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api.rs
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api.rs
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use macros_rs::fmtstr;
use pmc::{config, process::Runner};
use serde::Serialize;
use std::convert::Infallible;
use warp::{
http::StatusCode,
path, reject,
reply::{self, json},
Filter, Rejection, Reply,
};
#[derive(Serialize)]
struct ErrorMessage {
code: u16,
message: String,
}
pub async fn start() {
let config = config::read().daemon.api;
let health = path!("metrics").and_then(metrics_handler);
let list = path!("list").and_then(list_handler);
let info = path!("info" / usize).and_then(|id| info_handler(id));
let routes = warp::get().and(health.or(list).or(info)).recover(handle_rejection);
if config.secure.enabled {
let auth = warp::header::exact("authorization", fmtstr!("token {}", config.secure.token));
warp::serve(routes.and(auth)).run(config::read().get_address()).await
} else {
warp::serve(routes).run(config::read().get_address()).await
}
}
#[inline]
async fn list_handler() -> Result<impl Reply, Infallible> { Ok(json(&Runner::new().json())) }
#[inline]
async fn metrics_handler() -> Result<impl Reply, Infallible> {
let response =
serde_json::json!({
"healthy": true,
"version": {
"pkg": format!("v{}", env!("CARGO_PKG_VERSION")),
"hash": env!("GIT_HASH"),
"build_date": env!("BUILD_DATE"),
"target": env!("PROFILE"),
},
"daemon": {}
});
Ok(json(&response))
}
#[inline]
async fn info_handler(id: usize) -> Result<impl Reply, Rejection> {
match Runner::new().info(id) {
Some(item) => Ok(json(&item.clone().json())),
None => Err(reject::not_found()),
}
}
async fn handle_rejection(err: Rejection) -> Result<impl Reply, Infallible> {
let code;
let message;
if err.is_not_found() {
code = StatusCode::NOT_FOUND;
message = "NOT_FOUND";
} else if let Some(_) = err.find::<warp::reject::MethodNotAllowed>() {
code = StatusCode::METHOD_NOT_ALLOWED;
message = "METHOD_NOT_ALLOWED";
} else {
log!("(API) unhandled rejection: {:?}", err);
code = StatusCode::INTERNAL_SERVER_ERROR;
message = "UNHANDLED_REJECTION";
}
let json = json(&ErrorMessage {
code: code.as_u16(),
message: message.into(),
});
Ok(reply::with_status(json, code))
}

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