-off-by: Jakub Kicinski <[email protected]>

Author: kuba-moo

remote-monitor.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
+
+import json
+import os
+import requests
+import subprocess
+import time
+
+
+def notify(hdr: str, msg: str) -> None:
+    subprocess.check_output(["notify-send", hdr, msg])
+
+
+def main() -> None:
+    while True:
+        try:
+            r = requests.get(os.sys.argv[1])
+            js = json.loads(r.content.decode('utf-8'))
+
+            good = 0
+            bad = []
+            for name in js["services"]:
+                s = js["services"][name]
+                if s["ActiveState"] == "active" and s["SubState"] == "running":
+                    good += 1
+                elif isinstance(s.get("TriggeredBy", 0), str) and s["Result"] == "success":
+                    good += 1
+                else:
+                    bad.append(name)
+
+            if bad:
+                notify("NIPA", f"Services in bad state: {bad} (good cnt: {good})")
+        except Exception:
+            notify("NIPA", "checking status failed")
+            raise
+        time.sleep(30)
+
+
+if __name__ == "__main__":
+    main()