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use std::fmt;
use std::time::{Duration, SystemTime};
/// Contains bytes sent and received through a tunnel
#[derive(Default, PartialEq, Eq, Clone)]
pub struct Stats {
pub tx_bytes: u64,
pub rx_bytes: u64,
pub last_handshake_time: Option<SystemTime>,
// Optional DAITA stats
// Currently only available for GotaTun
pub daita: Option<DaitaStats>,
}
#[derive(Debug, Default, PartialEq, Eq, Clone)]
pub struct DaitaStats {
/// Extra bytes added due to constant-size padding of data packets
pub tx_padding_bytes: u64,
/// Bytes of standalone padding packets transmitted
pub tx_padding_packet_bytes: u64,
/// Total extra bytes removed due to constant-size padding of data packets
pub rx_padding_bytes: u64,
/// Bytes of standalone padding packets received
pub rx_padding_packet_bytes: u64,
}
impl fmt::Debug for Stats {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let stats = StatsDebug {
now: SystemTime::now(),
stats: self,
};
fmt::Debug::fmt(&stats, f)
}
}
struct StatsDebug<'a> {
pub now: SystemTime,
pub stats: &'a Stats,
}
impl fmt::Debug for StatsDebug<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut dbg = f.debug_struct("Stats");
dbg.field("tx_bytes", &self.stats.tx_bytes)
.field("rx_bytes", &self.stats.rx_bytes);
if let Some(last_handshake) = self.stats.last_handshake_time {
let time_since_handshake = self
.now
.duration_since(last_handshake)
.unwrap_or(Duration::ZERO);
dbg.field(
"last_handshake",
&format_args!("\"{} ms ago\"", time_since_handshake.as_millis()),
);
} else {
dbg.field("last_handshake", &"no handshake");
}
dbg.field("daita", &self.stats.daita);
dbg.finish()
}
}
/// A map from peer pubkeys to peer stats.
pub type StatsMap = std::collections::HashMap<[u8; 32], Stats>;
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_stats_debug() {
let now = SystemTime::UNIX_EPOCH + Duration::from_secs(60);
let stats = Stats {
tx_bytes: 100,
rx_bytes: 100,
last_handshake_time: Some(SystemTime::UNIX_EPOCH),
..Default::default()
};
insta::assert_debug_snapshot!(StatsDebug { now, stats: &stats });
}
}
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