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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_CLONE_REQUEST_H
#define CEPH_LIBRBD_IMAGE_CLONE_REQUEST_H
#include "cls/rbd/cls_rbd_types.h"
#include "common/config_fwd.h"
#include "librbd/internal.h"
#include "include/rbd/librbd.hpp"
class Context;
using librados::IoCtx;
namespace librbd {
namespace asio { struct ContextWQ; }
namespace image {
template <typename ImageCtxT = ImageCtx>
class CloneRequest {
public:
static CloneRequest *create(
ConfigProxy& config, IoCtx& parent_io_ctx,
const std::string& parent_image_id,
const std::string& parent_snap_name,
const cls::rbd::SnapshotNamespace& parent_snap_namespace,
uint64_t parent_snap_id,
IoCtx &c_ioctx, const std::string &c_name,
const std::string &c_id, ImageOptions c_options,
cls::rbd::MirrorImageMode mirror_image_mode,
const std::string &non_primary_global_image_id,
const std::string &primary_mirror_uuid,
asio::ContextWQ *op_work_queue, Context *on_finish) {
return new CloneRequest(config, parent_io_ctx, parent_image_id,
parent_snap_name, parent_snap_namespace,
parent_snap_id, c_ioctx, c_name, c_id, c_options,
mirror_image_mode, non_primary_global_image_id,
primary_mirror_uuid, op_work_queue, on_finish);
}
CloneRequest(ConfigProxy& config, IoCtx& parent_io_ctx,
const std::string& parent_image_id,
const std::string& parent_snap_name,
const cls::rbd::SnapshotNamespace& parent_snap_namespace,
uint64_t parent_snap_id,
IoCtx &c_ioctx, const std::string &c_name,
const std::string &c_id, ImageOptions c_options,
cls::rbd::MirrorImageMode mirror_image_mode,
const std::string &non_primary_global_image_id,
const std::string &primary_mirror_uuid,
asio::ContextWQ *op_work_queue, Context *on_finish);
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* OPEN PARENT
* |
* v
* VALIDATE CHILD <finish>
* | ^
* v |
* CREATE CHILD * * * * * * * * * > CLOSE PARENT
* | ^
* v |
* OPEN CHILD * * * * * * * * * * > REMOVE CHILD
* | ^
* v |
* ATTACH PARENT * * * * * * * * > CLOSE CHILD
* | ^
* v *
* ATTACH CHILD * * * * * * * * * * * *
* | *
* v *
* COPY META DATA * * * * * * * * * * ^
* | *
* v (skip if not needed) *
* GET MIRROR MODE * * * * * * * * * ^
* | *
* v (skip if not needed) *
* SET MIRROR ENABLED * * * * * * * * *
* |
* v
* CLOSE CHILD
* |
* v
* CLOSE PARENT
* |
* v
* <finish>
*
* @endverbatim
*/
ConfigProxy& m_config;
IoCtx &m_parent_io_ctx;
std::string m_parent_image_id;
std::string m_parent_snap_name;
cls::rbd::SnapshotNamespace m_parent_snap_namespace;
uint64_t m_parent_snap_id;
ImageCtxT *m_parent_image_ctx;
IoCtx &m_ioctx;
std::string m_name;
std::string m_id;
ImageOptions m_opts;
cls::rbd::ParentImageSpec m_pspec;
ImageCtxT *m_imctx;
cls::rbd::MirrorMode m_mirror_mode = cls::rbd::MIRROR_MODE_DISABLED;
cls::rbd::MirrorImageMode m_mirror_image_mode;
const std::string m_non_primary_global_image_id;
const std::string m_primary_mirror_uuid;
NoOpProgressContext m_no_op;
asio::ContextWQ *m_op_work_queue;
Context *m_on_finish;
CephContext *m_cct;
uint64_t m_clone_format = 2;
bool m_use_p_features;
uint64_t m_features;
bufferlist m_out_bl;
uint64_t m_size;
int m_r_saved = 0;
void validate_options();
void open_parent();
void handle_open_parent(int r);
void validate_parent();
void validate_child();
void handle_validate_child(int r);
void create_child();
void handle_create_child(int r);
void open_child();
void handle_open_child(int r);
void attach_parent();
void handle_attach_parent(int r);
void attach_child();
void handle_attach_child(int r);
void copy_metadata();
void handle_copy_metadata(int r);
void get_mirror_mode();
void handle_get_mirror_mode(int r);
void enable_mirror();
void handle_enable_mirror(int r);
void close_child();
void handle_close_child(int r);
void remove_child();
void handle_remove_child(int r);
void close_parent();
void handle_close_parent(int r);
void complete(int r);
};
} //namespace image
} //namespace librbd
extern template class librbd::image::CloneRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IMAGE_CLONE_REQUEST_H
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