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gcp.go
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gcp.go
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package metadata
import (
gcp "cloud.google.com/go/compute/metadata"
"k8s.io/klog/v2"
"net/http"
"strings"
)
func getGcpMetadata() *CloudMetadata {
hc := http.DefaultClient
hc.Timeout = metadataServiceTimeout
c := gcp.NewClient(hc)
md := &CloudMetadata{
Provider: CloudProviderGCP,
AccountId: getGcpMetadataVariable(c, "project/project-id"),
InstanceId: getGcpMetadataVariable(c, "instance/id"),
LocalIPv4: getGcpMetadataVariable(c, "instance/network-interfaces/0/ip"),
PublicIPv4: getGcpMetadataVariable(c, "instance/network-interfaces/0/access-configs/0/external-ip"),
}
switch strings.ToLower(getGcpMetadataVariable(c, "instance/scheduling/preemptible")) {
case "false":
md.LifeCycle = "on-demand"
case "true":
md.LifeCycle = "preemptible"
}
// projects/PROJECT_NUM/machineTypes/MACHINE_TYPE
if parts := strings.SplitN(getGcpMetadataVariable(c, "instance/machine-type"), "/", 4); len(parts) == 4 {
md.InstanceType = parts[3]
}
// projects/PROJECT_NUM/zones/ZONE
if parts := strings.SplitN(getGcpMetadataVariable(c, "instance/zone"), "/", 4); len(parts) == 4 {
md.AvailabilityZone = parts[3]
if idx := strings.LastIndex(md.AvailabilityZone, "-"); idx != -1 {
md.Region = md.AvailabilityZone[:idx]
}
}
return md
}
func getGcpMetadataVariable(client *gcp.Client, path string) string {
s, err := client.Get(path)
if err != nil {
klog.Errorln(path, err)
}
return s
}