ceph/src/librbd/managed_lock/ReacquireRequest.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_LIBRBD_MANAGED_LOCK_REACQUIRE_REQUEST_H
   5 #define CEPH_LIBRBD_MANAGED_LOCK_REACQUIRE_REQUEST_H
   6
   7 #include "include/rados/librados.hpp"
   8 #include "include/int_types.h"
   9 #include <string>
  10
  11 class Context;
  12
  13 namespace librbd {
  14
  15 class Watcher;
  16
  17 namespace managed_lock {
  18
  19 template <typename ImageCtxT>
  20 class ReacquireRequest {
  21 public:
  22
  23   static ReacquireRequest *create(librados::IoCtx& ioctx,
  24                                   const std::string& oid,
  25                                   const std::string& old_cookie,
  26                                   const std::string &new_cookie,
  27                                   bool exclusive,
  28                                   Context *on_finish) {
  29     return new ReacquireRequest(ioctx, oid, old_cookie, new_cookie, exclusive,
  30                                 on_finish);
  31   }
  32
  33   ReacquireRequest(librados::IoCtx& ioctx, const std::string& oid,
  34                    const std::string& old_cookie,
  35                    const std::string &new_cookie, bool exclusive,
  36                    Context *on_finish);
  37
  38   void send();
  39
  40 private:
  41   /**
  42    * @verbatim
  43    *
  44    * <start>
  45    *    |
  46    *    v
  47    * SET_COOKIE
  48    *    |
  49    *    v
  50    * <finish>
  51    *
  52    * @endverbatim
  53    */
  54   librados::IoCtx& m_ioctx;
  55   std::string m_oid;
  56   std::string m_old_cookie;
  57   std::string m_new_cookie;
  58   bool m_exclusive;
  59   Context *m_on_finish;
  60
  61   void set_cookie();
  62   void handle_set_cookie(int r);
  63
  64 };
  65
  66 } // namespace managed_lock
  67 } // namespace librbd
  68
  69 #endif // CEPH_LIBRBD_MANAGED_LOCK_REACQUIRE_REQUEST_H