113 lines
2.9 KiB
Go
113 lines
2.9 KiB
Go
package ebs
|
|
|
|
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/builder/amazon/common"
|
|
"github.com/mitchellh/packer/packer"
|
|
)
|
|
|
|
// stepCleanupVolumes cleans up any orphaned volumes that were not designated to
|
|
// remain after termination of the instance. These volumes are typically ones
|
|
// that are marked as "delete on terminate:false" in the source_ami of a build.
|
|
type stepCleanupVolumes struct {
|
|
BlockDevices common.BlockDevices
|
|
}
|
|
|
|
func (s *stepCleanupVolumes) Run(state multistep.StateBag) multistep.StepAction {
|
|
// stepCleanupVolumes is for Cleanup only
|
|
return multistep.ActionContinue
|
|
}
|
|
|
|
func (s *stepCleanupVolumes) Cleanup(state multistep.StateBag) {
|
|
ec2conn := state.Get("ec2").(*ec2.EC2)
|
|
instanceRaw := state.Get("instance")
|
|
var instance *ec2.Instance
|
|
if instanceRaw != nil {
|
|
instance = instanceRaw.(*ec2.Instance)
|
|
}
|
|
ui := state.Get("ui").(packer.Ui)
|
|
if instance == nil {
|
|
ui.Say("No volumes to clean up, skipping")
|
|
return
|
|
}
|
|
|
|
ui.Say("Cleaning up any extra volumes...")
|
|
|
|
// We don't actually care about the value here, but we need Set behavior
|
|
save := make(map[string]struct{})
|
|
for _, b := range s.BlockDevices.AMIMappings {
|
|
if !b.DeleteOnTermination {
|
|
save[b.DeviceName] = struct{}{}
|
|
}
|
|
}
|
|
|
|
for _, b := range s.BlockDevices.LaunchMappings {
|
|
if !b.DeleteOnTermination {
|
|
save[b.DeviceName] = struct{}{}
|
|
}
|
|
}
|
|
|
|
// Collect Volume information from the cached Instance as a map of volume-id
|
|
// to device name, to compare with save list above
|
|
var vl []*string
|
|
volList := make(map[string]string)
|
|
for _, bdm := range instance.BlockDeviceMappings {
|
|
if bdm.Ebs != nil {
|
|
vl = append(vl, bdm.Ebs.VolumeId)
|
|
volList[*bdm.Ebs.VolumeId] = *bdm.DeviceName
|
|
}
|
|
}
|
|
|
|
// Using the volume list from the cached Instance, check with AWS for up to
|
|
// date information on them
|
|
resp, err := ec2conn.DescribeVolumes(&ec2.DescribeVolumesInput{
|
|
Filters: []*ec2.Filter{
|
|
{
|
|
Name: aws.String("volume-id"),
|
|
Values: vl,
|
|
},
|
|
},
|
|
})
|
|
|
|
if err != nil {
|
|
ui.Say(fmt.Sprintf("Error describing volumes: %s", err))
|
|
return
|
|
}
|
|
|
|
// If any of the returned volumes are in a "deleting" stage or otherwise not
|
|
// available, remove them from the list of volumes
|
|
for _, v := range resp.Volumes {
|
|
if v.State != nil && *v.State != "available" {
|
|
delete(volList, *v.VolumeId)
|
|
}
|
|
}
|
|
|
|
if len(resp.Volumes) == 0 {
|
|
ui.Say("No volumes to clean up, skipping")
|
|
return
|
|
}
|
|
|
|
// Filter out any devices marked for saving
|
|
for saveName := range save {
|
|
for volKey, volName := range volList {
|
|
if volName == saveName {
|
|
delete(volList, volKey)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Destroy remaining volumes
|
|
for k := range volList {
|
|
ui.Say(fmt.Sprintf("Destroying volume (%s)...", k))
|
|
_, err := ec2conn.DeleteVolume(&ec2.DeleteVolumeInput{VolumeId: aws.String(k)})
|
|
if err != nil {
|
|
ui.Say(fmt.Sprintf("Error deleting volume: %s", k))
|
|
}
|
|
|
|
}
|
|
}
|