-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#include "librbd/mirror/GetInfoRequest.h"
-#include "common/dout.h"
-#include "common/errno.h"
-#include "cls/rbd/cls_rbd_client.h"
-#include "librbd/ImageCtx.h"
-#include "librbd/ImageState.h"
-#include "librbd/Journal.h"
-#include "librbd/Utils.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::mirror::GetInfoRequest: " << this \
- << " " << __func__ << ": "
-
-namespace librbd {
-namespace mirror {
-
-using librbd::util::create_context_callback;
-using librbd::util::create_rados_callback;
-
-template <typename I>
-void GetInfoRequest<I>::send() {
- refresh_image();
-}
-
-template <typename I>
-void GetInfoRequest<I>::refresh_image() {
- if (!m_image_ctx.state->is_refresh_required()) {
- get_mirror_image();
- return;
- }
-
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << dendl;
-
- auto ctx = create_context_callback<
- GetInfoRequest<I>, &GetInfoRequest<I>::handle_refresh_image>(this);
- m_image_ctx.state->refresh(ctx);
-}
-
-template <typename I>
-void GetInfoRequest<I>::handle_refresh_image(int r) {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << "r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "failed to refresh image: " << cpp_strerror(r) << dendl;
- finish(r);
- return;
- }
-
- get_mirror_image();
-}
-
-template <typename I>
-void GetInfoRequest<I>::get_mirror_image() {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << dendl;
-
- librados::ObjectReadOperation op;
- cls_client::mirror_image_get_start(&op, m_image_ctx.id);
-
- librados::AioCompletion *comp = create_rados_callback<
- GetInfoRequest<I>, &GetInfoRequest<I>::handle_get_mirror_image>(this);
- int r = m_image_ctx.md_ctx.aio_operate(RBD_MIRRORING, comp, &op, &m_out_bl);
- assert(r == 0);
- comp->release();
-}
-
-template <typename I>
-void GetInfoRequest<I>::handle_get_mirror_image(int r) {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << "r=" << r << dendl;
-
- m_mirror_image->state = cls::rbd::MIRROR_IMAGE_STATE_DISABLED;
- *m_promotion_state = PROMOTION_STATE_NON_PRIMARY;
- if (r == 0) {
- bufferlist::iterator iter = m_out_bl.begin();
- r = cls_client::mirror_image_get_finish(&iter, m_mirror_image);
- }
-
- if (r == -ENOENT ||
- m_mirror_image->state != cls::rbd::MIRROR_IMAGE_STATE_ENABLED) {
- ldout(cct, 20) << "mirroring is disabled" << dendl;
- finish(0);
- return;
- } else if (r < 0) {
- lderr(cct) << "failed to retrieve mirroring state: " << cpp_strerror(r)
- << dendl;
- finish(r);
- return;
- }
-
- get_tag_owner();
-}
-
-template <typename I>
-void GetInfoRequest<I>::get_tag_owner() {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << dendl;
-
- auto ctx = create_context_callback<
- GetInfoRequest<I>, &GetInfoRequest<I>::handle_get_tag_owner>(this);
- Journal<I>::get_tag_owner(m_image_ctx.md_ctx, m_image_ctx.id,
- &m_mirror_uuid, m_image_ctx.op_work_queue, ctx);
-}
-
-template <typename I>
-void GetInfoRequest<I>::handle_get_tag_owner(int r) {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << "r=" << r << dendl;
-
- if (r < 0) {
- lderr(cct) << "failed to determine tag ownership: " << cpp_strerror(r)
- << dendl;
- finish(r);
- return;
- }
-
- if (m_mirror_uuid == Journal<>::LOCAL_MIRROR_UUID) {
- *m_promotion_state = PROMOTION_STATE_PRIMARY;
- } else if (m_mirror_uuid == Journal<>::ORPHAN_MIRROR_UUID) {
- *m_promotion_state = PROMOTION_STATE_ORPHAN;
- }
-
- finish(0);
-}
-
-template <typename I>
-void GetInfoRequest<I>::finish(int r) {
- CephContext *cct = m_image_ctx.cct;
- ldout(cct, 20) << "r=" << r << dendl;
-
- m_on_finish->complete(r);
- delete this;
-}
-
-} // namespace mirror
-} // namespace librbd
-
-template class librbd::mirror::GetInfoRequest<librbd::ImageCtx>;