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#pragma once
#include <atomic>
#include "libstore/crypto.hh"
#include "libstore/store-api.hh"
#include "libutil/pool.hh"
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"};
const Setting<Path> localNarCache{this, "", "local-nar-cache",
"path to a local cache of NARs"};
const Setting<bool> parallelCompression{
this, false, "parallel-compression",
"enable multi-threading compression, available for xz only currently"};
private:
std::unique_ptr<SecretKey> secretKey;
protected:
BinaryCacheStore(const Params& params);
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;
/* Note: subclasses must implement at least one of the two
following getFile() methods. */
/* Dump the contents of the specified file to a sink. */
virtual void getFile(const std::string& path, Sink& sink);
/* Fetch the specified file and call the specified callback with
the result. A subclass may implement this asynchronously. */
virtual void getFile(
const std::string& path,
Callback<std::shared_ptr<std::string>> callback) noexcept;
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);
void writeNarInfo(const ref<NarInfo>& narInfo);
public:
bool isValidPathUncached(const Path& path) override;
void queryPathInfoUncached(
const Path& path,
Callback<std::shared_ptr<ValidPathInfo>> callback) noexcept override;
Path queryPathFromHashPart(const std::string& hashPart) override {
unsupported("queryPathFromHashPart");
}
bool wantMassQuery() override { return wantMassQuery_; }
void addToStore(const ValidPathInfo& info, const ref<std::string>& nar,
RepairFlag repair, CheckSigsFlag checkSigs,
std::shared_ptr<FSAccessor> accessor) override;
Path addToStore(const std::string& name, const Path& srcPath, bool recursive,
HashType hashAlgo, PathFilter& filter,
RepairFlag repair) override;
Path addTextToStore(const std::string& name, const std::string& s,
const PathSet& references, RepairFlag repair) override;
void narFromPath(const Path& path, Sink& sink) override;
BuildResult buildDerivation(std::ostream& /*log_sink*/, const Path& drvPath,
const BasicDerivation& drv,
BuildMode buildMode) override {
unsupported("buildDerivation");
}
void ensurePath(const Path& path) override { unsupported("ensurePath"); }
ref<FSAccessor> getFSAccessor() override;
void addSignatures(const Path& storePath, const StringSet& sigs) override;
std::shared_ptr<std::string> getBuildLog(const Path& path) override;
int getPriority() override { return priority; }
};
MakeError(NoSuchBinaryCacheFile, Error);
} // namespace nix
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