initial code repo

[stor4nfv.git] / src / ceph / src / tools / rbd_mirror / image_replayer / CreateImageRequest.h

diff --git a/src/ceph/src/tools/rbd_mirror/image_replayer/CreateImageRequest.h b/src/ceph/src/tools/rbd_mirror/image_replayer/CreateImageRequest.h
new file mode 100644 (file)
index 0000000..b45deb6
--- /dev/null
+++ b/src/ceph/src/tools/rbd_mirror/image_replayer/CreateImageRequest.h
@@ -0,0 +1,147 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef RBD_MIRROR_IMAGE_REPLAYER_CREATE_IMAGE_REQUEST_H
+#define RBD_MIRROR_IMAGE_REPLAYER_CREATE_IMAGE_REQUEST_H
+
+#include "include/int_types.h"
+#include "include/types.h"
+#include "include/rados/librados.hpp"
+#include "librbd/Types.h"
+#include <string>
+
+class Context;
+class ContextWQ;
+namespace librbd { class ImageCtx; }
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class CreateImageRequest {
+public:
+  static CreateImageRequest *create(librados::IoCtx &local_io_ctx,
+                                    ContextWQ *work_queue,
+                                    const std::string &global_image_id,
+                                    const std::string &remote_mirror_uuid,
+                                    const std::string &local_image_name,
+                                   const std::string &local_image_id,
+                                    ImageCtxT *remote_image_ctx,
+                                    Context *on_finish) {
+    return new CreateImageRequest(local_io_ctx, work_queue, global_image_id,
+                                  remote_mirror_uuid, local_image_name,
+                                  local_image_id, remote_image_ctx, on_finish);
+  }
+
+  CreateImageRequest(librados::IoCtx &local_io_ctx, ContextWQ *work_queue,
+                     const std::string &global_image_id,
+                     const std::string &remote_mirror_uuid,
+                     const std::string &local_image_name,
+                    const std::string &local_image_id,
+                     ImageCtxT *remote_image_ctx,
+                     Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+   *    |                                                           *
+   *    | (non-clone)                                               *
+   *    |\------------> CREATE_IMAGE ---------------------\         * (error)
+   *    |                                                 |         *
+   *    | (clone)                                         |         *
+   *    \-------------> GET_PARENT_GLOBAL_IMAGE_ID  * * * | * * *   *
+   *                        |                             |       * *
+   *                        v                             |         *
+   *                    GET_LOCAL_PARENT_IMAGE_ID * * * * | * * *   *
+   *                        |                             |       * *
+   *                        v                             |         *
+   *                    OPEN_REMOTE_PARENT  * * * * * * * | * * *   *
+   *                        |                             |       * *
+   *                        v                             |         *
+   *                    OPEN_LOCAL_PARENT * * * * * * *   |         *
+   *                        |                         *   |         *
+   *                        v                         *   |         *
+   *                    SET_LOCAL_PARENT_SNAP         *   |         *
+   *                        |         *               *   |         *
+   *                        v         *               *   |         *
+   *                    CLONE_IMAGE   *               *   |         *
+   *                        |         *               *   |         *
+   *                        v         v               *   |         *
+   *                    CLOSE_LOCAL_PARENT            *   |         *
+   *                        |                         *   |         *
+   *                        v                         *   |         *
+   *                    CLOSE_REMOTE_PARENT < * * * * *   |         *
+   *                        |                             v         *
+   *                        \------------------------> <finish> < * *
+   * @endverbatim
+   */
+
+  librados::IoCtx &m_local_io_ctx;
+  ContextWQ *m_work_queue;
+  std::string m_global_image_id;
+  std::string m_remote_mirror_uuid;
+  std::string m_local_image_name;
+  std::string m_local_image_id;
+  ImageCtxT *m_remote_image_ctx;
+  Context *m_on_finish;
+
+  librados::IoCtx m_remote_parent_io_ctx;
+  ImageCtxT *m_remote_parent_image_ctx = nullptr;
+  librbd::ParentSpec m_remote_parent_spec;
+
+  librados::IoCtx m_local_parent_io_ctx;
+  ImageCtxT *m_local_parent_image_ctx = nullptr;
+  librbd::ParentSpec m_local_parent_spec;
+
+  bufferlist m_out_bl;
+  std::string m_parent_global_image_id;
+  std::string m_parent_pool_name;
+  std::string m_parent_snap_name;
+  int m_ret_val = 0;
+
+  void create_image();
+  void handle_create_image(int r);
+
+  void get_parent_global_image_id();
+  void handle_get_parent_global_image_id(int r);
+
+  void get_local_parent_image_id();
+  void handle_get_local_parent_image_id(int r);
+
+  void open_remote_parent_image();
+  void handle_open_remote_parent_image(int r);
+
+  void open_local_parent_image();
+  void handle_open_local_parent_image(int r);
+
+  void set_local_parent_snap();
+  void handle_set_local_parent_snap(int r);
+
+  void clone_image();
+  void handle_clone_image(int r);
+
+  void close_local_parent_image();
+  void handle_close_local_parent_image(int r);
+
+  void close_remote_parent_image();
+  void handle_close_remote_parent_image(int r);
+
+  void error(int r);
+  void finish(int r);
+
+  int validate_parent();
+
+};
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::image_replayer::CreateImageRequest<librbd::ImageCtx>;
+
+#endif // RBD_MIRROR_IMAGE_REPLAYER_CREATE_IMAGE_REQUEST_H