Also listen for http requests and serve metrics
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Use axum to listen for http requests to respond with the metrics.
This commit is contained in:
finga 2022-04-23 20:52:11 +02:00
parent 52f1452613
commit b20ed73290
3 changed files with 480 additions and 2 deletions

434
Cargo.lock generated
View file

@ -38,6 +38,17 @@ version = "1.0.57"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "08f9b8508dccb7687a1d6c4ce66b2b0ecef467c94667de27d8d7fe1f8d2a9cdc"
[[package]]
name = "async-trait"
version = "0.1.53"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed6aa3524a2dfcf9fe180c51eae2b58738348d819517ceadf95789c51fff7600"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "atty"
version = "0.2.14"
@ -55,12 +66,63 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
[[package]]
name = "axum"
version = "0.5.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f523b4e98ba6897ae90994bc18423d9877c54f9047b06a00ddc8122a957b1c70"
dependencies = [
"async-trait",
"axum-core",
"bitflags",
"bytes",
"futures-util",
"http",
"http-body",
"hyper",
"itoa",
"matchit",
"memchr",
"mime",
"percent-encoding",
"pin-project-lite",
"serde",
"serde_json",
"serde_urlencoded",
"sync_wrapper",
"tokio",
"tower",
"tower-http",
"tower-layer",
"tower-service",
]
[[package]]
name = "axum-core"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d3ddbd16eabff8b45f21b98671fddcc93daaa7ac4c84f8473693437226040de5"
dependencies = [
"async-trait",
"bytes",
"futures-util",
"http",
"http-body",
"mime",
]
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bytes"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
[[package]]
name = "cc"
version = "1.0.73"
@ -86,6 +148,61 @@ dependencies = [
"termcolor",
]
[[package]]
name = "fnv"
version = "1.0.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
[[package]]
name = "form_urlencoded"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
dependencies = [
"matches",
"percent-encoding",
]
[[package]]
name = "futures-channel"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
dependencies = [
"futures-core",
]
[[package]]
name = "futures-core"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
[[package]]
name = "futures-sink"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "21163e139fa306126e6eedaf49ecdb4588f939600f0b1e770f4205ee4b7fa868"
[[package]]
name = "futures-task"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
[[package]]
name = "futures-util"
version = "0.3.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
dependencies = [
"futures-core",
"futures-task",
"pin-project-lite",
"pin-utils",
]
[[package]]
name = "hermit-abi"
version = "0.1.19"
@ -95,12 +212,87 @@ dependencies = [
"libc",
]
[[package]]
name = "http"
version = "0.2.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "31f4c6746584866f0feabcc69893c5b51beef3831656a968ed7ae254cdc4fd03"
dependencies = [
"bytes",
"fnv",
"itoa",
]
[[package]]
name = "http-body"
version = "0.4.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ff4f84919677303da5f147645dbea6b1881f368d03ac84e1dc09031ebd7b2c6"
dependencies = [
"bytes",
"http",
"pin-project-lite",
]
[[package]]
name = "http-range-header"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0bfe8eed0a9285ef776bb792479ea3834e8b94e13d615c2f66d03dd50a435a29"
[[package]]
name = "httparse"
version = "1.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6330e8a36bd8c859f3fa6d9382911fbb7147ec39807f63b923933a247240b9ba"
[[package]]
name = "httpdate"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
[[package]]
name = "humantime"
version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
[[package]]
name = "hyper"
version = "0.14.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b26ae0a80afebe130861d90abf98e3814a4f28a4c6ffeb5ab8ebb2be311e0ef2"
dependencies = [
"bytes",
"futures-channel",
"futures-core",
"futures-util",
"http",
"http-body",
"httparse",
"httpdate",
"itoa",
"pin-project-lite",
"socket2",
"tokio",
"tower-service",
"tracing",
"want",
]
[[package]]
name = "itoa"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
[[package]]
name = "lazy_static"
version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
[[package]]
name = "libc"
version = "0.2.124"
@ -154,6 +346,18 @@ dependencies = [
"libc",
]
[[package]]
name = "matches"
version = "0.1.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
[[package]]
name = "matchit"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "73cbba799671b762df5a175adf59ce145165747bb891505c43d09aefbbf38beb"
[[package]]
name = "memchr"
version = "2.4.1"
@ -174,12 +378,42 @@ name = "mightyohm-gc-exporter"
version = "0.1.0-dev"
dependencies = [
"anyhow",
"axum",
"env_logger",
"log",
"serialport",
"tokio",
]
[[package]]
name = "mime"
version = "0.3.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
[[package]]
name = "mio"
version = "0.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "52da4364ffb0e4fe33a9841a98a3f3014fb964045ce4f7a45a398243c8d6b0c9"
dependencies = [
"libc",
"log",
"miow",
"ntapi",
"wasi",
"winapi",
]
[[package]]
name = "miow"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
dependencies = [
"winapi",
]
[[package]]
name = "nix"
version = "0.23.1"
@ -193,6 +427,15 @@ dependencies = [
"memoffset",
]
[[package]]
name = "ntapi"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c28774a7fd2fbb4f0babd8237ce554b73af68021b5f695a3cebd6c59bac0980f"
dependencies = [
"winapi",
]
[[package]]
name = "num_cpus"
version = "1.13.1"
@ -203,12 +446,44 @@ dependencies = [
"libc",
]
[[package]]
name = "percent-encoding"
version = "2.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
[[package]]
name = "pin-project"
version = "1.0.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
dependencies = [
"pin-project-internal",
]
[[package]]
name = "pin-project-internal"
version = "1.0.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "pin-project-lite"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e280fbe77cc62c91527259e9442153f4688736748d24660126286329742b4c6c"
[[package]]
name = "pin-utils"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
[[package]]
name = "pkg-config"
version = "0.3.25"
@ -250,6 +525,41 @@ version = "0.6.25"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
[[package]]
name = "ryu"
version = "1.0.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "73b4b750c782965c211b42f022f59af1fbceabdd026623714f104152f1ec149f"
[[package]]
name = "serde"
version = "1.0.136"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce31e24b01e1e524df96f1c2fdd054405f8d7376249a5110886fb4b658484789"
[[package]]
name = "serde_json"
version = "1.0.79"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95"
dependencies = [
"itoa",
"ryu",
"serde",
]
[[package]]
name = "serde_urlencoded"
version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d3491c14715ca2294c4d6a88f15e84739788c1d030eed8c110436aafdaa2f3fd"
dependencies = [
"form_urlencoded",
"itoa",
"ryu",
"serde",
]
[[package]]
name = "serialport"
version = "4.1.0"
@ -267,6 +577,16 @@ dependencies = [
"winapi",
]
[[package]]
name = "socket2"
version = "0.4.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "66d72b759436ae32898a2af0a14218dbf55efde3feeb170eb623637db85ee1e0"
dependencies = [
"libc",
"winapi",
]
[[package]]
name = "syn"
version = "1.0.91"
@ -278,6 +598,12 @@ dependencies = [
"unicode-xid",
]
[[package]]
name = "sync_wrapper"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "20518fe4a4c9acf048008599e464deb21beeae3d3578418951a189c235a7a9a8"
[[package]]
name = "termcolor"
version = "1.1.3"
@ -293,9 +619,13 @@ version = "1.17.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2af73ac49756f3f7c01172e34a23e5d0216f6c32333757c2c61feb2bbff5a5ee"
dependencies = [
"libc",
"mio",
"num_cpus",
"pin-project-lite",
"socket2",
"tokio-macros",
"winapi",
]
[[package]]
@ -309,12 +639,116 @@ dependencies = [
"syn",
]
[[package]]
name = "tokio-util"
version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0edfdeb067411dba2044da6d1cb2df793dd35add7888d73c16e3381ded401764"
dependencies = [
"bytes",
"futures-core",
"futures-sink",
"pin-project-lite",
"tokio",
]
[[package]]
name = "tower"
version = "0.4.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9a89fd63ad6adf737582df5db40d286574513c69a11dac5214dc3b5603d6713e"
dependencies = [
"futures-core",
"futures-util",
"pin-project",
"pin-project-lite",
"tokio",
"tokio-util",
"tower-layer",
"tower-service",
"tracing",
]
[[package]]
name = "tower-http"
version = "0.2.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aba3f3efabf7fb41fae8534fc20a817013dd1c12cb45441efb6c82e6556b4cd8"
dependencies = [
"bitflags",
"bytes",
"futures-core",
"futures-util",
"http",
"http-body",
"http-range-header",
"pin-project-lite",
"tower",
"tower-layer",
"tower-service",
]
[[package]]
name = "tower-layer"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "343bc9466d3fe6b0f960ef45960509f84480bf4fd96f92901afe7ff3df9d3a62"
[[package]]
name = "tower-service"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
[[package]]
name = "tracing"
version = "0.1.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5d0ecdcb44a79f0fe9844f0c4f33a342cbcbb5117de8001e6ba0dc2351327d09"
dependencies = [
"cfg-if",
"log",
"pin-project-lite",
"tracing-core",
]
[[package]]
name = "tracing-core"
version = "0.1.26"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f54c8ca710e81886d498c2fd3331b56c93aa248d49de2222ad2742247c60072f"
dependencies = [
"lazy_static",
]
[[package]]
name = "try-lock"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
[[package]]
name = "unicode-xid"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
[[package]]
name = "want"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
dependencies = [
"log",
"try-lock",
]
[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
[[package]]
name = "winapi"
version = "0.3.9"

View file

@ -14,3 +14,4 @@ serialport = "4.1"
log = "0.4"
env_logger = "0.9"
tokio = { version = "1.17", features = ["rt-multi-thread", "macros"] }
axum = "0.5"

View file

@ -1,7 +1,9 @@
use anyhow::{bail, Error, Result};
use log::{debug, trace};
use axum::{extract::Extension, routing::get, Router, Server};
use log::{debug, info, trace};
use std::{
io::{BufRead, BufReader},
net::SocketAddr,
str::FromStr,
sync::{
atomic::{AtomicU32, AtomicUsize, Ordering},
@ -21,6 +23,11 @@ impl AtomicF32 {
let as_u32 = value.to_bits();
self.storage.store(as_u32, ordering);
}
fn load(&self, ordering: Ordering) -> f32 {
let as_u32 = self.storage.load(ordering);
f32::from_bits(as_u32)
}
}
#[derive(Debug)]
@ -99,6 +106,39 @@ async fn listen_serial(metrics: Arc<Metrics>) -> Result<()> {
}
}
#[allow(clippy::unused_async)]
async fn get_metrics(Extension(metrics): Extension<Arc<Metrics>>) -> String {
format!(
r"# HELP mightyohm_gc_cps Counts per second.
# TYPE mightyohm_gc_cps gauge
mightyohm_gc_cps {}
# HELP mightyohm_gc_cpm Counts per minute.
# TYPE mightyohm_gc_cpm gauge
mightyohm_gc_cpm {}
# HELP mightyohm_gc_radiation Ionizing Radiation in μSv/h.
# TYPE mightyohm_gc_radiation gauge
mightyohm_gc_radiation {}
# HELP mightyohm_gc_mode Data acquisition mode (0 = Slow, 1 = Fast, 2 = Inst).
# TYPE mightyohm_gc_mode gauge
mightyohm_gc_mode {}
",
metrics.cps.load(Ordering::Relaxed),
metrics.cpm.load(Ordering::Relaxed),
metrics.radiation.load(Ordering::Relaxed),
metrics.mode.load(Ordering::Relaxed)
)
}
async fn listen_http(metrics: Arc<Metrics>) -> Result<()> {
let app = Router::new()
.route("/metrics", get(get_metrics))
.layer(Extension(metrics));
let addr = SocketAddr::from(([0, 0, 0, 0], 9111));
info!("Listening on 0.0.0.0:9111");
Ok(Server::bind(&addr).serve(app.into_make_service()).await?)
}
async fn flatten<T>(handle: JoinHandle<Result<T>>) -> Result<T>
where
T: Send,
@ -115,7 +155,10 @@ async fn main() -> Result<()> {
env_logger::init();
let metrics = Arc::new(Metrics::default());
try_join!(flatten(spawn(listen_serial(Arc::clone(&metrics)))))?;
try_join!(
flatten(spawn(listen_serial(Arc::clone(&metrics)))),
flatten(spawn(listen_http(Arc::clone(&metrics))))
)?;
Ok(())
}