108 lines
3.8 KiB
Python
108 lines
3.8 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012-2013 eNovance <licensing@enovance.com>
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#
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# Author: Julien Danjou <julien@danjou.info>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import socket
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import msgpack
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from oslo.config import cfg
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from ceilometer import messaging
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from ceilometer.openstack.common.gettextutils import _
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from ceilometer.openstack.common import log
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from ceilometer.openstack.common import service as os_service
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from ceilometer.openstack.common import units
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from ceilometer import service
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OPTS = [
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cfg.StrOpt('udp_address',
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default='0.0.0.0',
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help='Address to which the UDP socket is bound. Set to '
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'an empty string to disable.'),
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cfg.IntOpt('udp_port',
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default=4952,
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help='Port to which the UDP socket is bound.'),
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]
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cfg.CONF.register_opts(OPTS, group="collector")
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cfg.CONF.import_opt('metering_topic', 'ceilometer.publisher.rpc',
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group="publisher_rpc")
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LOG = log.getLogger(__name__)
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class CollectorService(service.DispatchedService, os_service.Service):
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"""Listener for the collector service."""
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@staticmethod
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def rpc_enabled():
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# cfg.CONF opt from oslo.messaging.transport
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return cfg.CONF.rpc_backend or cfg.CONF.transport_url
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def start(self):
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"""Bind the UDP socket and handle incoming data."""
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super(CollectorService, self).start()
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if cfg.CONF.collector.udp_address:
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self.tg.add_thread(self.start_udp)
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if self.rpc_enabled():
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self.rpc_server = messaging.get_rpc_server(
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cfg.CONF.publisher_rpc.metering_topic, self)
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self.rpc_server.start()
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if not cfg.CONF.collector.udp_address:
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# Add a dummy thread to have wait() working
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self.tg.add_timer(604800, lambda: None)
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def start_udp(self):
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udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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udp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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udp.bind((cfg.CONF.collector.udp_address,
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cfg.CONF.collector.udp_port))
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self.udp_run = True
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while self.udp_run:
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# NOTE(jd) Arbitrary limit of 64K because that ought to be
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# enough for anybody.
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data, source = udp.recvfrom(64 * units.Ki)
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try:
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sample = msgpack.loads(data, encoding='utf-8')
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except Exception:
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LOG.warn(_("UDP: Cannot decode data sent by %s"), str(source))
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else:
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try:
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LOG.debug(_("UDP: Storing %s"), str(sample))
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self.dispatcher_manager.map_method('record_metering_data',
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sample)
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except Exception:
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LOG.exception(_("UDP: Unable to store meter"))
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def stop(self):
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self.udp_run = False
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if self.rpc_enabled():
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self.rpc_server.stop()
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super(CollectorService, self).stop()
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def record_metering_data(self, context, data):
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"""RPC endpoint for messages we send to ourselves.
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When the notification messages are re-published through the
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RPC publisher, this method receives them for processing.
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"""
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self.dispatcher_manager.map_method('record_metering_data', data=data)
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