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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_OPERATION_MIGRATE_REQUEST_H
#define CEPH_LIBRBD_OPERATION_MIGRATE_REQUEST_H
#include "librbd/operation/Request.h"
#include "librbd/Types.h"
namespace librbd {
class ImageCtx;
class ProgressContext;
namespace operation {
template <typename ImageCtxT = ImageCtx>
class MigrateRequest : public Request<ImageCtxT>
{
public:
MigrateRequest(ImageCtxT &image_ctx, Context *on_finish,
ProgressContext &prog_ctx)
: Request<ImageCtxT>(image_ctx, on_finish), m_prog_ctx(prog_ctx) {
}
protected:
void send_op() override;
bool should_complete(int r) override;
bool can_affect_io() const override {
return true;
}
journal::Event create_event(uint64_t op_tid) const override {
ceph_abort();
return journal::UnknownEvent();
}
private:
/**
* Migrate goes through the following state machine to copy objects
* from the parent (migrating source) image:
*
* @verbatim
*
* <start>
* |
* v
* MIGRATE_OBJECTS
* |
* v
* <finish>
*
* @endverbatim
*
*/
ProgressContext &m_prog_ctx;
void migrate_objects();
void handle_migrate_objects(int r);
uint64_t get_num_overlap_objects();
};
} // namespace operation
} // namespace librbd
extern template class librbd::operation::MigrateRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_OPERATION_MIGRATE_REQUEST_H
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