serve metrics

Cargo.lock

···
 checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
 
 [[package]]
+name = "aws-lc-rs"
+version = "1.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fcc8f365936c834db5514fc45aee5b1202d677e6b40e48468aaaa8183ca8c7"
+dependencies = [
+ "aws-lc-sys",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-lc-sys"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61b1d86e7705efe1be1b569bab41d4fa1e14e220b60a160f78de2db687add079"
+dependencies = [
+ "bindgen 0.69.5",
+ "cc",
+ "cmake",
+ "dunce",
+ "fs_extra",
+]
+
+[[package]]
 name = "axum"
 version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
  "itertools 0.12.1",
  "lazy_static",
  "lazycell",
+ "log",
+ "prettyplease",
  "proc-macro2",
  "quote",
  "regex",
  "rustc-hash 1.1.0",
  "shlex",
  "syn",
+ "which",
 ]
 
 [[package]]
···
 ]
 
 [[package]]
+name = "cmake"
+version = "0.1.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7caa3f9de89ddbe2c607f4101924c5abec803763ae9534e4f4d7d8f84aa81f0"
+dependencies = [
+ "cc",
+]
+
+[[package]]
 name = "colorchoice"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
 ]
 
 [[package]]
+name = "core-foundation"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2a6cd9ae233e7f62ba4e9353e81a88df7fc8a5987b8d445b4d90c879bd156f6"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
+[[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
  "openapiv3",
  "paste",
  "percent-encoding",
- "rustls",
+ "rustls 0.22.4",
  "rustls-pemfile",
  "schemars",
  "scopeguard",
···
  "slog-term",
  "thiserror 2.0.12",
  "tokio",
- "tokio-rustls",
+ "tokio-rustls 0.25.0",
  "toml",
  "uuid",
  "version_check",
···
  "serde_tokenstream",
  "syn",
 ]
+
+[[package]]
+name = "dunce"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
 
 [[package]]
 name = "dyn-clone"
···
  "rustix 0.38.44",
  "windows-sys 0.52.0",
 ]
+
+[[package]]
+name = "fs_extra"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
 
 [[package]]
 name = "futures"
···
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
+[[package]]
+name = "home"
+version = "0.5.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589533453244b0995c858700322199b2becb13b627df2851f64a2775d024abcf"
+dependencies = [
+ "windows-sys 0.59.0",
+]
 
 [[package]]
 name = "hostname"
···
 ]
 
 [[package]]
+name = "hyper-rustls"
+version = "0.27.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3c93eb611681b207e1fe55d5a71ecf91572ec8a6705cdb6857f7d8d5242cf58"
+dependencies = [
+ "http",
+ "hyper",
+ "hyper-util",
+ "rustls 0.23.28",
+ "rustls-native-certs",
+ "rustls-pki-types",
+ "tokio",
+ "tokio-rustls 0.26.2",
+ "tower-service",
+]
+
+[[package]]
 name = "hyper-util"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
 
 [[package]]
 name = "metrics-exporter-prometheus"
-version = "0.17.0"
+version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df88858cd28baaaf2cfc894e37789ed4184be0e1351157aec7bf3c2266c793fd"
+checksum = "989903b4c7abfa6827a8d1128ef42faf83f8969d429797c5431f236f2cae8b8b"
 dependencies = [
  "base64 0.22.1",
  "http-body-util",
  "hyper",
+ "hyper-rustls",
  "hyper-util",
  "indexmap 2.9.0",
  "ipnet",
···
  "openssl-probe",
  "openssl-sys",
  "schannel",
- "security-framework",
+ "security-framework 2.11.1",
  "security-framework-sys",
  "tempfile",
 ]
···
 checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
 dependencies = [
  "zerocopy 0.8.24",
+]
+
+[[package]]
+name = "prettyplease"
+version = "0.2.34"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6837b9e10d61f45f987d50808f83d1ee3d206c66acf650c3e4ae2e1f6ddedf55"
+dependencies = [
+ "proc-macro2",
+ "syn",
 ]
 
 [[package]]
···
  "log",
  "ring",
  "rustls-pki-types",
- "rustls-webpki",
+ "rustls-webpki 0.102.8",
  "subtle",
  "zeroize",
 ]
 
 [[package]]
+name = "rustls"
+version = "0.23.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7160e3e10bf4535308537f3c4e1641468cd0e485175d6163087c0393c7d46643"
+dependencies = [
+ "aws-lc-rs",
+ "once_cell",
+ "rustls-pki-types",
+ "rustls-webpki 0.103.3",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "rustls-native-certs"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fcff2dd52b58a8d98a70243663a0d234c4e2b79235637849d15913394a247d3"
+dependencies = [
+ "openssl-probe",
+ "rustls-pki-types",
+ "schannel",
+ "security-framework 3.2.0",
+]
+
+[[package]]
 name = "rustls-pemfile"
 version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
 ]
 
 [[package]]
+name = "rustls-webpki"
+version = "0.103.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e4a72fe2bcf7a6ac6fd7d0b9e5cb68aeb7d4c0a0271730218b3e92d43b4eb435"
+dependencies = [
+ "aws-lc-rs",
+ "ring",
+ "rustls-pki-types",
+ "untrusted",
+]
+
+[[package]]
 name = "rustversion"
 version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
 checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
 dependencies = [
  "bitflags",
- "core-foundation",
+ "core-foundation 0.9.4",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "271720403f46ca04f7ba6f55d438f8bd878d6b8ca0a1046e8228c4145bcbb316"
+dependencies = [
+ "bitflags",
+ "core-foundation 0.10.1",
  "core-foundation-sys",
  "libc",
  "security-framework-sys",
···
  "links",
  "log",
  "metrics",
+ "metrics-exporter-prometheus 0.17.1",
  "rand 0.9.1",
  "schemars",
  "semver",
···
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "775e0c0f0adb3a2f22a00c4745d728b479985fc15ee7ca6a2608388c5569860f"
 dependencies = [
- "rustls",
+ "rustls 0.22.4",
  "rustls-pki-types",
  "tokio",
 ]
 
 [[package]]
+name = "tokio-rustls"
+version = "0.26.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e727b36a1a0e8b74c376ac2211e40c2c8af09fb4013c60d910495810f008e9b"
+dependencies = [
+ "rustls 0.23.28",
+ "tokio",
+]
+
+[[package]]
 name = "tokio-tungstenite"
 version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
···
  "log",
  "lsm-tree",
  "metrics",
- "metrics-exporter-prometheus 0.17.0",
+ "metrics-exporter-prometheus 0.17.1",
  "schemars",
  "semver",
  "serde",
···
 dependencies = [
  "js-sys",
  "wasm-bindgen",
+]
+
+[[package]]
+name = "which"
+version = "4.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87ba24419a2078cd2b0f2ede2691b6c66d8e47836da3b6db8265ebad47afbfc7"
+dependencies = [
+ "either",
+ "home",
+ "once_cell",
+ "rustix 0.38.44",
 ]
 
 [[package]]

spacedust/Cargo.toml

···
 links = { path = "../links" }
 log = "0.4.27"
 metrics = "0.24.2"
+metrics-exporter-prometheus = { version = "0.17.1", features = ["http-listener"] }
 rand = "0.9.1"
 schemars = "0.8.22"
 semver = "1.0.26"

spacedust/src/main.rs

···
 use spacedust::server;
 
 use clap::Parser;
+use metrics_exporter_prometheus::PrometheusBuilder;
 use tokio::sync::broadcast;
 use tokio_util::sync::CancellationToken;
 
···
 
     let args = Args::parse();
 
+    if let Err(e) = install_metrics_server() {
+        log::error!("failed to install metrics server: {e:?}");
+    };
+
     let server_shutdown = shutdown.clone();
     let serving = tokio::spawn(async move {
         server::serve(b, server_shutdown).await
···
 
     Ok(())
 }
+
+fn install_metrics_server() -> Result<(), metrics_exporter_prometheus::BuildError> {
+    log::info!("installing metrics server...");
+    let host = [0, 0, 0, 0];
+    let port = 8765;
+    PrometheusBuilder::new()
+        .set_quantiles(&[0.5, 0.9, 0.99, 1.0])?
+        .set_bucket_duration(std::time::Duration::from_secs(60))?
+        .set_bucket_count(std::num::NonZero::new(10).unwrap()) // count * duration = 10 mins. stuff doesn't happen that fast here.
+        .set_enable_unit_suffix(false) // this seemed buggy for constellation (sometimes wouldn't engage)
+        .with_http_listener((host, port))
+        .install()?;
+    log::info!(
+        "metrics server installed! listening on http://{}.{}.{}.{}:{port}",
+        host[0],
+        host[1],
+        host[2],
+        host[3]
+    );
+    Ok(())
+}