nix-super/src/libstore/dummy-store.cc

#include "store-api.hh"

namespace nix {

static std::string uriScheme = "dummy://";

struct DummyStore : public Store
{
    DummyStore(const Params & params)
        : Store(params)
    { }

    string getUri() override
    {
        return uriScheme;
    }

    void queryPathInfoUncached(const StorePath & path,
        Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override
    {
        callback(nullptr);
    }

    std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override
    { unsupported("queryPathFromHashPart"); }

    void addToStore(const ValidPathInfo & info, Source & source,
        RepairFlag repair, CheckSigsFlag checkSigs) override
    { unsupported("addToStore"); }

    StorePath addToStore(const string & name, const Path & srcPath,
        FileIngestionMethod method, HashType hashAlgo,
        PathFilter & filter, RepairFlag repair) override
    { unsupported("addToStore"); }

    StorePath addTextToStore(const string & name, const string & s,
        const StorePathSet & references, RepairFlag repair) override
    { unsupported("addTextToStore"); }

    void narFromPath(const StorePath & path, Sink & sink) override
    { unsupported("narFromPath"); }

    void ensurePath(const StorePath & path) override
    { unsupported("ensurePath"); }

    BuildResult buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
        BuildMode buildMode) override
    { unsupported("buildDerivation"); }
};

static RegisterStoreImplementation regStore([](
    const std::string & uri, const Store::Params & params)
    -> std::shared_ptr<Store>
{
    if (uri != uriScheme) return nullptr;
    return std::make_shared<DummyStore>(params);
});

}