trove/reddwarf/dns/manager.py
Michael Basnight c8a5bc39dc Update oslo codebase within reddwarf.
* Updated logging,cfg,setup to new oslo
* Split out the paste ini from the conf files
* Modified reddwarf-api/server to use new modules
* Modified reddwarf-manage to use new cfg
* Added rpc helper for rpc services
* Modified reddwarf-taskmanager to use rpc helper
* Modified reddwarf-guestagent to use new rpc helper
* Fixed guestagent api to use rpc proxy
* Fixed taskmanager module to conform to new rpc
* Updated guestagent manager/pkg to use new rpc
* Updated api paste to use keystoneclient auth_token
* Updated managers to use periodic tasks

Implements: blueprint reddwarf/upgrade-oslo

Change-Id: I9ad1b441eca855a4304454014ae746ec51bef8f3
2012-12-18 21:18:28 -06:00

83 lines
2.8 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2011 Openstack, LLC.
# All Rights Reserved.
#
# 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.
"""
Dns manager.
"""
from reddwarf.openstack.common import log as logging
from reddwarf.common import utils
from reddwarf.common import cfg
LOG = logging.getLogger(__name__)
CONF = cfg.CONF
class DnsManager(object):
"""Handles associating DNS to and from IPs."""
def __init__(self, dns_driver=None, dns_instance_entry_factory=None,
*args, **kwargs):
if not dns_driver:
dns_driver = CONF.dns_driver
dns_driver = utils.import_object(dns_driver)
self.driver = dns_driver()
if not dns_instance_entry_factory:
dns_instance_entry_factory = CONF.dns_instance_entry_factory
entry_factory = utils.import_object(dns_instance_entry_factory)
self.entry_factory = entry_factory()
def create_instance_entry(self, instance_id, content):
"""Connects a new instance with a DNS entry.
:param instance_id: The reddwarf instance_id to associate.
:param content: The IP content attached to the instance.
"""
entry = self.entry_factory.create_entry(instance_id)
if entry:
entry.content = content[0]
LOG.debug("Creating entry address %s." % str(entry))
self.driver.create_entry(entry)
else:
LOG.debug("Entry address not found for instance %s" % instance_id)
def delete_instance_entry(self, instance_id, content=None):
"""Removes a DNS entry associated to an instance.
:param instance_id: The reddwarf instance id to associate.
:param content: The IP content attached to the instance.
"""
entry = self.entry_factory.create_entry(instance_id)
LOG.debug("Deleting instance entry with %s" % str(entry))
if entry:
self.driver.delete_entry(entry.name, entry.type)
def determine_hostname(self, instance_id):
"""
Create the hostname field based on the instance id.
Use instance by default.
"""
entry = self.entry_factory.create_entry(instance_id)
if entry:
return entry.name
else:
return None