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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_REPLAYER_BOOTSTRAP_REQUEST_H
#define RBD_MIRROR_IMAGE_REPLAYER_BOOTSTRAP_REQUEST_H
#include "include/int_types.h"
#include "include/rados/librados.hpp"
#include "common/ceph_mutex.h"
#include "common/Timer.h"
#include "cls/rbd/cls_rbd_types.h"
#include "librbd/mirror/Types.h"
#include "tools/rbd_mirror/CancelableRequest.h"
#include "tools/rbd_mirror/Types.h"
#include <string>
class Context;
namespace journal { class CacheManagerHandler; }
namespace librbd { class ImageCtx; }
namespace rbd {
namespace mirror {
class ProgressContext;
template <typename> class ImageSync;
template <typename> class InstanceWatcher;
struct PoolMetaCache;
template <typename> struct Threads;
namespace image_replayer {
template <typename> class StateBuilder;
template <typename ImageCtxT = librbd::ImageCtx>
class BootstrapRequest : public CancelableRequest {
public:
typedef rbd::mirror::ProgressContext ProgressContext;
static BootstrapRequest* create(
Threads<ImageCtxT>* threads,
librados::IoCtx& local_io_ctx,
librados::IoCtx& remote_io_ctx,
InstanceWatcher<ImageCtxT>* instance_watcher,
const std::string& global_image_id,
const std::string& local_mirror_uuid,
const RemotePoolMeta& remote_pool_meta,
::journal::CacheManagerHandler* cache_manager_handler,
PoolMetaCache* pool_meta_cache,
ProgressContext* progress_ctx,
StateBuilder<ImageCtxT>** state_builder,
bool* do_resync,
Context* on_finish) {
return new BootstrapRequest(
threads, local_io_ctx, remote_io_ctx, instance_watcher, global_image_id,
local_mirror_uuid, remote_pool_meta, cache_manager_handler,
pool_meta_cache, progress_ctx, state_builder, do_resync, on_finish);
}
BootstrapRequest(
Threads<ImageCtxT>* threads,
librados::IoCtx& local_io_ctx,
librados::IoCtx& remote_io_ctx,
InstanceWatcher<ImageCtxT>* instance_watcher,
const std::string& global_image_id,
const std::string& local_mirror_uuid,
const RemotePoolMeta& remote_pool_meta,
::journal::CacheManagerHandler* cache_manager_handler,
PoolMetaCache* pool_meta_cache,
ProgressContext* progress_ctx,
StateBuilder<ImageCtxT>** state_builder,
bool* do_resync,
Context* on_finish);
bool is_syncing() const;
void send() override;
void cancel() override;
std::string get_local_image_name() const;
private:
/**
* @verbatim
*
* <start>
* |
* v (error)
* PREPARE_LOCAL_IMAGE * * * * * * * * * * * * * * * * * *
* | *
* v (error) *
* PREPARE_REMOTE_IMAGE * * * * * * * * * * * * * * * * * *
* | *
* v (error) *
* OPEN_REMOTE_IMAGE * * * * * * * * * * * * * * * * * * *
* | *
* | *
* \----> CREATE_LOCAL_IMAGE * * * * * * * * * * * * *
* | | ^ * *
* | | . * *
* | v . (image DNE) * *
* \----> OPEN_LOCAL_IMAGE * * * * * * * * * * * * * *
* | * *
* | * *
* v * *
* PREPARE_REPLAY * * * * * * * * * * * * * * *
* | * *
* | * *
* v (skip if not needed) * *
* IMAGE_SYNC * * * * * * * * * * * * * * * * *
* | * *
* | * *
* /---------/ * *
* | * *
* v * *
* CLOSE_REMOTE_IMAGE < * * * * * * * * * * * * * * * * *
* | *
* v *
* <finish> < * * * * * * * * * * * * * * * * * * * * * * *
*
* @endverbatim
*/
Threads<ImageCtxT>* m_threads;
librados::IoCtx &m_local_io_ctx;
librados::IoCtx &m_remote_io_ctx;
InstanceWatcher<ImageCtxT> *m_instance_watcher;
std::string m_global_image_id;
std::string m_local_mirror_uuid;
RemotePoolMeta m_remote_pool_meta;
::journal::CacheManagerHandler *m_cache_manager_handler;
PoolMetaCache* m_pool_meta_cache;
ProgressContext *m_progress_ctx;
StateBuilder<ImageCtxT>** m_state_builder;
bool *m_do_resync;
mutable ceph::mutex m_lock;
bool m_canceled = false;
int m_ret_val = 0;
std::string m_local_image_name;
std::string m_prepare_local_image_name;
bool m_syncing = false;
ImageSync<ImageCtxT> *m_image_sync = nullptr;
void prepare_local_image();
void handle_prepare_local_image(int r);
void prepare_remote_image();
void handle_prepare_remote_image(int r);
void open_remote_image();
void handle_open_remote_image(int r);
void open_local_image();
void handle_open_local_image(int r);
void create_local_image();
void handle_create_local_image(int r);
void prepare_replay();
void handle_prepare_replay(int r);
void image_sync();
void handle_image_sync(int r);
void close_remote_image();
void handle_close_remote_image(int r);
void update_progress(const std::string &description);
};
} // namespace image_replayer
} // namespace mirror
} // namespace rbd
extern template class rbd::mirror::image_replayer::BootstrapRequest<librbd::ImageCtx>;
#endif // RBD_MIRROR_IMAGE_REPLAYER_BOOTSTRAP_REQUEST_H
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