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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_DETACH_CHILD_REQUEST_H
#define CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H
#include "include/int_types.h"
#include "include/buffer.h"
#include "include/rados/librados.hpp"
#include "librbd/Types.h"
#include "librbd/internal.h"
class Context;
namespace librbd {
class ImageCtx;
namespace image {
template <typename ImageCtxT = ImageCtx>
class DetachChildRequest {
public:
static DetachChildRequest* create(ImageCtxT& image_ctx, Context* on_finish) {
return new DetachChildRequest(image_ctx, on_finish);
}
DetachChildRequest(ImageCtxT& image_ctx, Context* on_finish)
: m_image_ctx(image_ctx), m_on_finish(on_finish) {
}
~DetachChildRequest();
void send();
private:
/**
* @verbatim
*
* <start>
* |
* (v1) | (v2)
* /--------------/ \--------------\
* | |
* v v
* REMOVE_CHILD CHILD_DETACH
* | |
* | v
* | GET_SNAPSHOT
* | (snapshot in-use) . |
* |/. . . . . . . . . . . . . . . |
* | v
* | OPEN_PARENT
* | |
* | v (has more children)
* | REMOVE_SNAPSHOT ---------------\
* | | |
* | v (noent) |
* | (auto-delete when GET_PARENT_TRASH_ENTRY . . . .\|
* | last child detached) | |
* | v v
* | REMOVE_PARENT_FROM_TRASH CLOSE_PARENT
* | | |
* |/------------------------------/--------------------------/
* |
* v
* <finish>
*
* @endverbatim
*/
ImageCtxT& m_image_ctx;
Context* m_on_finish;
librados::IoCtx m_parent_io_ctx;
cls::rbd::ParentImageSpec m_parent_spec;
std::string m_parent_header_name;
cls::rbd::SnapshotNamespace m_parent_snap_namespace;
std::string m_parent_snap_name;
ImageCtxT* m_parent_image_ctx = nullptr;
ceph::bufferlist m_out_bl;
NoOpProgressContext m_no_op;
void clone_v2_child_detach();
void handle_clone_v2_child_detach(int r);
void clone_v2_get_snapshot();
void handle_clone_v2_get_snapshot(int r);
void clone_v2_open_parent();
void handle_clone_v2_open_parent(int r);
void clone_v2_remove_snapshot();
void handle_clone_v2_remove_snapshot(int r);
void clone_v2_get_parent_trash_entry();
void handle_clone_v2_get_parent_trash_entry(int r);
void clone_v2_remove_parent_from_trash();
void handle_clone_v2_remove_parent_from_trash(int r);
void clone_v2_close_parent();
void handle_clone_v2_close_parent(int r);
void clone_v1_remove_child();
void handle_clone_v1_remove_child(int r);
void finish(int r);
};
} // namespace image
} // namespace librbd
extern template class librbd::image::DetachChildRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IMAGE_DETACH_CHILD_REQUEST_H
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