1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "IsPrimaryRequest.h"
5 #include "common/errno.h"
6 #include "common/WorkQueue.h"
7 #include "cls/rbd/cls_rbd_client.h"
8 #include "librbd/ImageCtx.h"
9 #include "librbd/Journal.h"
10 #include "librbd/Utils.h"
11 #include <type_traits>
13 #define dout_context g_ceph_context
14 #define dout_subsys ceph_subsys_rbd_mirror
16 #define dout_prefix *_dout << "rbd::mirror::image_replayer::IsPrimaryRequest: " \
17 << this << " " << __func__ << " "
21 namespace image_replayer {
23 using librbd::util::create_context_callback;
24 using librbd::util::create_rados_callback;
27 IsPrimaryRequest<I>::IsPrimaryRequest(I *image_ctx, bool *primary,
29 : m_image_ctx(image_ctx), m_primary(primary), m_on_finish(on_finish) {
33 void IsPrimaryRequest<I>::send() {
34 send_get_mirror_state();
38 void IsPrimaryRequest<I>::send_get_mirror_state() {
41 librados::ObjectReadOperation op;
42 librbd::cls_client::mirror_image_get_start(&op, m_image_ctx->id);
44 librados::AioCompletion *aio_comp = create_rados_callback<
45 IsPrimaryRequest<I>, &IsPrimaryRequest<I>::handle_get_mirror_state>(this);
46 int r = m_image_ctx->md_ctx.aio_operate(RBD_MIRRORING, aio_comp, &op,
53 void IsPrimaryRequest<I>::handle_get_mirror_state(int r) {
54 dout(20) << ": r=" << r << dendl;
56 cls::rbd::MirrorImage mirror_image;
58 bufferlist::iterator iter = m_out_bl.begin();
59 r = librbd::cls_client::mirror_image_get_finish(&iter, &mirror_image);
61 if (mirror_image.state == cls::rbd::MIRROR_IMAGE_STATE_ENABLED) {
64 } else if (mirror_image.state == cls::rbd::MIRROR_IMAGE_STATE_DISABLING) {
65 dout(5) << ": image mirroring is being disabled" << dendl;
68 derr << ": image mirroring is disabled" << dendl;
72 derr << ": failed to decode image mirror state: " << cpp_strerror(r)
76 derr << ": failed to retrieve image mirror state: " << cpp_strerror(r)
84 void IsPrimaryRequest<I>::send_is_tag_owner() {
85 // deduce the class type for the journal to support unit tests
86 using Journal = typename std::decay<
87 typename std::remove_pointer<decltype(std::declval<I>().journal)>
92 Context *ctx = create_context_callback<
93 IsPrimaryRequest<I>, &IsPrimaryRequest<I>::handle_is_tag_owner>(this);
95 Journal::is_tag_owner(m_image_ctx, m_primary, ctx);
99 void IsPrimaryRequest<I>::handle_is_tag_owner(int r) {
100 dout(20) << ": r=" << r << dendl;
103 derr << ": failed to query remote image tag owner: " << cpp_strerror(r)
110 template <typename I>
111 void IsPrimaryRequest<I>::finish(int r) {
112 dout(20) << ": r=" << r << dendl;
114 m_on_finish->complete(r);
118 } // namespace image_replayer
119 } // namespace mirror
122 template class rbd::mirror::image_replayer::IsPrimaryRequest<librbd::ImageCtx>;