heat.objects.resource

Source code for heat.objects.resource

# Copyright 2014 Intel Corp.
#
# 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.


"""Resource object."""

import collections

from oslo_config import cfg
from oslo_log import log as logging
from oslo_versionedobjects import base
from oslo_versionedobjects import fields
import tenacity

from heat.common import crypt
from heat.common import exception
from heat.common.i18n import _
from heat.db.sqlalchemy import api as db_api
from heat.objects import base as heat_base
from heat.objects import fields as heat_fields
from heat.objects import resource_data
from heat.objects import resource_properties_data as rpd

cfg.CONF.import_opt('encrypt_parameters_and_properties', 'heat.common.config')

LOG = logging.getLogger(__name__)


[docs]def retry_on_conflict(func): wrapper = tenacity.retry( stop=tenacity.stop_after_attempt(11), wait=tenacity.wait_random_exponential(multiplier=0.5, max=60), retry=tenacity.retry_if_exception_type( exception.ConcurrentTransaction), reraise=True) return wrapper(func)
[docs]class ResourceCache(object): def __init__(self): self.delete_all()
[docs] def delete_all(self): self.by_stack_id_name = collections.defaultdict(dict)
[docs] def set_by_stack_id(self, resources): for res in resources.values(): self.by_stack_id_name[res.stack_id][res.name] = res
[docs]class Resource( heat_base.HeatObject, base.VersionedObjectDictCompat, base.ComparableVersionedObject, ): fields = { 'id': fields.IntegerField(), 'uuid': fields.StringField(), 'stack_id': fields.StringField(), 'created_at': fields.DateTimeField(read_only=True), 'updated_at': fields.DateTimeField(nullable=True), 'physical_resource_id': fields.StringField(nullable=True), 'name': fields.StringField(nullable=True), 'status': fields.StringField(nullable=True), 'status_reason': fields.StringField(nullable=True), 'action': fields.StringField(nullable=True), 'attr_data': fields.ObjectField( rpd.ResourcePropertiesData, nullable=True), 'attr_data_id': fields.IntegerField(nullable=True), 'rsrc_metadata': heat_fields.JsonField(nullable=True), 'data': fields.ListOfObjectsField( resource_data.ResourceData, nullable=True ), 'rsrc_prop_data_id': fields.ObjectField( fields.IntegerField(nullable=True)), 'engine_id': fields.StringField(nullable=True), 'atomic_key': fields.IntegerField(nullable=True), 'current_template_id': fields.IntegerField(), 'needed_by': heat_fields.ListField(nullable=True, default=None), 'requires': heat_fields.ListField(nullable=True, default=None), 'replaces': fields.IntegerField(nullable=True), 'replaced_by': fields.IntegerField(nullable=True), 'root_stack_id': fields.StringField(nullable=True), } @staticmethod def _from_db_object(resource, context, db_resource, only_fields=None): if db_resource is None: return None for field in resource.fields: if (only_fields is not None and field not in only_fields and field != 'id'): continue if field == 'data': resource['data'] = [resource_data.ResourceData._from_db_object( resource_data.ResourceData(context), resd ) for resd in db_resource.data] elif field != 'attr_data': resource[field] = db_resource[field] if db_resource['rsrc_prop_data_id'] is not None: if hasattr(db_resource, '__dict__'): rpd_obj = db_resource.__dict__.get('rsrc_prop_data') else: rpd_obj = None if rpd_obj is not None: # Object is already eager loaded rpd_obj = ( rpd.ResourcePropertiesData._from_db_object( rpd.ResourcePropertiesData(), context, rpd_obj)) resource._properties_data = rpd_obj.data else: resource._properties_data = {} if db_resource['properties_data']: LOG.error( 'Unexpected condition where resource.rsrc_prop_data ' 'and resource.properties_data are both not null. ' 'rsrc_prop_data.id: %(rsrc_prop_data_id)s, ' 'resource id: %(res_id)s', {'rsrc_prop_data_id': resource['rsrc_prop_data'].id, 'res_id': resource['id']}) elif db_resource['properties_data']: # legacy field if db_resource['properties_data_encrypted']: decrypted_data = crypt.decrypted_dict( db_resource['properties_data']) resource._properties_data = decrypted_data else: resource._properties_data = db_resource['properties_data'] else: resource._properties_data = None if db_resource['attr_data'] is not None: resource._attr_data = rpd.ResourcePropertiesData._from_db_object( rpd.ResourcePropertiesData(context), context, db_resource['attr_data']).data else: resource._attr_data = None resource._context = context resource.obj_reset_changes() return resource @property def attr_data(self): return self._attr_data @property def properties_data(self): if (not self._properties_data and self.rsrc_prop_data_id is not None): LOG.info('rsrc_prop_data lazy load') rpd_obj = rpd.ResourcePropertiesData.get_by_id( self._context, self.rsrc_prop_data_id) self._properties_data = rpd_obj.data or {} return self._properties_data
[docs] @classmethod def get_obj(cls, context, resource_id, refresh=False, fields=None): if fields is None or 'data' in fields: refresh_data = refresh else: refresh_data = False resource_db = db_api.resource_get(context, resource_id, refresh=refresh, refresh_data=refresh_data) return cls._from_db_object(cls(context), context, resource_db, only_fields=fields)
[docs] @classmethod def get_all(cls, context): resources_db = db_api.resource_get_all(context) resources = [ ( resource_name, cls._from_db_object(cls(context), context, resource_db) ) for resource_name, resource_db in resources_db.items() ] return dict(resources)
[docs] @classmethod def create(cls, context, values): return cls._from_db_object(cls(context), context, db_api.resource_create(context, values))
[docs] @classmethod def replacement(cls, context, existing_res_id, new_res_values, atomic_key=0, expected_engine_id=None): replacement = db_api.resource_create_replacement(context, existing_res_id, new_res_values, atomic_key, expected_engine_id) if replacement is None: return None return cls._from_db_object(cls(context), context, replacement)
[docs] @classmethod def delete(cls, context, resource_id): db_api.resource_delete(context, resource_id)
[docs] @classmethod def attr_data_delete(cls, context, resource_id, attr_id): db_api.resource_attr_data_delete(context, resource_id, attr_id)
[docs] @classmethod def exchange_stacks(cls, context, resource_id1, resource_id2): return db_api.resource_exchange_stacks( context, resource_id1, resource_id2)
[docs] @classmethod def get_all_by_stack(cls, context, stack_id, filters=None): cache = context.cache(ResourceCache) resources = cache.by_stack_id_name.get(stack_id) if resources: return dict(resources) resources_db = db_api.resource_get_all_by_stack(context, stack_id, filters) return cls._resources_to_dict(context, resources_db)
@classmethod def _resources_to_dict(cls, context, resources_db): resources = [ ( resource_name, cls._from_db_object(cls(context), context, resource_db) ) for resource_name, resource_db in resources_db.items() ] return dict(resources)
[docs] @classmethod def get_all_active_by_stack(cls, context, stack_id): resources_db = db_api.resource_get_all_active_by_stack(context, stack_id) resources = [ ( resource_id, cls._from_db_object(cls(context), context, resource_db) ) for resource_id, resource_db in resources_db.items() ] return dict(resources)
[docs] @classmethod def get_all_by_root_stack(cls, context, stack_id, filters, cache=False): resources_db = db_api.resource_get_all_by_root_stack( context, stack_id, filters) all = cls._resources_to_dict(context, resources_db) if cache: context.cache(ResourceCache).set_by_stack_id(all) return all
[docs] @classmethod def get_all_stack_ids_by_root_stack(cls, context, stack_id): resources_db = db_api.resource_get_all_by_root_stack( context, stack_id, stack_id_only=True) return {db_res.stack_id for db_res in resources_db.values()}
[docs] @classmethod def purge_deleted(cls, context, stack_id): return db_api.resource_purge_deleted(context, stack_id)
[docs] @classmethod def get_by_name_and_stack(cls, context, resource_name, stack_id): resource_db = db_api.resource_get_by_name_and_stack( context, resource_name, stack_id) return cls._from_db_object(cls(context), context, resource_db)
[docs] @classmethod def get_all_by_physical_resource_id(cls, context, physical_resource_id): matches = db_api.resource_get_all_by_physical_resource_id( context, physical_resource_id) return [cls._from_db_object(cls(context), context, resource_db) for resource_db in matches]
[docs] @classmethod def update_by_id(cls, context, resource_id, values): db_api.resource_update_and_save(context, resource_id, values)
[docs] def update_and_save(self, values): db_api.resource_update_and_save(self._context, self.id, values)
[docs] def select_and_update(self, values, expected_engine_id=None, atomic_key=0): return db_api.resource_update(self._context, self.id, values, atomic_key=atomic_key, expected_engine_id=expected_engine_id)
[docs] @classmethod def select_and_update_by_id(cls, context, resource_id, values, expected_engine_id=None, atomic_key=0): return db_api.resource_update(context, resource_id, values, atomic_key=atomic_key, expected_engine_id=expected_engine_id)
[docs] @classmethod def store_attributes(cls, context, resource_id, atomic_key, attr_data, attr_id): attr_id = rpd.ResourcePropertiesData.create_or_update( context, attr_data, attr_id).id if db_api.resource_attr_id_set( context, resource_id, atomic_key, attr_id): return attr_id return None
[docs] def refresh(self): resource_db = db_api.resource_get(self._context, self.id, refresh=True) return self.__class__._from_db_object( self, self._context, resource_db)
[docs] def convert_to_convergence(self, current_template_id, requires): return self.update_and_save({ 'current_template_id': current_template_id, 'requires': sorted(requires, reverse=True), })
[docs] @staticmethod def encrypt_properties_data(data): if cfg.CONF.encrypt_parameters_and_properties and data: result = crypt.encrypted_dict(data) return (True, result) return (False, data)
[docs] def update_metadata(self, metadata): if self.rsrc_metadata != metadata: rows_updated = self.select_and_update( {'rsrc_metadata': metadata}, self.engine_id, self.atomic_key) if not rows_updated: action = _('metadata setting for resource %s') % self.name raise exception.ConcurrentTransaction(action=action) return True else: return False
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