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[stor4nfv.git] / src / ceph / src / librbd / mirror / GetInfoRequest.h

diff --git a/src/ceph/src/librbd/mirror/GetInfoRequest.h b/src/ceph/src/librbd/mirror/GetInfoRequest.h
new file mode 100644 (file)
index 0000000..c37ea58
--- /dev/null
+++ b/src/ceph/src/librbd/mirror/GetInfoRequest.h
@@ -0,0 +1,87 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
+#define CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
+
+#include "include/buffer.h"
+#include "librbd/mirror/Types.h"
+#include <string>
+
+struct Context;
+namespace cls { namespace rbd { struct MirrorImage; } }
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace mirror {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class GetInfoRequest {
+public:
+  static GetInfoRequest *create(ImageCtxT &image_ctx,
+                                cls::rbd::MirrorImage *mirror_image,
+                                PromotionState *promotion_state,
+                                Context *on_finish) {
+    return new GetInfoRequest(image_ctx, mirror_image, promotion_state,
+                              on_finish);
+  }
+
+  GetInfoRequest(ImageCtxT &image_ctx, cls::rbd::MirrorImage *mirror_image,
+                 PromotionState *promotion_state, Context *on_finish)
+    : m_image_ctx(image_ctx), m_mirror_image(mirror_image),
+      m_promotion_state(promotion_state), m_on_finish(on_finish) {
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * REFRESH
+   *    |
+   *    v
+   * GET_MIRROR_IMAGE
+   *    |
+   *    v
+   * GET_TAG_OWNER
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+
+  ImageCtxT &m_image_ctx;
+  cls::rbd::MirrorImage *m_mirror_image;
+  PromotionState *m_promotion_state;
+  Context *m_on_finish;
+
+  bufferlist m_out_bl;
+  std::string m_mirror_uuid;
+
+  void refresh_image();
+  void handle_refresh_image(int r);
+
+  void get_mirror_image();
+  void handle_get_mirror_image(int r);
+
+  void get_tag_owner();
+  void handle_get_tag_owner(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace mirror
+} // namespace librbd
+
+extern template class librbd::mirror::GetInfoRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
+