-
Notifications
You must be signed in to change notification settings - Fork 295
/
gcp_meta_data.go
75 lines (62 loc) · 1.56 KB
/
gcp_meta_data.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
package agent
import (
"errors"
"strings"
"cloud.google.com/go/compute/metadata"
)
type GCPMetaData struct {
}
func (e GCPMetaData) Get() (map[string]string, error) {
result := make(map[string]string)
instanceId, err := metadata.Get("instance/id")
if err != nil {
return result, err
}
result["gcp:instance-id"] = instanceId
machineType, err := machineType()
if err != nil {
return result, err
}
result["gcp:machine-type"] = machineType
preemptible, err := metadata.Get("instance/scheduling/preemptible")
if err != nil {
return result, err
}
result["gcp:preemptible"] = strings.ToLower(preemptible)
projectId, err := metadata.ProjectID()
if err != nil {
return result, err
}
result["gcp:project-id"] = projectId
zone, err := metadata.Zone()
if err != nil {
return result, err
}
result["gcp:zone"] = zone
region, err := parseRegionFromZone(zone)
if err != nil {
return result, err
}
result["gcp:region"] = region
return result, nil
}
func machineType() (string, error) {
machType, err := metadata.Get("instance/machine-type")
// machType is of the form "projects/<projNum>/machineTypes/<machType>".
if err != nil {
return "", err
}
index := strings.LastIndex(machType, "/")
if index == -1 {
return "", errors.New("cannot parse machine-type: " + machType)
}
return machType[index+1:], nil
}
func parseRegionFromZone(zone string) (string, error) {
// zone is of the form "<region>-<letter>".
index := strings.LastIndex(zone, "-")
if index == -1 {
return "", errors.New("cannot parse zone: " + zone)
}
return zone[:index], nil
}