Add self-analysis-stats to metrics

xtask/src/main.rs

@@ -15,7 +15,7 @@ use xtask::{
     codegen::{self, Mode},
     dist::DistCmd,
     install::{ClientOpt, InstallCmd, Malloc, ServerOpt},
-    metrics::run_metrics,
+    metrics::MetricsCmd,
     not_bash::pushd,
     pre_commit, project_root,
     release::{PromoteCmd, ReleaseCmd},
@@ -118,7 +118,11 @@ FLAGS:
             args.finish()?;
             DistCmd { nightly, client_version }.run()
         }
-        "metrics" => run_metrics(),
+        "metrics" => {
+            let dry_run = args.contains("--dry-run");
+            args.finish()?;
+            MetricsCmd { dry_run }.run()
+        }
         _ => {
             eprintln!(
                 "\

xtask/src/metrics.rs

@@ -12,11 +12,21 @@ use crate::not_bash::{fs2, pushd, rm_rf, run};
 
 type Unit = &'static str;
 
-pub fn run_metrics() -> Result<()> {
-    let mut metrics = Metrics::new()?;
-    metrics.measure_build()?;
+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")?;
+        }
+
+        metrics.measure_build()?;
+        metrics.measure_analysis_stats_self()?;
+
+        if !self.dry_run {
             let _d = pushd("target");
             let metrics_token = env::var("METRICS_TOKEN").unwrap();
             let repo = format!("https://{}@github.com/rust-analyzer/metrics.git", metrics_token);
@@ -31,17 +41,24 @@ pub fn run_metrics() -> Result<()> {
         }
         eprintln!("{:#?}", metrics);
         Ok(())
+    }
 }
 
 impl Metrics {
     fn measure_build(&mut self) -> Result<()> {
         run!("cargo fetch")?;
-        rm_rf("./target/release")?;
 
-        let build = Instant::now();
+        let time = Instant::now();
         run!("cargo build --release --package rust-analyzer --bin rust-analyzer")?;
-        let build = build.elapsed();
-        self.report("build", build.as_millis() as u64, "ms");
+        let time = time.elapsed();
+        self.report("build", time.as_millis() as u64, "ms");
+        Ok(())
+    }
+    fn measure_analysis_stats_self(&mut self) -> Result<()> {
+        let time = Instant::now();
+        run!("./target/release/rust-analyzer analysis-stats .")?;
+        let time = time.elapsed();
+        self.report("analysis-stats/self", time.as_millis() as u64, "ms");
         Ok(())
     }
 }