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Add copyClosure utility function for Hydra

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This commit is contained in:
Eelco Dolstra 2016-10-07 19:15:25 +02:00
parent 629ab80022
commit 35db4f65a0
2 changed files with 29 additions and 0 deletions
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24
src/libstore/store-api.cc
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@ -414,6 +414,30 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
}
void copyClosure(ref<Store> srcStore, ref<Store> dstStore,
const PathSet & storePaths, bool repair)
{
PathSet closure;
for (auto & path : storePaths)
srcStore->computeFSClosure(path, closure);
PathSet valid = dstStore->queryValidPaths(closure);
if (valid.size() == closure.size()) return;
Paths sorted = srcStore->topoSortPaths(closure);
Paths missing;
for (auto i = sorted.rbegin(); i != sorted.rend(); ++i)
if (!valid.count(*i)) missing.push_back(*i);
printMsg(lvlDebug, format("copying %1% missing paths") % missing.size());
for (auto & i : missing)
copyStorePath(srcStore, dstStore, i, repair);
}
ValidPathInfo decodeValidPathInfo(std::istream & str, bool hashGiven)
{
ValidPathInfo info;

5
src/libstore/store-api.hh
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@ -585,6 +585,11 @@ void copyStorePath(ref<Store> srcStore, ref<Store> dstStore,
const Path & storePath, bool repair = false);
/* Copy the closure of the specified paths from one store to another. */
void copyClosure(ref<Store> srcStore, ref<Store> dstStore,
const PathSet & storePaths, bool repair = false);
/* Remove the temporary roots file for this process. Any temporary
root becomes garbage after this point unless it has been registered
as a (permanent) root. */