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Fix the detection of already built drv outputs

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PRs #4370 and #4348 had a bad interaction in that the second broke the fist
one in a not trivial way.

The issue was that since #4348 the logic for detecting whether a
derivation output is already built requires some logic that was specific
to the `LocalStore`.

It happens though that most of this logic could be upstreamed to any `Store`,
which is what this commit does.
This commit is contained in:
regnat 2020-12-17 11:35:24 +01:00
parent ae3c3e3bb2
commit 4d45839499
6 changed files with 78 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/libstore/store-api.cc
View file

@ -366,6 +366,29 @@ bool Store::PathInfoCacheValue::isKnownNow()
return std::chrono::steady_clock::now() < time_point + ttl;
}
std::map<std::string, std::optional<StorePath>> Store::queryDerivationOutputMapNoResolve(const StorePath & path)
{
std::map<std::string, std::optional<StorePath>> outputs;
auto drv = readInvalidDerivation(path);
for (auto& [outputName, output] : drv.outputsAndOptPaths(*this)) {
outputs.emplace(outputName, output.second);
}
return outputs;
}
std::map<std::string, std::optional<StorePath>> Store::queryPartialDerivationOutputMap(const StorePath & path)
{
if (settings.isExperimentalFeatureEnabled("ca-derivations")) {
auto resolvedDrv = Derivation::tryResolve(*this, path);
if (resolvedDrv) {
auto resolvedDrvPath = writeDerivation(*this, *resolvedDrv, NoRepair, true);
if (isValidPath(resolvedDrvPath))
return queryDerivationOutputMapNoResolve(resolvedDrvPath);
}
}
return queryDerivationOutputMapNoResolve(path);
}
OutputPathMap Store::queryDerivationOutputMap(const StorePath & path) {
auto resp = queryPartialDerivationOutputMap(path);
OutputPathMap result;
@ -730,14 +753,14 @@ void Store::buildPaths(const std::vector<StorePathWithOutputs> & paths, BuildMod
for (auto & path : paths) {
if (path.path.isDerivation()) {
if (settings.isExperimentalFeatureEnabled("ca-derivations")) {
for (auto & outputName : path.outputs) {
if (!queryRealisation({path.path, outputName}))
unsupported("buildPaths");
}
} else
unsupported("buildPaths");
auto outPaths = queryPartialDerivationOutputMap(path.path);
for (auto & outputName : path.outputs) {
auto currentOutputPathIter = outPaths.find(outputName);
if (currentOutputPathIter == outPaths.end() ||
!currentOutputPathIter->second ||
!isValidPath(*currentOutputPathIter->second))
unsupported("buildPaths");
}
} else
paths2.insert(path.path);
}