1 files changed, 84 insertions, 0 deletions
diff --git a/src/librbd/plugin/Api.h b/src/librbd/plugin/Api.h
new file mode 100644
index 000000000..04f77e5c3
--- /dev/null
+++ b/src/librbd/plugin/Api.h
@@ -0,0 +1,84 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_PLUGIN_API_H
+#define CEPH_LIBRBD_PLUGIN_API_H
+
+#include "common/Timer.h"
+#include "common/ceph_mutex.h"
+#include "include/common_fwd.h"
+#include "include/int_types.h"
+#include "include/rados/librados.hpp"
+#include "librbd/io/Types.h"
+#include "librbd/io/ReadResult.h"
+
+namespace ZTracer { struct Trace; }
+
+namespace librbd {
+
+namespace io {
+class AioCompletion;
+class C_AioRequest;
+}
+
+struct ImageCtx;
+
+namespace plugin {
+
+template <typename ImageCtxT>
+struct Api {
+  using Extents = librbd::io::Extents;
+
+  Api() {}
+  virtual ~Api() {}
+
+  virtual void read_parent(
+      ImageCtxT *image_ctx, uint64_t object_no, io::ReadExtents* extents,
+      librados::snap_t snap_id, const ZTracer::Trace &trace,
+      Context* on_finish);
+
+  virtual void execute_image_metadata_set(
+      ImageCtxT *image_ctx,
+      const std::string &key,
+      const std::string &value,
+      Context *on_finish);
+
+  virtual void execute_image_metadata_remove(
+      ImageCtxT *image_ctx,
+      const std::string &key,
+      Context *on_finish);
+
+  virtual void get_image_timer_instance(
+      CephContext *cct, SafeTimer **timer,
+      ceph::mutex **timer_lock);
+
+  virtual bool test_image_features(
+      ImageCtxT *image_ctx,
+      uint64_t features);
+
+  virtual void update_aio_comp(
+      io::AioCompletion* aio_comp,
+      uint32_t request_count,
+      io::ReadResult& read_result,
+      io::Extents &image_extents);
+
+  virtual void update_aio_comp(
+      io::AioCompletion* aio_comp,
+      uint32_t request_count);
+
+  virtual io::ReadResult::C_ImageReadRequest* create_image_read_request(
+      io::AioCompletion* aio_comp, uint64_t buffer_offset,
+      const Extents& image_extents);
+
+  virtual io::C_AioRequest* create_aio_request(io::AioCompletion* aio_comp);
+
+private:
+  void start_in_flight_io(io::AioCompletion* aio_comp);
+};
+
+} // namespace plugin
+} // namespace librbd
+
+extern template class librbd::plugin::Api<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_PLUGIN_API_H