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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| use std::fmt::{self, Display}; | ||
|
|
||
| #[derive(Copy, Clone, Debug)] | ||
| pub enum Unit { | ||
| Bps, | ||
| IOPS, | ||
| } | ||
|
|
||
| /// Human readable size (some units) | ||
| pub enum Size { | ||
| Bps(usize), | ||
| IOPS(usize), | ||
| } | ||
|
|
||
| impl Size { | ||
| pub fn new(size: usize, unit: Unit) -> Self { | ||
| match unit { | ||
| Unit::Bps => Self::Bps(size), | ||
| Unit::IOPS => Self::IOPS(size), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl Display for Size { | ||
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { | ||
| match self { | ||
| Size::Bps(size) => { | ||
| const KI: f64 = 1024.0; | ||
| const MI: f64 = KI * KI; | ||
| const GI: f64 = KI * KI * KI; | ||
| let size = *size as f64; | ||
|
|
||
| if size >= GI { | ||
| write!(f, "{:5.1} GiB/s", size / GI) | ||
| } else if size >= MI { | ||
| write!(f, "{:5.1} MiB/s", size / MI) | ||
| } else if size >= KI { | ||
| write!(f, "{:5.1} KiB/s", size / KI) | ||
| } else { | ||
| write!(f, "{:3.0} B/s", size) | ||
| } | ||
| } | ||
| Size::IOPS(size) => { | ||
| const K: f64 = 1000.0; | ||
| const M: f64 = K * K; | ||
| const G: f64 = K * K * K; | ||
| let size = *size as f64; | ||
|
|
||
| if size >= G { | ||
| write!(f, "{:5.1} giga-IOPS", size / G) | ||
| } else if size >= M { | ||
| write!(f, "{:5.1} mega-IOPS", size / M) | ||
| } else if size >= K { | ||
| write!(f, "{:5.1} kilo-IOPS", size / K) | ||
| } else { | ||
| write!(f, "{:3.0} IOPS", size) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| #[test] | ||
| fn unit_formatter_test() { | ||
| use crate::utils::units::{Size, Unit}; | ||
|
|
||
| // Test Byte units | ||
| assert_eq!(format!("{}", Size::new(1 as usize, Unit::Bps)), " 1 B/s"); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1024 as usize, Unit::Bps)), | ||
| " 1.0 KiB/s" | ||
| ); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1024usize.pow(2), Unit::Bps)), | ||
| " 1.0 MiB/s" | ||
| ); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1024usize.pow(3), Unit::Bps)), | ||
| " 1.0 GiB/s" | ||
| ); | ||
|
|
||
| //Test IOPS | ||
| assert_eq!(format!("{}", Size::new(1 as usize, Unit::IOPS)), " 1 IOPS"); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1000 as usize, Unit::IOPS)), | ||
| " 1.0 kilo-IOPS" | ||
| ); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1000usize.pow(2), Unit::IOPS)), | ||
| " 1.0 mega-IOPS" | ||
| ); | ||
| assert_eq!( | ||
| format!("{}", Size::new(1000usize.pow(3), Unit::IOPS)), | ||
| " 1.0 giga-IOPS" | ||
| ); | ||
| } | ||
| } |