make last state persistent, fix exceptions

monitor.py

@@ -4,6 +4,8 @@ import time
 import logging
 import datetime
 import socket
+import json
+import os
 
 import requests
 import pydig
@@ -62,7 +64,7 @@ def self_check():
     try:
         if requests.get("https://google.com/").status_code != 200:
             return False
-    except ConnectionError:
+    except requests.exceptions.ConnectionError:
         return False
     return True
 
@@ -72,7 +74,7 @@ def http_requirement(url: str, code: int) -> bool:
     for i in range(2):
         try:
             resp = requests.get(url)
-        except ConnectionError:
+        except requests.exceptions.ConnectionError:
             passed = False
         else:
             passed = resp.status_code == code
@@ -140,4 +142,11 @@ monitors = {
 if __name__ == '__main__':
     # we assume this is gonna be run in a cron job as the gitpython
     # library is slowly leaking memory apparently
+    if os.path.exists("last-state"):
+        with open("last-state", 'r') as f:
+            last_states = json.load(f)
+
     check(monitors)
+
+    with open("last-state", 'w+') as f:
+        json.dump(last_states, f)