bundles/icinga2: add check_sipgate_account_balance, adjust check_interval

bundles/icinga2/files/check_sipgate_account_balance

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+from requests import get
+from sys import exit
+
+SIPGATE_USER = '${node.metadata['icinga2']['sipgate_user']}'
+SIPGATE_PASS = '${node.metadata['icinga2']['sipgate_pass']}'
+
+try:
+    r = get(
+        'https://api.sipgate.com/v2/balance',
+        auth=(SIPGATE_USER, SIPGATE_PASS),
+        headers={'Accept': 'application/json'},
+    )
+
+    if r.status_code == 401:
+        # Status code 401 means our login data is wrong. Since we're
+        # using the same login data in icinga_notification_wrapper, we
+        # won't be able to send SMS either. This should *not* result in
+        # this check going UNKNOWN.
+        print('CRITICAL: Getting the account balance failed with status code 401!')
+        exit(2)
+    else:
+        r.raise_for_status()
+except Exception as e:
+    print(repr(e))
+    exit(3)
+
+# No, we can't combine those two try..except blocks, because a connection
+# error means the check is UNKNOWN, but a parsing error is CRITICAL.
+try:
+    json = r.json()
+    money = json['amount']/10000
+
+    if money < 2:
+        print('CRITICAL: Only {} {} left in account!'.format(money, json['currency']))
+        exit(2)
+    elif money < 3:
+        print('WARNING: Only {} {} left in account!'.format(money, json['currency']))
+        exit(1)
+    else:
+        print('Account holds {} {}.'.format(money, json['currency']))
+        exit(0)
+except Exception as e:
+    # API changed, returned malformed JSON or whatever. This is an error.
+    print(repr(e))
+    exit(2)

bundles/icinga2/files/icinga2/check_commands.conf

@@ -79,6 +79,13 @@ object CheckCommand "check_imap" {
     }
 }
 
+object CheckCommand "check_sipgate_account_balance" {
+    import "plugin-check-command"
+    import "ipv4-or-ipv6"
+
+    command = [ "/usr/local/share/icinga/plugins/check_sipgate_account_balance" ]
+}
+
 object CheckCommand "check_smtp" {
     import "plugin-check-command"
     import "ipv4-or-ipv6"