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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
"""
Thresholds classes: OK, CAREFUL, WARNING, CRITICAL
"""
import sys
from functools import total_ordering
class GlancesThresholds(object):
"""Class to manage thresholds dict for all Glances plugins:
key: Glances stats (example: cpu_user)
value: Threshold instance
"""
threshold_list = ['OK', 'CAREFUL', 'WARNING', 'CRITICAL']
def __init__(self):
self.current_module = sys.modules[__name__]
self._thresholds = {}
def get(self, stat_name=None):
"""Return the threshold dict.
If stat_name is None, return the threshold for all plugins (dict of Threshold*)
Else return the Threshold* instance for the given plugin
"""
if stat_name is None:
return self._thresholds
if stat_name in self._thresholds:
return self._thresholds[stat_name]
else:
return {}
def add(self, stat_name, threshold_description):
"""Add a new threshold to the dict (key = stat_name)"""
if threshold_description not in self.threshold_list:
return False
else:
self._thresholds[stat_name] = getattr(
self.current_module, 'GlancesThreshold' + threshold_description.capitalize()
)()
return True
# Global variable uses to share thresholds between Glances components
glances_thresholds = GlancesThresholds()
@total_ordering
class _GlancesThreshold(object):
"""Father class for all other Thresholds"""
def description(self):
return self._threshold['description']
def value(self):
return self._threshold['value']
def __repr__(self):
return str(self._threshold)
def __str__(self):
return self.description()
def __lt__(self, other):
return self.value() < other.value()
def __eq__(self, other):
return self.value() == other.value()
class GlancesThresholdOk(_GlancesThreshold):
"""Ok Threshold class"""
_threshold = {'description': 'OK', 'value': 0}
class GlancesThresholdCareful(_GlancesThreshold):
"""Careful Threshold class"""
_threshold = {'description': 'CAREFUL', 'value': 1}
class GlancesThresholdWarning(_GlancesThreshold):
"""Warning Threshold class"""
_threshold = {'description': 'WARNING', 'value': 2}
class GlancesThresholdCritical(_GlancesThreshold):
"""Warning Threshold class"""
_threshold = {'description': 'CRITICAL', 'value': 3}