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# 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.agent import handler
from designate.backend import agent_backend
from designate.conf.agent import DEFAULT_AGENT_PORT
from designate import dnsutils
from designate import service
from designate import utils
CONF = cfg.CONF
class Service(service.Service):
_dns_default_port = DEFAULT_AGENT_PORT
def __init__(self):
super(Service, self).__init__(
self.service_name, threads=cfg.CONF['service:agent'].threads
)
self.dns_service = service.DNSService(
self.dns_application, self.tg,
cfg.CONF['service:agent'].listen,
cfg.CONF['service:agent'].tcp_backlog,
cfg.CONF['service:agent'].tcp_recv_timeout,
)
backend_driver = cfg.CONF['service:agent'].backend_driver
self.backend = agent_backend.get_backend(backend_driver, self)
def start(self):
super(Service, self).start()
self.dns_service.start()
self.backend.start()
def stop(self, graceful=True):
self.dns_service.stop()
self.backend.stop()
super(Service, self).stop(graceful)
@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
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