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
|
#
# -------------------------------------------------------------------------
# Copyright (C) 2020 Wipro Limited.
#
# 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 conductor.i18n import _LI
from conductor.solver.optimizer.constraints import constraint
from conductor.solver.utils.utils import OPERATIONS
from oslo_log import log
LOG = log.getLogger(__name__)
class Threshold(constraint.Constraint):
def __init__(self, _name, _type, _demand_list, _priority=0,
_properties=None):
constraint.Constraint.__init__(
self, _name, _type, _demand_list, _priority)
self.properties_list = _properties.get('evaluate')
def solve(self, _decision_path, _candidate_list, _request):
conflict_list = list()
demand_name = _decision_path.current_demand.name
LOG.info(_LI("Solving constraint {} of type '{}' for demand - [{}]").format(
self.name, self.constraint_type, demand_name))
for candidate in _candidate_list:
for prop in self.properties_list:
attribute = prop.get('attribute')
threshold = prop.get('threshold')
operation = OPERATIONS.get(prop.get('operator'))
attribute_value = candidate.get(attribute)
if not operation(attribute_value, threshold):
conflict_list.append(candidate)
continue
filtered_candidates = [c for c in _candidate_list if c not in conflict_list]
return filtered_candidates
|
