108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
# Copyright 2012 Managed I.T.
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#
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# Author: Kiall Mac Innes <kiall@managedit.ie>
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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 abc
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from oslo_config import cfg
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from oslo_log import log as logging
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from designate.i18n import _LI
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from designate.context import DesignateContext
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from designate.plugin import DriverPlugin
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from designate.mdns import rpcapi as mdns_api
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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CONF.import_opt('pool_id', 'designate.pool_manager',
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group='service:pool_manager')
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class Backend(DriverPlugin):
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"""Base class for backend implementations"""
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__plugin_type__ = 'backend'
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__plugin_ns__ = 'designate.backend'
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__backend_status__ = 'untested'
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def __init__(self, target):
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super(Backend, self).__init__()
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self.target = target
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self.options = target.options
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self.masters = target.masters
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self.host = self.options.get('host', '127.0.0.1')
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self.port = int(self.options.get('port', 53))
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# TODO(kiall): Context's should never be shared across requests.
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self.admin_context = DesignateContext.get_admin_context()
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self.admin_context.all_tenants = True
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# Options for sending NOTIFYs
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self.timeout = CONF['service:pool_manager'].poll_timeout
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self.retry_interval = CONF['service:pool_manager'].poll_retry_interval
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self.max_retries = CONF['service:pool_manager'].poll_max_retries
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self.delay = CONF['service:pool_manager'].poll_delay
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def start(self):
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LOG.info(_LI('Starting %s backend'), self.get_canonical_name())
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def stop(self):
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LOG.info(_LI('Stopped %s backend'), self.get_canonical_name())
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@property
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def mdns_api(self):
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return mdns_api.MdnsAPI.get_instance()
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# Core Backend Interface
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@abc.abstractmethod
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def create_zone(self, context, zone):
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"""
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Create a DNS zone.
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:param context: Security context information.
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:param zone: the DNS zone.
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"""
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def update_zone(self, context, zone):
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"""
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Update a DNS zone.
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:param context: Security context information.
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:param zone: the DNS zone.
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"""
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LOG.debug('Update Zone')
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self.mdns_api.notify_zone_changed(
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context, zone, self.host, self.port, self.timeout,
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self.retry_interval, self.max_retries, self.delay)
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@abc.abstractmethod
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def delete_zone(self, context, zone):
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"""
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Delete a DNS zone.
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:param context: Security context information.
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:param zone: the DNS zone.
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"""
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def ping(self, context):
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"""Ping the Backend service"""
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return {
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'status': None
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}
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