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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_MIGRATION_OPEN_SOURCE_IMAGE_REQUEST_H
#define CEPH_LIBRBD_MIGRATION_OPEN_SOURCE_IMAGE_REQUEST_H
#include "include/rados/librados_fwd.hpp"
#include "librbd/Types.h"
#include <map>
#include <memory>
struct Context;
namespace librbd {
struct ImageCtx;
namespace migration {
struct FormatInterface;
template <typename ImageCtxT>
class OpenSourceImageRequest {
public:
static OpenSourceImageRequest* create(librados::IoCtx& io_ctx,
ImageCtxT* destination_image_ctx,
uint64_t src_snap_id,
const MigrationInfo &migration_info,
ImageCtxT** source_image_ctx,
Context* on_finish) {
return new OpenSourceImageRequest(io_ctx, destination_image_ctx,
src_snap_id, migration_info,
source_image_ctx, on_finish);
}
OpenSourceImageRequest(librados::IoCtx& io_ctx,
ImageCtxT* destination_image_ctx,
uint64_t src_snap_id,
const MigrationInfo &migration_info,
ImageCtxT** source_image_ctx,
Context* on_finish);
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* OPEN_SOURCE
* |
* v
* GET_IMAGE_SIZE * * * * * * *
* | *
* v v
* GET_SNAPSHOTS * * * * > CLOSE_IMAGE
* | |
* v |
* <finish> <------------------/
*
* @endverbatim
*/
typedef std::map<uint64_t, SnapInfo> SnapInfos;
CephContext* m_cct;
librados::IoCtx& m_io_ctx;
ImageCtxT* m_dst_image_ctx;
uint64_t m_src_snap_id;
MigrationInfo m_migration_info;
ImageCtxT** m_src_image_ctx;
Context* m_on_finish;
std::unique_ptr<FormatInterface> m_format;
uint64_t m_image_size = 0;
SnapInfos m_snap_infos;
void open_source();
void handle_open_source(int r);
void get_image_size();
void handle_get_image_size(int r);
void get_snapshots();
void handle_get_snapshots(int r);
void close_image(int r);
void register_image_dispatch();
void finish(int r);
};
} // namespace migration
} // namespace librbd
extern template class librbd::migration::OpenSourceImageRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_MIGRATION_OPEN_SOURCE_IMAGE_REQUEST_H
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