rvf_types/
compression.rs

1//! Compression algorithm identifiers.
2
3/// Identifies the compression algorithm applied to a segment payload.
4#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
5#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
6#[repr(u8)]
7pub enum CompressionAlgo {
8    /// No compression.
9    None = 0,
10    /// LZ4 block compression (~4 GB/s decompress).
11    Lz4 = 1,
12    /// Zstandard compression (~1.5 GB/s decompress, higher ratio).
13    Zstd = 2,
14    /// Domain-specific custom compression.
15    Custom = 3,
16}
17
18impl TryFrom<u8> for CompressionAlgo {
19    type Error = u8;
20
21    fn try_from(value: u8) -> Result<Self, Self::Error> {
22        match value {
23            0 => Ok(Self::None),
24            1 => Ok(Self::Lz4),
25            2 => Ok(Self::Zstd),
26            3 => Ok(Self::Custom),
27            other => Err(other),
28        }
29    }
30}
31
32#[cfg(test)]
33mod tests {
34    use super::*;
35
36    #[test]
37    fn round_trip() {
38        for raw in 0..=3u8 {
39            let algo = CompressionAlgo::try_from(raw).unwrap();
40            assert_eq!(algo as u8, raw);
41        }
42    }
43
44    #[test]
45    fn invalid_value() {
46        assert_eq!(CompressionAlgo::try_from(4), Err(4));
47    }
48}
rvf_types/compression.rs

rvf_types/
compression.rs
