implement config file watching

This commit is contained in:
Edward Shen 2019-12-21 14:04:13 -05:00
parent 65259ce6cd
commit 606620ae6a
Signed by: edward
GPG key ID: F350507060ED6C90
3 changed files with 163 additions and 61 deletions

149
Cargo.lock generated
View file

@ -50,7 +50,7 @@ dependencies = [
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@ -66,7 +66,7 @@ dependencies = [
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@ -87,7 +87,7 @@ dependencies = [
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@ -208,7 +208,7 @@ dependencies = [
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@ -216,7 +216,7 @@ dependencies = [
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@ -631,7 +660,7 @@ name = "hashbrown"
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@ -645,7 +674,7 @@ dependencies = [
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@ -660,6 +689,15 @@ dependencies = [
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"checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
"checksum language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
"checksum lazycell 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
"checksum libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)" = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
"checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
"checksum lock_api 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e57b3997725d2b60dbec1297f6c2e2957cc383db1cebd6be812163f969c7d586"
@ -1815,9 +1912,11 @@ dependencies = [
"checksum miniz-sys 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "1e9e3ae51cea1576ceba0dde3d484d30e6e5b86dee0b2d412fe3a16a15c98202"
"checksum miniz_oxide 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6f3f74f726ae935c3f514300cc6773a0c9492abc5e972d42ba0c0ebb88757625"
"checksum mio 0.6.21 (registry+https://github.com/rust-lang/crates.io-index)" = "302dec22bcf6bae6dfb69c647187f4b4d0fb6f535521f7bc022430ce8e12008f"
"checksum mio-extras 2.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "52403fe290012ce777c4626790c8951324a2b9e3316b3143779c72b029742f19"
"checksum mio-uds 0.6.7 (registry+https://github.com/rust-lang/crates.io-index)" = "966257a94e196b11bb43aca423754d87429960a768de9414f3691d6957abf125"
"checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
"checksum net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)" = "42550d9fb7b6684a6d404d9fa7250c2eb2646df731d1c06afc06dcee9e1bcf88"
"checksum notify 4.0.14 (registry+https://github.com/rust-lang/crates.io-index)" = "199628fc33b21bc767baa057490b00b382ecbae030803a7b36292422d15b778b"
"checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
"checksum num-traits 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)" = "d4c81ffc11c212fa327657cb19dd85eb7419e163b5b076bede2bdb5c974c07e4"
"checksum num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)" = "76dac5ed2a876980778b8b85f75a71b6cbf0db0b1232ee12f826bccb00d09d72"
@ -1863,8 +1962,8 @@ dependencies = [
"checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
"checksum serde 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "1217f97ab8e8904b57dd22eb61cde455fa7446a9c1cf43966066da047c1f3702"
"checksum serde_derive 1.0.103 (registry+https://github.com/rust-lang/crates.io-index)" = "a8c6faef9a2e64b0064f48570289b4bf8823b7581f1d6157c1b52152306651d0"
"checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
"checksum serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
"checksum serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)" = "48c575e0cc52bdd09b47f330f646cf59afc586e9c4e3ccd6fc1f625b8ea1dad7"
"checksum serde_urlencoded 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9ec5d77e2d4c73717816afac02670d5c4f534ea95ed430442cad02e7a6e32c97"
"checksum serde_yaml 0.8.11 (registry+https://github.com/rust-lang/crates.io-index)" = "691b17f19fc1ec9d94ec0b5864859290dff279dbd7b03f017afda54eb36c3c35"
@ -1874,7 +1973,7 @@ dependencies = [
"checksum signal-hook-registry 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
"checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
"checksum smallvec 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "f7b0758c52e15a8b5e3691eae6cc559f08eee9406e548a4477ba4e67770a82b6"
"checksum smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ecf3b85f68e8abaa7555aa5abdb1153079387e60b718283d732f03897fcfc86"
"checksum smallvec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44e59e0c9fa00817912ae6e4e6e3c4fe04455e75699d06eedc7d85917ed8e8f4"
"checksum socket2 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)" = "e8b74de517221a2cb01a53349cf54182acdc31a074727d3079068448c0676d85"
"checksum string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d24114bfcceb867ca7f71a0d3fe45d45619ec47a6fbfa98cb14e14250bfa5d6d"
"checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"

View file

@ -13,6 +13,7 @@ actix-web = "1.0"
serde = "1.0"
serde_yaml = "0.8"
handlebars = "2.0"
hotwatch = "0.4.3"
[profile.release]
lto = true

View file

@ -5,24 +5,21 @@ use actix_web::{
App, HttpResponse, HttpServer, Responder,
};
use handlebars::Handlebars;
use hotwatch::{Event, Hotwatch};
use serde::Deserialize;
use std::collections::{BTreeMap, HashMap};
use std::fs::{File, OpenOptions};
use std::io::{Error, Write};
use std::sync::{Arc, RwLock};
use std::time::Duration;
static DEFAULT_CONFIG: &[u8] = include_bytes!("../bunbun.default.toml");
static CONFIG_FILE: &str = "bunbun.toml";
#[get("/ls")]
fn list(data: Data<Arc<State>>) -> impl Responder {
HttpResponse::Ok().body(
data.renderer
.read()
.unwrap()
.render("list", &data.routes)
.unwrap(),
)
fn list(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap();
HttpResponse::Ok().body(data.renderer.render("list", &data.routes).unwrap())
}
#[derive(Deserialize)]
@ -31,7 +28,8 @@ struct SearchQuery {
}
#[get("/hop")]
fn hop(data: Data<Arc<State>>, query: Query<SearchQuery>) -> impl Responder {
fn hop(data: Data<Arc<RwLock<State>>>, query: Query<SearchQuery>) -> impl Responder {
let data = data.read().unwrap();
let mut raw_args = query.to.split_ascii_whitespace();
let command = raw_args.next();
@ -57,8 +55,6 @@ fn hop(data: Data<Arc<State>>, query: Query<SearchQuery>) -> impl Responder {
.header(
header::LOCATION,
data.renderer
.read()
.unwrap()
.render_template(template, &template_args)
.unwrap(),
)
@ -77,8 +73,6 @@ fn hop(data: Data<Arc<State>>, query: Query<SearchQuery>) -> impl Responder {
.header(
header::LOCATION,
data.renderer
.read()
.unwrap()
.render_template(data.routes.get(route).unwrap(), &template_args)
.unwrap(),
)
@ -90,20 +84,16 @@ fn hop(data: Data<Arc<State>>, query: Query<SearchQuery>) -> impl Responder {
}
#[get("/")]
fn index(data: Data<Arc<State>>) -> impl Responder {
fn index(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap();
let mut template_args = HashMap::new();
template_args.insert("hostname", &data.public_address);
HttpResponse::Ok().body(
data.renderer
.read()
.unwrap()
.render("index", &template_args)
.unwrap(),
)
HttpResponse::Ok().body(data.renderer.render("index", &template_args).unwrap())
}
#[get("/bunbunsearch.xml")]
fn opensearch(data: Data<Arc<State>>) -> impl Responder {
fn opensearch(data: Data<Arc<RwLock<State>>>) -> impl Responder {
let data = data.read().unwrap();
let mut template_args = HashMap::new();
template_args.insert("hostname", &data.public_address);
HttpResponse::Ok()
@ -111,13 +101,7 @@ fn opensearch(data: Data<Arc<State>>) -> impl Responder {
header::CONTENT_TYPE,
"application/opensearchdescription+xml",
)
.body(
data.renderer
.read()
.unwrap()
.render("opensearch", &template_args)
.unwrap(),
)
.body(data.renderer.render("opensearch", &template_args).unwrap())
}
#[derive(Deserialize)]
@ -132,18 +116,18 @@ struct State {
public_address: String,
default_route: Option<String>,
routes: BTreeMap<String, String>,
renderer: RwLock<Handlebars>,
renderer: Handlebars,
}
fn main() -> Result<(), Error> {
let config_file = match File::open(CONFIG_FILE) {
Ok(file) => file,
Err(_) => {
eprintln!("Unable to find a bunbun.toml file. Creating default!");
eprintln!("Unable to find a {} file. Creating default!", CONFIG_FILE);
let mut fd = OpenOptions::new()
.write(true)
.create_new(true)
.open("bunbun.toml")
.open(CONFIG_FILE)
.expect("Unable to write to directory!");
fd.write_all(DEFAULT_CONFIG)?;
File::open(CONFIG_FILE)?
@ -152,16 +136,34 @@ fn main() -> Result<(), Error> {
let renderer = compile_templates();
let conf: Config = serde_yaml::from_reader(config_file).unwrap();
let state = Arc::from(State {
let state = Arc::from(RwLock::new(State {
public_address: conf.public_address,
default_route: conf.default_route,
routes: conf.routes,
renderer: RwLock::new(renderer),
});
renderer: renderer,
}));
let state_ref = state.clone();
let mut watch =
Hotwatch::new_with_custom_delay(Duration::from_millis(500)).expect("Failed to init watch");
watch
.watch(CONFIG_FILE, move |e: Event| {
if let Event::Write(_) = e {
let config_file = File::open(CONFIG_FILE).unwrap();
let conf: Config = serde_yaml::from_reader(config_file).unwrap();
let state = state.clone();
let mut state = state.write().unwrap();
state.public_address = conf.public_address;
state.default_route = conf.default_route;
state.routes = conf.routes;
}
})
.expect("failed to watch");
HttpServer::new(move || {
App::new()
.data(state.clone())
.data(state_ref.clone())
.service(hop)
.service(list)
.service(index)