1 files changed, 86 insertions, 0 deletions
diff --git a/src/librbd/io/ObjectDispatchInterface.h b/src/librbd/io/ObjectDispatchInterface.h
new file mode 100644
index 00000000..fddf0db1
--- /dev/null
+++ b/src/librbd/io/ObjectDispatchInterface.h
@@ -0,0 +1,86 @@
+// -*- 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/snap_types.h"
+#include "common/zipkin_trace.h"
+#include "librbd/io/Types.h"
+
+struct Context;
+struct RWLock;
+
+namespace librbd {
+namespace io {
+
+struct AioCompletion;
+
+struct ObjectDispatchInterface {
+  virtual ~ObjectDispatchInterface() {
+  }
+
+  virtual ObjectDispatchLayer get_object_dispatch_layer() const = 0;
+
+  virtual void shut_down(Context* on_finish) = 0;
+
+  virtual bool read(
+      const std::string &oid, uint64_t object_no, uint64_t object_off,
+      uint64_t object_len, librados::snap_t snap_id, int op_flags,
+      const ZTracer::Trace &parent_trace, ceph::bufferlist* read_data,
+      ExtentMap* extent_map, int* object_dispatch_flags,
+      DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) = 0;
+
+  virtual bool discard(
+      const std::string &oid, uint64_t object_no, uint64_t object_off,
+      uint64_t object_len, const ::SnapContext &snapc, 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(
+      const std::string &oid, uint64_t object_no, uint64_t object_off,
+      ceph::bufferlist&& data, const ::SnapContext &snapc, 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 write_same(
+      const std::string &oid, uint64_t object_no, uint64_t object_off,
+      uint64_t object_len, Extents&& buffer_extents, ceph::bufferlist&& data,
+      const ::SnapContext &snapc, 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(
+      const std::string &oid, uint64_t object_no, uint64_t object_off,
+      ceph::bufferlist&& cmp_data, ceph::bufferlist&& write_data,
+      const ::SnapContext &snapc, 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,
+      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;
+
+};
+
+} // namespace io
+} // namespace librbd
+
+#endif // CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H