diff --git a/Cargo.lock b/Cargo.lock
index 26bdf37..0d1aeb8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
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+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2819ce041d2ee131036f4fc9d6ae7ae125a3a40e97ba64d04fe799ad9dabbb44"
+dependencies = [
+ "libc",
+]
+
[[package]]
name = "once_cell"
version = "1.14.0"
@@ -246,12 +801,24 @@ dependencies = [
"windows-sys",
]
+[[package]]
+name = "paste"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1de2e551fb905ac83f73f7aedf2f0cb4a0da7e35efa24a202a936269f1f18e1"
+
[[package]]
name = "path-slash"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e91099d4268b0e11973f036e885d652fb0b21fedcf69738c627f94db6a44f42"
+[[package]]
+name = "percent-encoding"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
+
[[package]]
name = "pin-project-lite"
version = "0.2.9"
@@ -264,6 +831,12 @@ version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
+[[package]]
+name = "ppv-lite86"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+
[[package]]
name = "proc-macro2"
version = "1.0.43"
@@ -305,6 +878,36 @@ dependencies = [
"proc-macro2",
]
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom",
+]
+
[[package]]
name = "redox_syscall"
version = "0.2.16"
@@ -314,6 +917,38 @@ dependencies = [
"bitflags",
]
+[[package]]
+name = "regex"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.6.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"
+
+[[package]]
+name = "rustc_version"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+dependencies = [
+ "semver",
+]
+
+[[package]]
+name = "ryu"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4501abdff3ae82a1c1b477a17252eb69cee9e66eb915c1abaa4f44d873df9f09"
+
[[package]]
name = "same-file"
version = "1.0.6"
@@ -329,6 +964,52 @@ version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
+[[package]]
+name = "semver"
+version = "1.0.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93f6841e709003d68bb2deee8c343572bf446003ec20a583e76f7b15cebf3711"
+
+[[package]]
+name = "serde"
+version = "1.0.144"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f747710de3dcd43b88c9168773254e809d8ddbdf9653b84e2554ab219f17860"
+
+[[package]]
+name = "serde_json"
+version = "1.0.85"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
+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 = "sha1"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "006769ba83e921b3085caa8334186b00cf92b4cb1a6cf4632fbccc8eff5c7549"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
[[package]]
name = "signal-hook-registry"
version = "1.4.0"
@@ -374,6 +1055,39 @@ dependencies = [
"unicode-ident",
]
+[[package]]
+name = "time"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c3f9a28b618c3a6b9251b6908e9c99e04b9e5c02e6581ccbb67d59c34ef7f9b"
+dependencies = [
+ "itoa",
+ "libc",
+ "num_threads",
+ "time-macros",
+]
+
+[[package]]
+name = "time-macros"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42657b1a6f4d817cda8e7a0ace261fe0cc946cf3a80314390b22cc61ae080792"
+
+[[package]]
+name = "tinyvec"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87cc5ceb3875bb20c2890005a4e226a4651264a5c75edb2421b52861a0a0cb50"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
+
[[package]]
name = "tokio"
version = "1.21.0"
@@ -386,6 +1100,7 @@ dependencies = [
"memchr",
"mio",
"once_cell",
+ "parking_lot",
"pin-project-lite",
"signal-hook-registry",
"socket2",
@@ -404,12 +1119,85 @@ dependencies = [
"syn",
]
+[[package]]
+name = "tokio-util"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bb2e075f03b3d66d8d8785356224ba688d2906a371015e225beeb65ca92c740"
+dependencies = [
+ "bytes",
+ "futures-core",
+ "futures-sink",
+ "pin-project-lite",
+ "tokio",
+ "tracing",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2fce9567bd60a67d08a16488756721ba392f24f29006402881e43b19aac64307"
+dependencies = [
+ "cfg-if",
+ "log",
+ "pin-project-lite",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aeea4303076558a00714b823f9ad67d58a3bbda1df83d8827d21193156e22f7"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "typenum"
+version = "1.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
+
+[[package]]
+name = "unicode-bidi"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"
+
[[package]]
name = "unicode-ident"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
+[[package]]
+name = "unicode-normalization"
+version = "0.1.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "854cbdc4f7bc6ae19c820d44abdc3277ac3e1b2b93db20a636825d9322fb60e6"
+dependencies = [
+ "tinyvec",
+]
+
+[[package]]
+name = "url"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d68c799ae75762b8c3fe375feb6600ef5602c883c5d21eb51c09f22b83c4643"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+]
+
+[[package]]
+name = "version_check"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+
[[package]]
name = "walkdir"
version = "2.3.2"
@@ -500,3 +1288,32 @@ name = "windows_x86_64_msvc"
version = "0.36.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
+
+[[package]]
+name = "zstd"
+version = "0.11.2+zstd.1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20cc960326ece64f010d2d2107537f26dc589a6573a316bd5b1dba685fa5fde4"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "5.0.2+zstd.1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d2a5585e04f9eea4b2a3d1eca508c4dee9592a89ef6f450c11719da0726f4db"
+dependencies = [
+ "libc",
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.1+zstd.1.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fd07cbbc53846d9145dbffdf6dd09a7a0aa52be46741825f5c97bdd4f73f12b"
+dependencies = [
+ "cc",
+ "libc",
+]
diff --git a/Cargo.toml b/Cargo.toml
index 8cd9516..624b600 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,8 @@ path = "src/main.rs"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
-prometheus-client = "0.18.0"
-tokio = { version = "1", features = ["rt", "macros", "signal"] }
+actix-web = "4.1.0"
linemux = "0.2.4"
path-slash = "0.2.1"
+prometheus-client = "0.18.0"
+tokio = { version = "1", features = ["rt", "macros", "signal"] }
diff --git a/src/apache_metrics.rs b/src/apache_metrics.rs
new file mode 100644
index 0000000..dc89f42
--- /dev/null
+++ b/src/apache_metrics.rs
@@ -0,0 +1,12 @@
+use prometheus_client::registry::Registry;
+
+#[derive(Clone)]
+pub struct ApacheMetrics {}
+
+impl ApacheMetrics {
+ pub fn new() -> (Registry, ApacheMetrics) {
+ let mut registry = <Registry>::default();
+ let metrics = ApacheMetrics {};
+ return (registry, metrics);
+ }
+}
diff --git a/src/log_watcher.rs b/src/log_watcher.rs
index 2e80e9a..9d3a916 100644
--- a/src/log_watcher.rs
+++ b/src/log_watcher.rs
@@ -6,16 +6,17 @@ use std::path::PathBuf;
use linemux::MuxedLines;
use tokio::sync::mpsc::UnboundedSender;
+use crate::ApacheMetrics;
use crate::log_file_pattern::LogFilePath;
-pub async fn read_logs_task(log_files: Vec<LogFilePath>, shutdown_send: UnboundedSender<()>) {
- if let Err(error) = read_logs(log_files).await {
+pub async fn read_logs_task(log_files: Vec<LogFilePath>, metrics: ApacheMetrics, shutdown_send: UnboundedSender<()>) {
+ if let Err(error) = read_logs(log_files, metrics).await {
println!("[LogWatcher] Error reading logs: {}", error);
shutdown_send.send(()).unwrap();
}
}
-async fn read_logs(log_files: Vec<LogFilePath>) -> io::Result<()> {
+async fn read_logs(log_files: Vec<LogFilePath>, metrics: ApacheMetrics) -> io::Result<()> {
let mut file_reader = MuxedLines::new()?;
let mut label_lookup: HashMap<PathBuf, &String> = HashMap::new();
diff --git a/src/main.rs b/src/main.rs
index dd363cd..21fbe46 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,14 +1,23 @@
+use std::env;
+use std::sync::Mutex;
+
use tokio::signal;
use tokio::sync::mpsc;
+use crate::apache_metrics::ApacheMetrics;
use crate::log_file_pattern::parse_log_file_pattern_from_env;
use crate::log_watcher::read_logs_task;
+use crate::web_server::{create_web_server, run_web_server};
mod log_file_pattern;
mod log_watcher;
+mod apache_metrics;
+mod web_server;
#[tokio::main(flavor = "current_thread")]
async fn main() {
+ let host = env::var("HTTP_HOST").unwrap_or(String::from("127.0.0.1"));
+
println!("Initializing exporter...");
let log_file_pattern = match parse_log_file_pattern_from_env() {
@@ -36,8 +45,11 @@ async fn main() {
println!("Found log file: {} (label \"{}\")", log_file.path.display(), log_file.label);
}
+ let (metrics_registry, metrics) = ApacheMetrics::new();
let (shutdown_send, mut shutdown_recv) = mpsc::unbounded_channel();
- tokio::spawn(read_logs_task(log_files, shutdown_send.clone()));
+
+ tokio::spawn(read_logs_task(log_files, metrics.clone(), shutdown_send.clone()));
+ tokio::spawn(run_web_server(create_web_server(host.as_str(), 9240, Mutex::new(metrics_registry))));
drop(shutdown_send);
diff --git a/src/web_server.rs b/src/web_server.rs
new file mode 100644
index 0000000..3477385
--- /dev/null
+++ b/src/web_server.rs
@@ -0,0 +1,54 @@
+use std::str;
+use std::sync::Mutex;
+use std::time::Duration;
+
+use actix_web::{App, HttpResponse, HttpServer, Result, web};
+use actix_web::dev::Server;
+use prometheus_client::encoding::text::encode;
+use prometheus_client::registry::Registry;
+
+//noinspection HttpUrlsUsage
+pub fn create_web_server(host: &str, port: u16, metrics_registry: Mutex<Registry>) -> Server {
+ let metrics_registry = web::Data::new(metrics_registry);
+
+ let server = HttpServer::new(move || {
+ App::new()
+ .app_data(metrics_registry.clone())
+ .service(web::resource("/metrics").route(web::get().to(metrics_handler)))
+ });
+
+ let server = server.keep_alive(Duration::from_secs(60));
+ let server = server.shutdown_timeout(0);
+ let server = server.disable_signals();
+ let server = server.workers(1);
+ let server = server.bind((host, port));
+
+ println!("[WebServer] Starting web server on http://{}:{}", host, port);
+ return server.unwrap().run();
+}
+
+pub async fn run_web_server(server: Server) {
+ if let Err(e) = server.await {
+ println!("[WebServer] Error running web server: {}", e);
+ }
+}
+
+async fn metrics_handler(metrics_registry: web::Data<Mutex<Registry>>) -> Result<HttpResponse> {
+ let mut buf = Vec::new();
+
+ {
+ if let Ok(metrics_registry) = metrics_registry.lock() {
+ encode(&mut buf, &metrics_registry)?;
+ } else {
+ println!("[WebServer] Failed acquiring lock on registry.");
+ return Ok(HttpResponse::InternalServerError().body(""));
+ }
+ }
+
+ if let Ok(buf) = String::from_utf8(buf) {
+ Ok(HttpResponse::Ok().content_type("application/openmetrics-text; version=1.0.0; charset=utf-8").body(buf))
+ } else {
+ println!("[WebServer] Failed converting buffer to UTF-8.");
+ Ok(HttpResponse::InternalServerError().body(""))
+ }
+}