PowerDNS Backend Driver
Change-Id: Ia1fad83a0219778ae4704b32b8d8e3a209d046e9
This commit is contained in:
Kiall Mac Innes
parent
c52f08ea48
commit
355efb1040
210
moniker/backend/impl_powerdns.py
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210
moniker/backend/impl_powerdns.py
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# Copyright 2012 Hewlett-Packard Development Company, L.P. All Rights Reserved.
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# Copyright 2012 Managed I.T.
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#
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# Author: Patrick Galbraith <patg@hp.com>
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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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from sqlalchemy import Column, String, Text, Integer
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import exc as sqlalchemy_exceptions
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from moniker.openstack.common import cfg
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from moniker.openstack.common import log as logging
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from moniker import exceptions
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from moniker.backend import base
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from moniker.central import api as central_api
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from moniker.context import MonikerContext
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from moniker.sqlalchemy.session import get_session, SQLOPTS
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from moniker.sqlalchemy.models import Base as CommonBase
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from moniker.sqlalchemy.types import UUID
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LOG = logging.getLogger(__name__)
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cfg.CONF.register_group(cfg.OptGroup(
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name='backend:powerdns', title="Configuration for Powerdns Backend"
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))
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cfg.CONF.register_opts(SQLOPTS, group='backend:powerdns')
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class Base(CommonBase):
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id = Column(Integer, primary_key=True, autoincrement=True)
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Base = declarative_base(cls=Base)
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class Domain(Base):
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__tablename__ = 'domains'
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moniker_id = Column(UUID, nullable=False)
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name = Column(String(255), nullable=False, unique=True)
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master = Column(String(128), nullable=True)
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last_check = Column(Integer, default=None, nullable=True)
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type = Column(String(6), nullable=False)
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notified_serial = Column(Integer, default=None, nullable=True)
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account = Column(String(40), default=None, nullable=True)
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class Record(Base):
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__tablename__ = 'records'
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moniker_id = Column(UUID, nullable=False)
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domain_id = Column(Integer, default=None, nullable=True)
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name = Column(String(255), default=None, nullable=True)
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type = Column(String(10), default=None, nullable=True)
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content = Column(Text, default=None, nullable=True)
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ttl = Column(Integer, default=None, nullable=True)
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prio = Column(Integer, default=None, nullable=True)
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change_date = Column(Integer, default=None, nullable=True)
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class PowerDNSBackend(base.Backend):
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__plugin_name__ = 'powerdns'
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def start(self):
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super(PowerDNSBackend, self).start()
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self.session = get_session(self.name)
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def create_domain(self, context, domain):
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admin_context = MonikerContext.get_admin_context()
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servers = central_api.get_servers(admin_context)
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domain_m = Domain()
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domain_m.update({
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'moniker_id': domain['id'],
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'name': domain['name'].rstrip('.'),
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'master': servers[0]['name'].rstrip('.'),
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'type': 'NATIVE',
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'account': context.tenant_id
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})
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domain_m.save(self.session)
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for server in servers:
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record_m = Record()
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record_m.update({
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'moniker_id': server['id'],
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'domain_id': domain_m.id,
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'name': domain['name'].rstrip('.'),
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'type': 'NS',
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'content': server['name'].rstrip('.')
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})
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record_m.save(self.session)
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# NOTE(kiall): Do the SOA last, ensuring we don't trigger a NOTIFY
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# before the NS records are in place.
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record_m = Record()
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record_m.update({
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'moniker_id': domain['id'],
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'domain_id': domain_m.id,
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'name': domain['name'].rstrip('.'),
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'type': 'SOA',
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'content': self._build_soa_content(domain)
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})
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record_m.save(self.session)
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def update_domain(self, context, domain):
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domain_m = self._get_domain(domain['id'])
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soa_record_m = self._get_record(domain=domain_m, type='SOA')
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soa_record_m.update({
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'content': self._build_soa_content(domain)
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})
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soa_record_m.save(self.session)
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def delete_domain(self, context, domain):
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domain_m = self._get_domain(domain['id'])
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domain_m.delete(self.session)
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self.session.query(Record).filter_by(domain_id=domain_m.id).delete()
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def create_record(self, context, domain, record):
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domain_m = self._get_domain(domain['id'])
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record_m = Record()
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record_m.update({
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'moniker_id': record['id'],
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'domain_id': domain_m.id,
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'name': record['name'].rstrip('.'),
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'type': record['type'],
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'content': record['data'],
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'ttl': record['ttl'],
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'prio': record['priority']
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})
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record_m.save(self.session)
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def update_record(self, context, domain, record):
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record_m = self._get_record(record['id'])
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record_m.update({
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'name': record['name'].rstrip('.'),
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'type': record['type'],
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'content': record['data'],
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'ttl': record['ttl'],
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'prio': record['priority']
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})
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record_m.save(self.session)
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def delete_record(self, context, domain, record):
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record_m = self._get_record(record['id'])
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record_m.delete(self.session)
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def _build_soa_content(self, domain):
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return "%s %s. %d %d %d %d %d" % (domain['name'],
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domain['email'].replace("@", "."),
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domain['serial'],
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domain['refresh'],
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domain['retry'],
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domain['expire'],
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domain['minimum'])
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def _get_domain(self, domain_id):
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query = self.session.query(Domain)
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try:
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domain = query.filter_by(moniker_id=domain_id).one()
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except sqlalchemy_exceptions.NoResultFound:
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raise exceptions.Backend('No domain found')
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except sqlalchemy_exceptions.MultipleResultsFound:
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raise exceptions.Backend('Too many domains found')
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else:
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return domain
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def _get_record(self, record_id=None, domain=None, type=None):
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query = self.session.query(Record)
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if record_id:
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query = query.filter_by(moniker_id=record_id)
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if type:
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query = query.filter_by(type=type)
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if domain:
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query = query.filter_by(domain_id=domain.id)
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try:
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record = query.one()
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except sqlalchemy_exceptions.NoResultFound:
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raise exceptions.Backend('No record found')
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except sqlalchemy_exceptions.MultipleResultsFound:
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raise exceptions.Backend('Too many records found')
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else:
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return record
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@ -19,6 +19,10 @@ class Base(Exception):
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pass
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class Backend(Base):
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pass
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class ConfigurationError(Base):
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pass
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85
moniker/sqlalchemy/models.py
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85
moniker/sqlalchemy/models.py
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# Copyright 2012 Hewlett-Packard Development Company, L.P.
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#
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# Author: Patrick Galbraith <patg@hp.com>
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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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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.orm import object_mapper
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from moniker import exceptions
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class Base(object):
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__abstract__ = True
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__table_initialized__ = False
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def save(self, session):
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""" Save this object """
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session.add(self)
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try:
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session.flush()
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except IntegrityError, e:
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non_unique_strings = (
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'duplicate entry',
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'not unique'
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)
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for non_unique_string in non_unique_strings:
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if non_unique_string in str(e).lower():
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raise exceptions.Duplicate(str(e))
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# Not a Duplicate error.. Re-raise.
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raise
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def delete(self, session):
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""" Delete this object """
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session.delete(self)
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session.flush()
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def __getitem__(self, key):
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return getattr(self, key)
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def __iter__(self):
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columns = dict(object_mapper(self).columns).keys()
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# NOTE(russellb): Allow models to specify other keys that can be looked
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# up, beyond the actual db columns. An example would be the 'name'
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# property for an Instance.
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if hasattr(self, '_extra_keys'):
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columns.extend(self._extra_keys())
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self._i = iter(columns)
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return self
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def next(self):
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n = self._i.next()
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return n, getattr(self, n)
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def update(self, values):
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""" Make the model object behave like a dict """
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for k, v in values.iteritems():
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setattr(self, k, v)
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def iteritems(self):
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"""
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Make the model object behave like a dict.
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Includes attributes from joins.
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"""
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local = dict(self)
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joined = dict([(k, v) for k, v in self.__dict__.iteritems()
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if not k[0] == '_'])
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local.update(joined)
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return local.iteritems()
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@ -17,96 +17,30 @@
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# under the License.
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from sqlalchemy import (Column, DateTime, String, Text, Integer, ForeignKey,
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Enum, Boolean, Unicode)
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from sqlalchemy.exc import IntegrityError
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from sqlalchemy.orm import relationship, backref, object_mapper
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import relationship, backref
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from sqlalchemy.ext.hybrid import hybrid_property
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from moniker.openstack.common import log as logging
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from moniker.openstack.common import timeutils
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from moniker.openstack.common.uuidutils import generate_uuid
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from moniker import exceptions
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from moniker.sqlalchemy.types import UUID, Inet
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from moniker.sqlalchemy.models import Base as CommonBase
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from sqlalchemy.ext.declarative import declarative_base
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LOG = logging.getLogger(__name__)
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RECORD_TYPES = ['A', 'AAAA', 'CNAME', 'MX', 'SRV', 'TXT', 'NS', 'PTR']
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class Base(object):
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__abstract__ = True
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__table_initialized__ = False
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class Base(CommonBase):
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id = Column(UUID, default=generate_uuid, primary_key=True)
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version = Column(Integer, default=1, nullable=False)
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created_at = Column(DateTime, default=timeutils.utcnow)
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updated_at = Column(DateTime, onupdate=timeutils.utcnow)
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version = Column(Integer, default=1, nullable=False)
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__mapper_args__ = {
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'version_id_col': version
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}
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def save(self, session):
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""" Save this object """
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session.add(self)
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try:
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session.flush()
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except IntegrityError, e:
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non_unique_strings = (
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'duplicate entry',
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'not unique'
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)
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for non_unique_string in non_unique_strings:
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if non_unique_string in str(e).lower():
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raise exceptions.Duplicate(str(e))
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# Not a Duplicate error.. Re-raise.
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raise
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def delete(self, session):
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""" Delete this object """
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session.delete(self)
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session.flush()
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def __getitem__(self, key):
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return getattr(self, key)
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def __iter__(self):
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columns = dict(object_mapper(self).columns).keys()
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# NOTE(russellb): Allow models to specify other keys that can be looked
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# up, beyond the actual db columns. An example would be the 'name'
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# property for an Instance.
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if hasattr(self, '_extra_keys'):
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columns.extend(self._extra_keys())
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self._i = iter(columns)
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return self
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def next(self):
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n = self._i.next()
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return n, getattr(self, n)
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def update(self, values):
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""" Make the model object behave like a dict """
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for k, v in values.iteritems():
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setattr(self, k, v)
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def iteritems(self):
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"""
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Make the model object behave like a dict.
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Includes attributes from joins.
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"""
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local = dict(self)
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joined = dict([(k, v) for k, v in self.__dict__.iteritems()
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if not k[0] == '_'])
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local.update(joined)
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return local.iteritems()
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Base = declarative_base(cls=Base)
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28
moniker/tests/test_backend/test_powerdns.py
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28
moniker/tests/test_backend/test_powerdns.py
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@ -0,0 +1,28 @@
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# 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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from moniker.openstack.common import log as logging
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from moniker.tests.test_backend import BackendTestCase
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LOG = logging.getLogger(__name__)
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class PowerDNSBackendDriverTestCase(BackendTestCase):
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__test__ = True
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def setUp(self):
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super(PowerDNSBackendDriverTestCase, self).setUp()
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self.config(backend_driver='powerdns', group='service:agent')
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1
setup.py
1
setup.py
@ -67,6 +67,7 @@ setup(
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[moniker.backend]
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bind9 = moniker.backend.impl_bind9:Bind9Backend
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mysqlbind9 = moniker.backend.impl_mysqlbind9:MySQLBind9Backend
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powerdns = moniker.backend.impl_powerdns:PowerDNSBackend
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rpc = moniker.backend.impl_rpc:RPCBackend
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fake = moniker.backend.impl_fake:FakeBackend
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