+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "tools/rbd_mirror/image_replayer/PrepareLocalImageRequest.h"
-#include "include/rados/librados.hpp"
-#include "cls/rbd/cls_rbd_client.h"
-#include "common/errno.h"
-#include "librbd/ImageCtx.h"
-#include "librbd/Journal.h"
-#include "librbd/Utils.h"
-#include "tools/rbd_mirror/Threads.h"
-#include "tools/rbd_mirror/image_replayer/GetMirrorImageIdRequest.h"
-#include <type_traits>
-
-#define dout_context g_ceph_context
-#define dout_subsys ceph_subsys_rbd_mirror
-#undef dout_prefix
-#define dout_prefix *_dout << "rbd::mirror::image_replayer::" \
- << "PrepareLocalImageRequest: " << this << " " \
- << __func__ << ": "
-
-namespace rbd {
-namespace mirror {
-namespace image_replayer {
-
-using librbd::util::create_context_callback;
-using librbd::util::create_rados_callback;
-
-template <typename I>
-void PrepareLocalImageRequest<I>::send() {
- dout(20) << dendl;
- get_local_image_id();
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::get_local_image_id() {
- dout(20) << dendl;
-
- Context *ctx = create_context_callback<
- PrepareLocalImageRequest<I>,
- &PrepareLocalImageRequest<I>::handle_get_local_image_id>(this);
- auto req = GetMirrorImageIdRequest<I>::create(m_io_ctx, m_global_image_id,
- m_local_image_id, ctx);
- req->send();
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::handle_get_local_image_id(int r) {
- dout(20) << "r=" << r << ", "
- << "local_image_id=" << *m_local_image_id << dendl;
-
- if (r < 0) {
- finish(r);
- return;
- }
-
- get_mirror_state();
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::get_mirror_state() {
- dout(20) << dendl;
-
- librados::ObjectReadOperation op;
- librbd::cls_client::mirror_image_get_start(&op, *m_local_image_id);
-
- m_out_bl.clear();
- librados::AioCompletion *aio_comp = create_rados_callback<
- PrepareLocalImageRequest<I>,
- &PrepareLocalImageRequest<I>::handle_get_mirror_state>(this);
- int r = m_io_ctx.aio_operate(RBD_MIRRORING, aio_comp, &op, &m_out_bl);
- assert(r == 0);
- aio_comp->release();
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::handle_get_mirror_state(int r) {
- dout(20) << ": r=" << r << dendl;
-
- cls::rbd::MirrorImage mirror_image;
- if (r == 0) {
- bufferlist::iterator iter = m_out_bl.begin();
- r = librbd::cls_client::mirror_image_get_finish(&iter, &mirror_image);
- }
-
- if (r < 0) {
- derr << "failed to retrieve image mirror state: " << cpp_strerror(r)
- << dendl;
- finish(r);
- return;
- }
-
- // TODO save current mirror state to determine if we should
- // delete a partially formed image
- // (e.g. MIRROR_IMAGE_STATE_CREATING/DELETING)
-
- get_tag_owner();
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::get_tag_owner() {
- // deduce the class type for the journal to support unit tests
- using Journal = typename std::decay<
- typename std::remove_pointer<decltype(std::declval<I>().journal)>
- ::type>::type;
-
- dout(20) << dendl;
-
- Context *ctx = create_context_callback<
- PrepareLocalImageRequest<I>,
- &PrepareLocalImageRequest<I>::handle_get_tag_owner>(this);
- Journal::get_tag_owner(m_io_ctx, *m_local_image_id, m_tag_owner,
- m_work_queue, ctx);
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::handle_get_tag_owner(int r) {
- dout(20) << "r=" << r << ", "
- << "tag_owner=" << *m_tag_owner << dendl;
-
- if (r < 0) {
- derr << "failed to retrieve journal tag owner: " << cpp_strerror(r)
- << dendl;
- finish(r);
- return;
- }
-
- finish(0);
-}
-
-template <typename I>
-void PrepareLocalImageRequest<I>::finish(int r) {
- dout(20) << "r=" << r << dendl;
-
- m_on_finish->complete(r);
- delete this;
-}
-
-} // namespace image_replayer
-} // namespace mirror
-} // namespace rbd
-
-template class rbd::mirror::image_replayer::PrepareLocalImageRequest<librbd::ImageCtx>;