1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
#
# 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
|
