ceph/src/librbd/mirror/ImageRemoveRequest.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "librbd/mirror/ImageRemoveRequest.h"
   5 #include "common/dout.h"
   6 #include "common/errno.h"
   7 #include "cls/rbd/cls_rbd_client.h"
   8 #include "librbd/MirroringWatcher.h"
   9 #include "librbd/Utils.h"
  10
  11 #define dout_subsys ceph_subsys_rbd
  12 #undef dout_prefix
  13 #define dout_prefix *_dout << "librbd::mirror::ImageRemoveRequest: " \
  14                            << this << " " << __func__ << ": "
  15
  16 namespace librbd {
  17 namespace mirror {
  18
  19 using util::create_rados_callback;
  20
  21 template <typename I>
  22 ImageRemoveRequest<I>::ImageRemoveRequest(
  23     librados::IoCtx& io_ctx, const std::string& global_image_id,
  24     const std::string& image_id, Context* on_finish)
  25   : m_io_ctx(io_ctx), m_global_image_id(global_image_id), m_image_id(image_id),
  26     m_on_finish(on_finish), m_cct(static_cast<CephContext*>(m_io_ctx.cct())) {
  27 }
  28
  29 template <typename I>
  30 void ImageRemoveRequest<I>::send() {
  31   remove_mirror_image();
  32 }
  33
  34 template <typename I>
  35 void ImageRemoveRequest<I>::remove_mirror_image() {
  36   ldout(m_cct, 10) << dendl;
  37
  38   librados::ObjectWriteOperation op;
  39   cls_client::mirror_image_remove(&op, m_image_id);
  40
  41   auto comp = create_rados_callback<
  42     ImageRemoveRequest<I>,
  43     &ImageRemoveRequest<I>::handle_remove_mirror_image>(this);
  44   int r = m_io_ctx.aio_operate(RBD_MIRRORING, comp, &op);
  45   ceph_assert(r == 0);
  46   comp->release();
  47 }
  48
  49 template <typename I>
  50 void ImageRemoveRequest<I>::handle_remove_mirror_image(int r) {
  51   ldout(m_cct, 10) << "r=" << r << dendl;
  52
  53   if (r < 0 && r != -ENOENT) {
  54     lderr(m_cct) << "failed to remove mirroring image: " << cpp_strerror(r)
  55                  << dendl;
  56     finish(r);
  57     return;
  58   }
  59
  60   notify_mirroring_watcher();
  61 }
  62
  63 template <typename I>
  64 void ImageRemoveRequest<I>::notify_mirroring_watcher() {
  65   ldout(m_cct, 10) << dendl;
  66
  67   auto ctx = util::create_context_callback<
  68     ImageRemoveRequest<I>,
  69     &ImageRemoveRequest<I>::handle_notify_mirroring_watcher>(this);
  70   MirroringWatcher<I>::notify_image_updated(
  71     m_io_ctx, cls::rbd::MIRROR_IMAGE_STATE_DISABLED,
  72     m_image_id, m_global_image_id, ctx);
  73 }
  74
  75 template <typename I>
  76 void ImageRemoveRequest<I>::handle_notify_mirroring_watcher(int r) {
  77   ldout(m_cct, 10) << "r=" << r << dendl;
  78
  79   if (r < 0) {
  80     lderr(m_cct) << "failed to notify mirror image update: " << cpp_strerror(r)
  81                  << dendl;
  82   }
  83
  84   finish(0);
  85 }
  86
  87 template <typename I>
  88 void ImageRemoveRequest<I>::finish(int r) {
  89   ldout(m_cct, 10) << "r=" << r << dendl;
  90
  91   m_on_finish->complete(r);
  92   delete this;
  93 }
  94
  95 } // namespace mirror
  96 } // namespace librbd
  97
  98 template class librbd::mirror::ImageRemoveRequest<librbd::ImageCtx>;