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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_MANAGED_LOCK_BREAK_REQUEST_H
#define CEPH_LIBRBD_MANAGED_LOCK_BREAK_REQUEST_H
#include "include/int_types.h"
#include "include/buffer_fwd.h"
#include "include/rados/librados_fwd.hpp"
#include "msg/msg_types.h"
#include <list>
#include <string>
#include <boost/optional.hpp>
#include "librbd/managed_lock/Types.h"
class Context;
class ContextWQ;
class obj_watch_t;
namespace librbd {
class AsioEngine;
class ImageCtx;
template <typename> class Journal;
namespace asio { struct ContextWQ; }
namespace managed_lock {
template <typename ImageCtxT = ImageCtx>
class BreakRequest {
public:
static BreakRequest* create(librados::IoCtx& ioctx,
AsioEngine& asio_engine,
const std::string& oid, const Locker &locker,
bool exclusive, bool blocklist_locker,
uint32_t blocklist_expire_seconds,
bool force_break_lock, Context *on_finish) {
return new BreakRequest(ioctx, asio_engine, oid, locker, exclusive,
blocklist_locker, blocklist_expire_seconds,
force_break_lock, on_finish);
}
void send();
private:
/**
* @verbatim
*
* <start>
* |
* v
* GET_WATCHERS
* |
* v
* GET_LOCKER
* |
* v
* BLOCKLIST (skip if disabled)
* |
* v
* WAIT_FOR_OSD_MAP
* |
* v
* BREAK_LOCK
* |
* v
* <finish>
*
* @endvertbatim
*/
librados::IoCtx &m_ioctx;
CephContext *m_cct;
AsioEngine& m_asio_engine;
std::string m_oid;
Locker m_locker;
bool m_exclusive;
bool m_blocklist_locker;
uint32_t m_blocklist_expire_seconds;
bool m_force_break_lock;
Context *m_on_finish;
bufferlist m_out_bl;
std::list<obj_watch_t> m_watchers;
int m_watchers_ret_val;
Locker m_refreshed_locker;
BreakRequest(librados::IoCtx& ioctx, AsioEngine& asio_engine,
const std::string& oid, const Locker &locker,
bool exclusive, bool blocklist_locker,
uint32_t blocklist_expire_seconds, bool force_break_lock,
Context *on_finish);
void send_get_watchers();
void handle_get_watchers(int r);
void send_get_locker();
void handle_get_locker(int r);
void send_blocklist();
void handle_blocklist(int r);
void wait_for_osd_map();
void handle_wait_for_osd_map(int r);
void send_break_lock();
void handle_break_lock(int r);
void finish(int r);
};
} // namespace managed_lock
} // namespace librbd
extern template class librbd::managed_lock::BreakRequest<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_MANAGED_LOCK_BREAK_REQUEST_H
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