Add initial Restic backup telemetry collector

collectors/backup.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import subprocess
+import json
+
+RESTIC_ENV = "/etc/restic/edge01.env"
+
+
+def collect():
+    cmd = f'. "{RESTIC_ENV}" && restic snapshots --json'
+
+    result = subprocess.run(
+        ["bash", "-c", cmd],
+        capture_output=True,
+        text=True,
+    )
+
+    if result.returncode != 0:
+        return {
+            "state": "offline",
+            "summary": "Restic error",
+            "detail": result.stderr.strip()
+        }
+
+    snapshots = json.loads(result.stdout)
+
+    return {
+        "state": "online",
+        "summary": "Healthy",
+        "detail": f"{len(snapshots)} snapshots",
+        "snapshot_count": len(snapshots)
+    }