Development

routlin/mod_metrics.py

@@ -6,7 +6,9 @@ and accumulates lifetime totals in a JSON file.
 """
 
 import json
+import os
 import re
+import signal
 import subprocess
 import time
 from datetime import datetime
@@ -42,14 +44,13 @@ def collect_metrics(data):
 
     any_running = False
     for vlan in data["vlans"]:
-        svc = shared.vlan_service_name(vlan, validation.derive_interface(vlan, data))
-        result = subprocess.run(
-            ["systemctl", "kill", "--signal=SIGUSR1", svc],
-            capture_output=True, text=True
-        )
-        if result.returncode != 0:
+        pid_file = shared.vlan_pid_file(vlan)
+        try:
+            pid = int(pid_file.read_text().strip())
+            os.kill(pid, signal.SIGUSR1)
+            any_running = True
+        except Exception:
             continue
-        any_running = True
 
     if not any_running:
         print("No dnsmasq instances are running.")