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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/dout.h"
#include "common/errno.h"
#include "common/Timer.h"
#include "journal/Settings.h"
#include "include/ceph_assert.h"
#include "librbd/Utils.h"
#include "librbd/journal/RemoveRequest.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::Journal::RemoveRequest: "
namespace librbd {
using util::create_context_callback;
namespace journal {
template<typename I>
RemoveRequest<I>::RemoveRequest(IoCtx &ioctx, const std::string &image_id,
const std::string &client_id,
ContextWQ *op_work_queue,
Context *on_finish)
: m_ioctx(ioctx), m_image_id(image_id), m_image_client_id(client_id),
m_op_work_queue(op_work_queue), m_on_finish(on_finish) {
m_cct = reinterpret_cast<CephContext *>(m_ioctx.cct());
}
template<typename I>
void RemoveRequest<I>::send() {
ldout(m_cct, 20) << this << " " << __func__ << dendl;
stat_journal();
}
template<typename I>
void RemoveRequest<I>::stat_journal() {
ldout(m_cct, 20) << this << " " << __func__ << dendl;
ImageCtx::get_timer_instance(m_cct, &m_timer, &m_timer_lock);
m_journaler = new Journaler(m_op_work_queue, m_timer, m_timer_lock, m_ioctx,
m_image_id, m_image_client_id, {}, nullptr);
using klass = RemoveRequest<I>;
Context *ctx = create_context_callback<klass, &klass::handle_stat_journal>(this);
m_journaler->exists(ctx);
}
template<typename I>
Context *RemoveRequest<I>::handle_stat_journal(int *result) {
ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
if ((*result < 0) && (*result != -ENOENT)) {
lderr(m_cct) << "failed to stat journal header: " << cpp_strerror(*result) << dendl;
shut_down_journaler(*result);
return nullptr;
}
if (*result == -ENOENT) {
shut_down_journaler(0);
return nullptr;
}
init_journaler();
return nullptr;
}
template<typename I>
void RemoveRequest<I>::init_journaler() {
ldout(m_cct, 20) << this << " " << __func__ << dendl;
using klass = RemoveRequest<I>;
Context *ctx = create_context_callback<klass, &klass::handle_init_journaler>(this);
m_journaler->init(ctx);
}
template<typename I>
Context *RemoveRequest<I>::handle_init_journaler(int *result) {
ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
if ((*result < 0) && (*result != -ENOENT)) {
lderr(m_cct) << "failed to init journaler: " << cpp_strerror(*result) << dendl;
shut_down_journaler(*result);
return nullptr;
}
remove_journal();
return nullptr;
}
template<typename I>
void RemoveRequest<I>::remove_journal() {
ldout(m_cct, 20) << this << " " << __func__ << dendl;
using klass = RemoveRequest<I>;
Context *ctx = create_context_callback<klass, &klass::handle_remove_journal>(this);
m_journaler->remove(true, ctx);
}
template<typename I>
Context *RemoveRequest<I>::handle_remove_journal(int *result) {
ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
if (*result < 0) {
lderr(m_cct) << "failed to remove journal: " << cpp_strerror(*result) << dendl;
}
shut_down_journaler(*result);
return nullptr;
}
template<typename I>
void RemoveRequest<I>::shut_down_journaler(int r) {
ldout(m_cct, 20) << this << " " << __func__ << dendl;
m_r_saved = r;
using klass = RemoveRequest<I>;
Context *ctx = create_context_callback<klass, &klass::handle_journaler_shutdown>(this);
m_journaler->shut_down(ctx);
}
template<typename I>
Context *RemoveRequest<I>::handle_journaler_shutdown(int *result) {
ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
if (*result < 0) {
lderr(m_cct) << "failed to shut down journaler: " << cpp_strerror(*result) << dendl;
}
delete m_journaler;
if (m_r_saved == 0) {
ldout(m_cct, 20) << "done." << dendl;
}
m_on_finish->complete(m_r_saved);
delete this;
return nullptr;
}
} // namespace journal
} // namespace librbd
template class librbd::journal::RemoveRequest<librbd::ImageCtx>;
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