garage/src/util/time.rs

26 lines
810 B
Rust
Raw Normal View History

2021-03-20 19:38:44 +00:00
//! Module containing helper functions to manipulate time
2021-03-15 15:21:41 +00:00
use chrono::{SecondsFormat, TimeZone, Utc};
use std::time::{SystemTime, UNIX_EPOCH};
2021-03-20 19:38:44 +00:00
/// Returns milliseconds since UNIX Epoch
2021-03-15 15:21:41 +00:00
pub fn now_msec() -> u64 {
SystemTime::now()
.duration_since(UNIX_EPOCH)
.expect("Fix your clock :o")
.as_millis() as u64
}
2021-12-14 12:55:11 +00:00
/// Increment logical clock
pub fn increment_logical_clock(prev: u64) -> u64 {
std::cmp::max(prev + 1, now_msec())
}
2021-03-20 19:38:44 +00:00
/// Convert a timestamp represented as milliseconds since UNIX Epoch to
/// its RFC3339 representation, such as "2021-01-01T12:30:00Z"
2021-03-15 15:21:41 +00:00
pub fn msec_to_rfc3339(msecs: u64) -> String {
let secs = msecs as i64 / 1000;
let nanos = (msecs as i64 % 1000) as u32 * 1_000_000;
let timestamp = Utc.timestamp(secs, nanos);
timestamp.to_rfc3339_opts(SecondsFormat::Millis, true)
2021-03-15 15:21:41 +00:00
}