Add states

.gitignore

@@ -1,3 +1,4 @@
+/Cargo.lock
 /config.json
 /db/
 /target/

Cargo.toml

@@ -9,6 +9,7 @@ license-file = "LICENSE"
 [dependencies]
 cached = "0.39.0"
 diesel = { version = "2.0.2", features = [
+  "r2d2",
   "sqlite",
   "returning_clauses_for_sqlite_3_35",
   "without-deprecated",

src/config.rs

@@ -1,10 +1,9 @@
-use cached::proc_macro::once;
 use serde::Deserialize;
 use std::fs::File;
 use std::io::BufReader;
 use std::path::Path;
 
-#[derive(Deserialize, Clone)]
+#[derive(Deserialize)]
 pub struct Hook {
     pub repo_url: String,
     pub current_dir: String,
@@ -12,46 +11,20 @@ pub struct Hook {
     pub args: Vec<String>,
 }
 
-#[derive(Deserialize, Clone)]
-struct Config {
-    secret: String,
-    base_url: String,
-    hooks: Vec<Hook>,
+#[derive(Deserialize)]
+pub struct Config {
+    pub secret: String,
+    pub base_url: String,
+    pub hooks: Vec<Hook>,
 }
 
-#[once]
-fn get_config() -> Config {
+impl Config {
+    pub fn new() -> Self {
         let config_path = Path::new("config.json");
         let config_file = File::open(config_path).unwrap();
         let config_reader = BufReader::new(config_file);
-    let config: Config = serde_json::from_reader(config_reader).unwrap();
+        let config: Self = serde_json::from_reader(config_reader).unwrap();
 
         config
     }
-
-#[once]
-pub fn get_secret() -> Vec<u8> {
-    let config = get_config();
-
-    config.secret.as_bytes().to_owned()
-}
-
-#[once]
-pub fn get_hooks() -> Vec<Hook> {
-    let config = get_config();
-
-    config.hooks
-}
-
-#[once]
-pub fn get_base_url() -> String {
-    let config = get_config();
-
-    config.base_url
-}
-
-pub fn get_hook(clone_url: &str) -> Option<Hook> {
-    let hooks = get_hooks();
-
-    hooks.into_iter().find(|hook| hook.repo_url == clone_url)
 }

src/db.rs

@@ -1,17 +1,26 @@
 use diesel::prelude::*;
+use diesel::r2d2::{ConnectionManager, Pool};
+use std::env;
 use std::process::Output;
 
 use crate::config::Hook;
 use crate::models::{HookLog, NewHookLog};
 use crate::schema::hooklog;
 
-fn establish_connection() -> SqliteConnection {
-    let database_url = "db/db.sqlite";
-    SqliteConnection::establish(database_url).unwrap()
+pub type DBPool = Pool<ConnectionManager<SqliteConnection>>;
+
+pub fn establish_connection_pool() -> DBPool {
+    let database_url =
+        env::var("DATABASE_URL").expect("Environment variable DATABASE_URL missing!");
+    let manager = ConnectionManager::<SqliteConnection>::new(&database_url);
+
+    Pool::builder()
+        .build(manager)
+        .expect("Could not build database connection pool!")
 }
 
-pub fn add_hook_log(hook: &Hook, output: &Output) -> i32 {
-    let connection = &mut establish_connection();
+pub fn add_hook_log(pool: &DBPool, hook: &Hook, output: &Output) -> i32 {
+    let conn = &mut pool.get().unwrap();
 
     let command_with_args = hook.command.to_owned() + " " + &hook.args.join(" ");
 
@@ -26,16 +35,15 @@ pub fn add_hook_log(hook: &Hook, output: &Output) -> i32 {
 
     let result: HookLog = diesel::insert_into(hooklog::table)
         .values(&new_hook_log)
-        .get_result(connection)
+        .get_result(conn)
         .expect("Error saving hook log!");
 
     result.id
 }
 
-pub fn get_hook_log(id: i32) -> HookLog {
+pub fn get_hook_log(pool: &DBPool, id: i32) -> HookLog {
+    let conn = &mut pool.get().unwrap();
     use hooklog::dsl::hooklog;
 
-    let connection = &mut establish_connection();
-
-    hooklog.find(id).first(connection).unwrap()
+    hooklog.find(id).first(conn).unwrap()
 }

src/guards.rs

@@ -5,7 +5,7 @@ use rocket::request::{self, Request};
 use serde_json::Value;
 use sha2::Sha256;
 
-use crate::config;
+use crate::states;
 
 pub struct Repo<'r> {
     pub clone_url: &'r str,
@@ -43,7 +43,9 @@ impl<'r> FromData<'r> for Repo<'r> {
             return Outcome::Failure((Status::BadRequest, Self::Error::MoreThatOneSignature));
         }
 
-        if !is_valid_signature(&received_signature, &payload) {
+        let config_state = req.rocket().state::<states::Config>().unwrap();
+
+        if !is_valid_signature(&config_state.secret, &received_signature, &payload) {
             return Outcome::Failure((Status::BadRequest, Self::Error::InvalidSignature));
         }
 
@@ -57,8 +59,8 @@ impl<'r> FromData<'r> for Repo<'r> {
     }
 }
 
-fn is_valid_signature(received_signature: &[u8], payload: &[u8]) -> bool {
-    let mut mac = Hmac::<Sha256>::new_from_slice(&config::get_secret()).unwrap();
+fn is_valid_signature(secret: &[u8], received_signature: &[u8], payload: &[u8]) -> bool {
+    let mut mac = Hmac::<Sha256>::new_from_slice(secret).unwrap();
     mac.update(payload);
     let expected_signature = mac.finalize().into_bytes();
 

src/main.rs

@@ -4,10 +4,13 @@ mod guards;
 mod models;
 mod routes;
 mod schema;
+mod states;
 
 #[rocket::launch]
 fn rocket() -> _ {
     rocket::build()
         .mount("/", rocket::routes![routes::index])
         .mount("/api", rocket::routes![routes::trigger])
+        .manage(states::DB::new())
+        .manage(states::Config::new())
 }

src/routes.rs

@@ -1,13 +1,13 @@
-use rocket::{get, post};
+use rocket::{get, post, State};
 use std::process::Command;
 
-use crate::config;
 use crate::db;
 use crate::guards;
+use crate::states;
 
 #[get("/<id>")]
-pub fn index(id: i32) -> String {
-    let hook_log = db::get_hook_log(id);
+pub fn index(db_state: &State<states::DB>, id: i32) -> String {
+    let hook_log = db::get_hook_log(&db_state.pool, id);
     format!(
         "Hook log id:
 {}
@@ -44,8 +44,12 @@ Status code:
 }
 
 #[post("/trigger", format = "json", data = "<repo>")]
-pub fn trigger(repo: guards::Repo) -> String {
-    let hook = config::get_hook(repo.clone_url).unwrap();
+pub fn trigger(
+    db_state: &State<states::DB>,
+    config_state: &State<states::Config>,
+    repo: guards::Repo,
+) -> String {
+    let hook = config_state.get_hook(repo.clone_url).unwrap();
 
     let output = Command::new(&hook.command)
         .args(&hook.args)
@@ -53,9 +57,7 @@ pub fn trigger(repo: guards::Repo) -> String {
         .output()
         .unwrap();
 
-    let new_hook_log_id = db::add_hook_log(&hook, &output);
+    let new_hook_log_id = db::add_hook_log(&db_state.pool, &hook, &output);
 
-    let base_url = config::get_base_url();
-
-    format!("https://{base_url}/{new_hook_log_id}")
+    format!("{}/{new_hook_log_id}", config_state.base_url_with_https)
 }

src/states.rs

@@ -0,0 +1,36 @@
+use crate::config;
+use crate::db;
+
+pub struct DB {
+    pub pool: db::DBPool,
+}
+
+impl DB {
+    pub fn new() -> Self {
+        let pool = db::establish_connection_pool();
+
+        Self { pool }
+    }
+}
+
+pub struct Config {
+    pub secret: Vec<u8>,
+    pub base_url_with_https: String,
+    pub hooks: Vec<config::Hook>,
+}
+
+impl Config {
+    pub fn new() -> Self {
+        let config = config::Config::new();
+
+        Self {
+            secret: config.secret.as_bytes().to_owned(),
+            base_url_with_https: format!("https://{}", config.base_url),
+            hooks: config.hooks,
+        }
+    }
+
+    pub fn get_hook(&self, clone_url: &str) -> Option<&config::Hook> {
+        self.hooks.iter().find(|&hook| hook.repo_url == clone_url)
+    }
+}