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write.rs
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write.rs
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use rattler_conda_types::package::ArchiveType;
use rattler_package_streaming::read::{extract_conda, extract_tar_bz2};
use rattler_package_streaming::write::{
write_conda_package, write_tar_bz2_package, CompressionLevel,
};
use std::collections::HashMap;
use std::fs::File;
use std::io::Read;
use std::path::{Path, PathBuf};
use walkdir::WalkDir;
fn find_all_archives() -> impl Iterator<Item = PathBuf> {
std::fs::read_dir(Path::new(env!("CARGO_MANIFEST_DIR")).join("../../test-data"))
.unwrap()
.filter_map(Result::ok)
.map(|d| d.path())
}
fn find_all_package_files(path: &Path) -> Vec<PathBuf> {
WalkDir::new(path)
.into_iter()
.filter_map(|e| e.ok())
.map(|e| e.into_path())
.filter(|p| p.is_file())
.collect::<Vec<_>>()
}
enum Decoder {
TarBz2,
Zst,
}
impl Decoder {
fn open<'a, T: Read>(&'a self, f: &'a mut T) -> tar::Archive<Box<dyn std::io::Read + '_>> {
match self {
Decoder::TarBz2 => {
let d = bzip2::read::BzDecoder::new(f);
tar::Archive::new(Box::new(d))
}
Decoder::Zst => {
let d = zstd::stream::read::Decoder::new(f).unwrap();
tar::Archive::new(Box::new(d))
}
}
}
}
enum FilterFiles {
None,
NoInfo,
NoLicense,
}
/// Compare two tar archives by comparing the files, the file sizes and the file metadata (uid, gid, mode, mtime)
/// However, currently we skip some checks as we are not yet properly setting some of the values
/// Also note that there are some conda packagaging weirdnesses going on (like the info/licenses/... files in the pkg archive)
fn compare_two_tar_archives<T: Read>(
f1: &mut T,
f2: &mut T,
decoder: Decoder,
filter: FilterFiles,
) {
let mut archive1 = decoder.open(f1);
let mut archive2 = decoder.open(f2);
let entries1 = archive1.entries().unwrap();
let entries2 = archive2.entries().unwrap();
// create a map with entry.path as key and entry.header as value
let mut map1 = HashMap::new();
let mut map2 = HashMap::new();
for entry in entries1 {
let entry = entry.unwrap();
let path = entry.path().unwrap().into_owned();
map1.insert(path, entry.header().clone());
}
for entry in entries2 {
let entry = entry.unwrap();
let path = entry.path().unwrap().into_owned();
map2.insert(path, entry.header().clone());
}
// remove info/ files from map1 because conda-build adds the
// info/licenses/... files to the pkg archive (not the info archive) for .conda packages
match filter {
FilterFiles::NoInfo => {
let info = PathBuf::from("info");
map1 = map1
.into_iter()
.filter(|(k, _)| !k.starts_with(&info))
.collect::<HashMap<_, _>>();
}
FilterFiles::NoLicense => {
let info_licenses = PathBuf::from("info/licenses");
map2 = map2
.into_iter()
.filter(|(k, _)| !k.starts_with(&info_licenses))
.collect::<HashMap<_, _>>();
}
_ => {}
}
assert_eq!(map1.len(), map2.len());
for (path, header1) in map1 {
let header2 = map2.get(&path).unwrap();
assert_eq!(header1.size().unwrap(), header2.size().unwrap());
// println!("Comparing {:?}", path);
// println!(
// "mode: {:o} {:o}",
// header1.mode().unwrap(),
// header2.mode().unwrap()
// );
// assert_eq!(header1.mode().unwrap(), header2.mode().unwrap());
// assert_eq!(header1.uid().unwrap(), header2.uid().unwrap());
// assert_eq!(header1.gid().unwrap(), header2.gid().unwrap());
}
}
fn compare_two_conda_archives(p1: &Path, p2: &Path) {
println!("Comparing {:?} and {:?}", p1, p2);
let mut archive1 = File::open(p1).unwrap();
let mut archive2 = File::open(p2).unwrap();
// open outer zip file
let mut zip1 = zip::ZipArchive::new(&mut archive1).unwrap();
let mut zip2 = zip::ZipArchive::new(&mut archive2).unwrap();
// find metadata.json file in outer zip file
let metadata1 = zip1.by_name("metadata.json").unwrap();
let metadata2 = zip2.by_name("metadata.json").unwrap();
// read metadata.json file
let metadata_bytes1 = metadata1.bytes().collect::<Result<Vec<u8>, _>>().unwrap();
let _mstr1 = std::str::from_utf8(&metadata_bytes1).unwrap();
let metadata_bytes2 = metadata2.bytes().collect::<Result<Vec<u8>, _>>().unwrap();
let _mstr2 = std::str::from_utf8(&metadata_bytes2).unwrap();
// compare metadata.json files
// TODO we should use the Python formatter!
// assert_eq!(mstr1, mstr2);
let filename = p1.file_stem().unwrap().to_string_lossy();
let pkg_name = format!("pkg-{filename}.tar.zst");
let info_name = format!("info-{filename}.tar.zst");
{
let mut pkg1 = zip1.by_name(&pkg_name).unwrap();
let mut pkg2 = zip2.by_name(&pkg_name).unwrap();
compare_two_tar_archives(&mut pkg1, &mut pkg2, Decoder::Zst, FilterFiles::NoInfo);
}
let mut info1 = zip1.by_name(&info_name).unwrap();
let mut info2 = zip2.by_name(&info_name).unwrap();
compare_two_tar_archives(&mut info1, &mut info2, Decoder::Zst, FilterFiles::NoLicense);
}
#[test]
fn test_rewrite_tar_bz2() {
let temp_dir = Path::new(env!("CARGO_TARGET_TMPDIR"));
println!("Target dir: {}", temp_dir.display());
for file_path in
find_all_archives().filter(|path| ArchiveType::try_from(path) == Some(ArchiveType::TarBz2))
{
println!("Name: {}", file_path.display());
let target_dir = temp_dir.join(file_path.file_stem().unwrap());
extract_tar_bz2(File::open(&file_path).unwrap(), &target_dir).unwrap();
let new_archive = temp_dir.join(format!(
"{}-new.tar.bz2",
file_path.file_stem().unwrap().to_string_lossy().as_ref()
));
let writer = File::create(&new_archive).unwrap();
let paths = find_all_package_files(&target_dir);
write_tar_bz2_package(writer, &target_dir, &paths, CompressionLevel::Default, None)
.unwrap();
// compare the two archives
let mut f1 = File::open(&file_path).unwrap();
let mut f2 = File::open(&new_archive).unwrap();
compare_two_tar_archives(&mut f1, &mut f2, Decoder::TarBz2, FilterFiles::None);
}
}
#[test]
fn test_rewrite_conda() {
let temp_dir = Path::new(env!("CARGO_TARGET_TMPDIR"));
println!("Target dir: {}", temp_dir.display());
for file_path in find_all_archives().filter(|path| {
ArchiveType::try_from(path) == Some(ArchiveType::Conda)
&& path.file_name().unwrap() != "stir-5.0.2-py38h9224444_7.conda"
}) {
println!("Name: {}", file_path.display());
let name = file_path.file_stem().unwrap().to_string_lossy();
let target_dir = temp_dir.join(file_path.file_stem().unwrap());
extract_conda(File::open(&file_path).unwrap(), &target_dir).unwrap();
let new_archive = temp_dir.join(format!(
"{}-new.conda",
file_path.file_stem().unwrap().to_string_lossy().as_ref()
));
let writer = File::create(&new_archive).unwrap();
let paths = find_all_package_files(&target_dir);
write_conda_package(
writer,
&target_dir,
&paths,
CompressionLevel::Default,
&name,
None,
)
.unwrap();
// compare the two archives
compare_two_conda_archives(&file_path, &new_archive);
}
}