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Merge pull request #5472 from NixOS/async-realisation-substitution

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async realisation substitution
This commit is contained in:
Eelco Dolstra 2021-11-16 12:54:20 +01:00 • committed by GitHub
commit 6463eaca14
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14 changed files with 204 additions and 65 deletions
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23
src/libstore/local-store.cc
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@ -1836,13 +1836,24 @@ 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(