ceph/src/librbd/mirror/GetUuidRequest.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_MIRROR_GET_UUID_REQUEST_H
   5 #define CEPH_LIBRBD_MIRROR_GET_UUID_REQUEST_H
   6
   7 #include "include/buffer.h"
   8 #include "include/rados/librados.hpp"
   9 #include "cls/rbd/cls_rbd_types.h"
  10
  11 #include <string>
  12 #include <set>
  13
  14 struct Context;
  15
  16 namespace librbd {
  17
  18 struct ImageCtx;
  19
  20 namespace mirror {
  21
  22 template <typename ImageCtxT = librbd::ImageCtx>
  23 class GetUuidRequest {
  24 public:
  25   static GetUuidRequest *create(librados::IoCtx& io_ctx,
  26                                 std::string* mirror_uuid, Context* on_finish) {
  27     return new GetUuidRequest(io_ctx, mirror_uuid, on_finish);
  28   }
  29
  30   GetUuidRequest(librados::IoCtx& io_ctx, std::string* mirror_uuid,
  31                  Context* on_finish);
  32
  33   void send();
  34
  35 private:
  36   /**
  37    * @verbatim
  38    *
  39    * <start>
  40    *    |
  41    *    v
  42    * GET_MIRROR_UUID
  43    *    |
  44    *    v
  45    * <finish>
  46    *
  47    * @endverbatim
  48    */
  49
  50   librados::IoCtx m_io_ctx;
  51   std::string* m_mirror_uuid;
  52   Context* m_on_finish;
  53
  54   CephContext* m_cct;
  55
  56   bufferlist m_out_bl;
  57
  58   void get_mirror_uuid();
  59   void handle_get_mirror_uuid(int r);
  60
  61   void finish(int r);
  62 };
  63
  64 } // namespace mirror
  65 } // namespace librbd
  66
  67 extern template class librbd::mirror::GetUuidRequest<librbd::ImageCtx>;
  68
  69 #endif // CEPH_LIBRBD_MIRROR_GET_UUID_REQUEST_H