106 lines
3.5 KiB
Python
106 lines
3.5 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright (c) 2014-2016 AT&T
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied. See the License for the specific language governing permissions and
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# limitations under the License.
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'''GroupAssignment Heat Resource Plugin'''
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from heat.common.i18n import _
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from heat.engine import constraints
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from heat.engine import properties
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from heat.engine import resource
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class GroupAssignment(resource.Resource):
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''' A Group Assignment describes one or more resources assigned to a particular type of group.
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Assignments can reference other assignments, so long as there are no circular references.
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There are three types of groups: affinity, diversity, and exclusivity.
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Exclusivity groups have a unique name, assigned through Valet.
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This resource is purely informational in nature and makes no changes to heat, nova, or cinder.
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The Valet Heat Lifecycle Plugin passes this information to the optimizer.
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'''
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_RELATIONSHIP_TYPES = (
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AFFINITY, DIVERSITY, EXCLUSIVITY,
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) = (
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"affinity", "diversity", "exclusivity",
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)
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PROPERTIES = (
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GROUP_NAME, GROUP_TYPE, LEVEL, RESOURCES,
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) = (
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'group_name', 'group_type', 'level', 'resources',
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)
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properties_schema = {
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GROUP_NAME: properties.Schema(
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properties.Schema.STRING,
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_('Group name. Required for exclusivity groups.'),
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# TODO(JD): Add a custom constraint
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# Constraint must ensure a valid and allowed name
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# when an exclusivity group is in use.
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# This is presently enforced by valet-api and can also
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# be pro-actively enforced here, so as to avoid unnecessary
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# orchestration.
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update_allowed=True
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),
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GROUP_TYPE: properties.Schema(
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properties.Schema.STRING,
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_('Type of group.'),
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constraints=[
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constraints.AllowedValues([AFFINITY, DIVERSITY, EXCLUSIVITY])
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],
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required=True,
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update_allowed=True
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),
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LEVEL: properties.Schema(
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properties.Schema.STRING,
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_('Level of relationship between resources.'),
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constraints=[
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constraints.AllowedValues(['host', 'rack']),
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],
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required=True,
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update_allowed=True
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),
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RESOURCES: properties.Schema(
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properties.Schema.LIST,
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_('List of one or more resource IDs.'),
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required=True,
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update_allowed=True
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),
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}
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def handle_create(self):
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'''Create resource'''
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self.resource_id_set(self.physical_resource_name())
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def handle_update(self, json_snippet, templ_diff, prop_diff): # pylint: disable=W0613
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'''Update resource'''
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self.resource_id_set(self.physical_resource_name())
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def handle_delete(self):
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'''Delete resource'''
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self.resource_id_set(None)
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def resource_mapping():
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'''Map names to resources.'''
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return {'ATT::Valet::GroupAssignment': GroupAssignment, }
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