1 files changed, 133 insertions, 0 deletions
diff --git a/src/libstore/binary-cache-store.hh b/src/libstore/binary-cache-store.hh
new file mode 100644
index 000000000..5c2d0acfd
--- /dev/null
+++ b/src/libstore/binary-cache-store.hh
@@ -0,0 +1,133 @@
+#pragma once
+
+#include "crypto.hh"
+#include "store-api.hh"
+
+#include "pool.hh"
+
+#include <atomic>
+
+namespace nix {
+
+struct NarInfo;
+
+class BinaryCacheStore : public Store
+{
+public:
+
+    const Setting<std::string> compression{this, "xz", "compression", "NAR compression method ('xz', 'bzip2', or 'none')"};
+    const Setting<bool> writeNARListing{this, false, "write-nar-listing", "whether to write a JSON file listing the files in each NAR"};
+    const Setting<Path> secretKeyFile{this, "", "secret-key", "path to secret key used to sign the binary cache"};
+
+private:
+
+    std::unique_ptr<SecretKey> secretKey;
+
+protected:
+
+    BinaryCacheStore(const Params & params);
+
+    [[noreturn]] void notImpl();
+
+public:
+
+    virtual bool fileExists(const std::string & path) = 0;
+
+    virtual void upsertFile(const std::string & path,
+        const std::string & data,
+        const std::string & mimeType) = 0;
+
+    /* Return the contents of the specified file, or null if it
+       doesn't exist. */
+    virtual void getFile(const std::string & path,
+        std::function<void(std::shared_ptr<std::string>)> success,
+        std::function<void(std::exception_ptr exc)> failure) = 0;
+
+    std::shared_ptr<std::string> getFile(const std::string & path);
+
+protected:
+
+    bool wantMassQuery_ = false;
+    int priority = 50;
+
+public:
+
+    virtual void init();
+
+private:
+
+    std::string narMagic;
+
+    std::string narInfoFileFor(const Path & storePath);
+
+public:
+
+    bool isValidPathUncached(const Path & path) override;
+
+    PathSet queryAllValidPaths() override
+    { notImpl(); }
+
+    void queryPathInfoUncached(const Path & path,
+        std::function<void(std::shared_ptr<ValidPathInfo>)> success,
+        std::function<void(std::exception_ptr exc)> failure) override;
+
+    void queryReferrers(const Path & path,
+        PathSet & referrers) override
+    { notImpl(); }
+
+    PathSet queryDerivationOutputs(const Path & path) override
+    { notImpl(); }
+
+    StringSet queryDerivationOutputNames(const Path & path) override
+    { notImpl(); }
+
+    Path queryPathFromHashPart(const string & hashPart) override
+    { notImpl(); }
+
+    bool wantMassQuery() override { return wantMassQuery_; }
+
+    void addToStore(const ValidPathInfo & info, const ref<std::string> & nar,
+        bool repair, bool dontCheckSigs,
+        std::shared_ptr<FSAccessor> accessor) override;
+
+    Path addToStore(const string & name, const Path & srcPath,
+        bool recursive, HashType hashAlgo,
+        PathFilter & filter, bool repair) override;
+
+    Path addTextToStore(const string & name, const string & s,
+        const PathSet & references, bool repair) override;
+
+    void narFromPath(const Path & path, Sink & sink) override;
+
+    void buildPaths(const PathSet & paths, BuildMode buildMode) override
+    { notImpl(); }
+
+    BuildResult buildDerivation(const Path & drvPath, const BasicDerivation & drv,
+        BuildMode buildMode) override
+    { notImpl(); }
+
+    void ensurePath(const Path & path) override
+    { notImpl(); }
+
+    void addTempRoot(const Path & path) override
+    { notImpl(); }
+
+    void addIndirectRoot(const Path & path) override
+    { notImpl(); }
+
+    Roots findRoots() override
+    { notImpl(); }
+
+    void collectGarbage(const GCOptions & options, GCResults & results) override
+    { notImpl(); }
+
+    ref<FSAccessor> getFSAccessor() override;
+
+    void addSignatures(const Path & storePath, const StringSet & sigs) override
+    { notImpl(); }
+
+    std::shared_ptr<std::string> getBuildLog(const Path & path) override;
+
+};
+
+}