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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
#
"""Graphite interface class."""
import sys
from numbers import Number
from glances.logger import logger
from glances.exports.glances_export import GlancesExport
from graphitesend import GraphiteClient
class Export(GlancesExport):
"""This class manages the Graphite export module."""
def __init__(self, config=None, args=None):
"""Init the Graphite export IF."""
super(Export, self).__init__(config=config, args=args)
# Mandatory configuration keys (additional to host and port)
# N/A
# Optional configuration keys
self.debug = False
self.prefix = None
self.system_name = None
# Load the configuration file
self.export_enable = self.load_conf('graphite', mandatories=['host', 'port'], options=['prefix', 'system_name'])
if not self.export_enable:
sys.exit(2)
# Default prefix for stats is 'glances'
if self.prefix is None:
self.prefix = 'glances'
# Convert config option type
self.port = int(self.port)
# Init the Graphite client
self.client = self.init()
def init(self):
"""Init the connection to the Graphite server."""
client = None
if not self.export_enable:
return client
try:
if self.system_name is None:
client = GraphiteClient(
graphite_server=self.host,
graphite_port=self.port,
prefix=self.prefix,
lowercase_metric_names=True,
debug=self.debug,
)
else:
client = GraphiteClient(
graphite_server=self.host,
graphite_port=self.port,
prefix=self.prefix,
system_name=self.system_name,
lowercase_metric_names=True,
debug=self.debug,
)
except Exception as e:
logger.error("Can not write data to Graphite server: {}:{} ({})".format(self.host, self.port, e))
client = None
else:
logger.info("Stats will be exported to Graphite server: {}:{}".format(self.host, self.port))
return client
def export(self, name, columns, points):
"""Export the stats to the Graphite server."""
if self.client is None:
return False
before_filtering_dict = dict(zip([normalize('{}.{}'.format(name, i)) for i in columns], points))
after_filtering_dict = dict(filter(lambda i: isinstance(i[1], Number), before_filtering_dict.items()))
try:
self.client.send_dict(after_filtering_dict)
except Exception as e:
logger.error("Can not export stats to Graphite (%s)" % e)
return False
else:
logger.debug("Export {} stats to Graphite".format(name))
return True
def normalize(name):
"""Normalize name for the Graphite convention"""
# Name should not contain space
ret = name.replace(' ', '_')
return ret