+++ /dev/null
-// -*- 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 "include/assert.h"
-#include "librbd/Utils.h"
-#include "common/Timer.h"
-#include "common/WorkQueue.h"
-#include "journal/Settings.h"
-#include "librbd/journal/CreateRequest.h"
-#include "librbd/journal/RemoveRequest.h"
-
-#define dout_subsys ceph_subsys_rbd
-#undef dout_prefix
-#define dout_prefix *_dout << "librbd::Journal::CreateRequest: "
-
-namespace librbd {
-
-using util::create_context_callback;
-
-namespace journal {
-
-template<typename I>
-CreateRequest<I>::CreateRequest(IoCtx &ioctx, const std::string &imageid,
- uint8_t order, uint8_t splay_width,
- const std::string &object_pool,
- uint64_t tag_class, TagData &tag_data,
- const std::string &client_id,
- ContextWQ *op_work_queue,
- Context *on_finish)
- : m_ioctx(ioctx), m_image_id(imageid), m_order(order),
- m_splay_width(splay_width), m_object_pool(object_pool),
- m_tag_class(tag_class), m_tag_data(tag_data), 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 CreateRequest<I>::send() {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- if (m_order > 64 || m_order < 12) {
- lderr(m_cct) << "order must be in the range [12, 64]" << dendl;
- complete(-EDOM);
- return;
- }
- if (m_splay_width == 0) {
- complete(-EINVAL);
- return;
- }
-
- get_pool_id();
-}
-
-template<typename I>
-void CreateRequest<I>::get_pool_id() {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- if (m_object_pool.empty()) {
- create_journal();
- return;
- }
-
- librados::Rados rados(m_ioctx);
- IoCtx data_ioctx;
- int r = rados.ioctx_create(m_object_pool.c_str(), data_ioctx);
- if (r != 0) {
- lderr(m_cct) << "failed to create journal: "
- << "error opening journal object pool '" << m_object_pool
- << "': " << cpp_strerror(r) << dendl;
- complete(r);
- return;
- }
-
- m_pool_id = data_ioctx.get_id();
- create_journal();
-}
-
-template<typename I>
-void CreateRequest<I>::create_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, {});
-
- using klass = CreateRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_create_journal>(this);
-
- m_journaler->create(m_order, m_splay_width, m_pool_id, ctx);
-}
-
-template<typename I>
-Context *CreateRequest<I>::handle_create_journal(int *result) {
- ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to create journal: " << cpp_strerror(*result) << dendl;
- shut_down_journaler(*result);
- return nullptr;
- }
-
- allocate_journal_tag();
- return nullptr;
-}
-
-template<typename I>
-void CreateRequest<I>::allocate_journal_tag() {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- using klass = CreateRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_journal_tag>(this);
-
- ::encode(m_tag_data, m_bl);
- m_journaler->allocate_tag(m_tag_class, m_bl, &m_tag, ctx);
-}
-
-template<typename I>
-Context *CreateRequest<I>::handle_journal_tag(int *result) {
- ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to allocate tag: " << cpp_strerror(*result) << dendl;
- shut_down_journaler(*result);
- return nullptr;
- }
-
- register_client();
- return nullptr;
-}
-
-template<typename I>
-void CreateRequest<I>::register_client() {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- m_bl.clear();
- ::encode(ClientData{ImageClientMeta{m_tag.tag_class}}, m_bl);
-
- using klass = CreateRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_register_client>(this);
-
- m_journaler->register_client(m_bl, ctx);
-}
-
-template<typename I>
-Context *CreateRequest<I>::handle_register_client(int *result) {
- ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "failed to register client: " << cpp_strerror(*result) << dendl;
- }
-
- shut_down_journaler(*result);
- return nullptr;
-}
-
-template<typename I>
-void CreateRequest<I>::shut_down_journaler(int r) {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- m_r_saved = r;
-
- using klass = CreateRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_journaler_shutdown>(this);
-
- m_journaler->shut_down(ctx);
-}
-
-template<typename I>
-Context *CreateRequest<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) {
- complete(0);
- return nullptr;
- }
-
- // there was an error during journal creation, so we rollback
- // what ever was done. the easiest way to do this is to invoke
- // journal remove state machine, although it's not the most
- // cleanest approach when it comes to redundancy, but that's
- // ok during the failure path.
- remove_journal();
- return nullptr;
-}
-
-template<typename I>
-void CreateRequest<I>::remove_journal() {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- using klass = CreateRequest<I>;
- Context *ctx = create_context_callback<klass, &klass::handle_remove_journal>(this);
-
- RemoveRequest<I> *req = RemoveRequest<I>::create(
- m_ioctx, m_image_id, m_image_client_id, m_op_work_queue, ctx);
- req->send();
-}
-
-template<typename I>
-Context *CreateRequest<I>::handle_remove_journal(int *result) {
- ldout(m_cct, 20) << __func__ << ": r=" << *result << dendl;
-
- if (*result < 0) {
- lderr(m_cct) << "error cleaning up journal after creation failed: "
- << cpp_strerror(*result) << dendl;
- }
-
- complete(m_r_saved);
- return nullptr;
-}
-
-template<typename I>
-void CreateRequest<I>::complete(int r) {
- ldout(m_cct, 20) << this << " " << __func__ << dendl;
-
- if (r == 0) {
- ldout(m_cct, 20) << "done." << dendl;
- }
-
- m_on_finish->complete(r);
- delete this;
-}
-
-} // namespace journal
-} // namespace librbd
-
-template class librbd::journal::CreateRequest<librbd::ImageCtx>;
Code Review / stor4nfv.git / blobdiff