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Get last commit time of github flakes

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This commit is contained in:
Eelco Dolstra 2019-05-28 22:35:41 +02:00
parent 0f840483c7
commit ae7b56cd9a
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GPG key ID: 8170B4726D7198DE
5 changed files with 37 additions and 8 deletions
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17
src/libstore/download.cc
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@ -808,6 +808,7 @@ CachedDownloadResult Downloader::downloadCached(
CachedDownloadResult result;
result.storePath = expectedStorePath;
result.path = store->toRealPath(expectedStorePath);
assert(!request.getLastModified); // FIXME
return result;
}
}
@ -892,16 +893,26 @@ CachedDownloadResult Downloader::downloadCached(
store->addTempRoot(unpackedStorePath);
if (!store->isValidPath(unpackedStorePath))
unpackedStorePath = "";
else
result.lastModified = lstat(unpackedLink).st_mtime;
}
if (unpackedStorePath.empty()) {
printInfo(format("unpacking '%1%'...") % url);
Path tmpDir = createTempDir();
AutoDelete autoDelete(tmpDir, true);
// FIXME: this requires GNU tar for decompression.
runProgram("tar", true, {"xf", store->toRealPath(storePath), "-C", tmpDir, "--strip-components", "1"});
unpackedStorePath = store->addToStore(name, tmpDir, true, htSHA256, defaultPathFilter, NoRepair);
runProgram("tar", true, {"xf", store->toRealPath(storePath), "-C", tmpDir});
auto members = readDirectory(tmpDir);
if (members.size() != 1)
throw nix::Error("tarball '%s' contains an unexpected number of top-level files", url);
auto topDir = tmpDir + "/" + members.begin()->name;
result.lastModified = lstat(topDir).st_mtime;
unpackedStorePath = store->addToStore(name, topDir, true, htSHA256, defaultPathFilter, NoRepair);
}
replaceSymlink(unpackedStorePath, unpackedLink);
// Store the last-modified date of the tarball in the symlink
// mtime. This saves us from having to store it somewhere
// else.
replaceSymlink(unpackedStorePath, unpackedLink, result.lastModified);
storePath = unpackedStorePath;
}

2
src/libstore/download.hh
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@ -49,6 +49,7 @@ struct CachedDownloadRequest
Hash expectedHash;
unsigned int ttl = settings.tarballTtl;
bool gcRoot = false;
bool getLastModified = false;
CachedDownloadRequest(const std::string & uri)
: uri(uri) { }
@ -62,6 +63,7 @@ struct CachedDownloadResult
Path path;
std::optional<std::string> etag;
std::string effectiveUri;
std::optional<time_t> lastModified;
};
class Store;