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Expose an async interface for queryRealisation

Browse source 
Doesn’t change much so far because everything is still using it
synchronously, but should allow the binary cache to fetch stuff in
parallel
This commit is contained in:
regnat 2021-10-27 11:36:51 +02:00
parent 5b2aa61f1b
commit 96670ed216
12 changed files with 138 additions and 55 deletions
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23
src/libstore/local-store.cc
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@ -1838,13 +1838,24 @@ std::optional<const Realisation> LocalStore::queryRealisation_(
return { res };
}
std::optional<const Realisation>
LocalStore::queryRealisation(const DrvOutput & id)
void LocalStore::queryRealisationUncached(const DrvOutput & id,
Callback<std::shared_ptr<const Realisation>> callback) noexcept
{
return retrySQLite<std::optional<const Realisation>>([&]() {
auto state(_state.lock());
return queryRealisation_(*state, id);
});
try {
auto maybeRealisation
= retrySQLite<std::optional<const Realisation>>([&]() {
auto state(_state.lock());
return queryRealisation_(*state, id);
});
if (maybeRealisation)
callback(
std::make_shared<const Realisation>(maybeRealisation.value()));
else
callback(nullptr);
} catch (...) {
callback.rethrow();
}
}
FixedOutputHash LocalStore::hashCAPath(