ceph/src/librbd/managed_lock/ReleaseRequest.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_RELEASE_REQUEST_H
   5 #define CEPH_LIBRBD_MANAGED_LOCK_RELEASE_REQUEST_H
   6
   7 #include "include/rados/librados.hpp"
   8 #include "librbd/watcher/Types.h"
   9 #include <string>
  10
  11 class Context;
  12 class ContextWQ;
  13
  14 namespace librbd {
  15
  16 class Watcher;
  17
  18 namespace managed_lock {
  19
  20 template <typename ImageCtxT>
  21 class ReleaseRequest {
  22 private:
  23   typedef watcher::Traits<ImageCtxT> TypeTraits;
  24   typedef typename TypeTraits::Watcher Watcher;
  25
  26 public:
  27   static ReleaseRequest* create(librados::IoCtx& ioctx, Watcher *watcher,
  28                                 ContextWQ *work_queue,
  29                                 const std::string& oid,
  30                                 const std::string& cookie,
  31                                 Context *on_finish);
  32
  33   ~ReleaseRequest();
  34   void send();
  35
  36 private:
  37   /**
  38    * @verbatim
  39    *
  40    * <start>
  41    *    |
  42    *    v
  43    * UNLOCK
  44    *    |
  45    *    v
  46    * <finish>
  47    *
  48    * @endverbatim
  49    */
  50
  51   ReleaseRequest(librados::IoCtx& ioctx, Watcher *watcher,
  52                  ContextWQ *work_queue, const std::string& oid,
  53                  const std::string& cookie, Context *on_finish);
  54
  55   librados::IoCtx& m_ioctx;
  56   Watcher *m_watcher;
  57   std::string m_oid;
  58   std::string m_cookie;
  59   Context *m_on_finish;
  60
  61   void send_unlock();
  62   void handle_unlock(int r);
  63
  64   void finish();
  65
  66 };
  67
  68 } // namespace managed_lock
  69 } // namespace librbd
  70
  71 #endif // CEPH_LIBRBD_MANAGED_LOCK_RELEASE_REQUEST_H