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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_OBJECT_MAP_UPDATE_REQUEST_H
#define CEPH_LIBRBD_OBJECT_MAP_UPDATE_REQUEST_H
#include "include/int_types.h"
#include "librbd/object_map/Request.h"
#include "common/bit_vector.hpp"
#include "common/zipkin_trace.h"
#include "librbd/Utils.h"
#include <boost/optional.hpp>
class Context;
namespace librbd {
class ImageCtx;
namespace object_map {
template <typename ImageCtxT = librbd::ImageCtx>
class UpdateRequest : public Request {
public:
static UpdateRequest *create(ImageCtx &image_ctx,
ceph::shared_mutex* object_map_lock,
ceph::BitVector<2> *object_map,
uint64_t snap_id, uint64_t start_object_no,
uint64_t end_object_no, uint8_t new_state,
const boost::optional<uint8_t> ¤t_state,
const ZTracer::Trace &parent_trace,
bool ignore_enoent, Context *on_finish) {
return new UpdateRequest(image_ctx, object_map_lock, object_map, snap_id,
start_object_no, end_object_no, new_state,
current_state, parent_trace, ignore_enoent,
on_finish);
}
UpdateRequest(ImageCtx &image_ctx, ceph::shared_mutex* object_map_lock,
ceph::BitVector<2> *object_map, uint64_t snap_id,
uint64_t start_object_no, uint64_t end_object_no,
uint8_t new_state,
const boost::optional<uint8_t> ¤t_state,
const ZTracer::Trace &parent_trace, bool ignore_enoent,
Context *on_finish)
: Request(image_ctx, snap_id, on_finish),
m_object_map_lock(object_map_lock), m_object_map(*object_map),
m_start_object_no(start_object_no), m_end_object_no(end_object_no),
m_update_start_object_no(start_object_no), m_new_state(new_state),
m_current_state(current_state),
m_trace(util::create_trace(image_ctx, "update object map", parent_trace)),
m_ignore_enoent(ignore_enoent)
{
m_trace.event("start");
}
virtual ~UpdateRequest() {
m_trace.event("finish");
}
void send() override;
protected:
void finish_request() override;
private:
/**
* @verbatim
*
* <start>
* |
* |/------------------\
* v | (repeat in batches)
* UPDATE_OBJECT_MAP -----/
* |
* v
* <finish>
*
* @endverbatim
*/
ceph::shared_mutex* m_object_map_lock;
ceph::BitVector<2> &m_object_map;
uint64_t m_start_object_no;
uint64_t m_end_object_no;
uint64_t m_update_start_object_no;
uint64_t m_update_end_object_no = 0;
uint8_t m_new_state;
boost::optional<uint8_t> m_current_state;
ZTracer::Trace m_trace;
bool m_ignore_enoent;
int m_ret_val = 0;
void update_object_map();
void handle_update_object_map(int r);
void update_in_memory_object_map();
};
} // namespace object_map
} // namespace librbd
extern template class librbd::object_map::UpdateRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_OBJECT_MAP_UPDATE_REQUEST_H
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