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Tarball fetcher: Use the content-addressed Git cache

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Backported from the lazy-trees branch.
This commit is contained in:
Eelco Dolstra 2024-02-20 12:57:36 +01:00
parent 930b9c8269
commit cabee98152
9 changed files with 185 additions and 95 deletions
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16
src/libfetchers/git-utils.cc
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@ -466,6 +466,22 @@ struct GitRepoImpl : GitRepo, std::enable_shared_from_this<GitRepoImpl>
else
throw Error("Commit signature verification on commit %s failed: %s", rev.gitRev(), output);
}
Hash treeHashToNarHash(const Hash & treeHash) override
{
auto accessor = getAccessor(treeHash, false);
fetchers::Attrs cacheKey({{"_what", "treeHashToNarHash"}, {"treeHash", treeHash.gitRev()}});
if (auto res = fetchers::getCache()->lookup(cacheKey))
return Hash::parseAny(fetchers::getStrAttr(*res, "narHash"), HashAlgorithm::SHA256);
auto narHash = accessor->hashPath(CanonPath::root);
fetchers::getCache()->upsert(cacheKey, fetchers::Attrs({{"narHash", narHash.to_string(HashFormat::SRI, true)}}));
return narHash;
}
};
ref<GitRepo> GitRepo::openRepo(const std::filesystem::path & path, bool create, bool bare)