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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "tools/rbd_mirror/pool_watcher/RefreshImagesRequest.h" | |
31f18b77 | 5 | #include "common/debug.h" |
7c673cae FG |
6 | #include "common/errno.h" |
7 | #include "cls/rbd/cls_rbd_client.h" | |
8 | #include "librbd/Utils.h" | |
9 | #include <map> | |
10 | ||
11 | #define dout_context g_ceph_context | |
12 | #define dout_subsys ceph_subsys_rbd_mirror | |
13 | #undef dout_prefix | |
14 | #define dout_prefix *_dout << "rbd::mirror::pool_watcher::RefreshImagesRequest " \ | |
15 | << this << " " << __func__ << ": " | |
16 | ||
17 | namespace rbd { | |
18 | namespace mirror { | |
19 | namespace pool_watcher { | |
20 | ||
21 | static const uint32_t MAX_RETURN = 1024; | |
22 | ||
23 | using librbd::util::create_rados_callback; | |
24 | ||
25 | template <typename I> | |
26 | void RefreshImagesRequest<I>::send() { | |
27 | m_image_ids->clear(); | |
28 | mirror_image_list(); | |
29 | } | |
30 | ||
31 | template <typename I> | |
32 | void RefreshImagesRequest<I>::mirror_image_list() { | |
33 | dout(10) << dendl; | |
34 | ||
35 | librados::ObjectReadOperation op; | |
36 | librbd::cls_client::mirror_image_list_start(&op, m_start_after, MAX_RETURN); | |
37 | ||
38 | librados::AioCompletion *aio_comp = create_rados_callback< | |
39 | RefreshImagesRequest<I>, | |
40 | &RefreshImagesRequest<I>::handle_mirror_image_list>(this); | |
41 | int r = m_remote_io_ctx.aio_operate(RBD_MIRRORING, aio_comp, &op, &m_out_bl); | |
42 | assert(r == 0); | |
43 | aio_comp->release(); | |
44 | } | |
45 | ||
46 | template <typename I> | |
47 | void RefreshImagesRequest<I>::handle_mirror_image_list(int r) { | |
48 | dout(10) << "r=" << r << dendl; | |
49 | ||
50 | std::map<std::string, std::string> ids; | |
51 | if (r == 0) { | |
52 | bufferlist::iterator it = m_out_bl.begin(); | |
53 | r = librbd::cls_client::mirror_image_list_finish(&it, &ids); | |
54 | } | |
55 | ||
56 | if (r < 0 && r != -ENOENT) { | |
57 | derr << "failed to list mirrored images: " << cpp_strerror(r) << dendl; | |
58 | finish(r); | |
59 | return; | |
60 | } | |
61 | ||
62 | // store as global -> local image ids | |
63 | for (auto &id : ids) { | |
64 | m_image_ids->emplace(id.second, id.first); | |
65 | } | |
66 | ||
67 | if (ids.size() == MAX_RETURN) { | |
68 | m_start_after = ids.rbegin()->first; | |
69 | mirror_image_list(); | |
70 | return; | |
71 | } | |
72 | ||
73 | finish(0); | |
74 | } | |
75 | ||
76 | template <typename I> | |
77 | void RefreshImagesRequest<I>::finish(int r) { | |
78 | dout(10) << "r=" << r << dendl; | |
79 | ||
80 | m_on_finish->complete(r); | |
81 | delete this; | |
82 | } | |
83 | ||
84 | } // namespace pool_watcher | |
85 | } // namespace mirror | |
86 | } // namespace rbd | |
87 | ||
88 | template class rbd::mirror::pool_watcher::RefreshImagesRequest<librbd::ImageCtx>; |