2019-04-23 21:06:35 +00:00
|
|
|
extern crate serde_json;
|
|
|
|
|
#[macro_use]
|
|
|
|
|
extern crate failure;
|
|
|
|
|
use clap;
|
|
|
|
|
use clap::Arg;
|
|
|
|
|
use futures::future::{done, ok, Either, Future};
|
|
|
|
|
use http::StatusCode;
|
|
|
|
|
use hyper::service::service_fn;
|
|
|
|
|
use hyper::{Body, Request, Response, Server};
|
|
|
|
|
use log::{error, info, trace};
|
|
|
|
|
use std::env;
|
|
|
|
|
mod options;
|
|
|
|
|
use options::Options;
|
|
|
|
|
mod exporter_error;
|
|
|
|
|
use exporter_error::ExporterError;
|
|
|
|
|
mod render_to_prometheus;
|
|
|
|
|
use render_to_prometheus::RenderToPrometheus;
|
|
|
|
|
mod wireguard;
|
|
|
|
|
use std::convert::TryFrom;
|
|
|
|
|
use std::process::Command;
|
|
|
|
|
use std::string::String;
|
|
|
|
|
use wireguard::WireGuard;
|
2019-05-15 14:55:07 +00:00
|
|
|
mod wireguard_config;
|
2019-05-20 08:09:02 +00:00
|
|
|
use wireguard_config::peer_entry_hashmap_try_from;
|
2019-04-23 21:06:35 +00:00
|
|
|
|
|
|
|
|
fn check_compliance(req: &Request<Body>) -> Result<(), Response<Body>> {
|
|
|
|
|
if req.uri() != "/metrics" {
|
|
|
|
|
trace!("uri not allowed {}", req.uri());
|
|
|
|
|
Err(Response::builder()
|
|
|
|
|
.status(StatusCode::NOT_FOUND)
|
|
|
|
|
.body(hyper::Body::empty())
|
|
|
|
|
.unwrap())
|
|
|
|
|
} else if req.method() != "GET" {
|
|
|
|
|
trace!("method not allowed {}", req.method());
|
|
|
|
|
Err(Response::builder()
|
|
|
|
|
.status(StatusCode::METHOD_NOT_ALLOWED)
|
|
|
|
|
.body(hyper::Body::empty())
|
|
|
|
|
.unwrap())
|
|
|
|
|
} else {
|
|
|
|
|
Ok(())
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn handle_request(
|
|
|
|
|
req: Request<Body>,
|
|
|
|
|
options: Options,
|
|
|
|
|
) -> impl Future<Item = Response<Body>, Error = failure::Error> {
|
|
|
|
|
trace!("{:?}", req);
|
|
|
|
|
|
|
|
|
|
done(check_compliance(&req)).then(move |res| match res {
|
|
|
|
|
Ok(_) => Either::A(perform_request(req, &options).then(|res| match res {
|
|
|
|
|
Ok(body) => ok(body),
|
|
|
|
|
Err(err) => {
|
|
|
|
|
error!("internal server error: {:?}", err);
|
|
|
|
|
ok(Response::builder()
|
|
|
|
|
.status(StatusCode::INTERNAL_SERVER_ERROR)
|
|
|
|
|
.body(hyper::Body::empty())
|
|
|
|
|
.unwrap())
|
|
|
|
|
}
|
|
|
|
|
})),
|
|
|
|
|
Err(err) => Either::B(ok(err)),
|
|
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
|
2019-05-20 07:45:20 +00:00
|
|
|
fn wg_with_text(
|
|
|
|
|
wg_config_str: &str,
|
|
|
|
|
wg_output: ::std::process::Output,
|
|
|
|
|
) -> Result<Response<Body>, ExporterError> {
|
2019-05-20 08:09:02 +00:00
|
|
|
let pehm = peer_entry_hashmap_try_from(wg_config_str)?;
|
|
|
|
|
trace!("pehm == {:?}", pehm);
|
2019-05-20 07:45:20 +00:00
|
|
|
|
|
|
|
|
let wg_output_string = String::from_utf8(wg_output.stdout)?;
|
|
|
|
|
let wg = WireGuard::try_from(&wg_output_string as &str)?;
|
2019-05-20 08:21:32 +00:00
|
|
|
Ok(Response::new(Body::from(wg.render_with_names(Some(&pehm)))))
|
2019-05-20 07:45:20 +00:00
|
|
|
}
|
|
|
|
|
|
2019-04-23 21:06:35 +00:00
|
|
|
fn perform_request(
|
|
|
|
|
_req: Request<Body>,
|
2019-05-17 17:32:35 +00:00
|
|
|
options: &Options,
|
2019-04-23 21:06:35 +00:00
|
|
|
) -> impl Future<Item = Response<Body>, Error = ExporterError> {
|
|
|
|
|
trace!("perform_request");
|
|
|
|
|
|
2019-05-17 17:32:35 +00:00
|
|
|
// this is needed to satisfy the borrow checker
|
|
|
|
|
let options = options.clone();
|
|
|
|
|
|
2019-04-23 21:06:35 +00:00
|
|
|
done(
|
|
|
|
|
Command::new("wg")
|
|
|
|
|
.arg("show")
|
|
|
|
|
.arg("all")
|
|
|
|
|
.arg("dump")
|
|
|
|
|
.output(),
|
|
|
|
|
)
|
|
|
|
|
.from_err()
|
|
|
|
|
.and_then(|output| {
|
2019-05-17 17:32:35 +00:00
|
|
|
if let Some(extract_names_config_file) = options.extract_names_config_file {
|
|
|
|
|
Either::A(
|
2019-05-20 07:45:20 +00:00
|
|
|
done(::std::fs::read_to_string(extract_names_config_file))
|
2019-05-17 17:32:35 +00:00
|
|
|
.from_err()
|
2019-05-20 07:45:20 +00:00
|
|
|
.and_then(|wg_config_string| wg_with_text(&wg_config_string as &str, output)),
|
2019-05-17 17:32:35 +00:00
|
|
|
)
|
|
|
|
|
} else {
|
|
|
|
|
Either::B(
|
|
|
|
|
done(String::from_utf8(output.stdout))
|
2019-04-23 21:06:35 +00:00
|
|
|
.from_err()
|
2019-05-17 17:32:35 +00:00
|
|
|
.and_then(|output_str| {
|
|
|
|
|
trace!("{}", output_str);
|
|
|
|
|
done(WireGuard::try_from(&output_str as &str))
|
|
|
|
|
.from_err()
|
|
|
|
|
.and_then(|wg| ok(Response::new(Body::from(wg.render()))))
|
|
|
|
|
}),
|
|
|
|
|
)
|
|
|
|
|
}
|
2019-04-23 21:06:35 +00:00
|
|
|
})
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn main() {
|
|
|
|
|
let matches = clap::App::new("prometheus_wireguard_exporter")
|
2019-05-20 08:09:02 +00:00
|
|
|
.version("1.2.0")
|
2019-04-23 21:06:35 +00:00
|
|
|
.author("Francesco Cogno <francesco.cogno@outlook.com>")
|
|
|
|
|
.arg(
|
|
|
|
|
Arg::with_name("port")
|
|
|
|
|
.short("p")
|
2019-05-17 17:32:35 +00:00
|
|
|
.help("exporter port")
|
2019-04-23 21:06:35 +00:00
|
|
|
.default_value("9576")
|
|
|
|
|
.takes_value(true),
|
|
|
|
|
)
|
|
|
|
|
.arg(
|
|
|
|
|
Arg::with_name("verbose")
|
|
|
|
|
.short("v")
|
|
|
|
|
.help("verbose logging")
|
|
|
|
|
.takes_value(false),
|
|
|
|
|
)
|
2019-05-17 17:32:35 +00:00
|
|
|
.arg(
|
|
|
|
|
Arg::with_name("extract_names_config_file")
|
|
|
|
|
.short("n")
|
|
|
|
|
.help("If set, the exporter will look in the specified WireGuard config file for peer names (must be in [Peer] definition and be a comment)")
|
|
|
|
|
.takes_value(true))
|
2019-04-23 21:06:35 +00:00
|
|
|
.get_matches();
|
|
|
|
|
|
|
|
|
|
let options = Options::from_claps(&matches);
|
|
|
|
|
|
|
|
|
|
if options.verbose {
|
|
|
|
|
env::set_var("RUST_LOG", "prometheus_wireguard_exporter=trace");
|
|
|
|
|
} else {
|
|
|
|
|
env::set_var("RUST_LOG", "prometheus_wireguard_exporter=info");
|
|
|
|
|
}
|
|
|
|
|
env_logger::init();
|
|
|
|
|
|
|
|
|
|
info!("using options: {:?}", options);
|
|
|
|
|
|
|
|
|
|
let bind = matches.value_of("port").unwrap();
|
|
|
|
|
let bind = u16::from_str_radix(&bind, 10).expect("port must be a valid number");
|
|
|
|
|
let addr = ([0, 0, 0, 0], bind).into();
|
|
|
|
|
|
|
|
|
|
info!("starting exporter on {}", addr);
|
|
|
|
|
|
|
|
|
|
let new_svc = move || {
|
|
|
|
|
let options = options.clone();
|
|
|
|
|
service_fn(move |req| handle_request(req, options.clone()))
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
let server = Server::bind(&addr)
|
|
|
|
|
.serve(new_svc)
|
|
|
|
|
.map_err(|e| eprintln!("server error: {}", e));
|
|
|
|
|
hyper::rt::run(server);
|
|
|
|
|
}
|
