forked from kubernetes/kops
/
instance_elasticip_attachment.go
82 lines (65 loc) · 1.93 KB
/
instance_elasticip_attachment.go
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package awstasks
import (
"fmt"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/golang/glog"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
)
type InstanceElasticIPAttachment struct {
Instance *Instance
ElasticIP *ElasticIP
}
func (e *InstanceElasticIPAttachment) String() string {
return fi.TaskAsString(e)
}
func (e *InstanceElasticIPAttachment) Find(c *fi.Context) (*InstanceElasticIPAttachment, error) {
cloud := c.Cloud.(awsup.AWSCloud)
instanceID := e.Instance.ID
eipID := e.ElasticIP.ID
if instanceID == nil || eipID == nil {
return nil, nil
}
request := &ec2.DescribeAddressesInput{
AllocationIds: []*string{eipID},
}
response, err := cloud.EC2().DescribeAddresses(request)
if err != nil {
return nil, fmt.Errorf("error listing ElasticIPs: %v", err)
}
if response == nil || len(response.Addresses) == 0 {
return nil, nil
}
if len(response.Addresses) != 1 {
glog.Fatalf("found multiple ElasticIPs for public IP")
}
a := response.Addresses[0]
actual := &InstanceElasticIPAttachment{}
if a.InstanceId != nil {
actual.Instance = &Instance{ID: a.InstanceId}
}
actual.ElasticIP = &ElasticIP{ID: a.AllocationId}
return actual, nil
}
func (e *InstanceElasticIPAttachment) Run(c *fi.Context) error {
return fi.DefaultDeltaRunMethod(e, c)
}
func (s *InstanceElasticIPAttachment) CheckChanges(a, e, changes *InstanceElasticIPAttachment) error {
return nil
}
func (_ *InstanceElasticIPAttachment) RenderAWS(t *awsup.AWSAPITarget, a, e, changes *InstanceElasticIPAttachment) error {
if changes.Instance != nil {
err := t.WaitForInstanceRunning(*e.Instance.ID)
if err != nil {
return err
}
request := &ec2.AssociateAddressInput{}
request.InstanceId = e.Instance.ID
request.AllocationId = a.ElasticIP.ID
_, err = t.Cloud.EC2().AssociateAddress(request)
if err != nil {
return fmt.Errorf("error creating InstanceElasticIPAttachment: %v", err)
}
}
return nil // no tags
}