initial code repo

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

diff --git a/src/ceph/src/librbd/mirror/PromoteRequest.h b/src/ceph/src/librbd/mirror/PromoteRequest.h
new file mode 100644 (file)
index 0000000..185dc22
--- /dev/null
+++ b/src/ceph/src/librbd/mirror/PromoteRequest.h
@@ -0,0 +1,75 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIRROR_PROMOTE_REQUEST_H
+#define CEPH_LIBRBD_MIRROR_PROMOTE_REQUEST_H
+
+#include "cls/rbd/cls_rbd_types.h"
+#include "librbd/mirror/Types.h"
+
+struct Context;
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace mirror {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class PromoteRequest {
+public:
+  static PromoteRequest *create(ImageCtxT &image_ctx, bool force,
+                                Context *on_finish) {
+    return new PromoteRequest(image_ctx, force, on_finish);
+  }
+
+  PromoteRequest(ImageCtxT &image_ctx, bool force, Context *on_finish)
+    : m_image_ctx(image_ctx), m_force(force), m_on_finish(on_finish) {
+  }
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * GET_INFO
+   *    |
+   *    v
+   * GET_TAG_OWNER
+   *    |
+   *    v
+   * PROMOTE
+   *    |
+   *    v
+   * <finish>
+   *
+   * @endverbatim
+   */
+
+  ImageCtxT &m_image_ctx;
+  bool m_force;
+  Context *m_on_finish;
+
+  cls::rbd::MirrorImage m_mirror_image;
+  PromotionState m_promotion_state;
+
+  void get_info();
+  void handle_get_info(int r);
+
+  void promote();
+  void handle_promote(int r);
+
+  void finish(int r);
+
+};
+
+} // namespace mirror
+} // namespace librbd
+
+extern template class librbd::mirror::PromoteRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIRROR_PROMOTE_REQUEST_H