feat(tvix/store): add import::import_path r/5932

This imports the contents at a given Path into the tvix store.

It doesn't register the contents at a Path in the store itself, that's up
to the PathInfoService.

Change-Id: I2c493532d65b90f199ddb7dfc90249f5c2957dee
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8159
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI

2 files changed, 137 insertions, 0 deletions

diff --git a/tvix/store/src/tests/import.rs b/tvix/store/src/tests/import.rs
new file mode 100644
index 000000000000..e8373b614e91
--- /dev/null
+++ b/tvix/store/src/tests/import.rs
@@ -0,0 +1,136 @@
+use super::utils::{gen_blob_service, gen_chunk_service, gen_directory_service};
+use crate::blobservice::BlobService;
+use crate::directoryservice::DirectoryService;
+use crate::import::import_path;
+use crate::proto;
+use crate::tests::fixtures::DIRECTORY_COMPLICATED;
+use crate::tests::fixtures::*;
+use tempfile::TempDir;
+
+#[cfg(target_family = "unix")]
+#[test]
+fn symlink() {
+    let tmpdir = TempDir::new().unwrap();
+
+    let data_dir = tmpdir.path().join("data");
+    std::fs::create_dir_all(&data_dir).unwrap();
+    std::os::unix::fs::symlink("/nix/store/somewhereelse", data_dir.join("doesntmatter")).unwrap();
+
+    let root_node = import_path(
+        &mut gen_blob_service(tmpdir.path()),
+        &mut gen_chunk_service(tmpdir.path()),
+        &mut gen_directory_service(tmpdir.path()),
+        data_dir.join("doesntmatter"),
+    )
+    .expect("must succeed");
+
+    assert_eq!(
+        crate::proto::node::Node::Symlink(proto::SymlinkNode {
+            name: "doesntmatter".to_string(),
+            target: "/nix/store/somewhereelse".to_string(),
+        }),
+        root_node,
+    )
+}
+
+#[test]
+fn single_file() {
+    let tmpdir = TempDir::new().unwrap();
+
+    let data_dir = tmpdir.path().join("data");
+    std::fs::create_dir_all(&data_dir).unwrap();
+    std::fs::write(data_dir.join("root"), HELLOWORLD_BLOB_CONTENTS).unwrap();
+
+    let mut blob_service = gen_blob_service(tmpdir.path());
+
+    let root_node = import_path(
+        &mut blob_service,
+        &mut gen_chunk_service(tmpdir.path()),
+        &mut gen_directory_service(tmpdir.path()),
+        data_dir.join("root"),
+    )
+    .expect("must succeed");
+
+    assert_eq!(
+        crate::proto::node::Node::File(proto::FileNode {
+            name: "root".to_string(),
+            digest: HELLOWORLD_BLOB_DIGEST.to_vec(),
+            size: HELLOWORLD_BLOB_CONTENTS.len() as u32,
+            executable: false,
+        }),
+        root_node,
+    );
+
+    // ensure the blob has been uploaded
+    assert!(blob_service
+        .stat(&proto::StatBlobRequest {
+            digest: HELLOWORLD_BLOB_DIGEST.to_vec(),
+            include_chunks: false,
+            ..Default::default()
+        })
+        .unwrap()
+        .is_some());
+}
+
+#[test]
+fn complicated() {
+    let tmpdir = TempDir::new().unwrap();
+
+    let data_dir = tmpdir.path().join("data");
+
+    // Populate path to import
+    std::fs::create_dir_all(&data_dir).unwrap();
+    // File ``.keep`
+    std::fs::write(data_dir.join(".keep"), vec![]).unwrap();
+    // Symlink `aa`
+    std::os::unix::fs::symlink("/nix/store/somewhereelse", data_dir.join("aa")).unwrap();
+    // Directory `keep`
+    std::fs::create_dir(data_dir.join("keep")).unwrap();
+    // File ``keep/.keep`
+    std::fs::write(data_dir.join("keep").join(".keep"), vec![]).unwrap();
+
+    let mut blob_service = gen_blob_service(tmpdir.path());
+    let mut directory_service = gen_directory_service(tmpdir.path());
+
+    let root_node = import_path(
+        &mut blob_service,
+        &mut gen_chunk_service(tmpdir.path()),
+        &mut directory_service,
+        data_dir,
+    )
+    .expect("must succeed");
+
+    // ensure root_node matched expectations
+    assert_eq!(
+        crate::proto::node::Node::Directory(proto::DirectoryNode {
+            name: "data".to_string(),
+            digest: DIRECTORY_COMPLICATED.digest(),
+            size: DIRECTORY_COMPLICATED.size(),
+        }),
+        root_node,
+    );
+
+    // ensure DIRECTORY_WITH_KEEP and DIRECTORY_COMPLICATED have been uploaded
+    assert!(directory_service
+        .get(&proto::get_directory_request::ByWhat::Digest(
+            DIRECTORY_WITH_KEEP.digest()
+        ))
+        .unwrap()
+        .is_some());
+    assert!(directory_service
+        .get(&proto::get_directory_request::ByWhat::Digest(
+            DIRECTORY_COMPLICATED.digest()
+        ))
+        .unwrap()
+        .is_some());
+
+    // ensure EMPTY_BLOB_CONTENTS has been uploaded
+    assert!(blob_service
+        .stat(&proto::StatBlobRequest {
+            digest: EMPTY_BLOB_DIGEST.to_vec(),
+            include_chunks: false,
+            include_bao: false
+        })
+        .unwrap()
+        .is_some());
+}
diff --git a/tvix/store/src/tests/mod.rs b/tvix/store/src/tests/mod.rs
index daea048deddf..8ceea01e3190 100644
--- a/tvix/store/src/tests/mod.rs
+++ b/tvix/store/src/tests/mod.rs
@@ -1,3 +1,4 @@
 pub mod fixtures;
+mod import;
 mod nar_renderer;
 pub mod utils;