56 lines
2.2 KiB
Python
56 lines
2.2 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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from oslo_config import cfg
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cfg.CONF.import_opt('stack_scheduler_hints', 'heat.common.config')
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class SchedulerHintsMixin(object):
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"""Utility class to encapsulate Scheduler Hint related logic."""
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HEAT_ROOT_STACK_ID = 'heat_root_stack_id'
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HEAT_STACK_ID = 'heat_stack_id'
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HEAT_STACK_NAME = 'heat_stack_name'
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HEAT_PATH_IN_STACK = 'heat_path_in_stack'
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HEAT_RESOURCE_NAME = 'heat_resource_name'
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HEAT_RESOURCE_UUID = 'heat_resource_uuid'
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@staticmethod
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def _path_in_stack(stack):
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# Note: scheduler_hints can only be of DictOfListOfStrings.
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# Convert the list of tuples to list of delimited strings.
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path = []
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for parent_res_name, stack_name in stack.path_in_stack():
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if parent_res_name is not None:
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path.append(','.join([parent_res_name, stack_name]))
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else:
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path.append(stack_name)
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return path
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def _scheduler_hints(self, scheduler_hints):
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"""Augment scheduler hints with supplemental content."""
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if cfg.CONF.stack_scheduler_hints:
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if scheduler_hints is None:
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scheduler_hints = {}
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stack = self.stack
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scheduler_hints[self.HEAT_ROOT_STACK_ID] = stack.root_stack_id()
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scheduler_hints[self.HEAT_STACK_ID] = stack.id
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scheduler_hints[self.HEAT_STACK_NAME] = stack.name
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scheduler_hints[
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self.HEAT_PATH_IN_STACK] = self._path_in_stack(stack)
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scheduler_hints[self.HEAT_RESOURCE_NAME] = self.name
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scheduler_hints[self.HEAT_RESOURCE_UUID] = self.uuid
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return scheduler_hints
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