DoorController: Use an exception instead of sys.exit

hid/DoorController.py

@@ -1,4 +1,3 @@
-import sys
 from lxml import etree
 from lxml.builder import ElementMaker
 import requests
@@ -10,6 +9,11 @@ ROOT = E_plain.VertXMessage
 
 fieldnames = "CardNumber,CardFormat,PinRequired,PinCode,ExtendedAccess,ExpiryDate,Forename,Initial,Surname,Email,Phone,Custom1,Custom2,Schedule1,Schedule2,Schedule3,Schedule4,Schedule5,Schedule6,Schedule7,Schedule8".split(",")
 
+class RemoteError(Exception):
+    def __init__(self, r):
+        super().__init__(
+            f"Door Updating Error: {r.status_code} {r.reason}\n{r.text}")
+
 class DoorController():
     def __init__(self, ip, username, password, name="", access=""):
         self.ip = ip
@@ -30,9 +34,7 @@ class DoorController():
         xml = etree.XML(r.content)
         if r.status_code != 200 \
            or len(xml.findall("{http://www.hidglobal.com/VertX}Error")) > 0:
-            print("Door Updating Error: ", r.status_code, r.reason)
-            print(r.text)
-            sys.exit(1)
+            raise RemoteError(r)
 
     def doCSVImport(self, csv):
         """Do the CSV import procedure on a door control"""
@@ -52,9 +54,7 @@ class DoorController():
         # probably meed to be more sane about this
         if r.status_code != 200 \
            or len(resp_xml.findall("{*}Error")) > 0:
-            print("Door Updating Error: ", r.status_code, r.reason)
-            print(r.text)
-            sys.exit(1)
+            raise RemoteError(r)
         return resp_xml
 
     def sendSchedules(self):