OpenStack Orchestration (Heat)
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#
# 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 six
from heat.common import exception
from heat.common.i18n import _
from heat.engine import attributes
from heat.engine import constraints
from heat.engine import properties
from heat.engine import resource
from heat.engine import support
class DesignateZone(resource.Resource):
"""Heat Template Resource for Designate Zone.
Designate provides DNS-as-a-Service services for OpenStack. So, zone, part
of domain is a realm with an identification string, unique in DNS.
"""
support_status = support.SupportStatus(
version='8.0.0')
PROPERTIES = (
NAME, TTL, DESCRIPTION, EMAIL, TYPE, MASTERS
) = (
'name', 'ttl', 'description', 'email', 'type', 'masters'
)
ATTRIBUTES = (
SERIAL,
) = (
'serial',
)
TYPES = (
PRIMARY, SECONDARY
) = (
'PRIMARY', 'SECONDARY'
)
properties_schema = {
# Based on RFC 1035, length of name is set to max of 255
NAME: properties.Schema(
properties.Schema.STRING,
_('DNS Name for the zone.'),
required=True,
constraints=[constraints.Length(max=255)]
),
# Based on RFC 1035, range for ttl is set to 1 to signed 32 bit number
TTL: properties.Schema(
properties.Schema.INTEGER,
_('Time To Live (Seconds) for the zone.'),
update_allowed=True,
constraints=[constraints.Range(min=1,
max=2147483647)]
),
# designate mandates to the max length of 160 for description
DESCRIPTION: properties.Schema(
properties.Schema.STRING,
_('Description of zone.'),
update_allowed=True,
constraints=[constraints.Length(max=160)]
),
EMAIL: properties.Schema(
properties.Schema.STRING,
_('E-mail for the zone. Used in SOA records for the zone. '
'It is required for PRIMARY Type, otherwise ignored.'),
update_allowed=True,
),
TYPE: properties.Schema(
properties.Schema.STRING,
_('Type of zone. PRIMARY is controlled by Designate, SECONDARY '
'zones are slaved from another DNS Server.'),
default=PRIMARY,
constraints=[constraints.AllowedValues(
allowed=TYPES)]
),
MASTERS: properties.Schema(
properties.Schema.LIST,
_('The servers to slave from to get DNS information and is '
'mandatory for zone type SECONDARY, otherwise ignored.'),
update_allowed=True
)
}
attributes_schema = {
SERIAL: attributes.Schema(
_("DNS zone serial number."),
type=attributes.Schema.STRING
),
}
default_client_name = 'designate'
entity = 'zones'
def validate(self):
super(DesignateZone, self).validate()
def raise_invalid_exception(zone_type, prp):
if self.properties.get(self.TYPE) == zone_type:
if not self.properties.get(prp):
msg = _('Property %(prp)s is required for zone type '
'%(zone_type)s') % {
"prp": prp,
"zone_type": zone_type
}
raise exception.StackValidationFailed(message=msg)
raise_invalid_exception(self.PRIMARY, self.EMAIL)
raise_invalid_exception(self.SECONDARY, self.MASTERS)
def handle_create(self):
args = dict((k, v) for k, v in six.iteritems(self.properties) if v)
args['type_'] = args.pop(self.TYPE)
zone = self.client().zones.create(**args)
self.resource_id_set(zone['id'])
def _check_status_complete(self):
zone = self.client().zones.get(self.resource_id)
if zone['status'] == 'ERROR':
raise exception.ResourceInError(
resource_status=zone['status'],
status_reason=_('Error in zone'))
return zone['status'] != 'PENDING'
def check_create_complete(self, handler_data=None):
return self._check_status_complete()
def handle_update(self, json_snippet, tmpl_diff, prop_diff):
args = dict()
for prp in (self.EMAIL, self.TTL, self.DESCRIPTION, self.MASTERS):
if prop_diff.get(prp):
args[prp] = prop_diff.get(prp)
if len(args.keys()) > 0:
self.client().zones.update(self.resource_id, args)
def check_update_complete(self, handler_data=None):
return self._check_status_complete()
def _resolve_attribute(self, name):
if self.resource_id is None:
return
if name == self.SERIAL:
zone = self.client().zones.get(self.resource_id)
return zone[name]
def check_delete_complete(self, handler_data=None):
if handler_data:
with self.client_plugin().ignore_not_found:
return self._check_status_complete()
return True
def resource_mapping():
return {
'OS::Designate::Zone': DesignateZone
}