commit
e1909f9b8b
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@ -1,8 +1,15 @@
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use message::Command;
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use std::time::Instant;
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use std::collections::hash_map::Entry;
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use std::collections::HashMap;
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use util::interval::{Interval, RealInterval};
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#[derive(Default, Clone)]
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use message::{Command, Payload};
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use message::types::{Ping, Pong};
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// delay somewhere near communication timeout
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const ENORMOUS_PING_DELAY: f64 = 10f64;
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#[derive(Default, Clone, Debug)]
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pub struct RunningAverage {
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count: u64,
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bytes: u64,
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@ -28,10 +35,16 @@ impl RunningAverage {
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// qed
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self.bytes = (self.bytes as i64 + ((bytes as i64 - self.bytes as i64) / self.count as i64)) as u64;
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}
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pub fn val(&self) -> u64 {
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self.bytes
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}
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}
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pub enum Flow { Receive, Send }
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#[derive(Default, Clone)]
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pub struct PeerStats {
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pub struct PeerStats<T: Interval = RealInterval> {
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pub last_send: u32,
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pub last_recv: u32,
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@ -39,19 +52,34 @@ pub struct PeerStats {
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pub total_recv: u64,
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pub avg_ping: f64,
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pub min_ping: f64,
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pub total_ping: u64,
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pub min_ping: Option<f64>,
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pub synced_blocks: u32,
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pub synced_headers: u32,
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pub send_avg: HashMap<Command, RunningAverage>,
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pub recv_avg: HashMap<Command, RunningAverage>,
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send_avg: HashMap<Command, RunningAverage>,
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recv_avg: HashMap<Command, RunningAverage>,
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last_ping: Option<Instant>,
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ping_count: u64,
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interval: T,
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}
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impl PeerStats {
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impl<I: Interval> PeerStats<I> {
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pub fn with_interval(interval: I) -> PeerStats<I> {
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PeerStats {
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interval: interval,
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.. PeerStats::default()
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}
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}
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pub fn report_send(&mut self, command: Command, bytes: usize) {
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self.total_send += bytes as u64;
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self.last_send = ::time::get_time().sec as u32;
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if command == Ping::command() {
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self.report_ping_send();
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}
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match self.send_avg.entry(command) {
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Entry::Occupied(mut avg) => {
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avg.get_mut().add(bytes);
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@ -62,9 +90,34 @@ impl PeerStats {
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}
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}
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fn report_ping_send(&mut self) {
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self.last_ping = Some(self.interval.now());
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self.ping_count += 1;
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}
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fn report_pong_recv(&mut self) {
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if let Some(last_ping) = self.last_ping {
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let dur = self.interval.elapsed(last_ping);
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let update = if dur.as_secs() > 10 {
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ENORMOUS_PING_DELAY
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}
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else {
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// max is 10, checked above, dur.as_secs() as u32 cannot overflow; qed
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f64::from(dur.as_secs() as u32) + f64::from(dur.subsec_nanos()) / 1e9
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};
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self.min_ping = Some(self.min_ping.unwrap_or(ENORMOUS_PING_DELAY).min(update));
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self.avg_ping += (update - self.avg_ping) / (self.ping_count as f64);
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}
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}
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pub fn report_recv(&mut self, command: Command, bytes: usize) {
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self.total_recv += bytes as u64;
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self.last_recv = ::time::get_time().sec as u32;
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if command == Pong::command() {
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self.report_pong_recv();
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}
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match self.recv_avg.entry(command) {
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Entry::Occupied(mut avg) => {
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avg.get_mut().add(bytes);
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},
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}
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}
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pub fn avg<T>(&self, dir: Flow, cmd: T) -> u64
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where T: Into<Command>
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{
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match dir {
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Flow::Receive => self.recv_avg.get(&cmd.into()).and_then(|x| Some(x.val())).unwrap_or_default(),
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Flow::Send => self.send_avg.get(&cmd.into()).and_then(|x| Some(x.val())).unwrap_or_default(),
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::RunningAverage;
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use super::{RunningAverage, PeerStats, Flow};
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use util::interval::{FixedIntervalSpawner, RealInterval};
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#[test]
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fn avg() {
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assert_eq!(avg.bytes, 16);
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}
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#[test]
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fn smoky() {
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let mut stats = PeerStats::<FixedIntervalSpawner>::with_interval(FixedIntervalSpawner::new(50));
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stats.report_send("ping".into(), 200);
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assert_eq!(stats.send_avg[&"ping".into()].val(), 200);
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stats.report_recv("pong".into(), 50);
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assert!(stats.avg_ping > 0.03);
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assert!(stats.avg_ping < 0.1);
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}
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#[test]
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fn avg_t() {
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let mut stats = PeerStats::<RealInterval>::default();
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stats.report_send("inv".into(), 200);
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stats.report_send("inv".into(), 300);
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assert_eq!(stats.avg(Flow::Send, "inv"), 250);
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let mut stats = PeerStats::<RealInterval>::default();
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stats.report_recv("inv".into(), 2000);
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stats.report_recv("inv".into(), 3000);
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assert_eq!(stats.avg(Flow::Receive, "inv"), 2500);
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}
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}
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use std::time::{Instant, Duration};
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pub trait Interval : Default {
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fn now(&self) -> Instant {
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Instant::now()
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}
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fn elapsed(&self, instant: Instant) -> Duration {
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instant.elapsed()
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}
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}
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#[derive(Default)]
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pub struct RealInterval;
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impl Interval for RealInterval { }
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#[derive(Default)]
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#[cfg(test)]
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pub struct FixedIntervalSpawner {
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step_millis: u64,
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}
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#[cfg(test)]
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impl FixedIntervalSpawner {
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pub fn new(step_millis: u64) -> Self {
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FixedIntervalSpawner { step_millis : step_millis }
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}
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}
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#[cfg(test)]
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impl Interval for FixedIntervalSpawner {
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fn now(&self) -> Instant {
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Instant::now()
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}
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fn elapsed(&self, instant: Instant) -> Duration {
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(instant - Duration::from_millis(self.step_millis)).elapsed()
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}
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}
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@ -1,5 +1,6 @@
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pub mod nonce;
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pub mod time;
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pub mod interval;
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mod internet_protocol;
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mod node_table;
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mod peer;
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Loading…
Reference in New Issue