1 files changed, 78 insertions, 0 deletions
diff --git a/src/librbd/deep_copy/MetadataCopyRequest.h b/src/librbd/deep_copy/MetadataCopyRequest.h
new file mode 100644
index 000000000..8db55db96
--- /dev/null
+++ b/src/librbd/deep_copy/MetadataCopyRequest.h
@@ -0,0 +1,78 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_DEEP_COPY_METADATA_COPY_REQUEST_H
+#define CEPH_LIBRBD_DEEP_COPY_METADATA_COPY_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/rados/librados.hpp"
+#include "librbd/ImageCtx.h"
+#include <map>
+#include <string>
+
+class Context;
+
+namespace librbd {
+namespace deep_copy {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class MetadataCopyRequest {
+public:
+  static MetadataCopyRequest* create(ImageCtxT *src_image_ctx,
+                                     ImageCtxT *dst_image_ctx,
+                                     Context *on_finish) {
+    return new MetadataCopyRequest(src_image_ctx, dst_image_ctx, on_finish);
+  }
+
+  MetadataCopyRequest(ImageCtxT *src_image_ctx, ImageCtxT *dst_image_ctx,
+                      Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * LIST_SRC_METADATA <------\
+   *    |                     | (repeat if additional
+   *    v                     |  metadata)
+   * SET_DST_METADATA --------/
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+  typedef std::map<std::string, bufferlist> Metadata;
+
+  ImageCtxT *m_src_image_ctx;
+  ImageCtxT *m_dst_image_ctx;
+  Context *m_on_finish;
+
+  CephContext *m_cct;
+  bufferlist m_out_bl;
+
+  std::map<std::string, bufferlist> m_metadata;
+  std::string m_last_metadata_key;
+  bool m_more_metadata = false;
+
+  void list_src_metadata();
+  void handle_list_src_metadata(int r);
+
+  void set_dst_metadata();
+  void handle_set_dst_metadata(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace deep_copy
+} // namespace librbd
+
+extern template class librbd::deep_copy::MetadataCopyRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_DEEP_COPY_METADATA_COPY_REQUEST_H