initial code repo

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

diff --git a/src/ceph/src/tools/rbd_mirror/image_replayer/PrepareLocalImageRequest.h b/src/ceph/src/tools/rbd_mirror/image_replayer/PrepareLocalImageRequest.h
new file mode 100644 (file)
index 0000000..913bfd1
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+++ b/src/ceph/src/tools/rbd_mirror/image_replayer/PrepareLocalImageRequest.h
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+// -*- 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_LOCAL_IMAGE_REQUEST_H
+#define RBD_MIRROR_IMAGE_REPLAYER_PREPARE_LOCAL_IMAGE_REQUEST_H
+
+#include "include/buffer.h"
+#include <string>
+
+namespace librados { struct IoCtx; }
+namespace librbd { struct ImageCtx; }
+
+struct Context;
+struct ContextWQ;
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class PrepareLocalImageRequest {
+public:
+  static PrepareLocalImageRequest *create(librados::IoCtx &io_ctx,
+                                          const std::string &global_image_id,
+                                          std::string *local_image_id,
+                                          std::string *tag_owner,
+                                          ContextWQ *work_queue,
+                                          Context *on_finish) {
+    return new PrepareLocalImageRequest(io_ctx, global_image_id, local_image_id,
+                                        tag_owner, work_queue, on_finish);
+  }
+
+  PrepareLocalImageRequest(librados::IoCtx &io_ctx,
+                           const std::string &global_image_id,
+                           std::string *local_image_id,
+                           std::string *tag_owner,
+                           ContextWQ *work_queue,
+                           Context *on_finish)
+    : m_io_ctx(io_ctx), m_global_image_id(global_image_id),
+      m_local_image_id(local_image_id), m_tag_owner(tag_owner),
+      m_work_queue(work_queue), m_on_finish(on_finish) {
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * GET_LOCAL_IMAGE_ID
+   *    |
+   *    v
+   * GET_MIRROR_STATE
+   *    |
+   *    v
+   * <finish>
+
+   * @endverbatim
+   */
+
+  librados::IoCtx &m_io_ctx;
+  std::string m_global_image_id;
+  std::string *m_local_image_id;
+  std::string *m_tag_owner;
+  ContextWQ *m_work_queue;
+  Context *m_on_finish;
+
+  bufferlist m_out_bl;
+
+  void get_local_image_id();
+  void handle_get_local_image_id(int r);
+
+  void get_mirror_state();
+  void handle_get_mirror_state(int r);
+
+  void get_tag_owner();
+  void handle_get_tag_owner(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::image_replayer::PrepareLocalImageRequest<librbd::ImageCtx>;
+
+#endif // RBD_MIRROR_IMAGE_REPLAYER_PREPARE_LOCAL_IMAGE_REQUEST_H