152 lines
5.7 KiB
Python
152 lines
5.7 KiB
Python
# Copyright 2016 Red Hat, Inc.
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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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#
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# To enable in nova, put this into [DEFAULT]
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# notification_driver = messaging
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# notification_topic = notifications
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# notify_on_state_change = vm_state
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import sys
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import time
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from novajoin.ipa import IPAClient
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import oslo_messaging
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from neutronclient.v2_0 import client as neutron_client
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from novaclient import client as nova_client
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from novajoin.keystone_client import get_session, register_keystoneauth_opts
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from novajoin import config
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from novajoin import cache
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from oslo_serialization import jsonutils
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from oslo_log import log as logging
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CONF = config.CONF
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LOG = logging.getLogger(__name__)
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def novaclient():
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session = get_session()
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return nova_client.Client('2.1', session=session)
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def neutronclient():
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session = get_session()
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return neutron_client.Client(session=session)
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class NotificationEndpoint(object):
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filter_rule = oslo_messaging.notify.filter.NotificationFilter(
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publisher_id='^compute.*|^network.*',
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event_type='^compute.instance.create.end|'
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'^compute.instance.delete.end|'
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'^network.floating_ip.(dis)?associate|'
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'^floatingip.update.end')
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def __init__(self):
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self.ipaclient = IPAClient()
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self.uuidcache = cache.Cache()
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def _generate_hostname(self, hostname):
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# FIXME: Don't re-calculate the hostname, fetch it from somewhere
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project = 'foo'
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if CONF.project_subdomain:
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host = '%s.%s.%s' % (hostname, project, CONF.domain)
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else:
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host = '%s.%s' % (hostname, CONF.domain)
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return host
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def info(self, ctxt, publisher_id, event_type, payload, metadata):
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LOG.debug('notification:')
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LOG.debug(jsonutils.dumps(payload, indent=4))
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LOG.debug("publisher: %s, event: %s, metadata: %s", publisher_id,
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event_type, metadata)
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if event_type == 'compute.instance.create.end':
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hostname = self._generate_hostname(payload.get('hostname'))
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instance_id = payload.get('instance_id')
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LOG.info("Add new host %s (%s)", instance_id, hostname)
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elif event_type == 'compute.instance.delete.end':
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hostname = self._generate_hostname(payload.get('hostname'))
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instance_id = payload.get('instance_id')
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LOG.info("Delete host %s (%s)", instance_id, hostname)
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self.uuidcache.delete(instance_id)
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self.ipaclient.delete_host(hostname, {})
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elif event_type == 'network.floating_ip.associate':
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floating_ip = payload.get('floating_ip')
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LOG.info("Associate floating IP %s" % floating_ip)
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nova = novaclient()
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server = nova.servers.get(payload.get('instance_id'))
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if server:
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self.ipaclient.add_ip(server.get, floating_ip)
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else:
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LOG.error("Could not resolve %s into a hostname",
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payload.get('instance_id'))
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elif event_type == 'network.floating_ip.disassociate':
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floating_ip = payload.get('floating_ip')
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LOG.info("Disassociate floating IP %s" % floating_ip)
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nova = novaclient()
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server = nova.servers.get(payload.get('instance_id'))
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if server:
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self.ipaclient.remove_ip(server.name, floating_ip)
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else:
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LOG.error("Could not resolve %s into a hostname",
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payload.get('instance_id'))
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elif event_type == 'floatingip.update.end': # Neutron
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floatingip = payload.get('floatingip')
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floating_ip = floatingip.get('floating_ip_address')
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port_id = floatingip.get('port_id')
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LOG.info("Neutron floating IP associate: %s" % floating_ip)
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nova = novaclient()
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neutron = neutronclient()
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search_opts = {'id': port_id}
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ports = neutron.list_ports(**search_opts).get('ports')
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if len(ports) == 1:
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device_id = ports[0].get('device_id')
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if device_id:
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server = nova.servers.get(device_id)
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if server:
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self.ipaclient.add_ip(server.name, floating_ip)
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else:
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LOG.error("Expected 1 port, got %d", len(ports))
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else:
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LOG.error("Status update or unknown")
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def main():
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register_keystoneauth_opts(CONF)
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CONF(sys.argv[1:], project='join', version='1.0.4')
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logging.setup(CONF, 'join')
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transport = oslo_messaging.get_transport(CONF)
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targets = [oslo_messaging.Target(topic='notifications')]
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endpoints = [NotificationEndpoint()]
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server = oslo_messaging.get_notification_listener(transport,
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targets,
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endpoints,
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executor='threading',
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allow_requeue=True)
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LOG.info("Starting")
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server.start()
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try:
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while True:
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time.sleep(1)
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except KeyboardInterrupt:
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LOG.info("Stopping, be patient")
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server.stop()
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server.wait()
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