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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "OpenImageRequest.h"
#include "common/debug.h"
#include "common/errno.h"
#include "librbd/ImageCtx.h"
#include "librbd/ImageState.h"
#include "librbd/Utils.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::OpenImageRequest: " \
<< this << " " << __func__ << " "
namespace rbd {
namespace mirror {
namespace image_replayer {
using librbd::util::create_context_callback;
template <typename I>
OpenImageRequest<I>::OpenImageRequest(librados::IoCtx &io_ctx, I **image_ctx,
const std::string &image_id,
bool read_only, Context *on_finish)
: m_io_ctx(io_ctx), m_image_ctx(image_ctx), m_image_id(image_id),
m_read_only(read_only), m_on_finish(on_finish) {
}
template <typename I>
void OpenImageRequest<I>::send() {
send_open_image();
}
template <typename I>
void OpenImageRequest<I>::send_open_image() {
dout(20) << dendl;
*m_image_ctx = I::create("", m_image_id, nullptr, m_io_ctx, m_read_only);
if (!m_read_only) {
// ensure non-primary images can be modified
(*m_image_ctx)->read_only_mask = ~librbd::IMAGE_READ_ONLY_FLAG_NON_PRIMARY;
}
Context *ctx = create_context_callback<
OpenImageRequest<I>, &OpenImageRequest<I>::handle_open_image>(
this);
(*m_image_ctx)->state->open(0, ctx);
}
template <typename I>
void OpenImageRequest<I>::handle_open_image(int r) {
dout(20) << ": r=" << r << dendl;
if (r < 0) {
derr << ": failed to open image '" << m_image_id << "': "
<< cpp_strerror(r) << dendl;
*m_image_ctx = nullptr;
}
finish(r);
}
template <typename I>
void OpenImageRequest<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::OpenImageRequest<librbd::ImageCtx>;
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