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Rewrite the CA paths when moving them between store

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Bring back the possibility to copy CA paths with no reference (like the
outputs of FO derivations or stuff imported at eval time) between stores
that have a different prefix.
This commit is contained in:
Théophane Hufschmitt 2022-06-08 15:13:11 +02:00
parent cb0553ecd0
commit 480c2b6699
1 changed files with 24 additions and 14 deletions
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38
src/libstore/store-api.cc
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@ -289,18 +289,6 @@ void Store::addMultipleToStore(
[&](const StorePath & path) {
auto & [info, source] = *infosMap.at(path);
/* auto storePathForDst = info.storePath; */
/* if (info->ca && info->references.empty()) { */
/* storePathForDst = dstStore.makeFixedOutputPathFromCA(storePath.name(), *info->ca); */
/* if (dstStore.storeDir == srcStore.storeDir) */
/* assert(storePathForDst == storePath); */
/* if (storePathForDst != storePath) */
/* debug("replaced path '%s' to '%s' for substituter '%s'", */
/* srcStore.printStorePath(storePath), */
/* dstStore.printStorePath(storePathForDst), */
/* dstStore.getUri()); */
/* } */
/* pathsMap.insert_or_assign(storePath, storePathForDst); */
if (isValidPath(info.path)) {
nrDone++;
@ -1085,10 +1073,32 @@ std::map<StorePath, StorePath> copyPaths(
Store::PathsSource pathsToCopy;
auto computeStorePathForDst = [&](const ValidPathInfo & currentPathInfo) -> StorePath {
auto storePathForSrc = currentPathInfo.path;
auto storePathForDst = storePathForSrc;
if (currentPathInfo.ca && currentPathInfo.references.empty()) {
storePathForDst = dstStore.makeFixedOutputPathFromCA(storePathForSrc.name(), *currentPathInfo.ca);
if (dstStore.storeDir == srcStore.storeDir)
assert(storePathForDst == storePathForSrc);
if (storePathForDst != storePathForSrc)
debug("replaced path '%s' to '%s' for substituter '%s'",
srcStore.printStorePath(storePathForSrc),
dstStore.printStorePath(storePathForDst),
dstStore.getUri());
}
return storePathForDst;
};
for (auto & missingPath : sortedMissing) {
auto info = srcStore.queryPathInfo(missingPath);
auto source = sinkToSource([&](Sink & sink) {
auto storePathForDst = computeStorePathForDst(*info);
pathsMap.insert_or_assign(missingPath, storePathForDst);
ValidPathInfo infoForDst = *info;
infoForDst.path = storePathForDst;
auto source = sinkToSource([&](Sink & sink) {
// We can reasonably assume that the copy will happen whenever we
// read the path, so log something about that at that point
auto srcUri = srcStore.getUri();
@ -1101,7 +1111,7 @@ std::map<StorePath, StorePath> copyPaths(
srcStore.narFromPath(missingPath, sink);
});
pathsToCopy.push_back(std::pair{*info, std::move(source)});
pathsToCopy.push_back(std::pair{infoForDst, std::move(source)});
}
dstStore.addMultipleToStore(pathsToCopy, act, repair, checkSigs);