rebase: update go-ceph to v0.8.0

Updating go-ceph to v0.8.0.

Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>

vendor/github.com/ceph/go-ceph/rbd/mirror.go

@@ -0,0 +1,235 @@
+// +build !nautilus
+
+// Initially, we're only providing mirroring related functions for octopus as
+// that version of ceph deprecated a number of the functions in nautilus. If
+// you need mirroring on an earlier supported version of ceph please file an
+// issue in our tracker.
+
+package rbd
+
+// #cgo LDFLAGS: -lrbd
+// #include <stdlib.h>
+// #include <rbd/librbd.h>
+import "C"
+
+import (
+	"unsafe"
+
+	"github.com/ceph/go-ceph/internal/retry"
+	"github.com/ceph/go-ceph/rados"
+)
+
+// MirrorMode is used to indicate an approach used for RBD mirroring.
+type MirrorMode int64
+
+const (
+	// MirrorModeDisabled disables mirroring.
+	MirrorModeDisabled = MirrorMode(C.RBD_MIRROR_MODE_DISABLED)
+	// MirrorModeImage enables mirroring on a per-image basis.
+	MirrorModeImage = MirrorMode(C.RBD_MIRROR_MODE_IMAGE)
+	// MirrorModePool enables mirroring on all journaled images.
+	MirrorModePool = MirrorMode(C.RBD_MIRROR_MODE_POOL)
+)
+
+// ImageMirrorMode is used to indicate the mirroring approach for an RBD image.
+type ImageMirrorMode int64
+
+const (
+	// ImageMirrorModeJournal uses journaling to propagate RBD images between
+	// ceph clusters.
+	ImageMirrorModeJournal = ImageMirrorMode(C.RBD_MIRROR_IMAGE_MODE_JOURNAL)
+	// ImageMirrorModeSnapshot uses snapshots to propagate RBD images between
+	// ceph clusters.
+	ImageMirrorModeSnapshot = ImageMirrorMode(C.RBD_MIRROR_IMAGE_MODE_SNAPSHOT)
+)
+
+// SetMirrorMode is used to enable or disable pool level mirroring with either
+// an automatic or per-image behavior.
+//
+// Implements:
+//  int rbd_mirror_mode_set(rados_ioctx_t io_ctx,
+//                          rbd_mirror_mode_t mirror_mode);
+func SetMirrorMode(ioctx *rados.IOContext, mode MirrorMode) error {
+	ret := C.rbd_mirror_mode_set(
+		cephIoctx(ioctx),
+		C.rbd_mirror_mode_t(mode))
+	return getError(ret)
+}
+
+// GetMirrorMode is used to fetch the current mirroring mode for a pool.
+//
+// Implements:
+//  int rbd_mirror_mode_get(rados_ioctx_t io_ctx,
+//                          rbd_mirror_mode_t *mirror_mode);
+func GetMirrorMode(ioctx *rados.IOContext) (MirrorMode, error) {
+	var mode C.rbd_mirror_mode_t
+
+	ret := C.rbd_mirror_mode_get(
+		cephIoctx(ioctx),
+		&mode)
+	if err := getError(ret); err != nil {
+		return MirrorModeDisabled, err
+	}
+	return MirrorMode(mode), nil
+}
+
+// MirrorEnable will enable mirroring for an image using the specified mode.
+//
+// Implements:
+//  int rbd_mirror_image_enable2(rbd_image_t image,
+//                               rbd_mirror_image_mode_t mode);
+func (image *Image) MirrorEnable(mode ImageMirrorMode) error {
+	if err := image.validate(imageIsOpen); err != nil {
+		return err
+	}
+	ret := C.rbd_mirror_image_enable2(image.image, C.rbd_mirror_image_mode_t(mode))
+	return getError(ret)
+}
+
+// MirrorDisable will disable mirroring for the image.
+//
+// Implements:
+//  int rbd_mirror_image_disable(rbd_image_t image, bool force);
+func (image *Image) MirrorDisable(force bool) error {
+	if err := image.validate(imageIsOpen); err != nil {
+		return err
+	}
+	ret := C.rbd_mirror_image_disable(image.image, C.bool(force))
+	return getError(ret)
+}
+
+// MirrorPromote will promote the image to primary status.
+//
+// Implements:
+//  int rbd_mirror_image_promote(rbd_image_t image, bool force);
+func (image *Image) MirrorPromote(force bool) error {
+	if err := image.validate(imageIsOpen); err != nil {
+		return err
+	}
+	ret := C.rbd_mirror_image_promote(image.image, C.bool(force))
+	return getError(ret)
+}
+
+// MirrorDemote will demote the image to secondary status.
+//
+// Implements:
+//  int rbd_mirror_image_demote(rbd_image_t image);
+func (image *Image) MirrorDemote() error {
+	if err := image.validate(imageIsOpen); err != nil {
+		return err
+	}
+	ret := C.rbd_mirror_image_demote(image.image)
+	return getError(ret)
+}
+
+// MirrorResync is used to manually resolve split-brain status by triggering
+// resynchronization.
+//
+// Implements:
+//  int rbd_mirror_image_resync(rbd_image_t image);
+func (image *Image) MirrorResync() error {
+	if err := image.validate(imageIsOpen); err != nil {
+		return err
+	}
+	ret := C.rbd_mirror_image_resync(image.image)
+	return getError(ret)
+}
+
+// MirrorInstanceID returns a string naming the instance id for the image.
+//
+// Implements:
+//  int rbd_mirror_image_get_instance_id(rbd_image_t image,
+//                                       char *instance_id,
+//                                       size_t *id_max_length);
+func (image *Image) MirrorInstanceID() (string, error) {
+	if err := image.validate(imageIsOpen); err != nil {
+		return "", err
+	}
+	var (
+		err   error
+		buf   []byte
+		cSize C.size_t
+	)
+	retry.WithSizes(1024, 1<<16, func(size int) retry.Hint {
+		cSize = C.size_t(size)
+		buf = make([]byte, cSize)
+		ret := C.rbd_mirror_image_get_instance_id(
+			image.image,
+			(*C.char)(unsafe.Pointer(&buf[0])),
+			&cSize)
+		err = getErrorIfNegative(ret)
+		return retry.Size(int(cSize)).If(err == errRange)
+	})
+	if err != nil {
+		return "", err
+	}
+	return string(buf[:cSize]), nil
+}
+
+// MirrorImageState represents the mirroring state of a RBD image.
+type MirrorImageState C.rbd_mirror_image_state_t
+
+const (
+	// MirrorImageDisabling is the representation of
+	// RBD_MIRROR_IMAGE_DISABLING from librbd.
+	MirrorImageDisabling = MirrorImageState(C.RBD_MIRROR_IMAGE_DISABLING)
+	// MirrorImageEnabled is the representation of
+	// RBD_MIRROR_IMAGE_ENABLED from librbd.
+	MirrorImageEnabled = MirrorImageState(C.RBD_MIRROR_IMAGE_ENABLED)
+	// MirrorImageDisabled is the representation of
+	// RBD_MIRROR_IMAGE_DISABLED from librbd.
+	MirrorImageDisabled = MirrorImageState(C.RBD_MIRROR_IMAGE_DISABLED)
+)
+
+// MirrorImageInfo represents the mirroring status information of a RBD image.
+type MirrorImageInfo struct {
+	GlobalID string
+	State    MirrorImageState
+	Primary  bool
+}
+
+// GetMirrorImageInfo fetches the mirroring status information of a RBD image.
+//
+// Implements:
+//  int rbd_mirror_image_get_info(rbd_image_t image,
+//                                rbd_mirror_image_info_t *mirror_image_info,
+//                                size_t info_size)
+func (image *Image) GetMirrorImageInfo() (*MirrorImageInfo, error) {
+	if err := image.validate(imageIsOpen); err != nil {
+		return nil, err
+	}
+
+	var cInfo C.rbd_mirror_image_info_t
+
+	ret := C.rbd_mirror_image_get_info(
+		image.image,
+		&cInfo,
+		C.sizeof_rbd_mirror_image_info_t)
+	if ret < 0 {
+		return nil, getError(ret)
+	}
+
+	mii := MirrorImageInfo{
+		GlobalID: C.GoString(cInfo.global_id),
+		State:    MirrorImageState(cInfo.state),
+		Primary:  bool(cInfo.primary),
+	}
+
+	// free C memory allocated by C.rbd_mirror_image_get_info call
+	C.rbd_mirror_image_get_info_cleanup(&cInfo)
+	return &mii, nil
+}
+
+// GetImageMirrorMode fetches the mirroring approach for an RBD image.
+//
+// Implements:
+//  int rbd_mirror_image_get_mode(rbd_image_t image, rbd_mirror_image_mode_t *mode);
+func (image *Image) GetImageMirrorMode() (ImageMirrorMode, error) {
+	var mode C.rbd_mirror_image_mode_t
+	if err := image.validate(imageIsOpen); err != nil {
+		return ImageMirrorMode(mode), err
+	}
+
+	ret := C.rbd_mirror_image_get_mode(image.image, &mode)
+	return ImageMirrorMode(mode), getError(ret)
+}