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// -*- 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_H
#define CEPH_LIBRBD_IO_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;
namespace io {
struct AioCompletion;
template <typename ImageCtxT = librbd::ImageCtx>
class ObjectDispatch : public ObjectDispatchInterface {
public:
ObjectDispatch(ImageCtxT* image_ctx);
ObjectDispatchLayer get_dispatch_layer() const override {
return OBJECT_DISPATCH_LAYER_CORE;
}
void shut_down(Context* on_finish) override;
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) override;
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) 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, 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,
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) 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,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) override;
bool flush(
FlushSource flush_source, const ZTracer::Trace &parent_trace,
uint64_t* journal_tid, DispatchResult* dispatch_result,
Context** on_finish, Context* on_dispatched) override {
return false;
}
bool list_snaps(
uint64_t object_no, io::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) override;
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,
SnapshotSparseBufferlist* snapshot_sparse_bufferlist) override {
return 0;
}
private:
ImageCtxT* m_image_ctx;
};
} // namespace io
} // namespace librbd
extern template class librbd::io::ObjectDispatch<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_IO_OBJECT_DISPATCH_H
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