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-rw-r--r--src/librbd/journal/RemoveRequest.cc154
1 files changed, 154 insertions, 0 deletions
diff --git a/src/librbd/journal/RemoveRequest.cc b/src/librbd/journal/RemoveRequest.cc
new file mode 100644
index 00000000..6ed5f54c
--- /dev/null
+++ b/src/librbd/journal/RemoveRequest.cc
@@ -0,0 +1,154 @@
+// -*- 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 "common/WorkQueue.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, {});
+
+ 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>;