13e138107c
Added the implementation of scaling policies in heat translator. Change-Id: I99a7cdd52f5c87166095d7af7c7e95ee2f0cc562 Partially-Implements: blueprint translate-tosca-policies
75 lines
3.1 KiB
Python
75 lines
3.1 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 translator.hot.syntax.hot_resource import HotResource
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# Name used to dynamically load appropriate map class.
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TARGET_CLASS_NAME = 'ToscaAutoscaling'
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class ToscaAutoscaling(HotResource):
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'''Translate TOSCA node type tosca.policies.Scaling'''
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toscatype = 'tosca.policies.Scaling'
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def __init__(self, policy):
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hot_type = "OS::Heat::ScalingPolicy"
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super(ToscaAutoscaling, self).__init__(policy,
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type=hot_type)
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self.policy = policy
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def handle_expansion(self):
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sample = self.policy.\
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entity_tpl["triggers"]["resize_compute"]["condition"]
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prop = {}
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prop["description"] = self.policy.entity_tpl['description']
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prop["meter_name"] = "cpu_util"
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prop["statistic"] = sample["method"]
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prop["period"] = sample["period"]
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prop["threshold"] = sample["evaluations"]
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prop["comparison_operator"] = "gt"
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ceilometer_resources = HotResource(self.nodetemplate,
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type='OS::Ceilometer::Alarm',
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name=self.name + '_alarm',
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properties=prop)
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hot_resources = [ceilometer_resources]
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return hot_resources
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def handle_properties(self, resources):
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for node in self.policy.targets:
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self.properties = {}
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self.properties["auto_scaling_group_id"] = {'get_resource': node}
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self.properties["adjustment_type"] = "change_in_capacity "
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self.properties["scaling_adjustment"] = self.\
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policy.entity_tpl["properties"]["increment"]
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for index, resource in enumerate(resources):
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if resource.name in self.policy.targets and \
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resource.type != 'OS::Heat::AutoScalingGroup':
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temp = self.policy.entity_tpl["properties"]
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props = {}
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res = {}
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res["min_size"] = temp["min_instances"]
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res["max_size"] = temp["max_instances"]
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res["default_instances"] = temp["default_instances"]
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props['type'] = resource.type
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props['properties'] = resource.properties
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res['resources'] = props
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scaling_resources = \
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HotResource(resource,
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type='OS::Heat::AutoScalingGroup',
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name=resource.name,
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properties=res)
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resources.pop(index)
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resources.insert(index, scaling_resources)
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return resources
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