initial code repo

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

diff --git a/src/ceph/src/tools/rbd_mirror/image_replayer/IsPrimaryRequest.h b/src/ceph/src/tools/rbd_mirror/image_replayer/IsPrimaryRequest.h
new file mode 100644 (file)
index 0000000..ddb332c
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+++ b/src/ceph/src/tools/rbd_mirror/image_replayer/IsPrimaryRequest.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_IS_PRIMARY_REQUEST_H
+#define RBD_MIRROR_IMAGE_REPLAYER_IS_PRIMARY_REQUEST_H
+
+#include "include/buffer.h"
+
+class Context;
+class ContextWQ;
+namespace librbd { class ImageCtx; }
+
+namespace rbd {
+namespace mirror {
+namespace image_replayer {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class IsPrimaryRequest {
+public:
+  static IsPrimaryRequest* create(ImageCtxT *image_ctx, bool *primary,
+                                  Context *on_finish) {
+    return new IsPrimaryRequest(image_ctx, primary, on_finish);
+  }
+
+  IsPrimaryRequest(ImageCtxT *image_ctx, bool *primary, Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   * <start>
+   *    |
+   *    v
+   * GET_MIRROR_STATE * * * * *
+   *    |                     *
+   *    v                     *
+   * IS_TAG_OWNER * * * * * * * (error)
+   *    |                     *
+   *    v                     *
+   * <finish> < * * * * * * * *
+   *
+   * @endverbatim
+   */
+  ImageCtxT *m_image_ctx;
+  bool *m_primary;
+  Context *m_on_finish;
+
+  bufferlist m_out_bl;
+
+  void send_get_mirror_state();
+  void handle_get_mirror_state(int r);
+
+  void send_is_tag_owner();
+  void handle_is_tag_owner(int r);
+
+  void finish(int r);
+};
+
+} // namespace image_replayer
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::image_replayer::IsPrimaryRequest<librbd::ImageCtx>;
+
+#endif // RBD_MIRROR_IMAGE_REPLAYER_IS_PRIMARY_REQUEST_H