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Liberate checkDerivationOutputs from LocalStore

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Make it instead a method on `Derivation` that can work with any store.
We will need this for a CLI command to create a derivation.
This commit is contained in:
John Ericson 2023-03-01 16:57:36 -05:00
parent b200784cec
commit 4e9f32f993
4 changed files with 70 additions and 61 deletions
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61
src/libstore/local-store.cc
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@ -710,62 +710,6 @@ void canonicalisePathMetaData(const Path & path,
canonicalisePathMetaData(path, uidRange, inodesSeen);
}
void LocalStore::checkDerivationOutputs(const StorePath & drvPath, const Derivation & drv)
{
assert(drvPath.isDerivation());
std::string drvName(drvPath.name());
drvName = drvName.substr(0, drvName.size() - drvExtension.size());
auto envHasRightPath = [&](const StorePath & actual, const std::string & varName)
{
auto j = drv.env.find(varName);
if (j == drv.env.end() || parseStorePath(j->second) != actual)
throw Error("derivation '%s' has incorrect environment variable '%s', should be '%s'",
printStorePath(drvPath), varName, printStorePath(actual));
};
// Don't need the answer, but do this anyways to assert is proper
// combination. The code below is more general and naturally allows
// combinations that are currently prohibited.
drv.type();
std::optional<DrvHash> hashesModulo;
for (auto & i : drv.outputs) {
std::visit(overloaded {
[&](const DerivationOutput::InputAddressed & doia) {
if (!hashesModulo) {
// somewhat expensive so we do lazily
hashesModulo = hashDerivationModulo(*this, drv, true);
}
auto currentOutputHash = get(hashesModulo->hashes, i.first);
if (!currentOutputHash)
throw Error("derivation '%s' has unexpected output '%s' (local-store / hashesModulo) named '%s'",
printStorePath(drvPath), printStorePath(doia.path), i.first);
StorePath recomputed = makeOutputPath(i.first, *currentOutputHash, drvName);
if (doia.path != recomputed)
throw Error("derivation '%s' has incorrect output '%s', should be '%s'",
printStorePath(drvPath), printStorePath(doia.path), printStorePath(recomputed));
envHasRightPath(doia.path, i.first);
},
[&](const DerivationOutput::CAFixed & dof) {
StorePath path = makeFixedOutputPath(dof.hash.method, dof.hash.hash, drvName);
envHasRightPath(path, i.first);
},
[&](const DerivationOutput::CAFloating &) {
/* Nothing to check */
},
[&](const DerivationOutput::Deferred &) {
/* Nothing to check */
},
[&](const DerivationOutput::Impure &) {
/* Nothing to check */
},
}, i.second.raw());
}
}
void LocalStore::registerDrvOutput(const Realisation & info, CheckSigsFlag checkSigs)
{
experimentalFeatureSettings.require(Xp::CaDerivations);
@ -876,7 +820,7 @@ uint64_t LocalStore::addValidPath(State & state,
derivations). Note that if this throws an error, then the
DB transaction is rolled back, so the path validity
registration above is undone. */
if (checkOutputs) checkDerivationOutputs(info.path, drv);
if (checkOutputs) drv.checkInvariants(*this, info.path);
for (auto & i : drv.outputsAndOptPaths(*this)) {
/* Floating CA derivations have indeterminate output paths until
@ -1175,8 +1119,7 @@ void LocalStore::registerValidPaths(const ValidPathInfos & infos)
for (auto & [_, i] : infos)
if (i.path.isDerivation()) {
// FIXME: inefficient; we already loaded the derivation in addValidPath().
checkDerivationOutputs(i.path,
readInvalidDerivation(i.path));
readInvalidDerivation(i.path).checkInvariants(*this, i.path);
}
/* Do a topological sort of the paths. This will throw an