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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "common/debug.h"
#include "common/errno.h"
#include "librbd/Utils.h"
#include "include/rbd_types.h"
#include "cls/rbd/cls_rbd_client.h"
#include "UpdateRequest.h"
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_rbd_mirror
#undef dout_prefix
#define dout_prefix *_dout << "rbd::mirror::image_map::UpdateRequest: " \
<< this << " " << __func__
namespace rbd {
namespace mirror {
namespace image_map {
using librbd::util::create_rados_callback;
static const uint32_t MAX_UPDATE = 256;
template <typename I>
UpdateRequest<I>::UpdateRequest(librados::IoCtx &ioctx,
std::map<std::string, cls::rbd::MirrorImageMap> &&update_mapping,
std::set<std::string> &&remove_global_image_ids, Context *on_finish)
: m_ioctx(ioctx),
m_update_mapping(update_mapping),
m_remove_global_image_ids(remove_global_image_ids),
m_on_finish(on_finish) {
}
template <typename I>
void UpdateRequest<I>::send() {
dout(20) << dendl;
update_image_map();
}
template <typename I>
void UpdateRequest<I>::update_image_map() {
dout(20) << dendl;
if (m_update_mapping.empty() && m_remove_global_image_ids.empty()) {
finish(0);
return;
}
uint32_t nr_updates = 0;
librados::ObjectWriteOperation op;
auto it1 = m_update_mapping.begin();
while (it1 != m_update_mapping.end() && nr_updates++ < MAX_UPDATE) {
librbd::cls_client::mirror_image_map_update(&op, it1->first, it1->second);
it1 = m_update_mapping.erase(it1);
}
auto it2 = m_remove_global_image_ids.begin();
while (it2 != m_remove_global_image_ids.end() && nr_updates++ < MAX_UPDATE) {
librbd::cls_client::mirror_image_map_remove(&op, *it2);
it2 = m_remove_global_image_ids.erase(it2);
}
librados::AioCompletion *aio_comp = create_rados_callback<
UpdateRequest, &UpdateRequest::handle_update_image_map>(this);
int r = m_ioctx.aio_operate(RBD_MIRROR_LEADER, aio_comp, &op);
ceph_assert(r == 0);
aio_comp->release();
}
template <typename I>
void UpdateRequest<I>::handle_update_image_map(int r) {
dout(20) << ": r=" << r << dendl;
if (r < 0) {
derr << ": failed to update image map: " << cpp_strerror(r) << dendl;
finish(r);
return;
}
update_image_map();
}
template <typename I>
void UpdateRequest<I>::finish(int r) {
dout(20) << ": r=" << r << dendl;
m_on_finish->complete(r);
delete this;
}
} // namespace image_map
} // namespace mirror
} // namespace rbd
template class rbd::mirror::image_map::UpdateRequest<librbd::ImageCtx>;
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