forked from prometheus-operator/prometheus-operator
-
Notifications
You must be signed in to change notification settings - Fork 0
/
datasource.go
106 lines (87 loc) · 2.33 KB
/
datasource.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
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
// Copyright 2016 The prometheus-operator 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 updater
import (
"log"
"os"
"path/filepath"
"github.com/coreos/prometheus-operator/contrib/grafana-watcher/grafana"
)
type GrafanaDatasourceUpdater struct {
client grafana.DatasourcesInterface
globs []string
}
func NewGrafanaDatasourceUpdater(c grafana.DatasourcesInterface, g []string) Updater {
return &GrafanaDatasourceUpdater{
client: c,
globs: g,
}
}
func (u *GrafanaDatasourceUpdater) Init() error {
return u.updateDatasources()
}
func (u *GrafanaDatasourceUpdater) OnModify() error {
return u.updateDatasources()
}
func (u *GrafanaDatasourceUpdater) updateDatasources() error {
err := u.deleteAllDatasources()
if err != nil {
return err
}
err = u.createDatasourcesFromFiles()
if err != nil {
return err
}
return nil
}
func (u *GrafanaDatasourceUpdater) deleteAllDatasources() error {
log.Println("Retrieving existing datasources")
datasources, err := u.client.All()
if err != nil {
return err
}
log.Printf("Deleting %d datasources\n", len(datasources))
for _, d := range datasources {
log.Println("Deleting datasource:", d.Name)
err := u.client.Delete(d.Id)
if err != nil {
return err
}
}
return nil
}
func (u *GrafanaDatasourceUpdater) createDatasourcesFromFiles() error {
for _, glob := range u.globs {
filePaths, err := filepath.Glob(filepath.Join(glob, "*-datasource.json"))
if err != nil {
return err
}
for _, fp := range filePaths {
err = u.createDatasourceFromFile(fp)
if err != nil {
return err
}
}
}
return nil
}
func (u *GrafanaDatasourceUpdater) createDatasourceFromFile(filePath string) error {
log.Println("Creating datasource from:", filePath)
f, err := os.Open(filePath)
if err != nil {
return err
}
defer f.Close()
return u.client.Create(f)
}