1 files changed, 123 insertions, 0 deletions
diff --git a/src/librbd/mirror/GetInfoRequest.h b/src/librbd/mirror/GetInfoRequest.h
new file mode 100644
index 000000000..dcc6da7da
--- /dev/null
+++ b/src/librbd/mirror/GetInfoRequest.h
@@ -0,0 +1,123 @@
+// -*- 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 "common/snap_types.h"
+#include "include/buffer.h"
+#include "include/common_fwd.h"
+#include "include/rados/librados.hpp"
+#include "librbd/Types.h"
+#include "librbd/mirror/Types.h"
+#include <string>
+
+struct Context;
+
+namespace cls { namespace rbd { struct MirrorImage; } }
+
+namespace librbd {
+
+struct ImageCtx;
+namespace asio { struct ContextWQ; }
+
+namespace mirror {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class GetInfoRequest {
+public:
+  static GetInfoRequest *create(librados::IoCtx &io_ctx,
+                                asio::ContextWQ *op_work_queue,
+                                const std::string &image_id,
+                                cls::rbd::MirrorImage *mirror_image,
+                                PromotionState *promotion_state,
+                                std::string* primary_mirror_uuid,
+                                Context *on_finish) {
+    return new GetInfoRequest(io_ctx, op_work_queue, image_id, mirror_image,
+                              promotion_state, primary_mirror_uuid, on_finish);
+  }
+  static GetInfoRequest *create(ImageCtxT &image_ctx,
+                                cls::rbd::MirrorImage *mirror_image,
+                                PromotionState *promotion_state,
+                                std::string* primary_mirror_uuid,
+                                Context *on_finish) {
+    return new GetInfoRequest(image_ctx, mirror_image, promotion_state,
+                              primary_mirror_uuid, on_finish);
+  }
+
+  GetInfoRequest(librados::IoCtx& io_ctx, asio::ContextWQ *op_work_queue,
+                 const std::string &image_id,
+                 cls::rbd::MirrorImage *mirror_image,
+                 PromotionState *promotion_state,
+                 std::string* primary_mirror_uuid, Context *on_finish);
+  GetInfoRequest(ImageCtxT &image_ctx, cls::rbd::MirrorImage *mirror_image,
+                 PromotionState *promotion_state,
+                 std::string* primary_mirror_uuid, Context *on_finish);
+
+  void send();
+
+private:
+  /**
+   * @verbatim
+   *
+   *                  <start>
+   *                     |
+   *                     v
+   *              GET_MIRROR_IMAGE
+   *                     |
+   *  (journal /--------/ \--------\ (snapshot
+   *   mode)   |                   |  mode)
+   *           v                   v
+   *  GET_JOURNAL_TAG_OWNER    GET_SNAPCONTEXT (skip if
+   *           |                   |            cached)
+   *           |                   v
+   *           |               GET_SNAPSHOTS (skip if
+   *           |                   |          cached)
+   *           \--------\ /--------/
+   *                     |
+   *                     v
+   *                  <finish>
+   *
+   * @endverbatim
+   */
+
+  ImageCtxT *m_image_ctx = nullptr;
+  librados::IoCtx &m_io_ctx;
+  asio::ContextWQ *m_op_work_queue;
+  std::string m_image_id;
+  cls::rbd::MirrorImage *m_mirror_image;
+  PromotionState *m_promotion_state;
+  std::string* m_primary_mirror_uuid;
+  Context *m_on_finish;
+
+  CephContext *m_cct;
+
+  bufferlist m_out_bl;
+  std::string m_mirror_uuid;
+  ::SnapContext m_snapc;
+
+  void get_mirror_image();
+  void handle_get_mirror_image(int r);
+
+  void get_journal_tag_owner();
+  void handle_get_journal_tag_owner(int r);
+
+  void get_snapcontext();
+  void handle_get_snapcontext(int r);
+
+  void get_snapshots();
+  void handle_get_snapshots(int r);
+
+  void finish(int r);
+
+  void calc_promotion_state(
+    const std::map<librados::snap_t, SnapInfo> &snap_info);
+};
+
+} // namespace mirror
+} // namespace librbd
+
+extern template class librbd::mirror::GetInfoRequest<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIRROR_GET_INFO_REQUEST_H
+