0550659f5f
Store resource attributes that may be cached in the DB, saving the cost of re-resolving them later. This works for most resources, specifically those that do not override the get_attribute() method. Change-Id: I71f8aa431a60457326167b8c82adc03ca750eda6 Partial-Bug: #1660831
87 lines
3.3 KiB
Python
87 lines
3.3 KiB
Python
#
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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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"""ResourcePropertiesData object."""
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from oslo_config import cfg
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from oslo_serialization import jsonutils
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from oslo_versionedobjects import base
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from oslo_versionedobjects import fields
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from heat.common import crypt
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from heat.db.sqlalchemy import api as db_api
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from heat.objects import fields as heat_fields
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class ResourcePropertiesData(
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base.VersionedObject,
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base.VersionedObjectDictCompat,
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base.ComparableVersionedObject,
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):
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fields = {
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'id': fields.IntegerField(),
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'data': heat_fields.JsonField(nullable=True),
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'created_at': fields.DateTimeField(read_only=True),
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'updated_at': fields.DateTimeField(nullable=True),
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}
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@staticmethod
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def _from_db_object(rpd, context, db_rpd, data_unencrypted=None):
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# The data_unencrypted field allows us to avoid an extra
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# decrypt operation, e.g. when called from create().
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for field in rpd.fields:
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rpd[field] = db_rpd[field]
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if data_unencrypted: # save a little (decryption) processing
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rpd['data'] = data_unencrypted
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elif db_rpd['encrypted'] and rpd['data'] is not None:
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rpd['data'] = crypt.decrypted_dict(rpd['data'])
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# TODO(cwolfe) setting the context here should go away, that
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# should have been done with the initialisation of the rpd
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# object. For now, maintaining consistency with other
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# _from_db_object methods.
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rpd._context = context
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rpd.obj_reset_changes()
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return rpd
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@classmethod
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def create_or_update(cls, context, data, rpd_id=None):
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properties_data_encrypted, properties_data = \
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ResourcePropertiesData.encrypt_properties_data(data)
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values = {'encrypted': properties_data_encrypted,
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'data': properties_data}
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db_obj = db_api.resource_prop_data_create_or_update(
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context, values, rpd_id)
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return cls._from_db_object(cls(), context, db_obj, data)
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@classmethod
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def create(cls, context, data):
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return ResourcePropertiesData.create_or_update(context, data)
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@staticmethod
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def encrypt_properties_data(data):
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if cfg.CONF.encrypt_parameters_and_properties and data:
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result = {}
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for prop_name, prop_value in data.items():
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prop_string = jsonutils.dumps(prop_value)
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encrypted_value = crypt.encrypt(prop_string)
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result[prop_name] = encrypted_value
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return (True, result)
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return (False, data)
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@staticmethod
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def get_by_id(context, id):
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db_ref = db_api.resource_prop_data_get(context, id)
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return ResourcePropertiesData._from_db_object(
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ResourcePropertiesData(context=context), context, db_ref)
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