1 files changed, 67 insertions, 0 deletions
diff --git a/src/librbd/MirroringWatcher.h b/src/librbd/MirroringWatcher.h
new file mode 100644
index 000000000..e13762e9b
--- /dev/null
+++ b/src/librbd/MirroringWatcher.h
@@ -0,0 +1,67 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_MIRRORING_WATCHER_H
+#define CEPH_LIBRBD_MIRRORING_WATCHER_H
+
+#include "include/int_types.h"
+#include "include/rados/librados_fwd.hpp"
+#include "cls/rbd/cls_rbd_types.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/Watcher.h"
+#include "librbd/mirroring_watcher/Types.h"
+
+namespace librbd {
+
+namespace asio { struct ContextWQ; }
+namespace watcher {
+namespace util {
+template <typename> struct HandlePayloadVisitor;
+}
+}
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class MirroringWatcher : public Watcher {
+  friend struct watcher::util::HandlePayloadVisitor<MirroringWatcher<ImageCtxT>>;
+
+public:
+  MirroringWatcher(librados::IoCtx &io_ctx, asio::ContextWQ *work_queue);
+
+  static int notify_mode_updated(librados::IoCtx &io_ctx,
+                                 cls::rbd::MirrorMode mirror_mode);
+  static void notify_mode_updated(librados::IoCtx &io_ctx,
+                                  cls::rbd::MirrorMode mirror_mode,
+                                  Context *on_finish);
+
+  static int notify_image_updated(librados::IoCtx &io_ctx,
+                                  cls::rbd::MirrorImageState mirror_image_state,
+                                  const std::string &image_id,
+                                  const std::string &global_image_id);
+  static void notify_image_updated(librados::IoCtx &io_ctx,
+                                   cls::rbd::MirrorImageState mirror_image_state,
+                                   const std::string &image_id,
+                                   const std::string &global_image_id,
+                                   Context *on_finish);
+
+  virtual void handle_mode_updated(cls::rbd::MirrorMode mirror_mode) = 0;
+  virtual void handle_image_updated(cls::rbd::MirrorImageState state,
+                                    const std::string &image_id,
+                                    const std::string &global_image_id) = 0;
+
+private:
+  bool handle_payload(const mirroring_watcher::ModeUpdatedPayload &payload,
+                      Context *on_notify_ack);
+  bool handle_payload(const mirroring_watcher::ImageUpdatedPayload &payload,
+                      Context *on_notify_ack);
+  bool handle_payload(const mirroring_watcher::UnknownPayload &payload,
+                      Context *on_notify_ack);
+
+  void handle_notify(uint64_t notify_id, uint64_t handle,
+                     uint64_t notifier_id, bufferlist &bl) override;
+};
+
+} // namespace librbd
+
+extern template class librbd::MirroringWatcher<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_MIRRORING_WATCHER_H