blob: 4d57da7f302c9cc9275143a2dc6c1636c4476ff2 (
plain)
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
|
// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef INCLUDED_SRC_BUILDTOOL_TREE_STRUCTURE_TREE_STRUCTURE_CACHE_HPP
#define INCLUDED_SRC_BUILDTOOL_TREE_STRUCTURE_TREE_STRUCTURE_CACHE_HPP
#include <cstddef>
#include <optional>
#include "gsl/gsl"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/file_system/file_storage.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/buildtool/storage/config.hpp"
class TreeStructureCache final {
public:
explicit TreeStructureCache(
gsl::not_null<StorageConfig const*> const& storage_config) noexcept;
/// \brief Obtain the digest describing the tree structure of a key tree.
/// Can trigger deep uplinking of referenced objects (both key and value).
[[nodiscard]] auto Get(ArtifactDigest const& key) const noexcept
-> std::optional<ArtifactDigest>;
/// \brief Set coupling between key and value digest signalizing that the
/// value digest contains the tree structure of a key digest. Both key and
/// value are expected to be in the storage. Can trigger deep uplinking of
/// objects (both key and value).
/// \return True if the cache contains the key-value coupling. Fails if
/// there is the key in the storage, but it refers to another value. Fails
/// if key or value aren't present in the storage.
[[nodiscard]] auto Set(ArtifactDigest const& key,
ArtifactDigest const& value) const noexcept -> bool;
private:
StorageConfig const& storage_config_;
FileStorage<ObjectType::File, StoreMode::FirstWins, false> file_storage_;
bool uplink_;
explicit TreeStructureCache(
gsl::not_null<StorageConfig const*> const& storage_config,
std::size_t generation,
bool uplink) noexcept;
[[nodiscard]] auto LocalUplinkObject(
ArtifactDigest const& key,
TreeStructureCache const& latest) const noexcept -> bool;
};
#endif // INCLUDED_SRC_BUILDTOOL_TREE_STRUCTURE_TREE_STRUCTURE_CACHE_HPP
|
