models on tracker

packages/tracker/meshnet_tracker/server.py

@@ -33,6 +33,7 @@ import random
 import select
 import socketserver
 import sqlite3
+import sys
 import tarfile
 import threading
 import time
@@ -6738,19 +6739,32 @@ class TrackerServer:
                 delivered_all = False
         return delivered_all
 
+    def _save_stats_once(self) -> None:
+        """Persist each store independently so one DB failure cannot kill the loop."""
+        registry_log = getattr(self._contracts, "registry_log", None)
+        stores = (
+            ("request stats", self._stats),
+            ("route stats", self._route_stats),
+            ("billing", self._billing),
+            ("accounts", self._accounts),
+            ("registry", registry_log),
+        )
+        for label, store in stores:
+            if store is None:
+                continue
+            try:
+                store.save_to_db()
+            except Exception as exc:
+                print(
+                    f"[tracker] warn: {label} persistence failed: {exc}",
+                    file=sys.stderr,
+                    flush=True,
+                )
+
     def _stats_loop(self) -> None:
         """Periodically save stats/billing to DB and push local slices to cluster peers."""
         while not self._stats_stop.wait(_StatsCollector.SAVE_INTERVAL):
-            if self._stats is not None:
-                self._stats.save_to_db()
-            self._route_stats.save_to_db()
-            if self._billing is not None:
-                self._billing.save_to_db()
-            if self._accounts is not None:
-                self._accounts.save_to_db()
-            registry_log = getattr(self._contracts, "registry_log", None)
-            if registry_log is not None:
-                registry_log.save_to_db()
+            self._save_stats_once()
             if self._cluster_peers and not self._hive_secret:
                 print(
                     "[tracker] WARNING: cluster peers configured without --hive-secret — "