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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H
#define RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H
#include "librbd/journal/Types.h"
#include "librbd/journal/TypeTraits.h"
#include <string>
class Context;
namespace journal { class Journaler; }
namespace librbd { class ImageCtx; }
namespace librbd { namespace journal { struct MirrorPeerClientMeta; } }
namespace rbd {
namespace mirror {
namespace image_sync {
template <typename ImageCtxT = librbd::ImageCtx>
class SyncPointCreateRequest {
public:
typedef librbd::journal::TypeTraits<ImageCtxT> TypeTraits;
typedef typename TypeTraits::Journaler Journaler;
typedef librbd::journal::MirrorPeerClientMeta MirrorPeerClientMeta;
typedef librbd::journal::MirrorPeerSyncPoint MirrorPeerSyncPoint;
static SyncPointCreateRequest* create(ImageCtxT *remote_image_ctx,
const std::string &mirror_uuid,
Journaler *journaler,
MirrorPeerClientMeta *client_meta,
Context *on_finish) {
return new SyncPointCreateRequest(remote_image_ctx, mirror_uuid, journaler,
client_meta, on_finish);
}
SyncPointCreateRequest(ImageCtxT *remote_image_ctx,
const std::string &mirror_uuid, Journaler *journaler,
MirrorPeerClientMeta *client_meta, Context *on_finish);
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* UPDATE_CLIENT < . .
* | .
* v .
* REFRESH_IMAGE .
* | . (repeat on EEXIST)
* v .
* CREATE_SNAP . . . .
* |
* v
* REFRESH_IMAGE
* |
* v
* <finish>
*
* @endverbatim
*/
ImageCtxT *m_remote_image_ctx;
std::string m_mirror_uuid;
Journaler *m_journaler;
MirrorPeerClientMeta *m_client_meta;
Context *m_on_finish;
MirrorPeerClientMeta m_client_meta_copy;
void send_update_client();
void handle_update_client(int r);
void send_refresh_image();
void handle_refresh_image(int r);
void send_create_snap();
void handle_create_snap(int r);
void send_final_refresh_image();
void handle_final_refresh_image(int r);
void finish(int r);
};
} // namespace image_sync
} // namespace mirror
} // namespace rbd
extern template class rbd::mirror::image_sync::SyncPointCreateRequest<librbd::ImageCtx>;
#endif // RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H
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