lix/src/libstore/nar-info-disk-cache.hh

29 lines
673 B
C++
Raw Normal View History

#pragma once
#include "ref.hh"
#include "nar-info.hh"
namespace nix {
class NarInfoDiskCache
{
public:
typedef enum { oValid, oInvalid, oUnknown } Outcome;
virtual void createCache(const std::string & uri) = 0;
virtual bool cacheExists(const std::string & uri) = 0;
virtual std::pair<Outcome, std::shared_ptr<NarInfo>> lookupNarInfo(
const std::string & uri, const Path & storePath) = 0;
virtual void upsertNarInfo(
const std::string & uri, std::shared_ptr<ValidPathInfo> narInfo) = 0;
};
/* Return a singleton cache object that can be used concurrently by
multiple threads. */
ref<NarInfoDiskCache> getNarInfoDiskCache();
}