122 lines
4.1 KiB
Python
122 lines
4.1 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 designate.openstack.common import log as logging
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from designate import exceptions
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from designate.context import DesignateContext
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from designate.plugin import Plugin
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LOG = logging.getLogger(__name__)
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class Backend(Plugin):
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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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def __init__(self, central_service):
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super(Backend, self).__init__()
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self.central_service = central_service
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self.admin_context = DesignateContext.get_admin_context()
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def create_tsigkey(self, context, tsigkey):
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""" Create a TSIG Key """
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raise exceptions.NotImplemented(
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'TSIG is not supported by this backend')
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def update_tsigkey(self, context, tsigkey):
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""" Update a TSIG Key """
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raise exceptions.NotImplemented(
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'TSIG is not supported by this backend')
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def delete_tsigkey(self, context, tsigkey):
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""" Delete a TSIG Key """
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raise exceptions.NotImplemented(
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'TSIG is not supported by this backend')
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@abc.abstractmethod
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def create_domain(self, context, domain):
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""" Create a DNS domain """
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@abc.abstractmethod
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def update_domain(self, context, domain):
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""" Update a DNS domain """
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@abc.abstractmethod
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def delete_domain(self, context, domain):
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""" Delete a DNS domain """
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@abc.abstractmethod
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def create_record(self, context, domain, record):
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""" Create a DNS record """
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@abc.abstractmethod
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def update_record(self, context, domain, record):
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""" Update a DNS record """
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@abc.abstractmethod
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def delete_record(self, context, domain, record):
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""" Delete a DNS record """
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def sync_domain(self, context, domain, records):
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"""
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Re-Sync a DNS domain
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This is the default, naive, domain synchronization implementation.
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"""
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# First up, delete the domain from the backend.
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try:
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self.delete_domain(context, domain)
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except exceptions.DomainNotFound, e:
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# NOTE(Kiall): This means a domain was missing from the backend.
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# Good thing we're doing a sync!
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LOG.warn("Failed to delete domain '%s' during sync. Message: %s",
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domain['id'], str(e))
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# Next, re-create the domain in the backend.
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self.create_domain(context, domain)
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# Finally, re-create the records for the domain.
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for record in records:
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# Re-create the record in the backend.
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self.create_record(context, domain, record)
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def sync_record(self, context, domain, record):
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"""
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Re-Sync a DNS record.
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This is the default, naive, record synchronization implementation.
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"""
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# First up, delete the record from the backend.
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try:
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self.delete_record(context, domain, record)
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except exceptions.RecordNotFound, e:
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# NOTE(Kiall): This means a record was missing from the backend.
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# Good thing we're doing a sync!
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LOG.warn("Failed to delete record '%s' in domain '%s' during sync."
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" Message: %s", record['id'], domain['id'], str(e))
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# Finally, re-create the record in the backend.
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self.create_record(context, domain, record)
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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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