about summary refs log tree commit diff
path: root/src/libstore/binary-cache-store.hh
blob: 55bba627825c296d6b11a319f29261c4e0cbc1d4 (plain) (blame)
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
#pragma once

#include "crypto.hh"
#include "store-api.hh"

#include "lru-cache.hh"
#include "sync.hh"
#include "pool.hh"

#include <atomic>

namespace nix {

struct NarInfo;

class BinaryCacheStore : public Store
{
private:

    std::unique_ptr<SecretKey> secretKey;
    std::unique_ptr<PublicKeys> publicKeys;

    std::shared_ptr<Store> localStore;

    struct State
    {
        LRUCache<Path, ref<NarInfo>> narInfoCache{32 * 1024};
    };

    Sync<State> state;

protected:

    BinaryCacheStore(std::shared_ptr<Store> localStore, const Path & secretKeyFile);

    [[noreturn]] void notImpl();

    virtual bool fileExists(const std::string & path) = 0;

    virtual void upsertFile(const std::string & path, const std::string & data) = 0;

    /* Return the contents of the specified file, or null if it
       doesn't exist. */
    virtual std::shared_ptr<std::string> getFile(const std::string & path) = 0;

public:

    virtual void init();

    struct Stats
    {
        std::atomic<uint64_t> narInfoRead{0};
        std::atomic<uint64_t> narInfoReadAverted{0};
        std::atomic<uint64_t> narInfoWrite{0};
        std::atomic<uint64_t> narInfoCacheSize{0};
        std::atomic<uint64_t> narRead{0};
        std::atomic<uint64_t> narReadBytes{0};
        std::atomic<uint64_t> narReadCompressedBytes{0};
        std::atomic<uint64_t> narWrite{0};
        std::atomic<uint64_t> narWriteAverted{0};
        std::atomic<uint64_t> narWriteBytes{0};
        std::atomic<uint64_t> narWriteCompressedBytes{0};
        std::atomic<uint64_t> narWriteCompressionTimeMs{0};
    };

    const Stats & getStats();

private:

    Stats stats;

    std::string narMagic;

    std::string narInfoFileFor(const Path & storePath);

    void addToCache(const ValidPathInfo & info, const string & nar);

protected:

    NarInfo readNarInfo(const Path & storePath);

public:

    bool isValidPath(const Path & path) override;

    PathSet queryValidPaths(const PathSet & paths) override
    { notImpl(); }

    PathSet queryAllValidPaths() override
    { notImpl(); }

    ValidPathInfo queryPathInfo(const Path & path) override;

    Hash queryPathHash(const Path & path) override
    { notImpl(); }

    void queryReferrers(const Path & path,
        PathSet & referrers) override
    { notImpl(); }

    Path queryDeriver(const Path & path) override
    { return ""; }

    PathSet queryValidDerivers(const Path & path) override
    { return {}; }

    PathSet queryDerivationOutputs(const Path & path) override
    { notImpl(); }

    StringSet queryDerivationOutputNames(const Path & path) override
    { notImpl(); }

    Path queryPathFromHashPart(const string & hashPart) override
    { notImpl(); }

    PathSet querySubstitutablePaths(const PathSet & paths) override
    { return {}; }

    void querySubstitutablePathInfos(const PathSet & paths,
        SubstitutablePathInfos & infos) override;

    Path addToStore(const string & name, const Path & srcPath,
        bool recursive = true, HashType hashAlgo = htSHA256,
        PathFilter & filter = defaultPathFilter, bool repair = false) override;

    Path addTextToStore(const string & name, const string & s,
        const PathSet & references, bool repair = false) override;

    void narFromPath(const Path & path, Sink & sink) override;

    void exportPath(const Path & path, bool sign, Sink & sink) override;

    Paths importPaths(bool requireSignature, Source & source,
        std::shared_ptr<FSAccessor> accessor) override;

    Path importPath(Source & source, std::shared_ptr<FSAccessor> accessor);

    void buildPaths(const PathSet & paths, BuildMode buildMode = bmNormal) override;

    BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
        BuildMode buildMode = bmNormal) override
    { notImpl(); }

    void ensurePath(const Path & path) override;

    void addTempRoot(const Path & path) override
    { notImpl(); }

    void addIndirectRoot(const Path & path) override
    { notImpl(); }

    void syncWithGC() override
    { }

    Roots findRoots() override
    { notImpl(); }

    void collectGarbage(const GCOptions & options, GCResults & results) override
    { notImpl(); }

    void optimiseStore() override
    { }

    bool verifyStore(bool checkContents, bool repair) override
    { return true; }

    ref<FSAccessor> getFSAccessor() override;

    void addSignatures(const Path & storePath, const StringSet & sigs)
    { notImpl(); }

};

}