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Add makeFixedOutputPathFromCA function

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This puts what we are already doing into a shared method. It just
needs a path name and a ca and produces a store path.
This commit is contained in:
Matthew Bauer 2020-06-12 16:36:35 -05:00
parent 006f1252d2
commit b2cb288cdd
3 changed files with 26 additions and 22 deletions
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11
src/libstore/local-store.cc
View file

@ -862,15 +862,10 @@ void LocalStore::querySubstitutablePathInfos(const StorePathSet & paths,
for (auto & path : paths) {
auto subPath(path.clone());
auto ca_ = pathsCA.find(printStorePath(path));
auto ca = pathsCA.find(printStorePath(path));
// recompute store path so that we can use a different store root
if (ca_ != pathsCA.end()) {
auto ca(ca_->second);
if (!hasPrefix(ca, "fixed:"))
continue;
FileIngestionMethod ingestionMethod { ca.compare(6, 2, "r:") == 0 };
Hash hash(std::string(ca, ingestionMethod == FileIngestionMethod::Recursive ? 8 : 6));
subPath = makeFixedOutputPath(ingestionMethod, hash, path.name());
if (ca != pathsCA.end() && (hasPrefix(ca->second, "fixed:") || hasPrefix(ca->second, "text:"))) {
subPath = makeFixedOutputPathFromCA(path.name(), ca->second);
if (subPath != path)
debug("replaced path '%s' with '%s' for substituter '%s'", printStorePath(path), sub->printStorePath(subPath), sub->getUri());
} else if (sub->storeDir != storeDir) continue;

31
src/libstore/store-api.cc
View file

@ -191,6 +191,19 @@ StorePath Store::makeFixedOutputPath(
}
}
StorePath Store::makeFixedOutputPathFromCA(std::string_view name, std::string ca,
const StorePathSet & references, bool hasSelfReference) const
{
if (hasPrefix(ca, "fixed:")) {
FileIngestionMethod ingestionMethod { ca.compare(6, 2, "r:") == 0 };
Hash hash(std::string(ca, ingestionMethod == FileIngestionMethod::Recursive ? 8 : 6));
return makeFixedOutputPath(ingestionMethod, hash, name, references, hasSelfReference);
} else if (hasPrefix(ca, "text:")) {
Hash hash(std::string(ca, 5));
return makeTextPath(name, hash, references);
} else
throw Error("'%s' is not a valid ca", ca);
}
StorePath Store::makeTextPath(std::string_view name, const Hash & hash,
const StorePathSet & references) const
@ -583,9 +596,7 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
// recompute store path on the chance dstStore does it differently
if (info->isContentAddressed(*srcStore)) {
auto info2 = make_ref<ValidPathInfo>(*info);
FileIngestionMethod ingestionMethod { info->ca.compare(6, 2, "r:") == 0 };
Hash hash(std::string(info->ca, ingestionMethod == FileIngestionMethod::Recursive ? 8 : 6));
info2->path = dstStore->makeFixedOutputPath(ingestionMethod, hash, storePath.name());
info2->path = dstStore->makeFixedOutputPathFromCA(info->path.name(), info->ca);
info = info2;
}
@ -656,11 +667,8 @@ void copyPaths(ref<Store> srcStore, ref<Store> dstStore, const StorePathSet & st
auto info = srcStore->queryPathInfo(storePath);
auto storePathForDst = storePath.clone();
if (hasPrefix(info->ca, "fixed:"))
{
FileIngestionMethod ingestionMethod { info->ca.compare(6, 2, "r:") == 0 };
Hash hash(std::string(info->ca, ingestionMethod == FileIngestionMethod::Recursive ? 8 : 6));
storePathForDst = dstStore->makeFixedOutputPath(ingestionMethod, hash, storePath.name());
if (info->isContentAddressed(*srcStore)) {
storePathForDst = dstStore->makeFixedOutputPathFromCA(storePath.name(), info->ca);
if (storePathForDst != storePath)
debug("rewriting path '%s' to '%s' for substituter '%s'", srcStore->printStorePath(storePath), dstStore->printStorePath(storePathForDst), dstStore->getUri());
}
@ -684,11 +692,8 @@ void copyPaths(ref<Store> srcStore, ref<Store> dstStore, const StorePathSet & st
auto info = srcStore->queryPathInfo(storePath);
auto storePathForDst = storePath.clone();
if (hasPrefix(info->ca, "fixed:"))
{
FileIngestionMethod ingestionMethod { info->ca.compare(6, 2, "r:") == 0 };
Hash hash(std::string(info->ca, ingestionMethod == FileIngestionMethod::Recursive ? 8 : 6));
storePathForDst = dstStore->makeFixedOutputPath(ingestionMethod, hash, storePath.name());
if (info->isContentAddressed(*srcStore)) {
storePathForDst = dstStore->makeFixedOutputPathFromCA(storePath.name(), info->ca);
if (storePathForDst != storePath)
debug("rewriting path '%s' to '%s' for substituter '%s'", srcStore->printStorePath(storePath), dstStore->printStorePath(storePathForDst), dstStore->getUri());
}

6
src/libstore/store-api.hh
View file

@ -352,7 +352,11 @@ public:
bool hasSelfReference = false) const;
StorePath makeTextPath(std::string_view name, const Hash & hash,
const StorePathSet & references) const;
const StorePathSet & references = {}) const;
StorePath makeFixedOutputPathFromCA(std::string_view name, std::string ca,
const StorePathSet & references = {},
bool hasSelfReference = false) const;
/* This is the preparatory part of addToStore(); it computes the
store path to which srcPath is to be copied. Returns the store