func getPrivateIPs(ec2region *ec2.EC2) []string {
filter := ec2.NewFilter()
for _, tag := range *tags {
parts := strings.SplitN(tag, ":", 2)
if len(parts) != 2 {
log.Println("expected TAG:VALUE got", tag)
break
}
filter.Add(fmt.Sprintf("tag:%v", parts[0]), parts[1])
}
taggedInstances := []string{}
resp, err := ec2region.DescribeInstances(nil, filter)
if err != nil {
log.Println(err)
return taggedInstances
}
for _, rsv := range resp.Reservations {
for _, inst := range rsv.Instances {
taggedInstances = append(taggedInstances, inst.PrivateIPAddress)
}
}
return taggedInstances
}
