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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_MIRROR_GET_INFO_REQUEST_H
#define CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
#include "common/snap_types.h"
#include "include/buffer.h"
#include "include/common_fwd.h"
#include "include/rados/librados.hpp"
#include "librbd/Types.h"
#include "librbd/mirror/Types.h"
#include <string>
struct Context;
namespace cls { namespace rbd { struct MirrorImage; } }
namespace librbd {
struct ImageCtx;
namespace asio { struct ContextWQ; }
namespace mirror {
template <typename ImageCtxT = librbd::ImageCtx>
class GetInfoRequest {
public:
static GetInfoRequest *create(librados::IoCtx &io_ctx,
asio::ContextWQ *op_work_queue,
const std::string &image_id,
cls::rbd::MirrorImage *mirror_image,
PromotionState *promotion_state,
std::string* primary_mirror_uuid,
Context *on_finish) {
return new GetInfoRequest(io_ctx, op_work_queue, image_id, mirror_image,
promotion_state, primary_mirror_uuid, on_finish);
}
static GetInfoRequest *create(ImageCtxT &image_ctx,
cls::rbd::MirrorImage *mirror_image,
PromotionState *promotion_state,
std::string* primary_mirror_uuid,
Context *on_finish) {
return new GetInfoRequest(image_ctx, mirror_image, promotion_state,
primary_mirror_uuid, on_finish);
}
GetInfoRequest(librados::IoCtx& io_ctx, asio::ContextWQ *op_work_queue,
const std::string &image_id,
cls::rbd::MirrorImage *mirror_image,
PromotionState *promotion_state,
std::string* primary_mirror_uuid, Context *on_finish);
GetInfoRequest(ImageCtxT &image_ctx, cls::rbd::MirrorImage *mirror_image,
PromotionState *promotion_state,
std::string* primary_mirror_uuid, Context *on_finish);
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* GET_MIRROR_IMAGE
* |
* (journal /--------/ \--------\ (snapshot
* mode) | | mode)
* v v
* GET_JOURNAL_TAG_OWNER GET_SNAPCONTEXT (skip if
* | | cached)
* | v
* | GET_SNAPSHOTS (skip if
* | | cached)
* \--------\ /--------/
* |
* v
* <finish>
*
* @endverbatim
*/
ImageCtxT *m_image_ctx = nullptr;
librados::IoCtx &m_io_ctx;
asio::ContextWQ *m_op_work_queue;
std::string m_image_id;
cls::rbd::MirrorImage *m_mirror_image;
PromotionState *m_promotion_state;
std::string* m_primary_mirror_uuid;
Context *m_on_finish;
CephContext *m_cct;
bufferlist m_out_bl;
std::string m_mirror_uuid;
::SnapContext m_snapc;
void get_mirror_image();
void handle_get_mirror_image(int r);
void get_journal_tag_owner();
void handle_get_journal_tag_owner(int r);
void get_snapcontext();
void handle_get_snapcontext(int r);
void get_snapshots();
void handle_get_snapshots(int r);
void finish(int r);
void calc_promotion_state(
const std::map<librados::snap_t, SnapInfo> &snap_info);
};
} // namespace mirror
} // namespace librbd
extern template class librbd::mirror::GetInfoRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
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