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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_IMAGE_ATTACH_CHILD_REQUEST_H
#define CEPH_LIBRBD_IMAGE_ATTACH_CHILD_REQUEST_H
#include "include/common_fwd.h"
#include "include/int_types.h"
#include "include/rados/librados.hpp"
class Context;
namespace librbd {
class ImageCtx;
namespace image {
template <typename ImageCtxT = ImageCtx>
class AttachChildRequest {
public:
static AttachChildRequest* create(ImageCtxT *image_ctx,
ImageCtxT *parent_image_ctx,
const librados::snap_t &parent_snap_id,
ImageCtxT *old_parent_image_ctx,
const librados::snap_t &old_parent_snap_id,
uint32_t clone_format,
Context* on_finish) {
return new AttachChildRequest(image_ctx, parent_image_ctx, parent_snap_id,
old_parent_image_ctx, old_parent_snap_id,
clone_format, on_finish);
}
AttachChildRequest(ImageCtxT *image_ctx,
ImageCtxT *parent_image_ctx,
const librados::snap_t &parent_snap_id,
ImageCtxT *old_parent_image_ctx,
const librados::snap_t &old_parent_snap_id,
uint32_t clone_format,
Context* on_finish);
void send();
private:
/**
* @verbatim
*
* <start>
* (clone v1) | (clone v2)
* /----------------/ \---------------\
* | |
* v v
* V1 ADD CHILD V2 SET CLONE
* | |
* v v
* V1 VALIDATE PROTECTED V2 ATTACH CHILD
* | |
* | v
* V1 REMOVE CHILD FROM OLD PARENT V2 DETACH CHILD FROM OLD PARENT
* | |
* \----------------\ /---------------/
* |
* v
* <finish>
*
* @endverbatim
*/
ImageCtxT *m_image_ctx;
ImageCtxT *m_parent_image_ctx;
librados::snap_t m_parent_snap_id;
ImageCtxT *m_old_parent_image_ctx;
librados::snap_t m_old_parent_snap_id;
uint32_t m_clone_format;
Context* m_on_finish;
CephContext *m_cct;
void v1_add_child();
void handle_v1_add_child(int r);
void v1_refresh();
void handle_v1_refresh(int r);
void v1_remove_child_from_old_parent();
void handle_v1_remove_child_from_old_parent(int r);
void v2_set_op_feature();
void handle_v2_set_op_feature(int r);
void v2_child_attach();
void handle_v2_child_attach(int r);
void v2_child_detach_from_old_parent();
void handle_v2_child_detach_from_old_parent(int r);
void finish(int r);
};
} // namespace image
} // namespace librbd
extern template class librbd::image::AttachChildRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IMAGE_ATTACH_CHILD_REQUEST_H
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