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use std::{
collections::BTreeMap,
env,
io::Write as _,
path::Path,
time::{Instant, SystemTime, UNIX_EPOCH},
};
use anyhow::{bail, format_err, Result};
use xshell::{cmd, mkdir_p, pushd, pushenv, read_file, rm_rf};
type Unit = String;
pub struct MetricsCmd {
pub dry_run: bool,
}
impl MetricsCmd {
pub fn run(self) -> Result<()> {
let mut metrics = Metrics::new()?;
if !self.dry_run {
rm_rf("./target/release")?;
}
if !Path::new("./target/rustc-perf").exists() {
mkdir_p("./target/rustc-perf")?;
cmd!("git clone https://github.com/rust-lang/rustc-perf.git ./target/rustc-perf")
.run()?;
}
{
let _d = pushd("./target/rustc-perf")?;
cmd!("git reset --hard 1d9288b0da7febf2599917da1b57dc241a1af033").run()?;
}
let _env = pushenv("RA_METRICS", "1");
metrics.measure_build()?;
metrics.measure_analysis_stats_self()?;
metrics.measure_analysis_stats("ripgrep")?;
metrics.measure_analysis_stats("webrender")?;
if !self.dry_run {
let _d = pushd("target")?;
let metrics_token = env::var("METRICS_TOKEN").unwrap();
cmd!(
"git clone --depth 1 https://{metrics_token}@github.com/rust-analyzer/metrics.git"
)
.run()?;
let _d = pushd("metrics")?;
let mut file = std::fs::OpenOptions::new().append(true).open("metrics.json")?;
writeln!(file, "{}", metrics.json())?;
cmd!("git add .").run()?;
cmd!("git -c user.name=Bot -c [email protected] commit --message 📈")
.run()?;
cmd!("git push origin master").run()?;
}
eprintln!("{:#?}", metrics);
Ok(())
}
}
impl Metrics {
fn measure_build(&mut self) -> Result<()> {
eprintln!("\nMeasuring build");
cmd!("cargo fetch").run()?;
let time = Instant::now();
cmd!("cargo build --release --package rust-analyzer --bin rust-analyzer").run()?;
let time = time.elapsed();
self.report("build", time.as_millis() as u64, "ms".into());
Ok(())
}
fn measure_analysis_stats_self(&mut self) -> Result<()> {
self.measure_analysis_stats_path("self", &".")
}
fn measure_analysis_stats(&mut self, bench: &str) -> Result<()> {
self.measure_analysis_stats_path(
bench,
&format!("./target/rustc-perf/collector/benchmarks/{}", bench),
)
}
fn measure_analysis_stats_path(&mut self, name: &str, path: &str) -> Result<()> {
eprintln!("\nMeasuring analysis-stats/{}", name);
let output = cmd!("./target/release/rust-analyzer analysis-stats --quiet {path}").read()?;
for (metric, value, unit) in parse_metrics(&output) {
self.report(&format!("analysis-stats/{}/{}", name, metric), value, unit.into());
}
Ok(())
}
}
fn parse_metrics(output: &str) -> Vec<(&str, u64, &str)> {
output
.lines()
.filter_map(|it| {
let entry = it.split(':').collect::<Vec<_>>();
match entry.as_slice() {
["METRIC", name, value, unit] => Some((*name, value.parse().unwrap(), *unit)),
_ => None,
}
})
.collect()
}
#[derive(Debug)]
struct Metrics {
host: Host,
timestamp: SystemTime,
revision: String,
metrics: BTreeMap<String, (u64, Unit)>,
}
#[derive(Debug)]
struct Host {
os: String,
cpu: String,
mem: String,
}
impl Metrics {
fn new() -> Result<Metrics> {
let host = Host::new()?;
let timestamp = SystemTime::now();
let revision = cmd!("git rev-parse HEAD").read()?;
Ok(Metrics { host, timestamp, revision, metrics: BTreeMap::new() })
}
fn report(&mut self, name: &str, value: u64, unit: Unit) {
self.metrics.insert(name.into(), (value, unit));
}
fn json(&self) -> String {
let mut buf = String::new();
self.to_json(write_json::object(&mut buf));
buf
}
fn to_json(&self, mut obj: write_json::Object<'_>) {
self.host.to_json(obj.object("host"));
let timestamp = self.timestamp.duration_since(UNIX_EPOCH).unwrap();
obj.number("timestamp", timestamp.as_secs() as f64);
obj.string("revision", &self.revision);
let mut metrics = obj.object("metrics");
for (k, (value, unit)) in &self.metrics {
metrics.array(k).number(*value as f64).string(unit);
}
}
}
impl Host {
fn new() -> Result<Host> {
if cfg!(not(target_os = "linux")) {
bail!("can only collect metrics on Linux ");
}
let os = read_field("/etc/os-release", "PRETTY_NAME=")?.trim_matches('"').to_string();
let cpu =
read_field("/proc/cpuinfo", "model name")?.trim_start_matches(':').trim().to_string();
let mem = read_field("/proc/meminfo", "MemTotal:")?;
return Ok(Host { os, cpu, mem });
fn read_field<'a>(path: &str, field: &str) -> Result<String> {
let text = read_file(path)?;
let line = text
.lines()
.find(|it| it.starts_with(field))
.ok_or_else(|| format_err!("can't parse {}", path))?;
Ok(line[field.len()..].trim().to_string())
}
}
fn to_json(&self, mut obj: write_json::Object<'_>) {
obj.string("os", &self.os).string("cpu", &self.cpu).string("mem", &self.mem);
}
}
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