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#
# Copyright 2013 eNovance
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Publish a sample using an UDP mechanism
"""
import socket
import msgpack
from oslo_log import log
from oslo_utils import netutils
import ceilometer
from ceilometer.i18n import _
from ceilometer import publisher
from ceilometer.publisher import utils
LOG = log.getLogger(__name__)
class UDPPublisher(publisher.ConfigPublisherBase):
def __init__(self, conf, parsed_url):
super(UDPPublisher, self).__init__(conf, parsed_url)
self.host, self.port = netutils.parse_host_port(
parsed_url.netloc, default_port=4952)
addrinfo = None
try:
addrinfo = socket.getaddrinfo(self.host, None, socket.AF_INET6,
socket.SOCK_DGRAM)[0]
except socket.gaierror:
try:
addrinfo = socket.getaddrinfo(self.host, None, socket.AF_INET,
socket.SOCK_DGRAM)[0]
except socket.gaierror:
pass
if addrinfo:
addr_family = addrinfo[0]
else:
LOG.warning(
"Cannot resolve host %s, creating AF_INET socket...",
self.host)
addr_family = socket.AF_INET
self.socket = socket.socket(addr_family,
socket.SOCK_DGRAM)
def publish_samples(self, samples):
"""Send a metering message for publishing
:param samples: Samples from pipeline after transformation
"""
for sample in samples:
msg = utils.meter_message_from_counter(
sample, self.conf.publisher.telemetry_secret)
host = self.host
port = self.port
LOG.debug("Publishing sample %(msg)s over UDP to "
"%(host)s:%(port)d", {'msg': msg, 'host': host,
'port': port})
try:
self.socket.sendto(msgpack.dumps(msg, use_bin_type=True),
(self.host, self.port))
except Exception as e:
LOG.warning(_("Unable to send sample over UDP"))
LOG.exception(e)
def publish_events(self, events):
"""Send an event message for publishing
:param events: events from pipeline after transformation
"""
raise ceilometer.NotImplementedError
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