//! Defines Checkpoint identity and persistence types.

use std::fmt;

use serde::{Deserialize, Serialize};

#[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq, Hash, PartialOrd, Ord)]
#[serde(transparent)]
pub struct CheckpointId(pub i64);

impl fmt::Display for CheckpointId {
    fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
        self.0.fmt(formatter)
    }
}