107 lines
3.5 KiB
Python
107 lines
3.5 KiB
Python
# Copyright (C) 2013 eNovance SAS <licensing@enovance.com>
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# Copyright 2014 eBay Inc.
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# Copyright 2015 Zetta.IO.
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#
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# Author: Ron Rickard <rrickard@ebay.com>
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# Author: Artom Lifshitz <artom.lifshitz@enovance.com>
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# Author: Dag Stenstad <dag@stenstad.net>
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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 random
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import socket
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import ssl
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import eventlet
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from oslo_log import log as logging
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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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class NSD4Backend(base.Backend):
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__backend_status__ = 'untested'
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__plugin_name__ = 'nsd4'
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NSDCT_VERSION = 'NSDCT1'
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def __init__(self, target):
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super(NSD4Backend, self).__init__(target)
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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', 8952))
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self.certfile = self.options.get('certfile',
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'/etc/nsd/nsd_control.pem')
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self.keyfile = self.options.get('keyfile',
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'/etc/nsd/nsd_control.key')
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self.pattern = self.options.get('pattern', 'slave')
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def _command(self, command):
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sock = eventlet.wrap_ssl(
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eventlet.connect((self.host, self.port)),
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keyfile=self.keyfile,
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certfile=self.certfile)
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stream = sock.makefile()
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stream.write('%s %s\n' % (self.NSDCT_VERSION, command))
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stream.flush()
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result = stream.read()
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stream.close()
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sock.close()
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return result
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def _execute_nsd4(self, command):
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try:
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LOG.debug('Executing NSD4 control call: %s on %s' % (command,
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self.host))
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result = self._command(command)
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except (ssl.SSLError, socket.error) as e:
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LOG.debug('NSD4 control call failure: %s' % e)
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raise exceptions.Backend(e)
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if result != 'ok':
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raise exceptions.Backend(result)
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def create_domain(self, context, domain):
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LOG.debug('Create Domain')
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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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port = master['port']
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masters.append('%s port %s' % (host, port))
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# Ensure different MiniDNS instances are targetted for AXFRs
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random.shuffle(masters)
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command = 'addzone %s %s' % (domain['name'], self.pattern)
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try:
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self._execute_nsd4(command)
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except exceptions.Backend as e:
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# If create fails because the domain exists, don't reraise
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if "already exists" not in str(e.message):
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raise
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def delete_domain(self, context, domain):
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LOG.debug('Delete Domain')
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command = 'delzone %s' % domain['name']
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try:
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self._execute_nsd4(command)
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except exceptions.Backend as e:
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# If domain is already deleted, don't reraise
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if "not found" not in str(e.message):
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raise
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