packer-cn/builder/amazonebs/instance.go

40 lines
789 B
Go

package amazonebs
import (
"fmt"
"github.com/mitchellh/goamz/ec2"
"log"
"time"
)
func waitForState(ec2conn *ec2.EC2, originalInstance *ec2.Instance, pending []string, target string) (i *ec2.Instance, err error) {
log.Printf("Waiting for instance state to become: %s", target)
i = originalInstance
for i.State.Name != target {
found := false
for _, allowed := range pending {
if i.State.Name == allowed {
found = true
break
}
}
if !found {
fmt.Errorf("unexpected state '%s', wanted target '%s'", i.State.Name, target)
return
}
var resp *ec2.InstancesResp
resp, err = ec2conn.Instances([]string{i.InstanceId}, ec2.NewFilter())
if err != nil {
return
}
i = &resp.Reservations[0].Instances[0]
time.Sleep(2 * time.Second)
}
return
}