relay_knowledge/domain/
graph_version.rs

1use serde::{Deserialize, Serialize};
2
3/// Monotonic graph state version.
4#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
5pub struct GraphVersion(u64);
6
7impl GraphVersion {
8    /// The empty graph version used before storage is attached.
9    pub const ZERO: Self = Self(0);
10
11    /// Creates a graph version from its numeric representation.
12    pub const fn new(value: u64) -> Self {
13        Self(value)
14    }
15
16    /// Returns the numeric graph version.
17    pub const fn get(self) -> u64 {
18        self.0
19    }
20}
21
22#[cfg(test)]
23mod tests {
24    use super::*;
25
26    #[test]
27    fn exposes_numeric_graph_version() {
28        assert_eq!(GraphVersion::ZERO.get(), 0);
29        assert_eq!(GraphVersion::new(42).get(), 42);
30    }
31}

relay_knowledge/domain/graph_version.rs

relay_knowledge/domain/
graph_version.rs