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use prost::Message;
tonic::include_proto!("tvix.store.v1");
impl Directory {
// The size of a directory is the number of all regular and symlink elements,
// the number of directory elements, and their size fields.
pub fn size(&self) -> u32 {
self.files.len() as u32
+ self.symlinks.len() as u32
+ self
.directories
.iter()
.fold(0, |acc: u32, e| (acc + 1 + e.size) as u32)
}
pub fn digest(&self) -> Vec<u8> {
let mut hasher = blake3::Hasher::new();
hasher.update(&self.encode_to_vec()).finalize().as_bytes()[..].to_vec()
}
}
#[cfg(test)]
mod tests {
use super::{Directory, DirectoryNode, FileNode, SymlinkNode};
use lazy_static::lazy_static;
lazy_static! {
static ref DUMMY_DIGEST: Vec<u8> = vec![
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
];
}
#[test]
fn test_directory_size() {
{
let d = Directory::default();
assert_eq!(d.size(), 0);
}
{
let d = Directory {
directories: vec![DirectoryNode {
name: String::from("foo"),
digest: vec![],
size: 0,
}],
..Default::default()
};
assert_eq!(d.size(), 1);
}
{
let d = Directory {
directories: vec![DirectoryNode {
name: String::from("foo"),
digest: DUMMY_DIGEST.to_vec(),
size: 4,
}],
..Default::default()
};
assert_eq!(d.size(), 5);
}
{
let d = Directory {
files: vec![FileNode {
name: String::from("foo"),
digest: DUMMY_DIGEST.to_vec(),
size: 42,
executable: false,
}],
..Default::default()
};
assert_eq!(d.size(), 1);
}
{
let d = Directory {
symlinks: vec![SymlinkNode {
name: String::from("foo"),
target: String::from("bar"),
}],
..Default::default()
};
assert_eq!(d.size(), 1);
}
}
#[test]
fn test_digest() {
let d = Directory::default();
assert_eq!(
d.digest(),
vec![
0xaf, 0x13, 0x49, 0xb9, 0xf5, 0xf9, 0xa1, 0xa6, 0xa0, 0x40, 0x4d, 0xea, 0x36, 0xdc,
0xc9, 0x49, 0x9b, 0xcb, 0x25, 0xc9, 0xad, 0xc1, 0x12, 0xb7, 0xcc, 0x9a, 0x93, 0xca,
0xe4, 0x1f, 0x32, 0x62
]
)
}
}
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