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#
# 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.
from collections import defaultdict
from translator.hot.syntax.hot_resource import HotResource
# Name used to dynamically load appropriate map class.
TARGET_CLASS_NAME = 'ToscaClusterAutoscaling'
SCALE_POLICY = 'senlin.policy.scaling-1.0'
SERVER_TYPE = 'os.nova.server-1.0'
SCALE_TYPE = {'SCALE_IN': 'CLUSTER_SCALE_IN',
'SCALE_OUT': 'CLUSTER_SCALE_OUT'}
ALARM_METER_NAME = {'utilization': 'cpu_util'}
ALARM_COMPARISON_OPERATOR = {'greater_than': 'gt', 'gerater_equal': 'ge',
'less_than': 'lt', 'less_equal': 'le',
'equal': 'eq', 'not_equal': 'ne'}
ALARM_STATISTIC = {'average': 'avg'}
class ToscaClusterAutoscaling(HotResource):
'''Translate TOSCA node type tosca.policies.Scaling.Cluster'''
toscatype = 'tosca.policies.Scaling.Cluster'
def __init__(self, policy, csar_dir=None):
hot_type = "OS::Senlin::Policy"
super(ToscaClusterAutoscaling, self).__init__(policy,
type=hot_type,
csar_dir=csar_dir)
self.policy = policy
def _generate_scale_properties(self,
target_cluster_nodes,
cluster_scale_type):
properties = {}
bindings = []
policy_res = {}
adjustment = {}
properties["type"] = SCALE_POLICY
for cluster_node in target_cluster_nodes:
bindings.append({'cluster': cluster_node})
properties["bindings"] = bindings
policy_res["event"] = cluster_scale_type
adjustment["type"] = "CHANGE_IN_CAPACITY"
adjustment["number"] = self.\
policy.entity_tpl["properties"]["increment"]
policy_res["adjustment"] = adjustment
properties["properties"] = policy_res
return properties
def handle_expansion(self):
hot_resources = []
trigger_receivers = defaultdict(list)
for node in self.policy.targets:
for trigger in self.policy.entity_tpl['triggers']:
for action in self.policy.\
entity_tpl['triggers'][trigger]['action']:
scale_name = action
action_sample = self.policy.\
entity_tpl['triggers'][trigger]['action'][action]
scale_type = action_sample['type']
scale_implement = action_sample['implementation']
(entity, method) = scale_implement.split('.')
receiver_prop = {}
receiver_prop['cluster'] = {
"get_resource": "%s_cluster" % node
}
receiver_prop['action'] = SCALE_TYPE[scale_type]
receiver_prop['type'] = method
receiver_name = node + '_' + scale_name + '_receiver'
trigger_receivers[trigger].append(receiver_name)
receiver_resources = HotResource(self.nodetemplate,
type='OS::Senlin::Receiver',
name=receiver_name,
properties=receiver_prop)
hot_resources.append(receiver_resources)
for trigger in self.policy.entity_tpl['triggers']:
sample = self.policy.\
entity_tpl['triggers'][trigger]['condition']
(meter_name, comparison_operator, threshold) = \
sample["constraint"].split()
threshold = threshold.strip("%")
alarm_prop = {}
alarm_prop["description"] = self.policy.entity_tpl['description']
alarm_prop["meter_name"] = self.policy.\
entity_tpl['triggers'][trigger]['event_type']['metrics']
alarm_prop["statistic"] = ALARM_STATISTIC[sample['method']]
alarm_prop["period"] = sample["period"]
alarm_prop["evaluation_periods"] = sample["evaluations"]
alarm_prop["threshold"] = threshold
alarm_prop["comparison_operator"] = \
ALARM_COMPARISON_OPERATOR[comparison_operator]
alarm_prop["repeat_actions"] = "True"
alarm_prop["alarm_actions"] = []
for index in range(len(trigger_receivers[trigger])):
alarm_prop["alarm_actions"].\
append({'get_attr': [trigger_receivers[trigger][index],
'channel',
'alarm_url']})
ceilometer_resources = HotResource(self.nodetemplate,
type='OS::Aodh::Alarm',
name=trigger + '_alarm',
properties=alarm_prop)
hot_resources.append(ceilometer_resources)
return hot_resources
def handle_properties(self, resources):
remove_resources = []
networks = defaultdict(list)
for index, resource in enumerate(resources):
if resource.type == 'OS::Neutron::Port':
for hot_resource in resource.depends_on_nodes:
if hot_resource.type != 'OS::Neutron::Net':
networks[hot_resource.name].\
append(
{'network': '%s' % resource.properties['network']}
)
remove_resources.append(resource)
elif resource.type == 'OS::Neutron::Net':
remove_resources.append(resource)
elif resource.name in self.policy.targets and \
resource.type != 'OS::Senlin::Policy':
props = {}
del resource.properties['user_data_format']
del resource.properties['networks']
props['type'] = SERVER_TYPE
props['properties'] = resource.properties
profile_resources = \
HotResource(resource,
type='OS::Senlin::Profile',
name=resource.name,
properties=props)
resources.pop(index)
resources.insert(index, profile_resources)
for remove_resource in remove_resources:
resources.remove(remove_resource)
for index, resource in enumerate(resources):
if resource.name in self.policy.targets:
resource.properties['properties']['networks'] = \
networks[resource.name]
for node in self.policy.targets:
props = {}
props["profile"] = {'get_resource': '%s' % node}
temp = self.policy.entity_tpl["properties"]
props["min_size"] = temp["min_instances"]
props["max_size"] = temp["max_instances"]
props["desired_capacity"] = temp["default_instances"]
self.cluster_name = '%s_cluster' % node
cluster_resources = \
HotResource(self.nodetemplate,
type='OS::Senlin::Cluster',
name=self.cluster_name,
properties=props)
resources.append(cluster_resources)
trigger_num = len(self.policy.entity_tpl['triggers'])
for num, trigger in enumerate(self.policy.entity_tpl['triggers']):
target_cluster_nodes = []
for action in self.policy.\
entity_tpl['triggers'][trigger]['action']:
scale_type = self.policy.\
entity_tpl['triggers'][trigger]['action'][action]['type']
for node in self.policy.targets:
target_cluster_nodes.\
append({"get_resource": "%s_cluster" % node})
cluster_scale_type = SCALE_TYPE[scale_type]
scale_in_props = \
self._generate_scale_properties(target_cluster_nodes,
cluster_scale_type)
if num == trigger_num - 1:
self.name = self.name + '_' + trigger
self.properties = scale_in_props
break
policy_resources = \
HotResource(self.nodetemplate,
type='OS::Senlin::Policy',
name=self.name + '_' + trigger,
properties=scale_in_props)
resources.append(policy_resources)
return resources
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