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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_GROUP_LIST_SNAPSHOTS_REQUEST_H
#define CEPH_LIBRBD_GROUP_LIST_SNAPSHOTS_REQUEST_H
#include "include/int_types.h"
#include "include/types.h"
#include "include/rados/librados.hpp"
#include "cls/rbd/cls_rbd_types.h"
#include <string>
#include <vector>
class Context;
namespace librbd {
struct ImageCtx;
namespace group {
template <typename ImageCtxT = librbd::ImageCtx>
class ListSnapshotsRequest {
public:
static ListSnapshotsRequest *create(
librados::IoCtx &group_io_ctx, const std::string &group_id,
bool try_to_sort, bool fail_if_not_sorted,
std::vector<cls::rbd::GroupSnapshot> *snaps, Context *on_finish) {
return new ListSnapshotsRequest(group_io_ctx, group_id, try_to_sort,
fail_if_not_sorted, snaps, on_finish);
}
ListSnapshotsRequest(librados::IoCtx &group_io_ctx,
const std::string &group_id,
bool try_to_sort, bool fail_if_not_sorted,
std::vector<cls::rbd::GroupSnapshot> *snaps,
Context *on_finish);
void send();
private:
/**
* @verbatim
*
* <start> /--------\
* | | | (if required. repeat if more
* v v | entries)
* LIST_SNAP_ORDERS --/
* | /--------\
* | | | (repeat if more
* v v | snapshots)
* LIST_SNAPS --------/
* |
* v
* SORT_SNAPS (if required)
* |
* v
* <finish>
*
* @endverbatim
*/
librados::IoCtx &m_group_io_ctx;
std::string m_group_id;
bool m_try_to_sort;
//Fail if m_try_to_sort is true and sorting fails. Ignored if m_try_to_sort is false.
bool m_fail_if_not_sorted;
std::vector<cls::rbd::GroupSnapshot> *m_snaps;
std::map<std::string, uint64_t> m_snap_orders;
Context *m_on_finish;
cls::rbd::GroupSnapshot m_start_after;
std::string m_start_after_order;
bufferlist m_out_bl;
void list_snaps();
void handle_list_snaps(int r);
void list_snap_orders();
void handle_list_snap_orders(int r);
void sort_snaps();
void finish(int r);
};
} // namespace group
} // namespace librbd
extern template class librbd::group::ListSnapshotsRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_GROUP_LIST_SNAPSHOTS_REQUEST_H
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