1 files changed, 162 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/image_replayer/journal/CreateLocalImageRequest.cc b/src/tools/rbd_mirror/image_replayer/journal/CreateLocalImageRequest.cc
new file mode 100644
index 000000000..087cf4f5f
--- /dev/null
+++ b/src/tools/rbd_mirror/image_replayer/journal/CreateLocalImageRequest.cc
@@ -0,0 +1,162 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "CreateLocalImageRequest.h"
+#include "include/rados/librados.hpp"
+#include "common/debug.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "journal/Journaler.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/Utils.h"
+#include "librbd/journal/Types.h"
+#include "tools/rbd_mirror/PoolMetaCache.h"
+#include "tools/rbd_mirror/ProgressContext.h"
+#include "tools/rbd_mirror/Threads.h"
+#include "tools/rbd_mirror/image_replayer/CreateImageRequest.h"
+#include "tools/rbd_mirror/image_replayer/Utils.h"
+#include "tools/rbd_mirror/image_replayer/journal/StateBuilder.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rbd_mirror
+#undef dout_prefix
+#define dout_prefix *_dout << "rbd::mirror::image_replayer::journal::" \
+                           << "CreateLocalImageRequest: " << this << " " \
+                           << __func__ << ": "
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+namespace journal {
+
+using librbd::util::create_async_context_callback;
+using librbd::util::create_context_callback;
+
+template <typename I>
+void CreateLocalImageRequest<I>::send() {
+  unregister_client();
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::unregister_client() {
+  dout(10) << dendl;
+  update_progress("UNREGISTER_CLIENT");
+
+  auto ctx = create_context_callback<
+    CreateLocalImageRequest<I>,
+    &CreateLocalImageRequest<I>::handle_unregister_client>(this);
+  m_state_builder->remote_journaler->unregister_client(ctx);
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::handle_unregister_client(int r) {
+  dout(10) << "r=" << r << dendl;
+  if (r < 0 && r != -ENOENT) {
+    derr << "failed to unregister with remote journal: " << cpp_strerror(r)
+         << dendl;
+    finish(r);
+    return;
+  }
+
+  m_state_builder->local_image_id = "";
+  m_state_builder->remote_client_meta = {};
+  register_client();
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::register_client() {
+  ceph_assert(m_state_builder->local_image_id.empty());
+  m_state_builder->local_image_id =
+    librbd::util::generate_image_id<I>(m_local_io_ctx);
+  dout(10) << "local_image_id=" << m_state_builder->local_image_id << dendl;
+  update_progress("REGISTER_CLIENT");
+
+  librbd::journal::MirrorPeerClientMeta client_meta{
+    m_state_builder->local_image_id};
+  client_meta.state = librbd::journal::MIRROR_PEER_STATE_SYNCING;
+
+  librbd::journal::ClientData client_data{client_meta};
+  bufferlist client_data_bl;
+  encode(client_data, client_data_bl);
+
+  auto ctx = create_context_callback<
+    CreateLocalImageRequest<I>,
+    &CreateLocalImageRequest<I>::handle_register_client>(this);
+  m_state_builder->remote_journaler->register_client(client_data_bl, ctx);
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::handle_register_client(int r) {
+  dout(10) << "r=" << r << dendl;
+
+  if (r < 0) {
+    derr << "failed to register with remote journal: " << cpp_strerror(r)
+         << dendl;
+    finish(r);
+    return;
+  }
+
+  m_state_builder->remote_client_state = cls::journal::CLIENT_STATE_CONNECTED;
+  m_state_builder->remote_client_meta = {m_state_builder->local_image_id};
+  m_state_builder->remote_client_meta.state =
+    librbd::journal::MIRROR_PEER_STATE_SYNCING;
+
+  create_local_image();
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::create_local_image() {
+  dout(10) << "local_image_id=" << m_state_builder->local_image_id << dendl;
+  update_progress("CREATE_LOCAL_IMAGE");
+
+  m_remote_image_ctx->image_lock.lock_shared();
+  std::string image_name = m_remote_image_ctx->name;
+  m_remote_image_ctx->image_lock.unlock_shared();
+
+  auto ctx = create_context_callback<
+    CreateLocalImageRequest<I>,
+    &CreateLocalImageRequest<I>::handle_create_local_image>(this);
+  auto request = CreateImageRequest<I>::create(
+    m_threads, m_local_io_ctx, m_global_image_id,
+    m_state_builder->remote_mirror_uuid, image_name,
+    m_state_builder->local_image_id, m_remote_image_ctx,
+    m_pool_meta_cache, cls::rbd::MIRROR_IMAGE_MODE_JOURNAL, ctx);
+  request->send();
+}
+template <typename I>
+void CreateLocalImageRequest<I>::handle_create_local_image(int r) {
+  dout(10) << "r=" << r << dendl;
+
+  if (r == -EBADF) {
+    dout(5) << "image id " << m_state_builder->local_image_id << " "
+            << "already in-use" << dendl;
+    unregister_client();
+    return;
+  } else if (r < 0) {
+    if (r == -ENOENT) {
+      dout(10) << "parent image does not exist" << dendl;
+    } else {
+      derr << "failed to create local image: " << cpp_strerror(r) << dendl;
+    }
+    finish(r);
+    return;
+  }
+
+  finish(0);
+}
+
+template <typename I>
+void CreateLocalImageRequest<I>::update_progress(
+    const std::string& description) {
+  dout(15) << description << dendl;
+  if (m_progress_ctx != nullptr) {
+    m_progress_ctx->update_progress(description);
+  }
+}
+
+} // namespace journal
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+template class rbd::mirror::image_replayer::journal::CreateLocalImageRequest<librbd::ImageCtx>;