Fix some bugs when testing opensds ansible
[stor4nfv.git] / src / ceph / src / tools / rbd_mirror / image_sync / SyncPointCreateRequest.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 RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H
5 #define RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H
6
7 #include "librbd/journal/Types.h"
8 #include "librbd/journal/TypeTraits.h"
9 #include <string>
10
11 class Context;
12 namespace journal { class Journaler; }
13 namespace librbd { class ImageCtx; }
14 namespace librbd { namespace journal { struct MirrorPeerClientMeta; } }
15
16 namespace rbd {
17 namespace mirror {
18 namespace image_sync {
19
20 template <typename ImageCtxT = librbd::ImageCtx>
21 class SyncPointCreateRequest {
22 public:
23   typedef librbd::journal::TypeTraits<ImageCtxT> TypeTraits;
24   typedef typename TypeTraits::Journaler Journaler;
25   typedef librbd::journal::MirrorPeerClientMeta MirrorPeerClientMeta;
26   typedef librbd::journal::MirrorPeerSyncPoint MirrorPeerSyncPoint;
27
28   static SyncPointCreateRequest* create(ImageCtxT *remote_image_ctx,
29                                         const std::string &mirror_uuid,
30                                         Journaler *journaler,
31                                         MirrorPeerClientMeta *client_meta,
32                                         Context *on_finish) {
33     return new SyncPointCreateRequest(remote_image_ctx, mirror_uuid, journaler,
34                                       client_meta, on_finish);
35   }
36
37   SyncPointCreateRequest(ImageCtxT *remote_image_ctx,
38                          const std::string &mirror_uuid, Journaler *journaler,
39                          MirrorPeerClientMeta *client_meta, Context *on_finish);
40
41   void send();
42
43 private:
44   /**
45    * @verbatim
46    *
47    * <start>
48    *    |
49    *    v
50    * UPDATE_CLIENT < . .
51    *    |              .
52    *    v              .
53    * REFRESH_IMAGE     .
54    *    |              . (repeat on EEXIST)
55    *    v              .
56    * CREATE_SNAP . . . .
57    *    |
58    *    v
59    * REFRESH_IMAGE
60    *    |
61    *    v
62    * <finish>
63    *
64    * @endverbatim
65    */
66
67   ImageCtxT *m_remote_image_ctx;
68   std::string m_mirror_uuid;
69   Journaler *m_journaler;
70   MirrorPeerClientMeta *m_client_meta;
71   Context *m_on_finish;
72
73   MirrorPeerClientMeta m_client_meta_copy;
74
75   void send_update_client();
76   void handle_update_client(int r);
77
78   void send_refresh_image();
79   void handle_refresh_image(int r);
80
81   void send_create_snap();
82   void handle_create_snap(int r);
83
84   void send_final_refresh_image();
85   void handle_final_refresh_image(int r);
86
87   void finish(int r);
88 };
89
90 } // namespace image_sync
91 } // namespace mirror
92 } // namespace rbd
93
94 extern template class rbd::mirror::image_sync::SyncPointCreateRequest<librbd::ImageCtx>;
95
96 #endif // RBD_MIRROR_IMAGE_SYNC_SYNC_POINT_CREATE_REQUEST_H