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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/mirror/GetStatusRequest.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"
#include "librbd/mirror/GetInfoRequest.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::mirror::GetStatusRequest: " << this \
<< " " << __func__ << ": "
namespace librbd {
namespace mirror {
using librbd::util::create_context_callback;
using librbd::util::create_rados_callback;
template <typename I>
void GetStatusRequest<I>::send() {
*m_mirror_image_status = cls::rbd::MirrorImageStatus(
{{cls::rbd::MirrorImageSiteStatus::LOCAL_MIRROR_UUID,
cls::rbd::MIRROR_IMAGE_STATUS_STATE_UNKNOWN, "status not found"}});
get_info();
}
template <typename I>
void GetStatusRequest<I>::get_info() {
CephContext *cct = m_image_ctx.cct;
ldout(cct, 20) << dendl;
auto ctx = create_context_callback<
GetStatusRequest<I>, &GetStatusRequest<I>::handle_get_info>(this);
auto req = GetInfoRequest<I>::create(m_image_ctx, m_mirror_image,
m_promotion_state,
&m_primary_mirror_uuid, ctx);
req->send();
}
template <typename I>
void GetStatusRequest<I>::handle_get_info(int r) {
CephContext *cct = m_image_ctx.cct;
ldout(cct, 20) << "r=" << r << dendl;
if (r < 0) {
if (r != -ENOENT) {
lderr(cct) << "failed to retrieve mirroring state: " << cpp_strerror(r)
<< dendl;
}
finish(r);
return;
} else if (m_mirror_image->state != cls::rbd::MIRROR_IMAGE_STATE_ENABLED) {
finish(0);
return;
}
get_status();
}
template <typename I>
void GetStatusRequest<I>::get_status() {
CephContext *cct = m_image_ctx.cct;
ldout(cct, 20) << dendl;
librados::ObjectReadOperation op;
cls_client::mirror_image_status_get_start(
&op, m_mirror_image->global_image_id);
librados::AioCompletion *comp = create_rados_callback<
GetStatusRequest<I>, &GetStatusRequest<I>::handle_get_status>(this);
int r = m_image_ctx.md_ctx.aio_operate(RBD_MIRRORING, comp, &op, &m_out_bl);
ceph_assert(r == 0);
comp->release();
}
template <typename I>
void GetStatusRequest<I>::handle_get_status(int r) {
CephContext *cct = m_image_ctx.cct;
ldout(cct, 20) << "r=" << r << dendl;
if (r == 0) {
auto iter = m_out_bl.cbegin();
r = cls_client::mirror_image_status_get_finish(&iter,
m_mirror_image_status);
}
if (r < 0 && r != -ENOENT) {
lderr(cct) << "failed to retrieve mirror image status: " << cpp_strerror(r)
<< dendl;
finish(r);
return;
}
finish(0);
}
template <typename I>
void GetStatusRequest<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::GetStatusRequest<librbd::ImageCtx>;
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