1 files changed, 153 insertions, 0 deletions
diff --git a/src/tools/rbd_mirror/image_replayer/PrepareRemoteImageRequest.h b/src/tools/rbd_mirror/image_replayer/PrepareRemoteImageRequest.h
new file mode 100644
index 000000000..483cfc001
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+++ b/src/tools/rbd_mirror/image_replayer/PrepareRemoteImageRequest.h
@@ -0,0 +1,153 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef RBD_MIRROR_IMAGE_REPLAYER_PREPARE_REMOTE_IMAGE_REQUEST_H
+#define RBD_MIRROR_IMAGE_REPLAYER_PREPARE_REMOTE_IMAGE_REQUEST_H
+
+#include "include/buffer_fwd.h"
+#include "include/rados/librados_fwd.hpp"
+#include "cls/journal/cls_journal_types.h"
+#include "cls/rbd/cls_rbd_types.h"
+#include "librbd/journal/Types.h"
+#include "librbd/journal/TypeTraits.h"
+#include "librbd/mirror/Types.h"
+#include "tools/rbd_mirror/Types.h"
+#include <string>
+
+namespace journal { class Journaler; }
+namespace journal { struct CacheManagerHandler; }
+namespace librbd { struct ImageCtx; }
+namespace librbd { namespace journal { struct MirrorPeerClientMeta; } }
+
+struct Context;
+
+namespace rbd {
+namespace mirror {
+
+template <typename> struct Threads;
+
+namespace image_replayer {
+
+template <typename> class StateBuilder;
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class PrepareRemoteImageRequest {
+public:
+  typedef librbd::journal::TypeTraits<ImageCtxT> TypeTraits;
+  typedef typename TypeTraits::Journaler Journaler;
+  typedef librbd::journal::MirrorPeerClientMeta MirrorPeerClientMeta;
+
+  static PrepareRemoteImageRequest *create(
+      Threads<ImageCtxT> *threads,
+      librados::IoCtx &local_io_ctx,
+      librados::IoCtx &remote_io_ctx,
+      const std::string &global_image_id,
+      const std::string &local_mirror_uuid,
+      const RemotePoolMeta& remote_pool_meta,
+      ::journal::CacheManagerHandler *cache_manager_handler,
+      StateBuilder<ImageCtxT>** state_builder,
+      Context *on_finish) {
+    return new PrepareRemoteImageRequest(threads, local_io_ctx, remote_io_ctx,
+                                         global_image_id, local_mirror_uuid,
+                                         remote_pool_meta,
+                                         cache_manager_handler, state_builder,
+                                         on_finish);
+  }
+
+  PrepareRemoteImageRequest(
+      Threads<ImageCtxT> *threads,
+      librados::IoCtx &local_io_ctx,
+      librados::IoCtx &remote_io_ctx,
+      const std::string &global_image_id,
+      const std::string &local_mirror_uuid,
+      const RemotePoolMeta& remote_pool_meta,
+      ::journal::CacheManagerHandler *cache_manager_handler,
+      StateBuilder<ImageCtxT>** state_builder,
+      Context *on_finish)
+    : m_threads(threads),
+      m_local_io_ctx(local_io_ctx),
+      m_remote_io_ctx(remote_io_ctx),
+      m_global_image_id(global_image_id),
+      m_local_mirror_uuid(local_mirror_uuid),
+      m_remote_pool_meta(remote_pool_meta),
+      m_cache_manager_handler(cache_manager_handler),
+      m_state_builder(state_builder),
+      m_on_finish(on_finish) {
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * GET_REMOTE_IMAGE_ID
+   *    |
+   *    v
+   * GET_REMOTE_MIRROR_INFO
+   *    |
+   *    | (journal)
+   *    \-----------> GET_CLIENT
+   *    |                 |
+   *    |                 v (skip if not needed)
+   *    |             REGISTER_CLIENT
+   *    |                 |
+   *    |                 |
+   *    |/----------------/
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+
+  Threads<ImageCtxT> *m_threads;
+  librados::IoCtx &m_local_io_ctx;
+  librados::IoCtx &m_remote_io_ctx;
+  std::string m_global_image_id;
+  std::string m_local_mirror_uuid;
+  RemotePoolMeta m_remote_pool_meta;
+  ::journal::CacheManagerHandler *m_cache_manager_handler;
+  StateBuilder<ImageCtxT>** m_state_builder;
+  Context *m_on_finish;
+
+  bufferlist m_out_bl;
+  std::string m_remote_image_id;
+  cls::rbd::MirrorImage m_mirror_image;
+  librbd::mirror::PromotionState m_promotion_state =
+    librbd::mirror::PROMOTION_STATE_UNKNOWN;
+  std::string m_primary_mirror_uuid;
+
+  // journal-based mirroring
+  Journaler *m_remote_journaler = nullptr;
+  cls::journal::Client m_client;
+
+  void get_remote_image_id();
+  void handle_get_remote_image_id(int r);
+
+  void get_mirror_info();
+  void handle_get_mirror_info(int r);
+
+  void get_client();
+  void handle_get_client(int r);
+
+  void register_client();
+  void handle_register_client(int r);
+
+  void finalize_journal_state_builder(cls::journal::ClientState client_state,
+                                      const MirrorPeerClientMeta& client_meta);
+  void finalize_snapshot_state_builder();
+
+  void finish(int r);
+};
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::image_replayer::PrepareRemoteImageRequest<librbd::ImageCtx>;
+
+#endif // RBD_MIRROR_IMAGE_REPLAYER_PREPARE_REMOTE_IMAGE_REQUEST_H