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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
#
"""JMS interface class."""
import datetime
import socket
import sys
from numbers import Number
from glances.compat import range
from glances.logger import logger
from glances.exports.glances_export import GlancesExport
# Import pika for RabbitMQ
import pika
class Export(GlancesExport):
"""This class manages the rabbitMQ export module."""
def __init__(self, config=None, args=None):
"""Init the RabbitMQ export IF."""
super(Export, self).__init__(config=config, args=args)
# Mandatory configuration keys (additional to host and port)
self.user = None
self.password = None
self.queue = None
self.protocol = None
# Optionals configuration keys
# N/A
# Load the rabbitMQ configuration file
self.export_enable = self.load_conf(
'rabbitmq', mandatories=['host', 'port', 'user', 'password', 'queue'], options=['protocol']
)
if not self.export_enable:
exit('Missing RABBITMQ config')
# Get the current hostname
self.hostname = socket.gethostname()
# Init the rabbitmq client
self.client = self.init()
def init(self):
"""Init the connection to the rabbitmq server."""
if not self.export_enable:
return None
# Needed for when protocol is not specified and when protocol is upper case
# only amqp and amqps supported
if self.protocol is not None and (self.protocol.lower() == 'amqps'):
self.protocol = 'amqps'
else:
self.protocol = 'amqp'
try:
parameters = pika.URLParameters(
self.protocol + '://' + self.user + ':' + self.password + '@' + self.host + ':' + self.port + '/'
)
connection = pika.BlockingConnection(parameters)
channel = connection.channel()
return channel
except Exception as e:
logger.critical("Connection to rabbitMQ server %s:%s failed. %s" % (self.host, self.port, e))
sys.exit(2)
def export(self, name, columns, points):
"""Write the points in RabbitMQ."""
data = 'hostname=' + self.hostname + ', name=' + name + ', dateinfo=' + datetime.datetime.utcnow().isoformat()
for i in range(len(columns)):
if not isinstance(points[i], Number):
continue
else:
data += ", " + columns[i] + "=" + str(points[i])
logger.debug(data)
try:
self.client.basic_publish(exchange='', routing_key=self.queue, body=data)
except Exception as e:
logger.error("Can not export stats to RabbitMQ (%s)" % e)