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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_H
#define RBD_MIRROR_IMAGE_SYNC_H
#include "include/int_types.h"
#include "librbd/ImageCtx.h"
#include "librbd/Types.h"
#include "common/ceph_mutex.h"
#include "tools/rbd_mirror/CancelableRequest.h"
#include "tools/rbd_mirror/image_sync/Types.h"
class Context;
namespace journal { class Journaler; }
namespace librbd { template <typename> class DeepCopyRequest; }
namespace rbd {
namespace mirror {
class ProgressContext;
template <typename> class InstanceWatcher;
template <typename> class Threads;
namespace image_sync { struct SyncPointHandler; }
template <typename ImageCtxT = librbd::ImageCtx>
class ImageSync : public CancelableRequest {
public:
static ImageSync* create(
Threads<ImageCtxT>* threads,
ImageCtxT *local_image_ctx,
ImageCtxT *remote_image_ctx,
const std::string &local_mirror_uuid,
image_sync::SyncPointHandler* sync_point_handler,
InstanceWatcher<ImageCtxT> *instance_watcher,
ProgressContext *progress_ctx,
Context *on_finish) {
return new ImageSync(threads, local_image_ctx, remote_image_ctx,
local_mirror_uuid, sync_point_handler,
instance_watcher, progress_ctx, on_finish);
}
ImageSync(
Threads<ImageCtxT>* threads,
ImageCtxT *local_image_ctx,
ImageCtxT *remote_image_ctx,
const std::string &local_mirror_uuid,
image_sync::SyncPointHandler* sync_point_handler,
InstanceWatcher<ImageCtxT> *instance_watcher,
ProgressContext *progress_ctx,
Context *on_finish);
~ImageSync() override;
void send() override;
void cancel() override;
protected:
void finish(int r) override;
private:
/**
* @verbatim
*
* <start>
* |
* v
* NOTIFY_SYNC_REQUEST
* |
* v
* PRUNE_CATCH_UP_SYNC_POINT
* |
* v
* CREATE_SYNC_POINT (skip if already exists and
* | not disconnected)
* v
* COPY_IMAGE . . . . . . . . . . . . . .
* | .
* v .
* FLUSH_SYNC_POINT .
* | . (image sync canceled)
* v .
* PRUNE_SYNC_POINTS .
* | .
* v .
* <finish> < . . . . . . . . . . . . . .
*
* @endverbatim
*/
class ImageCopyProgressHandler;
Threads<ImageCtxT>* m_threads;
ImageCtxT *m_local_image_ctx;
ImageCtxT *m_remote_image_ctx;
std::string m_local_mirror_uuid;
image_sync::SyncPointHandler* m_sync_point_handler;
InstanceWatcher<ImageCtxT> *m_instance_watcher;
ProgressContext *m_progress_ctx;
ceph::mutex m_lock;
bool m_canceled = false;
librbd::DeepCopyRequest<ImageCtxT> *m_image_copy_request = nullptr;
ImageCopyProgressHandler *m_image_copy_prog_handler = nullptr;
bool m_updating_sync_point = false;
Context *m_update_sync_ctx = nullptr;
double m_update_sync_point_interval;
uint64_t m_image_copy_object_no = 0;
uint64_t m_image_copy_object_count = 0;
librbd::SnapSeqs m_snap_seqs_copy;
image_sync::SyncPoints m_sync_points_copy;
int m_ret_val = 0;
void send_notify_sync_request();
void handle_notify_sync_request(int r);
void send_prune_catch_up_sync_point();
void handle_prune_catch_up_sync_point(int r);
void send_create_sync_point();
void handle_create_sync_point(int r);
void send_update_max_object_count();
void handle_update_max_object_count(int r);
void send_copy_image();
void handle_copy_image(int r);
void handle_copy_image_update_progress(uint64_t object_no,
uint64_t object_count);
void send_update_sync_point();
void handle_update_sync_point(int r);
void send_flush_sync_point();
void handle_flush_sync_point(int r);
void send_prune_sync_points();
void handle_prune_sync_points(int r);
void update_progress(const std::string &description);
};
} // namespace mirror
} // namespace rbd
extern template class rbd::mirror::ImageSync<librbd::ImageCtx>;
#endif // RBD_MIRROR_IMAGE_SYNC_H
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