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# Copyright 2012 Managed I.T.
#
# Author: Kiall Mac Innes <kiall@managedit.ie>
#
# 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.
import abc
from oslo_config import cfg
from oslo_log import log as logging
from designate.context import DesignateContext
from designate.plugin import DriverPlugin
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class Backend(DriverPlugin):
"""Base class for backend implementations"""
__plugin_type__ = 'backend'
__plugin_ns__ = 'designate.backend'
__backend_status__ = 'untested'
def __init__(self, target):
super(Backend, self).__init__()
self.target = target
self.options = target.options
self.masters = target.masters
self.host = self.options.get('host', '127.0.0.1')
self.port = int(self.options.get('port', 53))
# TODO(kiall): Context's should never be shared across requests.
self.admin_context = DesignateContext.get_admin_context()
self.admin_context.all_tenants = True
# Options for sending NOTIFYs
self.timeout = CONF['service:worker'].poll_timeout
self.retry_interval = CONF['service:worker'].poll_retry_interval
self.max_retries = CONF['service:worker'].poll_max_retries
self.delay = CONF['service:worker'].poll_delay
# Core Backend Interface
@abc.abstractmethod
def create_zone(self, context, zone):
"""
Create a DNS zone.
:param context: Security context information.
:param zone: the DNS zone.
"""
def update_zone(self, context, zone):
"""
Update a DNS zone.
:param context: Security context information.
:param zone: the DNS zone.
"""
LOG.debug('Update Zone')
@abc.abstractmethod
def delete_zone(self, context, zone):
"""
Delete a DNS zone.
:param context: Security context information.
:param zone: the DNS zone.
"""
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