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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_RBD_MIRROR_IMAGE_REPLAYER_STATE_BUILDER_H
#define CEPH_RBD_MIRROR_IMAGE_REPLAYER_STATE_BUILDER_H
#include "include/rados/librados_fwd.hpp"
#include "cls/rbd/cls_rbd_types.h"
#include "librbd/mirror/Types.h"
struct Context;
namespace librbd { struct ImageCtx; }
namespace rbd {
namespace mirror {
struct BaseRequest;
template <typename> class InstanceWatcher;
struct PoolMetaCache;
struct ProgressContext;
template <typename> class Threads;
namespace image_sync { struct SyncPointHandler; }
namespace image_replayer {
struct Replayer;
struct ReplayerListener;
template <typename ImageCtxT>
class StateBuilder {
public:
StateBuilder(const StateBuilder&) = delete;
StateBuilder& operator=(const StateBuilder&) = delete;
virtual ~StateBuilder();
virtual void destroy() {
delete this;
}
virtual void close(Context* on_finish) = 0;
virtual bool is_disconnected() const = 0;
bool is_local_primary() const;
bool is_remote_primary() const;
bool is_linked() const;
virtual cls::rbd::MirrorImageMode get_mirror_image_mode() const = 0;
virtual image_sync::SyncPointHandler* create_sync_point_handler() = 0;
void destroy_sync_point_handler();
virtual bool replay_requires_remote_image() const = 0;
void close_remote_image(Context* on_finish);
virtual BaseRequest* create_local_image_request(
Threads<ImageCtxT>* threads,
librados::IoCtx& local_io_ctx,
const std::string& global_image_id,
PoolMetaCache* pool_meta_cache,
ProgressContext* progress_ctx,
Context* on_finish) = 0;
virtual BaseRequest* create_prepare_replay_request(
const std::string& local_mirror_uuid,
ProgressContext* progress_ctx,
bool* resync_requested,
bool* syncing,
Context* on_finish) = 0;
virtual Replayer* create_replayer(
Threads<ImageCtxT>* threads,
InstanceWatcher<ImageCtxT>* instance_watcher,
const std::string& local_mirror_uuid,
PoolMetaCache* pool_meta_cache,
ReplayerListener* replayer_listener) = 0;
std::string global_image_id;
std::string local_image_id;
librbd::mirror::PromotionState local_promotion_state =
librbd::mirror::PROMOTION_STATE_UNKNOWN;
ImageCtxT* local_image_ctx = nullptr;
std::string remote_mirror_uuid;
std::string remote_image_id;
librbd::mirror::PromotionState remote_promotion_state =
librbd::mirror::PROMOTION_STATE_UNKNOWN;
ImageCtxT* remote_image_ctx = nullptr;
protected:
image_sync::SyncPointHandler* m_sync_point_handler = nullptr;
StateBuilder(const std::string& global_image_id);
void close_local_image(Context* on_finish);
private:
virtual bool is_linked_impl() const = 0;
void handle_close_local_image(int r, Context* on_finish);
void handle_close_remote_image(int r, Context* on_finish);
};
} // namespace image_replayer
} // namespace mirror
} // namespace rbd
extern template class rbd::mirror::image_replayer::StateBuilder<librbd::ImageCtx>;
#endif // CEPH_RBD_MIRROR_IMAGE_REPLAYER_STATE_BUILDER_H
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