packer-cn/builder/amazon/common/step_deregister_ami.go

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package common
import (
"fmt"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
type StepDeregisterAMI struct {
ForceDeregister bool
ForceDeleteSnapshot bool
AMIName string
}
func (s *StepDeregisterAMI) Run(state multistep.StateBag) multistep.StepAction {
ec2conn := state.Get("ec2").(*ec2.EC2)
ui := state.Get("ui").(packer.Ui)
// Check for force deregister
if s.ForceDeregister {
resp, err := ec2conn.DescribeImages(&ec2.DescribeImagesInput{
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Filters: []*ec2.Filter{{
Name: aws.String("name"),
Values: []*string{aws.String(s.AMIName)},
}}})
if err != nil {
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err := fmt.Errorf("Error describing AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Deregister image(s) by name
for _, i := range resp.Images {
_, err := ec2conn.DeregisterImage(&ec2.DeregisterImageInput{
ImageId: i.ImageId,
})
if err != nil {
err := fmt.Errorf("Error deregistering existing AMI: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
ui.Say(fmt.Sprintf("Deregistered AMI %s, id: %s", s.AMIName, *i.ImageId))
// Delete snapshot(s) by image
if s.ForceDeleteSnapshot {
for _, b := range i.BlockDeviceMappings {
if b.Ebs != nil {
_, err := ec2conn.DeleteSnapshot(&ec2.DeleteSnapshotInput{
SnapshotId: b.Ebs.SnapshotId,
})
if err != nil {
err := fmt.Errorf("Error deleting existing snapshot: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
ui.Say(fmt.Sprintf("Deleted snapshot: %s", *b.Ebs.SnapshotId))
}
}
}
}
}
return multistep.ActionContinue
}
func (s *StepDeregisterAMI) Cleanup(state multistep.StateBag) {
}