lix-project/lix
20
57
Fork 31
Code Issues 350 Code Review (Gerrit) Projects 3 Releases Wiki Activity

Make the realisation fetching from binary caches async

Browse source 
That way we can fetch several realisations from the same cache in
parallel
This commit is contained in:
regnat 2021-10-27 11:50:57 +02:00
parent 96670ed216
commit fbc70034b3
1 changed files with 18 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
src/libstore/binary-cache-store.cc
View file

@ -441,17 +441,26 @@ void BinaryCacheStore::queryRealisationUncached(const DrvOutput & id,
Callback<std::shared_ptr<const Realisation>> callback) noexcept
{
auto outputInfoFilePath = realisationsPrefix + "/" + id.to_string() + ".doi";
auto rawOutputInfo = getFile(outputInfoFilePath);
if (rawOutputInfo) {
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
Callback<std::shared_ptr<std::string>> newCallback = {
[=](std::future<std::shared_ptr<std::string>> fut) {
try {
auto data = fut.get();
if (!data) return (*callbackPtr)(nullptr);
auto realisation = Realisation::fromJSON(
nlohmann::json::parse(*rawOutputInfo), outputInfoFilePath);
callback(std::make_shared<const Realisation>(realisation));
return;
} else {
callback(nullptr);
nlohmann::json::parse(*data), outputInfoFilePath);
return (*callbackPtr)(std::make_shared<const Realisation>(realisation));
} catch (...) {
callbackPtr->rethrow();
}
}
};
getFile(outputInfoFilePath, std::move(newCallback));
}
void BinaryCacheStore::registerDrvOutput(const Realisation& info) {
if (diskCache)