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vbox_storage.go
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vbox_storage.go
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package storage
import (
"path/filepath"
"strings"
"sync"
log "github.com/sirupsen/logrus"
gofig "github.com/akutz/gofig/types"
"github.com/akutz/goof"
vboxw "github.com/appropriate/go-virtualboxclient/vboxwebsrv"
vboxc "github.com/appropriate/go-virtualboxclient/virtualboxclient"
"github.com/codedellemc/rexray/libstorage/api/context"
"github.com/codedellemc/rexray/libstorage/api/registry"
"github.com/codedellemc/rexray/libstorage/api/types"
apiUtils "github.com/codedellemc/rexray/libstorage/api/utils"
"github.com/codedellemc/rexray/libstorage/drivers/storage/vbox"
)
const (
minSizeGiB = 1
)
// Driver represents a vbox driver implementation of StorageDriver
type driver struct {
sync.Mutex
config gofig.Config
vbox *vboxc.VirtualBox
}
func init() {
registry.RegisterStorageDriver(vbox.Name, newDriver)
}
func newDriver() types.StorageDriver {
return &driver{}
}
// Name returns the name of the driver
func (d *driver) Name() string {
return vbox.Name
}
// Init initializes the driver.
func (d *driver) Init(ctx types.Context, config gofig.Config) error {
d.config = config
fields := map[string]interface{}{
"provider": vbox.Name,
"moduleName": vbox.Name,
"endpoint": d.endpoint(),
"userName": d.username(),
"tls": d.tls(),
"volumePath": d.volumePath(),
"controllerName": d.controllerName(),
"machineNameOrId": d.machineNameID(""),
}
ctx.Info("initializing driver: ", fields)
d.vbox = vboxc.New(d.username(), d.password(),
d.endpoint(), d.tls(), d.controllerName())
if err := d.vbox.Logon(); err != nil {
return goof.WithFieldsE(fields,
"error logging in", err)
}
ctx.WithFields(fields).Info("storage driver initialized")
return nil
}
// LocalDevices returns a map of the system's local devices.
func (d *driver) LocalDevices(
ctx types.Context, opts types.Store) (*types.LocalDevices, error) {
if ld, ok := context.LocalDevices(ctx); ok {
return ld, nil
}
return nil, goof.New("missing local devices")
}
// NextDevice returns the next available device (not implemented).
func (d *driver) NextDevice(
ctx types.Context,
opts types.Store) (string, error) {
return "", nil
}
// Type returns the type of storage a driver provides
func (d *driver) Type(ctx types.Context) (types.StorageType, error) {
return types.Block, nil
}
// NextDeviceInfo returns the information about the driver's next available
// device workflow.
func (d *driver) NextDeviceInfo(
ctx types.Context) (*types.NextDeviceInfo, error) {
return nil, nil
}
// InstanceInspect returns an instance.
func (d *driver) InstanceInspect(
ctx types.Context,
opts types.Store) (*types.Instance, error) {
iid := context.MustInstanceID(ctx)
if iid.ID != "" {
return &types.Instance{InstanceID: iid}, nil
}
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
var macAddrs []string
if err := iid.UnmarshalMetadata(&macAddrs); err != nil {
return nil, err
}
var (
m *vboxc.Machine
err error
)
if m, err = d.findMachineByMacAddrs(ctx, macAddrs); err != nil {
nameOrID := d.config.GetString("virtualbox.localMachineNameOrId")
if m, err = d.findMachineByNameOrID(ctx, nameOrID); err != nil {
return nil, goof.WithFieldsE(
log.Fields{
"macAddres": macAddrs,
"virtualbox.localMachineNameOrId": nameOrID,
}, "failed to find local machine", err)
}
}
if m == nil {
return nil, goof.New("machine not found")
}
return &types.Instance{
InstanceID: &types.InstanceID{
ID: m.ID,
Driver: vbox.Name,
},
}, nil
}
// Volumes returns all volumes or a filtered list of volumes.
func (d *driver) getVolumeMapping(ctx types.Context) ([]*types.Volume, error) {
var (
err error
mapDiskByID map[string]string
mas []*vboxw.IMediumAttachment
m *vboxc.Machine
iid = context.MustInstanceID(ctx)
)
m, err = d.findMachineByInstanceID(ctx, iid)
if err != nil {
return nil, err
}
if err = m.Refresh(); err != nil {
return nil, err
}
defer m.Release()
ld, ok := context.LocalDevices(ctx)
if !ok {
return nil, goof.New("missing local devices")
}
mapDiskByID = ld.DeviceMap
mas, err = m.GetMediumAttachments()
if err != nil {
return nil, err
}
var blockDevices []*types.Volume
for _, ma := range mas {
medium := d.vbox.NewMedium(ma.Medium)
defer medium.Release()
mid, err := medium.GetID()
if err != nil {
return nil, err
}
smid := strings.Split(mid, "-")
if len(smid) == 0 {
continue
}
location, err := medium.GetLocation()
if err != nil {
return nil, err
}
var bdn string
var ok bool
if bdn, ok = mapDiskByID[smid[0]]; !ok {
continue
}
sdBlockDevice := &types.Volume{
Name: bdn,
ID: mid,
Status: location,
}
blockDevices = append(blockDevices, sdBlockDevice)
}
return blockDevices, nil
}
// VolumeCreate creates a new volume.
func (d *driver) VolumeCreate(ctx types.Context, volumeName string,
opts *types.VolumeCreateOpts) (*types.Volume, error) {
d.Lock()
defer d.Unlock()
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
fields := map[string]interface{}{
"provider": vbox.Name,
"volumeName": volumeName,
}
if opts.Size == nil {
size := int64(minSizeGiB)
opts.Size = &size
}
fields["size"] = *opts.Size
if *opts.Size < minSizeGiB {
fields["minSize"] = minSizeGiB
return nil, goof.WithFields(fields, "volume size too small")
}
size := *opts.Size * 1024 * 1024 * 1024
vol, err := d.getVolume(ctx, "", volumeName, types.VolAttFalse)
if err != nil {
return nil, err
}
if vol != nil {
return nil, goof.New("volume already exists")
}
med, err := d.createVolume(ctx, volumeName, size)
if err != nil {
return nil, goof.WithFieldsE(fields, "error creating new volume", err)
}
var iops int64
if opts.IOPS != nil {
iops = *opts.IOPS
}
newVol := &types.Volume{
ID: med.ID,
Name: med.Name,
Size: med.LogicalSize / 1024 / 1024 / 1024,
IOPS: iops,
Type: string(med.DeviceType),
}
return newVol, nil
}
// VolumeCreateFromSnapshot (not implemented).
func (d *driver) VolumeCreateFromSnapshot(
ctx types.Context,
snapshotID, volumeName string,
opts *types.VolumeCreateOpts) (*types.Volume, error) {
return nil, types.ErrNotImplemented
}
// VolumeCopy copies an existing volume (not implemented)
func (d *driver) VolumeCopy(
ctx types.Context,
volumeID, volumeName string,
opts types.Store) (*types.Volume, error) {
return nil, types.ErrNotImplemented
}
// VolumeSnapshot snapshots a volume (not implemented)
func (d *driver) VolumeSnapshot(
ctx types.Context,
volumeID, snapshotName string,
opts types.Store) (*types.Snapshot, error) {
return nil, types.ErrNotImplemented
}
// VolumeRemove removes a volume.
func (d *driver) VolumeRemove(
ctx types.Context,
volumeID string,
opts *types.VolumeRemoveOpts) error {
d.Lock()
defer d.Unlock()
if err := d.refreshSession(ctx); err != nil {
return err
}
fields := map[string]interface{}{
"provider": vbox.Name,
"volumeID": volumeID,
}
err := d.vbox.RemoveMedium(volumeID)
if err != nil {
return goof.WithFieldsE(fields, "error deleting volume", err)
}
return nil
}
// VolumeAttach attaches a volume.
func (d *driver) VolumeAttach(
ctx types.Context,
volumeID string,
opts *types.VolumeAttachOpts) (*types.Volume, string, error) {
if err := d.refreshSession(ctx); err != nil {
return nil, "", err
}
if volumeID == "" {
return nil, "", goof.New("missing volume id")
}
// review volume with attachments to any host
volumes, err := d.getVolume(ctx, volumeID, "", types.VolAttReq)
if err != nil {
return nil, "", err
}
if len(volumes) == 0 {
return nil, "", apiUtils.NewNotFoundError(volumeID)
}
if len(volumes[0].Attachments) > 0 && !opts.Force {
return nil, "", goof.New("volume already attached to a host")
}
if opts.Force {
if _, err = d.VolumeDetach(ctx, volumeID, nil); err != nil {
return nil, "", err
}
}
err = d.attachVolume(ctx, volumeID, "")
if err != nil {
return nil, "", goof.WithFieldsE(
log.Fields{
"provider": vbox.Name,
"volumeID": volumeID},
"error attaching volume",
err,
)
}
volumes, err = d.getVolume(ctx, volumeID, "", types.VolAttReqTrue)
if err != nil {
return nil, "", err
}
if len(volumes) == 0 {
return nil, "", err
}
svid := strings.Split(volumes[0].ID, "-")
return volumes[0], svid[0], nil
}
// VolumeDetach detaches a volume.
func (d *driver) VolumeDetach(
ctx types.Context,
volumeID string,
opts *types.VolumeDetachOpts) (*types.Volume, error) {
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
if volumeID == "" {
return nil, goof.New("missing volume id")
}
volumes, err := d.getVolume(ctx, volumeID, "", types.VolAttFalse)
if err != nil {
return nil, err
}
if len(volumes) == 0 {
return nil, apiUtils.NewNotFoundError(volumeID)
}
// TODO: Check if volumes[[0].Attachments > 0?
if err := d.detachVolume(ctx, volumeID, ""); err != nil {
return nil, goof.WithFieldsE(
log.Fields{
"provier": vbox.Name,
"volumeID": volumeID}, "error detaching volume", err)
}
ctx.Info("detached volume", volumeID)
return d.VolumeInspect(
ctx, volumeID, &types.VolumeInspectOpts{
Attachments: types.VolAttReqTrue})
}
func (d *driver) VolumeDetachAll(
ctx types.Context,
volumeID string,
opts types.Store) error {
return nil
}
func (d *driver) Snapshots(
ctx types.Context,
opts types.Store) ([]*types.Snapshot, error) {
return nil, nil
}
func (d *driver) SnapshotInspect(
ctx types.Context,
snapshotID string,
opts types.Store) (*types.Snapshot, error) {
return nil, nil
}
func (d *driver) SnapshotCopy(
ctx types.Context,
snapshotID, snapshotName, destinationID string,
opts types.Store) (*types.Snapshot, error) {
return nil, nil
}
func (d *driver) SnapshotRemove(
ctx types.Context,
snapshotID string,
opts types.Store) error {
return nil
}
func (d *driver) Volumes(
ctx types.Context,
opts *types.VolumesOpts) ([]*types.Volume, error) {
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
vols, err := d.getVolume(ctx, "", "", opts.Attachments)
if err != nil {
return nil, err
}
return vols, nil
}
func (d *driver) VolumeInspect(
ctx types.Context,
volumeID string,
opts *types.VolumeInspectOpts) (*types.Volume, error) {
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
vols, err := d.getVolume(ctx, volumeID, "", opts.Attachments)
if err != nil {
return nil, err
}
if len(vols) == 0 {
return nil, apiUtils.NewNotFoundError(volumeID)
}
return vols[0], nil
}
// getVolume searches and returns a volume matching criteria
func (d *driver) getVolume(
ctx types.Context,
volumeID string, volumeName string,
attachments types.VolumeAttachmentsTypes) ([]*types.Volume, error) {
if err := d.refreshSession(ctx); err != nil {
return nil, err
}
volumes, err := d.vbox.GetMedium(volumeID, volumeName)
if err != nil {
return nil, err
}
if len(volumes) == 0 {
return nil, nil
}
var mapDN map[string]string
if attachments.Devices() {
volumeMapping, err := d.getVolumeMapping(ctx)
if err != nil {
return nil, err
}
mapDN = make(map[string]string)
for _, vm := range volumeMapping {
mapDN[vm.ID] = vm.Name
}
}
var volumesSD []*types.Volume
for _, v := range volumes {
volumeSD := &types.Volume{
Name: v.Name,
ID: v.ID,
Size: int64(v.LogicalSize / 1024 / 1024 / 1024),
Status: v.Location,
Type: string(v.DeviceType),
}
if attachments.Requested() {
var attachmentsSD []*types.VolumeAttachment
for _, mid := range v.MachineIDs {
attachmentSD := &types.VolumeAttachment{
VolumeID: v.ID,
InstanceID: &types.InstanceID{
ID: mid,
Driver: vbox.Name,
},
}
if attachments.Devices() && mapDN != nil {
dn, _ := mapDN[v.ID]
attachmentSD.DeviceName = dn
}
attachmentsSD = append(attachmentsSD, attachmentSD)
}
volumeSD.Attachments = attachmentsSD
}
volumesSD = append(volumesSD, volumeSD)
}
return volumesSD, nil
}
func (d *driver) findMachineByInstanceID(
ctx types.Context,
iid *types.InstanceID) (*vboxc.Machine, error) {
return d.findMachineByNameOrID(ctx, iid.ID)
}
func (d *driver) findMachineByNameOrID(
ctx types.Context, nameOrID string) (*vboxc.Machine, error) {
ctx.WithField("nameOrID", nameOrID).Debug("finding local machine")
m, err := d.vbox.FindMachine(nameOrID)
if err != nil {
return nil, err
}
if m == nil {
return nil, goof.New("could not find machine")
}
if id, err := m.GetID(); err == nil {
m.ID = id
} else {
return nil, err
}
if name, err := m.GetName(); err == nil {
m.Name = name
} else {
return nil, err
}
return m, nil
}
func (d *driver) findMachineByMacAddrs(
ctx types.Context, macAddrs []string) (*vboxc.Machine, error) {
ctx.WithField("macAddrs", macAddrs).Debug("finding local machine")
macMap := make(map[string]bool)
for _, mac := range macAddrs {
macUp := mac
macMap[macUp] = true
}
machines, err := d.vbox.GetMachines()
if err != nil {
return nil, err
}
sp, err := d.vbox.GetSystemProperties()
if err != nil {
return nil, err
}
defer sp.Release()
for _, m := range machines {
defer m.Release()
chipset, err := m.GetChipsetType()
if err != nil {
return nil, err
}
mna, err := sp.GetMaxNetworkAdapters(chipset)
if err != nil {
return nil, err
}
for i := uint32(0); i < mna; i++ {
na, err := m.GetNetworkAdapter(i)
if err != nil {
return nil, err
}
mac, err := na.GetMACAddress()
if err != nil {
return nil, err
}
if _, ok := macMap[mac]; ok {
id, err := m.GetID()
if err != nil {
return nil, err
}
m.ID = id
name, err := m.GetName()
if err != nil {
return nil, err
}
m.Name = name
return m, nil
}
}
}
return nil, goof.New("unable to find machine")
}
// TODO too costly, need better way to validate session (i.e. some delay)
func (d *driver) refreshSession(ctx types.Context) error {
return d.vbox.Logon()
}
func (d *driver) createVolume(
ctx types.Context, name string, size int64) (*vboxc.Medium, error) {
if name == "" {
return nil, goof.New("name is empty")
}
path := filepath.Join(d.volumePath(), name)
ctx.WithField("path", path).Debug("creating vmdk")
return d.vbox.CreateMedium("vmdk", path, size)
}
func (d *driver) attachVolume(
ctx types.Context, volumeID, volumeName string) error {
iid := context.MustInstanceID(ctx)
m, err := d.findMachineByInstanceID(ctx, iid)
if err != nil {
return err
}
if err = m.Refresh(); err != nil {
return err
}
defer m.Release()
medium, err := d.vbox.GetMedium(volumeID, volumeName)
if err != nil {
return err
}
if len(medium) == 0 {
return goof.New("no volume returned")
}
if len(medium) > 1 {
return goof.New("too many volumes returned")
}
if err := m.AttachDevice(medium[0]); err != nil {
return err
}
return nil
}
func (d *driver) detachVolume(
ctx types.Context, volumeID, volumeName string) error {
iid := context.MustInstanceID(ctx)
m, err := d.findMachineByInstanceID(ctx, iid)
if err != nil {
return err
}
if err = m.Refresh(); err != nil {
return err
}
defer m.Release()
media, err := d.vbox.GetMedium(volumeID, volumeName)
if err != nil {
return err
}
if len(media) == 0 {
return goof.New("no volume returned")
}
if len(media) > 1 {
return goof.New("too many volumes returned")
}
if err := media[0].DetachMachines(); err != nil {
return err
}
return nil
}
func (d *driver) username() string {
return d.config.GetString("virtualbox.username")
}
func (d *driver) password() string {
return d.config.GetString("virtualbox.password")
}
func (d *driver) endpoint() string {
return d.config.GetString("virtualbox.endpoint")
}
func (d *driver) volumePath() string {
return d.config.GetString("virtualbox.volumePath")
}
func (d *driver) controllerName() string {
return d.config.GetString("virtualbox.controllerName")
}
func (d *driver) tls() bool {
return d.config.GetBool("virtualbox.tls")
}
func (d *driver) machineNameID(nameOrID string) string {
if nameOrID != "" {
return nameOrID
}
return d.config.GetString("virtualbox.localMachineNameOrId")
}