1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// -*- mode:c++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef CEPH_LIBRBD_MIGRATION_RAW_SNAPSHOT_H
#define CEPH_LIBRBD_MIGRATION_RAW_SNAPSHOT_H
#include "include/buffer_fwd.h"
#include "include/int_types.h"
#include "common/zipkin_trace.h"
#include "librbd/Types.h"
#include "librbd/io/Types.h"
#include "librbd/migration/SnapshotInterface.h"
#include "json_spirit/json_spirit.h"
#include <memory>
namespace librbd {
struct ImageCtx;
namespace migration {
template <typename> struct SourceSpecBuilder;
struct StreamInterface;
template <typename ImageCtxT>
class RawSnapshot : public SnapshotInterface {
public:
static RawSnapshot* create(
ImageCtx* image_ctx, const json_spirit::mObject& json_object,
const SourceSpecBuilder<ImageCtxT>* source_spec_builder, uint64_t index) {
return new RawSnapshot(image_ctx, json_object, source_spec_builder, index);
}
RawSnapshot(ImageCtxT* image_ctx, const json_spirit::mObject& json_object,
const SourceSpecBuilder<ImageCtxT>* source_spec_builder,
uint64_t index);
RawSnapshot(const RawSnapshot&) = delete;
RawSnapshot& operator=(const RawSnapshot&) = delete;
void open(SnapshotInterface* previous_snapshot, Context* on_finish) override;
void close(Context* on_finish) override;
const SnapInfo& get_snap_info() const override {
return m_snap_info;
}
void read(io::AioCompletion* aio_comp, io::Extents&& image_extents,
io::ReadResult&& read_result, int op_flags, int read_flags,
const ZTracer::Trace &parent_trace) override;
void list_snap(io::Extents&& image_extents, int list_snaps_flags,
io::SparseExtents* sparse_extents,
const ZTracer::Trace &parent_trace,
Context* on_finish) override;
private:
struct OpenRequest;
ImageCtxT* m_image_ctx;
json_spirit::mObject m_json_object;
const SourceSpecBuilder<ImageCtxT>* m_source_spec_builder;
uint64_t m_index = 0;
SnapInfo m_snap_info;
std::shared_ptr<StreamInterface> m_stream;
};
} // namespace migration
} // namespace librbd
extern template class librbd::migration::RawSnapshot<librbd::ImageCtx>;
#endif // CEPH_LIBRBD_MIGRATION_RAW_SNAPSHOT_H
|
