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Re-implement negative binary cache lookup caching

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This commit is contained in:
Eelco Dolstra 2016-06-20 17:39:05 +02:00
parent fffacd7c78
commit 74dd603495
2 changed files with 22 additions and 15 deletions
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27
src/libstore/nar-info-disk-cache.cc
View file

@ -20,7 +20,7 @@ create table if not exists BinaryCaches (
create table if not exists NARs ( create table if not exists NARs (
cache integer not null, cache integer not null,
hashPart text not null, hashPart text not null,
namePart text not null, namePart text,
url text, url text,
compression text, compression text,
fileHash text, fileHash text,
@ -31,6 +31,7 @@ create table if not exists NARs (
deriver text, deriver text,
sigs text, sigs text,
timestamp integer not null, timestamp integer not null,
present integer not null,
primary key (cache, hashPart), primary key (cache, hashPart),
foreign key (cache) references BinaryCaches(id) on delete cascade foreign key (cache) references BinaryCaches(id) on delete cascade
); );
@ -64,7 +65,7 @@ public:
struct State struct State
{ {
SQLite db; SQLite db;
SQLiteStmt insertCache, queryCache, insertNAR, queryNAR, insertNARExistence, queryNARExistence; SQLiteStmt insertCache, queryCache, insertNAR, insertMissingNAR, queryNAR;
std::map<std::string, Cache> caches; std::map<std::string, Cache> caches;
}; };
@ -74,7 +75,7 @@ public:
{ {
auto state(_state.lock()); auto state(_state.lock());
Path dbPath = getCacheDir() + "/nix/binary-cache-v4.sqlite"; Path dbPath = getCacheDir() + "/nix/binary-cache-v5.sqlite";
createDirs(dirOf(dbPath)); createDirs(dirOf(dbPath));
if (sqlite3_open_v2(dbPath.c_str(), &state->db.db, if (sqlite3_open_v2(dbPath.c_str(), &state->db.db,
@ -101,16 +102,13 @@ public:
state->insertNAR.create(state->db, state->insertNAR.create(state->db,
"insert or replace into NARs(cache, hashPart, namePart, url, compression, fileHash, fileSize, narHash, " "insert or replace into NARs(cache, hashPart, namePart, url, compression, fileHash, fileSize, narHash, "
"narSize, refs, deriver, sigs, timestamp) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"); "narSize, refs, deriver, sigs, timestamp, present) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 1)");
state->insertMissingNAR.create(state->db,
"insert or replace into NARs(cache, hashPart, timestamp, present) values (?, ?, ?, 0)");
state->queryNAR.create(state->db, state->queryNAR.create(state->db,
"select * from NARs where cache = ? and hashPart = ?"); "select * from NARs where cache = ? and hashPart = ?");
state->insertNARExistence.create(state->db,
"insert or replace into NARExistence(cache, storePath, exist, timestamp) values (?, ?, ?, ?)");
state->queryNARExistence.create(state->db,
"select exist, timestamp from NARExistence where cache = ? and storePath = ?");
} }
Cache & getCache(State & state, const std::string & uri) Cache & getCache(State & state, const std::string & uri)
@ -165,6 +163,9 @@ public:
// FIXME: check NARExistence // FIXME: check NARExistence
return {oUnknown, 0}; return {oUnknown, 0};
if (!queryNAR.getInt(13))
return {oInvalid, 0};
auto narInfo = make_ref<NarInfo>(); auto narInfo = make_ref<NarInfo>();
// FIXME: implement TTL. // FIXME: implement TTL.
@ -219,8 +220,10 @@ public:
(time(0)).exec(); (time(0)).exec();
} else { } else {
// not implemented state->insertMissingNAR.use()
abort(); (cache.id)
(hashPart)
(time(0)).exec();
} }
} }
}; };

10
src/libstore/store-api.cc
View file

@ -265,9 +265,13 @@ bool Store::isValidPath(const Path & storePath)
} }
} }
return isValidPathUncached(storePath); bool valid = isValidPathUncached(storePath);
// FIXME: insert result into NARExistence table of diskCache. if (diskCache && !valid)
// FIXME: handle valid = true case.
diskCache->upsertNarInfo(getUri(), hashPart, 0);
return valid;
} }
@ -302,7 +306,7 @@ ref<const ValidPathInfo> Store::queryPathInfo(const Path & storePath)
auto info = queryPathInfoUncached(storePath); auto info = queryPathInfoUncached(storePath);
if (diskCache && info) if (diskCache)
diskCache->upsertNarInfo(getUri(), hashPart, info); diskCache->upsertNarInfo(getUri(), hashPart, info);
{ {