From 31747c4bd317684c809174b0659c0724db596c17 Mon Sep 17 00:00:00 2001
From: Jared Vititoe <jjvititoe1@gmail.com>
Date: Wed, 13 May 2026 15:34:41 -0400
Subject: [PATCH] Replace deprecated datetime.utcnow() with
 datetime.now(timezone.utc)

datetime.utcnow() is deprecated in Python 3.12 and removed in 3.13.
Replace all four call sites with timezone-aware equivalents so the
codebase is ready for Python 3.12+.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 db.py      | 4 ++--
 monitor.py | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/db.py b/db.py
index 3e60cd2..7760154 100644
--- a/db.py
+++ b/db.py
@@ -3,7 +3,7 @@ import json
 import logging
 import threading
 from contextlib import contextmanager
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from typing import Optional
 
 import pymysql
@@ -281,7 +281,7 @@ def create_suppression(
 ) -> int:
     expires_at = None
     if expires_minutes:
-        expires_at = datetime.utcnow() + timedelta(minutes=int(expires_minutes))
+        expires_at = datetime.now(timezone.utc) + timedelta(minutes=int(expires_minutes))
     with get_conn() as conn:
         with conn.cursor() as cur:
             cur.execute(
diff --git a/monitor.py b/monitor.py
index 8a928a9..f872999 100644
--- a/monitor.py
+++ b/monitor.py
@@ -12,7 +12,7 @@ import logging
 import re
 import shlex
 import time
-from datetime import datetime
+from datetime import datetime, timezone
 from typing import Dict, List, Optional
 
 import requests
@@ -618,7 +618,7 @@ class LinkStatsCollector:
         return {
             'hosts':          result_hosts,
             'unifi_switches': unifi_switches,
-            'updated':        datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S UTC'),
+            'updated':        datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M:%S UTC'),
         }
 
     def _compute_unifi_rates(self, raw: Dict[str, dict], now: float) -> Dict[str, dict]:
@@ -653,7 +653,7 @@ class LinkStatsCollector:
 # Helpers
 # --------------------------------------------------------------------------
 def _now_utc() -> str:
-    return datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S UTC')
+    return datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M:%S UTC')
 
 
 # --------------------------------------------------------------------------
@@ -921,7 +921,7 @@ class NetworkMonitor:
         return {
             'hosts': hosts,
             'unifi': display_unifi,
-            'updated': datetime.utcnow().isoformat() + 'Z',
+            'updated': datetime.now(timezone.utc).isoformat().replace('+00:00', 'Z'),
         }
 
     # ------------------------------------------------------------------