235 lines
8.7 KiB
Python
235 lines
8.7 KiB
Python
# Copyright 2014 Intel Corp.
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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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"""Resource 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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import retrying
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import six
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from heat.common import crypt
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from heat.common import exception
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from heat.common.i18n import _
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from heat.db import api as db_api
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from heat.objects import base as heat_base
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from heat.objects import fields as heat_fields
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from heat.objects import resource_data
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cfg.CONF.import_opt('encrypt_parameters_and_properties', 'heat.common.config')
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def retry_on_conflict(func):
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def is_conflict(ex):
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return isinstance(ex, exception.ConcurrentTransaction)
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wrapper = retrying.retry(stop_max_attempt_number=11,
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wait_random_min=0.0, wait_random_max=2.0,
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retry_on_exception=is_conflict)
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return wrapper(func)
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class Resource(
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heat_base.HeatObject,
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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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'uuid': fields.StringField(),
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'stack_id': fields.StringField(),
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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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'physical_resource_id': fields.StringField(nullable=True),
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'name': fields.StringField(nullable=True),
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'status': fields.StringField(nullable=True),
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'status_reason': fields.StringField(nullable=True),
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'action': fields.StringField(nullable=True),
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'rsrc_metadata': heat_fields.JsonField(nullable=True),
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'properties_data': heat_fields.JsonField(nullable=True),
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'properties_data_encrypted': fields.BooleanField(default=False),
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'data': fields.ListOfObjectsField(
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resource_data.ResourceData,
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nullable=True
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),
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'engine_id': fields.StringField(nullable=True),
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'atomic_key': fields.IntegerField(nullable=True),
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'current_template_id': fields.IntegerField(),
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'needed_by': heat_fields.ListField(nullable=True, default=None),
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'requires': heat_fields.ListField(nullable=True, default=None),
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'replaces': fields.IntegerField(nullable=True),
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'replaced_by': fields.IntegerField(nullable=True),
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'root_stack_id': fields.StringField(nullable=True),
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}
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@staticmethod
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def _from_db_object(resource, context, db_resource):
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if db_resource is None:
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return None
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for field in resource.fields:
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if field == 'data':
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resource['data'] = [resource_data.ResourceData._from_db_object(
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resource_data.ResourceData(context), resd
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) for resd in db_resource.data]
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else:
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resource[field] = db_resource[field]
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if resource.properties_data_encrypted and resource.properties_data:
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properties_data = {}
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for prop_name, prop_value in resource.properties_data.items():
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method, value = prop_value
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decrypted_value = crypt.decrypt(method, value)
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prop_string = jsonutils.loads(decrypted_value)
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properties_data[prop_name] = prop_string
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resource.properties_data = properties_data
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resource._context = context
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resource.obj_reset_changes()
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return resource
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@classmethod
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def get_obj(cls, context, resource_id):
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resource_db = db_api.resource_get(context, resource_id)
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return cls._from_db_object(cls(context), context, resource_db)
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@classmethod
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def get_all(cls, context):
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resources_db = db_api.resource_get_all(context)
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resources = [
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(
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resource_name,
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cls._from_db_object(cls(context), context, resource_db)
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)
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for resource_name, resource_db in six.iteritems(resources_db)
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]
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return dict(resources)
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@classmethod
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def create(cls, context, values):
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return cls._from_db_object(cls(context), context,
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db_api.resource_create(context, values))
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@classmethod
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def delete(cls, context, resource_id):
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resource_db = db_api.resource_get(context, resource_id)
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resource_db.delete()
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@classmethod
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def exchange_stacks(cls, context, resource_id1, resource_id2):
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return db_api.resource_exchange_stacks(
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context,
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resource_id1,
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resource_id2)
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@classmethod
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def get_all_by_stack(cls, context, stack_id, filters=None):
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resources_db = db_api.resource_get_all_by_stack(context, stack_id,
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filters)
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return cls._resources_to_dict(context, resources_db)
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@classmethod
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def _resources_to_dict(cls, context, resources_db):
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resources = [
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(
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resource_name,
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cls._from_db_object(cls(context), context, resource_db)
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)
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for resource_name, resource_db in six.iteritems(resources_db)
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]
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return dict(resources)
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@classmethod
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def get_all_active_by_stack(cls, context, stack_id):
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resources_db = db_api.resource_get_all_active_by_stack(context,
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stack_id)
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resources = [
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(
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resource_id,
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cls._from_db_object(cls(context), context, resource_db)
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)
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for resource_id, resource_db in six.iteritems(resources_db)
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]
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return dict(resources)
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@classmethod
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def get_all_by_root_stack(cls, context, stack_id, filters):
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resources_db = db_api.resource_get_all_by_root_stack(
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context,
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stack_id,
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filters)
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return cls._resources_to_dict(context, resources_db)
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@classmethod
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def purge_deleted(cls, context, stack_id):
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return db_api.resource_purge_deleted(context, stack_id)
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@classmethod
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def get_by_name_and_stack(cls, context, resource_name, stack_id):
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resource_db = db_api.resource_get_by_name_and_stack(
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context,
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resource_name,
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stack_id)
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return cls._from_db_object(cls(context), context, resource_db)
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@classmethod
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def get_by_physical_resource_id(cls, context, physical_resource_id):
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resource_db = db_api.resource_get_by_physical_resource_id(
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context,
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physical_resource_id)
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return cls._from_db_object(cls(context), context, resource_db)
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@classmethod
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def update_by_id(cls, context, resource_id, values):
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resource_db = db_api.resource_get(context, resource_id)
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resource_db.update_and_save(values)
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def update_and_save(self, values):
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resource_db = db_api.resource_get(self._context, self.id)
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resource_db.update_and_save(values)
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def select_and_update(self, values, expected_engine_id=None,
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atomic_key=0):
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return db_api.resource_update(self._context, self.id, values,
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atomic_key=atomic_key,
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expected_engine_id=expected_engine_id)
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def refresh(self, attrs=None):
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resource_db = db_api.resource_get(self._context, self.id)
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resource_db.refresh(attrs=attrs)
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return self.__class__._from_db_object(
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self,
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self._context,
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resource_db)
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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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def update_metadata(self, metadata):
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if self.rsrc_metadata != metadata:
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rows_updated = self.select_and_update(
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{'rsrc_metadata': metadata}, self.engine_id, self.atomic_key)
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if not rows_updated:
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action = _('metadata setting for resource %s') % self.name
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raise exception.ConcurrentTransaction(action=action)
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