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# Copyright (c) 2014 Rackspace Hosting
# 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.
from copy import deepcopy
from oslo_config import cfg
from oslo_log import log
from oslo_versionedobjects import exception as ovo_exc
from designate import exceptions
from designate.objects import base
from designate.objects import fields
from designate.objects.validation_error import ValidationError
from designate.objects.validation_error import ValidationErrorList
from designate import utils
LOG = log.getLogger(__name__)
cfg.CONF.import_opt('supported_record_type', 'designate')
@base.DesignateRegistry.register
class RecordSet(base.DesignateObject, base.DictObjectMixin,
base.PersistentObjectMixin):
def __init__(self, *args, **kwargs):
super(RecordSet, self).__init__(*args, **kwargs)
@property
def action(self):
# Return action as UPDATE if present. CREATE and DELETE are returned
# if they are the only ones.
action = 'NONE'
actions = {'CREATE': 0, 'DELETE': 0, 'UPDATE': 0, 'NONE': 0}
for record in self.records:
actions[record.action] += 1
if actions['CREATE'] != 0 and actions['UPDATE'] == 0 and \
actions['DELETE'] == 0 and actions['NONE'] == 0: # noqa
action = 'CREATE'
elif actions['DELETE'] != 0 and actions['UPDATE'] == 0 and \
actions['CREATE'] == 0 and actions['NONE'] == 0: # noqa
action = 'DELETE'
elif actions['UPDATE'] != 0 or actions['CREATE'] != 0 or \
actions['DELETE'] != 0: # noqa
action = 'UPDATE'
return action
@property
def managed(self):
managed = False
for record in self.records:
if record.managed:
return True
return managed
@property
def status(self):
# Return the worst status in order of ERROR, PENDING, ACTIVE, DELETED.
status = None
statuses = {
'ERROR': 0,
'PENDING': 1,
'ACTIVE': 2,
'DELETED': 3,
}
for record in self.records:
if not status or statuses[record.status] < statuses[status]:
status = record.status
return status or 'ACTIVE'
fields = {
'shard': fields.IntegerFields(nullable=True, minimum=0, maximum=4095),
'tenant_id': fields.StringFields(nullable=True, read_only=True),
'zone_id': fields.UUIDFields(nullable=True, read_only=True),
'zone_name': fields.DomainField(nullable=True, maxLength=255),
'name': fields.HostField(maxLength=255, nullable=True),
'type': fields.StringFields(nullable=True, read_only=True),
'ttl': fields.IntegerFields(nullable=True,
minimum=0, maximum=2147483647),
'description': fields.StringFields(nullable=True, maxLength=160),
'records': fields.PolymorphicObjectField('RecordList', nullable=True),
}
def _validate_fail(self, errors, msg):
e = ValidationError()
e.path = ['recordset', 'type']
e.validator = 'value'
e.validator_value = [self.type]
e.message = msg
# Add it to the list for later
errors.append(e)
raise exceptions.InvalidObject(
"Provided object does not match "
"schema", errors=errors, object=self)
def validate(self):
LOG.debug("Validating '%(name)s' object with values: %(values)r", {
'name': self.obj_name(),
'values': self.to_dict(),
})
LOG.debug(list(self.records))
errors = ValidationErrorList()
# Get the right classes (e.g. A for Recordsets with type: 'A')
try:
record_list_cls = self.obj_cls_from_name('%sList' % self.type)
record_cls = self.obj_cls_from_name(self.type)
except (KeyError, ovo_exc.UnsupportedObjectError):
err_msg = ("'%(type)s' is not a valid record type"
% {'type': self.type})
self._validate_fail(errors, err_msg)
if self.type not in cfg.CONF.supported_record_type:
err_msg = ("'%(type)s' is not a supported record type"
% {'type': self.type})
self._validate_fail(errors, err_msg)
# Get any rules that the record type imposes on the record
changes = record_cls.get_recordset_schema_changes()
old_fields = {}
if changes:
LOG.debug("Record %s is overriding the RecordSet schema with: %s",
record_cls.obj_name(), changes)
old_fields = deepcopy(self.FIELDS)
self.FIELDS = utils.deep_dict_merge(self.FIELDS, changes)
error_indexes = []
# Copy these for safekeeping
old_records = deepcopy(self.records)
# Blank the records for this object with the right list type
self.records = record_list_cls()
i = 0
for record in old_records:
record_obj = record_cls()
try:
record_obj.from_string(record.data)
# The from_string() method will throw a ValueError if there is not
# enough data blobs
except ValueError as e:
# Something broke in the from_string() method
# Fake a correct looking ValidationError() object
e = ValidationError()
e.path = ['records', i]
e.validator = 'format'
e.validator_value = [self.type]
e.message = ("'%(data)s' is not a '%(type)s' Record"
% {'data': record.data, 'type': self.type})
# Add it to the list for later
errors.append(e)
error_indexes.append(i)
except TypeError as e:
e = ValidationError()
e.path = ['records', i]
e.validator = 'format'
e.validator_value = [self.type]
e.message = ("'%(data)s' is not a '%(type)s' Record"
% {'data': record.data, 'type': self.type})
# Add it to the list for later
errors.append(e)
error_indexes.append(i)
except AttributeError as e:
e = ValidationError()
e.path = ['records', i]
e.validator = 'format'
e.validator_value = [self.type]
e.message = ("'%(data)s' is not a '%(type)s' Record"
% {'data': record.data, 'type': self.type})
# Add it to the list for later
errors.append(e)
error_indexes.append(i)
except Exception as e:
error_message = ('Provided object is not valid. Got a %s error'
' with message %s' % (type(e).__name__, str(e)))
raise exceptions.InvalidObject(error_message)
else:
# Seems to have loaded right - add it to be validated by
# JSONSchema
self.records.append(record_obj)
i += 1
try:
# Run the actual validate code
super(RecordSet, self).validate()
except exceptions.InvalidObject as e:
raise e
else:
# If JSONSchema passes, but we found parsing errors,
# raise an exception
if len(errors) > 0:
LOG.debug(
"Error Validating '%(name)s' object with values: "
"%(values)r", {
'name': self.obj_name(),
'values': self.to_dict(),
}
)
raise exceptions.InvalidObject(
"Provided object does not match "
"schema", errors=errors, object=self)
finally:
if old_fields:
self.FIELDS = old_fields
# Send in the traditional Record objects to central / storage
self.records = old_records
STRING_KEYS = [
'id', 'type', 'name', 'zone_id'
]
@base.DesignateRegistry.register
class RecordSetList(base.ListObjectMixin, base.DesignateObject,
base.PagedListObjectMixin):
LIST_ITEM_TYPE = RecordSet
fields = {
'objects': fields.ListOfObjectsField('RecordSet'),
}
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