137 lines
4.6 KiB
Python
137 lines
4.6 KiB
Python
# Copyright 2021 NS1 Inc. https://www.ns1.com
|
|
#
|
|
# Author: Dragan Blagojevic <dblagojevic@daitan.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.
|
|
import requests
|
|
from oslo_config import cfg
|
|
from oslo_log import log as logging
|
|
|
|
from designate import exceptions
|
|
from designate.backend import base
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
CONF = cfg.CONF
|
|
|
|
|
|
class NS1Backend(base.Backend):
|
|
__plugin_name__ = 'ns1'
|
|
|
|
__backend_status__ = 'untested'
|
|
|
|
def __init__(self, target):
|
|
super(NS1Backend, self).__init__(target)
|
|
|
|
self.api_endpoint = "https://" + self.options.get('api_endpoint')
|
|
self.api_token = self.options.get('api_token')
|
|
self.tsigkey_name = self.options.get('tsigkey_name', None)
|
|
self.tsigkey_hash = self.options.get('tsigkey_hash', None)
|
|
self.tsigkey_value = self.options.get('tsigkey_value', None)
|
|
|
|
self.headers = {
|
|
"X-NSONE-Key": self.api_token
|
|
}
|
|
|
|
def _build_url(self, zone):
|
|
return "%s/v1/zones/%s" % (self.api_endpoint, zone.name.rstrip('.'))
|
|
|
|
def _get_master(self):
|
|
try:
|
|
return self.masters[0]
|
|
except IndexError as e:
|
|
LOG.error('No masters host set in pools.yaml')
|
|
raise exceptions.Backend(e)
|
|
|
|
def _check_zone_exists(self, zone):
|
|
|
|
try:
|
|
requests.get(
|
|
self._build_url(zone),
|
|
headers=self.headers
|
|
).raise_for_status()
|
|
except requests.HTTPError as e:
|
|
if e.response.status_code == 404:
|
|
return False
|
|
else:
|
|
LOG.error('HTTP error in check zone exists. Zone %s', zone)
|
|
raise exceptions.Backend(e)
|
|
except requests.ConnectionError as e:
|
|
LOG.error('Connection error in check zone exists. Zone %s', zone)
|
|
raise exceptions.Backend(e)
|
|
|
|
return True
|
|
|
|
def create_zone(self, context, zone):
|
|
|
|
master = self._get_master()
|
|
# designate requires "." at end of zone name, NS1 requires omitting
|
|
data = {
|
|
"zone": zone.name.rstrip('.'),
|
|
"secondary": {
|
|
"enabled": True,
|
|
"primary_ip": master.host,
|
|
"primary_port": master.port
|
|
}
|
|
}
|
|
if self.tsigkey_name:
|
|
tsig = {
|
|
"enabled": True,
|
|
"hash": self.tsigkey_hash,
|
|
"name": self.tsigkey_name,
|
|
"key": self.tsigkey_value
|
|
}
|
|
data['secondary']['tsig'] = tsig
|
|
|
|
if not self._check_zone_exists(zone):
|
|
try:
|
|
requests.put(
|
|
self._build_url(zone),
|
|
json=data,
|
|
headers=self.headers
|
|
).raise_for_status()
|
|
except requests.HTTPError as e:
|
|
# check if the zone was actually created
|
|
if self._check_zone_exists(zone):
|
|
LOG.info("%s was created with an error. Deleting zone",
|
|
zone.name)
|
|
try:
|
|
self.delete_zone(context, zone)
|
|
except exceptions.Backend:
|
|
LOG.error('Could not delete errored zone %s',
|
|
zone.name)
|
|
raise exceptions.Backend(e)
|
|
else:
|
|
LOG.info("Can't create zone %s because it already exists",
|
|
zone.name)
|
|
|
|
self.mdns_api.notify_zone_changed(
|
|
context, zone, self.host, self.port, self.timeout,
|
|
self.retry_interval, self.max_retries, self.delay)
|
|
|
|
def delete_zone(self, context, zone):
|
|
"""Delete a DNS zone"""
|
|
|
|
# First verify that the zone exists
|
|
if self._check_zone_exists(zone):
|
|
try:
|
|
requests.delete(
|
|
self._build_url(zone),
|
|
headers=self.headers
|
|
).raise_for_status()
|
|
except requests.HTTPError as e:
|
|
raise exceptions.Backend(e)
|
|
else:
|
|
LOG.warning("Trying to delete zone %s but that zone is not "
|
|
"present in the ns1 backend. Assuming success.",
|
|
zone)
|