func releaseExternalIP(svc *ec2.EC2, instanceid string) error {
keyname := "instance-id"
filter := ec2.Filter{
Name: &keyname, Values: []*string{&instanceid}}
filters := []*ec2.Filter{
&filter,
}
dai := &ec2.DescribeAddressesInput{Filters: filters}
dao, err := svc.DescribeAddresses(dai)
if err != nil {
return err
}
for i := range dao.Addresses {
//fmt.Println("Address ",dao.Addresses[i])
dai := &ec2.DisassociateAddressInput{AssociationId: dao.Addresses[i].AssociationId}
_, err := svc.DisassociateAddress(dai)
//fmt.Println(daio)
if err != nil {
return err
}
rai := &ec2.ReleaseAddressInput{AllocationId: dao.Addresses[i].AllocationId}
_, err = svc.ReleaseAddress(rai)
//fmt.Println(rao)
if err != nil {
return err
}
}
return nil
}
func GetNotAssociateEIP(cli *ec2.EC2) (*ec2.Address, error) {
params := &ec2.DescribeAddressesInput{}
resp, err := cli.DescribeAddresses(params)
if err != nil {
return nil, err
}
if len(resp.Addresses) >= 1 {
for _, address := range resp.Addresses {
if address.InstanceId == nil {
return address, nil
}
}
}
return nil, nil
}
func GetEIPFromInstance(cli *ec2.EC2, instanceId string) (*ec2.Address, error) {
params := &ec2.DescribeAddressesInput{
Filters: []*ec2.Filter{
&ec2.Filter{
Name: aws.String("instance-id"),
Values: []*string{
aws.String(instanceId),
},
},
},
}
resp, err := cli.DescribeAddresses(params)
if err != nil {
return nil, err
}
if len(resp.Addresses) != 1 {
return nil, errors.New("this instance has not EIP.")
}
address := resp.Addresses[0]
return address, nil
}