1 files changed, 124 insertions, 0 deletions
diff --git a/src/librbd/journal/ObjectDispatch.h b/src/librbd/journal/ObjectDispatch.h
new file mode 100644
index 000000000..45e4773cc
--- /dev/null
+++ b/src/librbd/journal/ObjectDispatch.h
@@ -0,0 +1,124 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_JOURNAL_OBJECT_DISPATCH_H
+#define CEPH_LIBRBD_JOURNAL_OBJECT_DISPATCH_H
+
+#include "include/int_types.h"
+#include "include/buffer.h"
+#include "include/rados/librados.hpp"
+#include "common/zipkin_trace.h"
+#include "librbd/io/Types.h"
+#include "librbd/io/ObjectDispatchInterface.h"
+
+struct Context;
+
+namespace librbd {
+
+struct ImageCtx;
+template <typename> class Journal;
+
+namespace journal {
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class ObjectDispatch : public io::ObjectDispatchInterface {
+public:
+  static ObjectDispatch* create(ImageCtxT* image_ctx,
+                                Journal<ImageCtxT>* journal) {
+    return new ObjectDispatch(image_ctx, journal);
+  }
+
+  ObjectDispatch(ImageCtxT* image_ctx, Journal<ImageCtxT>* journal);
+
+  io::ObjectDispatchLayer get_dispatch_layer() const override {
+    return io::OBJECT_DISPATCH_LAYER_JOURNAL;
+  }
+
+  void shut_down(Context* on_finish) override;
+
+  bool read(
+      uint64_t object_no, io::ReadExtents* extents, IOContext io_context,
+      int op_flags, int read_flags, const ZTracer::Trace &parent_trace,
+      uint64_t* version, int* object_dispatch_flags,
+      io::DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) {
+    return false;
+  }
+
+  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, io::DispatchResult* dispatch_result,
+      Context** on_finish, Context* on_dispatched) override;
+
+  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, io::DispatchResult* dispatch_result,
+      Context** on_finish, Context* on_dispatched) override;
+
+  bool write_same(
+      uint64_t object_no, uint64_t object_off, uint64_t object_len,
+      io::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, io::DispatchResult* dispatch_result,
+      Context** on_finish, Context* on_dispatched) override;
+
+  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,
+      io::DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) override;
+
+  bool flush(
+      io::FlushSource flush_source, const ZTracer::Trace &parent_trace,
+      uint64_t* journal_tid, io::DispatchResult* dispatch_result,
+      Context** on_finish, Context* on_dispatched) override;
+
+  bool list_snaps(
+      uint64_t object_no, io::Extents&& extents, io::SnapIds&& snap_ids,
+      int list_snap_flags, const ZTracer::Trace &parent_trace,
+      io::SnapshotDelta* snapshot_delta, int* object_dispatch_flags,
+      io::DispatchResult* dispatch_result, Context** on_finish,
+      Context* on_dispatched) override {
+    return false;
+  }
+
+  bool invalidate_cache(Context* on_finish) override {
+    return false;
+  }
+  bool reset_existence_cache(Context* on_finish) override {
+    return false;
+  }
+
+  void extent_overwritten(
+      uint64_t object_no, uint64_t object_off, uint64_t object_len,
+      uint64_t journal_tid, uint64_t new_journal_tid) override;
+
+  int prepare_copyup(
+      uint64_t object_no,
+      io::SnapshotSparseBufferlist* snapshot_sparse_bufferlist) override {
+    return 0;
+  }
+
+private:
+  ImageCtxT* m_image_ctx;
+  Journal<ImageCtxT>* m_journal;
+
+  void wait_or_flush_event(uint64_t journal_tid, int object_dispatch_flags,
+                           Context* on_dispatched);
+
+};
+
+} // namespace journal
+} // namespace librbd
+
+extern template class librbd::journal::ObjectDispatch<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_JOURNAL_OBJECT_DISPATCH_H