1 files changed, 102 insertions, 0 deletions
diff --git a/src/librbd/io/ObjectDispatchInterface.h b/src/librbd/io/ObjectDispatchInterface.h
new file mode 100644
index 000000000..2e9dd1300
--- /dev/null
+++ b/src/librbd/io/ObjectDispatchInterface.h
@@ -0,0 +1,102 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H
+#define CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/rados/librados.hpp"
+#include "common/zipkin_trace.h"
+#include "librbd/Types.h"
+#include "librbd/io/Types.h"
+
+struct Context;
+struct RWLock;
+
+namespace librbd {
+namespace io {
+
+struct AioCompletion;
+struct ObjectDispatchInterface;
+struct ObjectDispatchSpec;
+
+struct ObjectDispatchInterface {
+  typedef ObjectDispatchInterface Dispatch;
+  typedef ObjectDispatchLayer DispatchLayer;
+  typedef ObjectDispatchSpec DispatchSpec;
+
+  virtual ~ObjectDispatchInterface() {
+  }
+
+  virtual ObjectDispatchLayer get_dispatch_layer() const = 0;
+
+  virtual void shut_down(Context* on_finish) = 0;
+
+  virtual bool read(
+      uint64_t object_no, ReadExtents* extents, IOContext io_context,
+      int op_flags, int read_flags, const ZTracer::Trace &parent_trace,
+      uint64_t* version, int* object_dispatch_flags,
+      DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) = 0;
+
+  virtual bool discard(
+      uint64_t object_no, uint64_t object_off, uint64_t object_len,
+      IOContext io_context, int discard_flags,
+      const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
+      uint64_t* journal_tid, DispatchResult* dispatch_result,
+      Context**on_finish, Context* on_dispatched) = 0;
+
+  virtual bool write(
+      uint64_t object_no, uint64_t object_off, ceph::bufferlist&& data,
+      IOContext io_context, int op_flags, int write_flags,
+      std::optional<uint64_t> assert_version,
+      const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
+      uint64_t* journal_tid, DispatchResult* dispatch_result,
+      Context**on_finish, Context* on_dispatched) = 0;
+
+  virtual bool write_same(
+      uint64_t object_no, uint64_t object_off, uint64_t object_len,
+      LightweightBufferExtents&& buffer_extents, ceph::bufferlist&& data,
+      IOContext io_context, int op_flags, const ZTracer::Trace &parent_trace,
+      int* object_dispatch_flags, uint64_t* journal_tid,
+      DispatchResult* dispatch_result, Context**on_finish,
+      Context* on_dispatched) = 0;
+
+  virtual bool compare_and_write(
+      uint64_t object_no, uint64_t object_off, ceph::bufferlist&& cmp_data,
+      ceph::bufferlist&& write_data, IOContext io_context, int op_flags,
+      const ZTracer::Trace &parent_trace, uint64_t* mismatch_offset,
+      int* object_dispatch_flags, uint64_t* journal_tid,
+      DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) = 0;
+
+  virtual bool flush(
+      FlushSource flush_source, const ZTracer::Trace &parent_trace,
+      uint64_t* journal_tid, DispatchResult* dispatch_result,
+      Context** on_finish, Context* on_dispatched) = 0;
+
+  virtual bool list_snaps(
+      uint64_t object_no, Extents&& extents, SnapIds&& snap_ids,
+      int list_snap_flags, const ZTracer::Trace &parent_trace,
+      SnapshotDelta* snapshot_delta, int* object_dispatch_flags,
+      DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) = 0;
+
+  virtual bool invalidate_cache(Context* on_finish) = 0;
+  virtual bool reset_existence_cache(Context* on_finish) = 0;
+
+  virtual void extent_overwritten(
+      uint64_t object_no, uint64_t object_off, uint64_t object_len,
+      uint64_t journal_tid, uint64_t new_journal_tid) = 0;
+
+  virtual int prepare_copyup(
+      uint64_t object_no,
+      SnapshotSparseBufferlist* snapshot_sparse_bufferlist) = 0;
+
+};
+
+} // namespace io
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H