func listVolumes(client *ec2.EC2, filter *ec2.Filter) ([]string, error) {
resp, err := client.Volumes(nil, filter)
if err != nil {
return nil, err
}
volumeIds := make([]string, 0, len(resp.Volumes))
for _, vol := range resp.Volumes {
var isRootDisk bool
for _, att := range vol.Attachments {
if att.Device == rootDiskDeviceName {
isRootDisk = true
break
}
}
if isRootDisk {
// We don't want to list root disks in the output.
// These are managed by the instance provisioning
// code; they will be created and destroyed with
// instances.
continue
}
volumeIds = append(volumeIds, vol.Id)
}
return volumeIds, nil
}
func describeVolume(client *ec2.EC2, volumeId string) (*ec2.Volume, error) {
resp, err := client.Volumes([]string{volumeId}, nil)
if err != nil {
return nil, errors.Annotate(err, "querying volume")
}
if len(resp.Volumes) == 0 {
return nil, errors.NotFoundf("%v", volumeId)
} else if len(resp.Volumes) != 1 {
return nil, errors.Errorf("expected one volume, got %d", len(resp.Volumes))
}
return &resp.Volumes[0], nil
}
/**
* Load a volume passing its Id
*/
func Load(ec2Ref *ec2.EC2, volume *Volume) (ec2.Volume, error) {
if volume.Id == "" {
return ec2.Volume{}, errors.New("To load a volume you need to pass its Id")
}
resp, err := ec2Ref.Volumes([]string{volume.Id}, nil)
if err != nil {
return ec2.Volume{}, err
} else if len(resp.Volumes) == 0 {
return ec2.Volume{}, errors.New(fmt.Sprintf("Any volume was found with volume Id <%s>", volume.Id))
}
volumeRef := resp.Volumes[0]
mergeVolumes(volume, &volumeRef)
return volumeRef, nil
}
// Load a volume passing its Id
func Load(ec2Ref *ec2.EC2, volume *Volume) (ec2.Volume, error) {
if volume.ID == "" {
return ec2.Volume{}, errors.New("To load a volume you need to pass its Id")
}
resp, err := ec2Ref.Volumes([]string{volume.ID}, nil)
if err != nil {
return ec2.Volume{}, err
} else if len(resp.Volumes) == 0 {
return ec2.Volume{}, fmt.Errorf("Any volume was found with volume Id <%s>", volume.ID)
}
ec2Volume := resp.Volumes[0]
mergeVolumes(volume, &ec2Volume)
return ec2Volume, nil
}
