From 451ebf24ce532f8d59f929efd486104fcebf1aa6 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Wed, 20 Apr 2016 14:12:38 +0200 Subject: Cache path info lookups in SQLite This re-implements the binary cache database in C++, allowing it to be used by other Store backends, in particular the S3 backend. --- src/libstore/nar-info-disk-cache.hh | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/libstore/nar-info-disk-cache.hh (limited to 'src/libstore/nar-info-disk-cache.hh') diff --git a/src/libstore/nar-info-disk-cache.hh b/src/libstore/nar-info-disk-cache.hh new file mode 100644 index 000000000000..ee1aafc63a5d --- /dev/null +++ b/src/libstore/nar-info-disk-cache.hh @@ -0,0 +1,28 @@ +#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> lookupNarInfo( + const std::string & uri, const Path & storePath) = 0; + + virtual void upsertNarInfo( + const std::string & uri, std::shared_ptr narInfo) = 0; +}; + +/* Return a singleton cache object that can be used concurrently by + multiple threads. */ +ref getNarInfoDiskCache(); + +} -- cgit 1.4.1