designate/designate/agent/service.py

71 lines
2.1 KiB
Python

# Copyright 2014 Rackspace Inc.
#
# Author: Tim Simmons <tim.simmons@rackspace.com>
#
# 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.
"""
agent.service
~~~~~~~~~~~~~
Typically runs on the resolver hosts. Listen for incoming DNS requests
on a port different than 53 and execute create_zone/delete_zone on the
backend adaptor (e.g. Bind9)
Configured in [service:agent]
"""
from oslo_config import cfg
from designate import utils
from designate import dnsutils
from designate import service
from designate.agent import handler
from designate.backend import agent_backend
CONF = cfg.CONF
class Service(service.DNSService, service.Service):
_dns_default_port = 5358
def __init__(self, threads=None):
super(Service, self).__init__(threads=threads)
backend_driver = cfg.CONF['service:agent'].backend_driver
self.backend = agent_backend.get_backend(backend_driver, self)
@property
def service_name(self):
return 'agent'
@property
@utils.cache_result
def _dns_application(self):
# Create an instance of the RequestHandler class
application = handler.RequestHandler()
if cfg.CONF['service:agent'].notify_delay > 0.0:
application = dnsutils.LimitNotifyMiddleware(application)
application = dnsutils.SerializationMiddleware(application)
return application
def start(self):
super(Service, self).start()
self.backend.start()
def stop(self):
super(Service, self).stop()
# TODO(kiall): Shouldn't we be stppping the backend here too? To fix
# in another review.