ceph/src/librbd/io/ObjectDispatchInterface.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H
   5 #define CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H
   6
   7 #include "include/int_types.h"
   8 #include "include/buffer.h"
   9 #include "include/rados/librados.hpp"
  10 #include "common/snap_types.h"
  11 #include "common/zipkin_trace.h"
  12 #include "librbd/io/Types.h"
  13
  14 struct Context;
  15 struct RWLock;
  16
  17 namespace librbd {
  18 namespace io {
  19
  20 struct AioCompletion;
  21
  22 struct ObjectDispatchInterface {
  23   virtual ~ObjectDispatchInterface() {
  24   }
  25
  26   virtual ObjectDispatchLayer get_object_dispatch_layer() const = 0;
  27
  28   virtual void shut_down(Context* on_finish) = 0;
  29
  30   virtual bool read(
  31       uint64_t object_no, uint64_t object_off, uint64_t object_len,
  32       librados::snap_t snap_id, int op_flags,const ZTracer::Trace &parent_trace,
  33       ceph::bufferlist* read_data, ExtentMap* extent_map,
  34       int* object_dispatch_flags, DispatchResult* dispatch_result,
  35       Context** on_finish, Context* on_dispatched) = 0;
  36
  37   virtual bool discard(
  38       uint64_t object_no, uint64_t object_off, uint64_t object_len,
  39       const ::SnapContext &snapc, int discard_flags,
  40       const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
  41       uint64_t* journal_tid, DispatchResult* dispatch_result,
  42       Context**on_finish, Context* on_dispatched) = 0;
  43
  44   virtual bool write(
  45       uint64_t object_no, uint64_t object_off, ceph::bufferlist&& data,
  46       const ::SnapContext &snapc, int op_flags,
  47       const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
  48       uint64_t* journal_tid, DispatchResult* dispatch_result,
  49       Context**on_finish, Context* on_dispatched) = 0;
  50
  51   virtual bool write_same(
  52       uint64_t object_no, uint64_t object_off, uint64_t object_len,
  53       LightweightBufferExtents&& buffer_extents, ceph::bufferlist&& data,
  54       const ::SnapContext &snapc, int op_flags,
  55       const ZTracer::Trace &parent_trace, int* object_dispatch_flags,
  56       uint64_t* journal_tid, DispatchResult* dispatch_result,
  57       Context**on_finish, Context* on_dispatched) = 0;
  58
  59   virtual bool compare_and_write(
  60       uint64_t object_no, uint64_t object_off, ceph::bufferlist&& cmp_data,
  61       ceph::bufferlist&& write_data, const ::SnapContext &snapc, int op_flags,
  62       const ZTracer::Trace &parent_trace, uint64_t* mismatch_offset,
  63       int* object_dispatch_flags, uint64_t* journal_tid,
  64       DispatchResult* dispatch_result, Context** on_finish,
  65       Context* on_dispatched) = 0;
  66
  67   virtual bool flush(
  68       FlushSource flush_source, const ZTracer::Trace &parent_trace,
  69       uint64_t* journal_tid, DispatchResult* dispatch_result,
  70       Context** on_finish, Context* on_dispatched) = 0;
  71
  72   virtual bool invalidate_cache(Context* on_finish) = 0;
  73   virtual bool reset_existence_cache(Context* on_finish) = 0;
  74
  75   virtual void extent_overwritten(
  76       uint64_t object_no, uint64_t object_off, uint64_t object_len,
  77       uint64_t journal_tid, uint64_t new_journal_tid) = 0;
  78
  79 };
  80
  81 } // namespace io
  82 } // namespace librbd
  83
  84 #endif // CEPH_LIBRBD_IO_OBJECT_DISPATCH_INTERFACE_H