add support for zabbix as alternative to nagios

Author: smoors

lib/vsc/utils/script_tools.py

@@ -42,7 +42,7 @@
 from vsc.utils.generaloption import SimpleOption
 from vsc.utils.lock import lock_or_bork, release_or_bork, LOCKFILE_DIR, LOCKFILE_FILENAME_TEMPLATE
 from vsc.utils.nagios import (
-    SimpleNagios, NAGIOS_CACHE_DIR, NAGIOS_CACHE_FILENAME_TEMPLATE, exit_from_errorcode,
+    SimpleZabbix, SimpleNagios, NAGIOS_CACHE_DIR, NAGIOS_CACHE_FILENAME_TEMPLATE, exit_from_errorcode,
     NAGIOS_EXIT_OK, NAGIOS_EXIT_WARNING, NAGIOS_EXIT_CRITICAL, NAGIOS_EXIT_UNKNOWN,
 )
 from vsc.utils.timestamp import (
@@ -140,18 +140,18 @@ def __init__(self, options, run_prologue=True, excepthook=None, **kwargs):
 
         self.log = fancylogger.getLogger()
 
-    def prologue(self):
+    def prologue(self, MonitorClass=SimpleNagios):
         """Checks the options given for settings and takes appropriate action.
 
         See _merge_options for the format.
-
-        - if nagios_report is set, creates a SimpleNagios instance and prints the report.
+        - MonitorClass: the class to use for interaction with the monitoring software
+        - if nagios_report is set, creates a MonitorClass instance and prints the report.
         - if ha is set, checks if running on the correct host, set the appropriate nagios message and bail if not.
         - if locking_filename is set, take a lock. If the lock fails, bork and set the nagios exit accordingly.
         """
 
         # bail if nagios report is requested
-        self.nagios_reporter = SimpleNagios(_cache=self.options.nagios_check_filename,
+        self.nagios_reporter = MonitorClass(_cache=self.options.nagios_check_filename,
                                             _report_and_exit=self.options.nagios_report,
                                             _threshold=self.options.nagios_check_interval_threshold,
                                             _cache_user=self.options.nagios_user,

lib/vsc/utils/zabbix.py

@@ -0,0 +1,44 @@
+
+# -*- encoding: utf-8 -*-
+#
+# Copyright 2012-2021 Ghent University
+#
+# This file is part of vsc-utils,
+# originally created by the HPC team of Ghent University (http://ugent.be/hpc/en),
+# with support of Ghent University (http://ugent.be/hpc),
+# the Flemish Supercomputer Centre (VSC) (https://www.vscentrum.be),
+# the Flemish Research Foundation (FWO) (http://www.fwo.be/en)
+# and the Department of Economy, Science and Innovation (EWI) (http://www.ewi-vlaanderen.be/en).
+#
+# https://github.com/hpcugent/vsc-utils
+#
+# vsc-utils is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation, either version 2 of
+# the License, or (at your option) any later version.
+#
+# vsc-utils is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public License
+# along with vsc-utils. If not, see <http://www.gnu.org/licenses/>.
+#
+"""
+This module adapts the nagios module so its output can be interpreted by Zabbix.
+
+@author: Samuel Moors (Vrije Universiteit Brussel)
+"""
+
+import json
+
+from vsc.utils.nagios import SimpleNagios
+
+
+class SimpleZabbix(SimpleNagios):
+    def __str__(self):
+        """__str__ determines how the data is written to the cache"""
+        processed_dict = {key: value for (key, value) in self.__dict__.items() if not key.startswith('_')}
+        return json.dumps(processed_dict)
+