116 lines
3.7 KiB
Python
116 lines
3.7 KiB
Python
# Copyright 2016 Hewlett Packard Enterprise Development Company, L.P.
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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 netaddr
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import requests
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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 six.moves import urllib
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from designate import exceptions
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from designate.backend import base
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class PDNS4Backend(base.Backend):
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__plugin_name__ = 'pdns4'
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__backend_status__ = 'integrated'
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def __init__(self, target):
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super(PDNS4Backend, self).__init__(target)
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self.api_endpoint = self.options.get('api_endpoint')
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self.api_token = self.options.get('api_token')
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self.tsigkey_name = self.options.get('tsigkey_name', None)
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self.headers = {
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"X-API-Key": self.api_token
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}
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def _build_url(self, zone=''):
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r_url = urllib.parse.urlparse(self.api_endpoint)
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return "%s://%s/api/v1/servers/localhost/zones%s%s" % (
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r_url.scheme, r_url.netloc, '/' if zone else '', zone)
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def _check_zone_exists(self, zone):
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zone = requests.get(
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self._build_url(zone=zone.name),
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headers=self.headers,
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)
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return zone.status_code is 200
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def create_zone(self, context, zone):
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"""Create a DNS zone"""
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masters = []
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for master in self.masters:
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host = master.host
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if netaddr.IPAddress(host).version == 6:
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host = '[%s]' % host
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masters.append('%s:%d' % (host, master.port))
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data = {
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"name": zone.name,
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"kind": "slave",
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"masters": masters,
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}
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if self.tsigkey_name:
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data['slave_tsig_key_ids'] = [self.tsigkey_name]
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if self._check_zone_exists(zone):
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LOG.info(
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'%s exists on the server. Deleting zone before creation', zone
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)
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try:
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self.delete_zone(context, zone)
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except exceptions.Backend:
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LOG.error('Could not delete pre-existing zone %s', zone)
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raise
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try:
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requests.post(
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self._build_url(),
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json=data,
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headers=self.headers
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).raise_for_status()
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except requests.HTTPError as e:
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# check if the zone was actually created - even with errors pdns
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# will create the zone sometimes
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if self._check_zone_exists(zone):
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LOG.info("%s was created with an error. Deleting zone", zone)
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try:
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self.delete_zone(context, zone)
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except exceptions.Backend:
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LOG.error('Could not delete errored zone %s', zone)
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raise exceptions.Backend(e)
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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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def delete_zone(self, context, zone):
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"""Delete a DNS zone"""
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try:
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requests.delete(
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self._build_url(zone.name),
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headers=self.headers
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).raise_for_status()
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except requests.HTTPError as e:
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raise exceptions.Backend(e)
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