forked from knative/serving
/
dynamic_config.go
64 lines (52 loc) · 1.64 KB
/
dynamic_config.go
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
/*
Copyright 2018 The Knative Authors
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.
*/
package autoscaler
import (
"sync"
"go.uber.org/zap"
corev1 "k8s.io/api/core/v1"
)
type DynamicConfig struct {
mutex sync.RWMutex
config interface{} // discourage direct access as this is not goroutine safe
logger *zap.SugaredLogger
}
func NewDynamicConfig(config *Config, logger *zap.SugaredLogger) *DynamicConfig {
return &DynamicConfig{
logger: logger,
config: config.DeepCopy(),
}
}
func NewDynamicConfigFromMap(rawConfig map[string]string, logger *zap.SugaredLogger) (*DynamicConfig, error) {
config, err := NewConfigFromMap(rawConfig)
if err != nil {
return nil, err
}
return NewDynamicConfig(config, logger), nil
}
func (dc *DynamicConfig) Current() *Config {
dc.mutex.RLock()
defer dc.mutex.RUnlock()
return dc.config.(*Config).DeepCopy()
}
func (dc *DynamicConfig) Update(configMap *corev1.ConfigMap) {
config, err := NewConfigFromConfigMap(configMap)
if err != nil {
dc.logger.Errorf("Error updating autoscaler config: %v", err)
return
}
dc.mutex.Lock()
defer dc.mutex.Unlock()
dc.config = config
dc.logger.Infof("Autoscaler configuration updated: %v", configMap)
}