Refactor more stuff

Makefile

@@ -19,5 +19,8 @@ clean-db:
 	rm ./emgauwa-controller.sqlite || true
 	$(MAKE) sqlx-prepare
 
-fmt:
+format:
 	cargo +nightly fmt
+
+lint:
+	cargo clippy --all-targets --all-features -- -D warnings

emgauwa-controller/src/main.rs

@@ -42,7 +42,7 @@ async fn create_this_relay(
 	let relay = DbRelay::create(
 		conn,
 		&settings_relay.name,
-		settings_relay.number.unwrap(),
+		settings_relay.number.expect("Relay number is missing"),
 		this_controller,
 	)
 	.await?;
@@ -55,6 +55,34 @@ async fn create_this_relay(
 	Ok(relay)
 }
 
+async fn run_websocket(this: Controller, url: &str) {
+	match connect_async(url).await {
+		Ok(connection) => {
+			let (ws_stream, _) = connection;
+
+			let (mut write, read) = ws_stream.split();
+
+			let ws_action = ControllerWsAction::Register(this.clone());
+
+			let ws_action_json =
+				serde_json::to_string(&ws_action).expect("Failed to serialize action");
+			if let Err(err) = write.send(Message::text(ws_action_json)).await {
+				log::error!("Failed to register at websocket: {}", err);
+				return;
+			}
+
+			let read_handler = read.for_each(handle_message);
+
+			read_handler.await;
+
+			log::warn!("Lost connection to websocket");
+		}
+		Err(err) => {
+			log::warn!("Failed to connect to websocket: {}", err,);
+		}
+	}
+}
+
 #[tokio::main]
 async fn main() {
 	let settings = settings::init();
@@ -67,19 +95,24 @@ async fn main() {
 		.await
 		.expect("Failed to get database connection");
 
-	let db_controller = DbController::get_all(&mut conn)
+	let db_controller = match DbController::get_all(&mut conn)
 		.await
 		.expect("Failed to get controller from database")
 		.pop()
-		.unwrap_or_else(|| {
-			futures::executor::block_on(create_this_controller(&mut conn, &settings))
-		});
+	{
+		None => futures::executor::block_on(create_this_controller(&mut conn, &settings)),
+		Some(c) => c,
+	};
 
 	for relay in &settings.relays {
-		if DbRelay::get_by_controller_and_num(&mut conn, &db_controller, relay.number.unwrap())
-			.await
-			.expect("Failed to get relay from database")
-			.is_none()
+		if DbRelay::get_by_controller_and_num(
+			&mut conn,
+			&db_controller,
+			relay.number.expect("Relay number is missing"),
+		)
+		.await
+		.expect("Failed to get relay from database")
+		.is_none()
 		{
 			create_this_relay(&mut conn, &db_controller, relay)
 				.await
@@ -90,7 +123,7 @@ async fn main() {
 	let db_controller = db_controller
 		.update(&mut conn, &db_controller.name, settings.relays.len() as i64)
 		.await
-		.unwrap();
+		.expect("Failed to update controller");
 
 	let this = Controller::from_db_model(&mut conn, db_controller)
 		.expect("Failed to convert database models");
@@ -103,27 +136,7 @@ async fn main() {
 	tokio::spawn(run_relay_loop(settings));
 
 	loop {
-		match connect_async(&url).await {
-			Ok(connection) => {
-				let (ws_stream, _) = connection;
-
-				let (mut write, read) = ws_stream.split();
-
-				let ws_action = ControllerWsAction::Register(this.clone());
-
-				let ws_action_json = serde_json::to_string(&ws_action).unwrap();
-				write.send(Message::text(ws_action_json)).await.unwrap();
-
-				let read_handler = read.for_each(handle_message);
-
-				read_handler.await;
-
-				log::warn!("Lost connection to websocket");
-			}
-			Err(err) => {
-				log::warn!("Failed to connect to websocket: {}", err,);
-			}
-		}
+		run_websocket(this.clone(), &url).await;
 
 		log::info!(
 			"Retrying to connect in {} seconds...",

emgauwa-core/src/app_state.rs

@@ -1,36 +1,42 @@
 use std::collections::HashMap;
-use std::sync::{Arc, Mutex};
 
 use actix::{Actor, Context, Handler, Message, Recipient};
-use emgauwa_lib::errors::DatabaseError;
+use emgauwa_lib::errors::EmgauwaError;
 use emgauwa_lib::models::Controller;
 use emgauwa_lib::types::{ControllerUid, ControllerWsAction};
 use futures::executor::block_on;
 use sqlx::{Pool, Sqlite};
 
 #[derive(Message)]
-#[rtype(result = "Result<(), DatabaseError>")]
+#[rtype(result = "Result<(), EmgauwaError>")]
 pub struct DisconnectController {
 	pub controller_uid: ControllerUid,
 }
 
 #[derive(Message)]
-#[rtype(result = "Result<(), DatabaseError>")]
+#[rtype(result = "Result<(), EmgauwaError>")]
 pub struct ConnectController {
 	pub address: Recipient<ControllerWsAction>,
 	pub controller: Controller,
 }
 
+#[derive(Message)]
+#[rtype(result = "Result<(), EmgauwaError>")]
+pub struct Action {
+	pub controller_uid: ControllerUid,
+	pub action: ControllerWsAction,
+}
+
 pub struct AppServer {
 	pub pool: Pool<Sqlite>,
-	pub connected_controllers: Arc<Mutex<HashMap<ControllerUid, Controller>>>,
+	pub connected_controllers: HashMap<ControllerUid, (Controller, Recipient<ControllerWsAction>)>,
 }
 
 impl AppServer {
 	pub fn new(pool: Pool<Sqlite>) -> AppServer {
 		AppServer {
 			pool,
-			connected_controllers: Arc::new(Mutex::new(HashMap::new())),
+			connected_controllers: HashMap::new(),
 		}
 	}
 }
@@ -40,13 +46,12 @@ impl Actor for AppServer {
 }
 
 impl Handler<DisconnectController> for AppServer {
-	type Result = Result<(), DatabaseError>;
+	type Result = Result<(), EmgauwaError>;
 
 	fn handle(&mut self, msg: DisconnectController, _ctx: &mut Self::Context) -> Self::Result {
-		let mut pool_conn = block_on(self.pool.acquire()).unwrap();
-		let mut data = self.connected_controllers.lock().unwrap();
+		let mut pool_conn = block_on(self.pool.acquire())?;
 
-		if let Some(controller) = data.remove(&msg.controller_uid) {
+		if let Some((controller, _)) = self.connected_controllers.remove(&msg.controller_uid) {
 			if let Err(err) = block_on(controller.c.update_active(&mut pool_conn, false)) {
 				log::error!(
 					"Failed to mark controller {} as inactive: {:?}",
@@ -60,12 +65,24 @@ impl Handler<DisconnectController> for AppServer {
 }
 
 impl Handler<ConnectController> for AppServer {
-	type Result = Result<(), DatabaseError>;
+	type Result = Result<(), EmgauwaError>;
 
 	fn handle(&mut self, msg: ConnectController, _ctx: &mut Self::Context) -> Self::Result {
-		let mut data = self.connected_controllers.lock().unwrap();
-		data.insert(msg.controller.c.uid.clone(), msg.controller);
+		self.connected_controllers
+			.insert(msg.controller.c.uid.clone(), (msg.controller, msg.address));
 
 		Ok(())
 	}
 }
+
+impl Handler<Action> for AppServer {
+	type Result = Result<(), EmgauwaError>;
+
+	fn handle(&mut self, msg: Action, _ctx: &mut Self::Context) -> Self::Result {
+		if let Some((_, address)) = self.connected_controllers.get(&msg.controller_uid) {
+			block_on(address.send(msg.action))?
+		} else {
+			Err(EmgauwaError::Connection(msg.controller_uid))
+		}
+	}
+}

emgauwa-core/src/handlers/v1/relays.rs

@@ -1,11 +1,15 @@
+use actix::Addr;
 use actix_web::{get, put, web, HttpResponse};
 use emgauwa_lib::db::{DbController, DbRelay, DbTag};
 use emgauwa_lib::errors::{DatabaseError, EmgauwaError};
 use emgauwa_lib::models::{convert_db_list, FromDbModel, Relay};
-use emgauwa_lib::types::ControllerUid;
+use emgauwa_lib::types::{ControllerUid, ControllerWsAction};
 use serde::{Deserialize, Serialize};
 use sqlx::{Pool, Sqlite};
 
+use crate::app_state;
+use crate::app_state::AppServer;
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct RequestRelay {
 	name: String,
@@ -64,6 +68,7 @@ pub async fn index_for_controller(
 #[get("/api/v1/controllers/{controller_id}/relays/{relay_num}")]
 pub async fn show_for_controller(
 	pool: web::Data<Pool<Sqlite>>,
+	app_server: web::Data<Addr<AppServer>>,
 	path: web::Path<(String, i64)>,
 ) -> Result<HttpResponse, EmgauwaError> {
 	let mut pool_conn = pool.acquire().await?;

emgauwa-core/src/handlers/v1/ws/controllers/handlers.rs

@@ -1,6 +1,6 @@
 use actix::{Actor, AsyncContext};
 use emgauwa_lib::db::{DbController, DbJunctionRelaySchedule, DbRelay, DbSchedule};
-use emgauwa_lib::errors::DatabaseError;
+use emgauwa_lib::errors::{DatabaseError, EmgauwaError};
 use emgauwa_lib::models::{Controller, FromDbModel};
 use futures::executor::block_on;
 use sqlx::pool::PoolConnection;
@@ -15,7 +15,7 @@ impl ControllerWs {
 		conn: &mut PoolConnection<Sqlite>,
 		ctx: &mut <ControllerWs as Actor>::Context,
 		controller: Controller,
-	) -> Result<(), DatabaseError> {
+	) -> Result<(), EmgauwaError> {
 		log::info!("Registering controller: {:?}", controller);
 		let c = &controller.c;
 		let controller_db = block_on(DbController::get_by_uid_or_create(
@@ -60,10 +60,10 @@ impl ControllerWs {
 
 		let addr = ctx.address();
 		self.controller_uid = Some(controller_uid.clone());
-		self.app_server.do_send(ConnectController {
+		block_on(self.app_server.send(ConnectController {
 			address: addr.recipient(),
 			controller,
-		});
+		}))??;
 
 		Ok(())
 	}

emgauwa-core/src/handlers/v1/ws/controllers/mod.rs

@@ -6,7 +6,7 @@ use actix::{Actor, ActorContext, Addr, AsyncContext, Handler, StreamHandler};
 use actix_web_actors::ws;
 use actix_web_actors::ws::ProtocolError;
 use emgauwa_lib::constants::{HEARTBEAT_INTERVAL, HEARTBEAT_TIMEOUT};
-use emgauwa_lib::errors::{DatabaseError, EmgauwaError};
+use emgauwa_lib::errors::EmgauwaError;
 use emgauwa_lib::types::{ControllerUid, ControllerWsAction};
 use futures::executor::block_on;
 use sqlx::pool::PoolConnection;
@@ -14,6 +14,7 @@ use sqlx::{Pool, Sqlite};
 use ws::Message;
 
 use crate::app_state::{AppServer, DisconnectController};
+use crate::utils::flatten_result;
 
 pub struct ControllerWs {
 	pub pool: Pool<Sqlite>,
@@ -31,9 +32,15 @@ impl Actor for ControllerWs {
 
 	fn stopped(&mut self, _ctx: &mut Self::Context) {
 		if let Some(controller_uid) = &self.controller_uid {
-			self.app_server.do_send(DisconnectController {
-				controller_uid: controller_uid.clone(),
-			})
+			let flat_res = flatten_result(
+				block_on(self.app_server.send(DisconnectController {
+					controller_uid: controller_uid.clone(),
+				}))
+				.map_err(EmgauwaError::from),
+			);
+			if let Err(err) = flat_res {
+				log::error!("Error disconnecting controller: {:?}", err);
+			}
 		}
 	}
 }
@@ -44,9 +51,10 @@ impl ControllerWs {
 		conn: &mut PoolConnection<Sqlite>,
 		ctx: &mut <ControllerWs as Actor>::Context,
 		action: ControllerWsAction,
-	) -> Result<(), DatabaseError> {
+	) -> Result<(), EmgauwaError> {
 		match action {
 			ControllerWsAction::Register(controller) => self.handle_register(conn, ctx, controller),
+			_ => Ok(()),
 		}
 	}
 
@@ -78,7 +86,14 @@ impl Handler<ControllerWsAction> for ControllerWs {
 
 impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
 	fn handle(&mut self, msg: Result<Message, ProtocolError>, ctx: &mut Self::Context) {
-		let mut pool_conn = block_on(self.pool.acquire()).unwrap();
+		let mut pool_conn = match block_on(self.pool.acquire()) {
+			Ok(conn) => conn,
+			Err(err) => {
+				log::error!("Failed to acquire database connection: {:?}", err);
+				ctx.stop();
+				return;
+			}
+		};
 
 		let msg = match msg {
 			Err(_) => {
@@ -96,14 +111,22 @@ impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
 			Message::Pong(_) => {
 				self.hb = Instant::now();
 			}
-			Message::Text(text) => {
-				let action: ControllerWsAction = serde_json::from_str(&text).unwrap();
-				let action_res = self.handle_action(&mut pool_conn, ctx, action);
-				if let Err(e) = action_res {
-					log::error!("Error handling action: {:?}", e);
-					ctx.text(serde_json::to_string(&e).unwrap());
+			Message::Text(text) => match serde_json::from_str(&text) {
+				Ok(action) => {
+					let action_res = self.handle_action(&mut pool_conn, ctx, action);
+					if let Err(e) = action_res {
+						log::error!("Error handling action: {:?}", e);
+						ctx.text(serde_json::to_string(&e).expect("Failed to serialize error"));
+					}
 				}
-			}
+				Err(e) => {
+					log::error!("Error deserializing action: {:?}", e);
+					ctx.text(
+						serde_json::to_string(&EmgauwaError::Serialization(e))
+							.expect("Failed to serialize error"),
+					);
+				}
+			},
 			Message::Binary(_) => log::warn!("Received unexpected binary in controller ws"),
 			Message::Close(reason) => {
 				ctx.close(reason);

emgauwa-core/src/handlers/v1/ws/mod.rs

@@ -3,7 +3,7 @@ use std::time::Instant;
 use actix::Addr;
 use actix_web::{get, web, HttpRequest, HttpResponse};
 use actix_web_actors::ws;
-use emgauwa_lib::errors::{ApiError, EmgauwaError};
+use emgauwa_lib::errors::EmgauwaError;
 use sqlx::{Pool, Sqlite};
 
 use crate::app_state::AppServer;
@@ -28,10 +28,6 @@ pub async fn ws_controllers(
 		&req,
 		stream,
 	)
-	.map_err(|_| {
-		EmgauwaError::from(ApiError::InternalError(String::from(
-			"error starting websocket",
-		)))
-	});
+	.map_err(|_| EmgauwaError::Internal(String::from("error starting websocket")));
 	resp
 }

emgauwa-core/src/utils.rs

@@ -3,6 +3,14 @@ use std::io::{Error, ErrorKind};
 
 use crate::settings::Settings;
 
+pub fn flatten_result<T, E>(res: Result<Result<T, E>, E>) -> Result<T, E> {
+	match res {
+		Ok(Ok(t)) => Ok(t),
+		Ok(Err(e)) => Err(e),
+		Err(e) => Err(e),
+	}
+}
+
 // https://blog.lxsang.me/post/id/28.0
 pub fn drop_privileges(settings: &Settings) -> Result<(), Error> {
 	log::info!(

emgauwa-lib/src/db/mod.rs

@@ -40,7 +40,10 @@ pub async fn init(db: &str) -> Pool<Sqlite> {
 
 	run_migrations(&pool).await;
 
-	let mut pool_conn = pool.acquire().await.unwrap();
+	let mut pool_conn = pool
+		.acquire()
+		.await
+		.expect("Failed to acquire pool connection");
 
 	DbSchedule::get_on(&mut pool_conn)
 		.await

emgauwa-lib/src/db/model_utils.rs

@@ -46,8 +46,8 @@ impl Period {
 
 	pub fn new_on() -> Self {
 		Period {
-			start: NaiveTime::from_hms_opt(0, 0, 0).unwrap(),
-			end: NaiveTime::from_hms_opt(0, 0, 0).unwrap(),
+			start: NaiveTime::MIN,
+			end: NaiveTime::MIN,
 		}
 	}
 }
@@ -103,8 +103,10 @@ impl From<Vec<u8>> for DbPeriods {
 			let end_val_h: u32 = value[i - 1] as u32;
 			let end_val_m: u32 = value[i] as u32;
 			vec.push(Period {
-				start: NaiveTime::from_hms_opt(start_val_h, start_val_m, 0).unwrap(),
-				end: NaiveTime::from_hms_opt(end_val_h, end_val_m, 0).unwrap(),
+				start: NaiveTime::from_hms_opt(start_val_h, start_val_m, 0)
+					.expect("Failed to parse period start time from database"),
+				end: NaiveTime::from_hms_opt(end_val_h, end_val_m, 0)
+					.expect("Failed to parse period end time from database"),
 			});
 		}
 		DbPeriods(vec)

emgauwa-lib/src/errors/api_error.rs

@@ -3,14 +3,12 @@ use actix_web::http::StatusCode;
 #[derive(Debug)]
 pub enum ApiError {
 	ProtectedSchedule,
-	InternalError(String),
 }
 
 impl ApiError {
 	pub fn get_code(&self) -> StatusCode {
 		match self {
 			ApiError::ProtectedSchedule => StatusCode::FORBIDDEN,
-			ApiError::InternalError(_) => StatusCode::INTERNAL_SERVER_ERROR,
 		}
 	}
 }
@@ -19,7 +17,6 @@ impl From<&ApiError> for String {
 	fn from(err: &ApiError) -> Self {
 		match err {
 			ApiError::ProtectedSchedule => String::from("the targeted schedule is protected"),
-			ApiError::InternalError(msg) => msg.clone(),
 		}
 	}
 }

emgauwa-lib/src/errors/emgauwa_error.rs

@@ -1,17 +1,22 @@
 use std::fmt::{Debug, Display, Formatter};
 
+use actix::MailboxError;
 use actix_web::http::StatusCode;
 use actix_web::HttpResponse;
 use serde::ser::SerializeStruct;
 use serde::{Serialize, Serializer};
 
 use crate::errors::{ApiError, DatabaseError};
+use crate::types::ControllerUid;
 
+#[derive(Debug)]
 pub enum EmgauwaError {
 	Api(ApiError),
 	Uid(uuid::Error),
 	Serialization(serde_json::Error),
 	Database(DatabaseError),
+	Internal(String),
+	Connection(ControllerUid),
 }
 
 impl EmgauwaError {
@@ -21,6 +26,8 @@ impl EmgauwaError {
 			EmgauwaError::Serialization(_) => StatusCode::INTERNAL_SERVER_ERROR,
 			EmgauwaError::Database(err) => err.get_code(),
 			EmgauwaError::Uid(_) => StatusCode::BAD_REQUEST,
+			EmgauwaError::Internal(_) => StatusCode::INTERNAL_SERVER_ERROR,
+			EmgauwaError::Connection(_) => StatusCode::GATEWAY_TIMEOUT,
 		}
 	}
 }
@@ -32,6 +39,8 @@ impl From<&EmgauwaError> for String {
 			EmgauwaError::Serialization(_) => String::from("error during (de-)serialization"),
 			EmgauwaError::Database(err) => String::from(err),
 			EmgauwaError::Uid(_) => String::from("the uid is in a bad format"),
+			EmgauwaError::Internal(_) => String::from("general error"),
+			EmgauwaError::Connection(_) => String::from("the target controller is not connected"),
 		}
 	}
 }
@@ -66,6 +75,12 @@ impl From<uuid::Error> for EmgauwaError {
 	}
 }
 
+impl From<MailboxError> for EmgauwaError {
+	fn from(value: MailboxError) -> Self {
+		EmgauwaError::Internal(value.to_string())
+	}
+}
+
 impl From<&EmgauwaError> for HttpResponse {
 	fn from(err: &EmgauwaError) -> Self {
 		HttpResponse::build(err.get_code()).json(err)
@@ -90,12 +105,6 @@ impl Display for EmgauwaError {
 	}
 }
 
-impl Debug for EmgauwaError {
-	fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-		write!(f, "{}", String::from(self))
-	}
-}
-
 impl actix_web::error::ResponseError for EmgauwaError {
 	fn status_code(&self) -> StatusCode {
 		self.get_code()

emgauwa-lib/src/types/controller_uid.rs

@@ -85,7 +85,7 @@ impl TryFrom<&str> for ControllerUid {
 
 impl From<&[u8]> for ControllerUid {
 	fn from(value: &[u8]) -> Self {
-		Self(Uuid::from_slice(value).unwrap())
+		Self(Uuid::from_slice(value).expect("Failed to parse controller uid from database"))
 	}
 }
 

emgauwa-lib/src/types/mod.rs

@@ -6,8 +6,9 @@ pub use controller_uid::ControllerUid;
 pub use schedule_uid::ScheduleUid;
 use serde_derive::{Deserialize, Serialize};
 
+use crate::db::DbSchedule;
 use crate::errors::EmgauwaError;
-use crate::models::Controller;
+use crate::models::{Controller, Relay};
 
 pub type Weekday = i64;
 
@@ -15,4 +16,6 @@ pub type Weekday = i64;
 #[rtype(result = "Result<(), EmgauwaError>")]
 pub enum ControllerWsAction {
 	Register(Controller),
+	Schedules(Vec<DbSchedule>),
+	Relays(Vec<Relay>),
 }

emgauwa-lib/src/types/schedule_uid.rs

@@ -145,7 +145,9 @@ impl From<&[u8]> for ScheduleUid {
 		match value {
 			[Self::OFF_U8] => Self::Off,
 			[Self::ON_U8] => Self::On,
-			value_bytes => Self::Any(Uuid::from_slice(value_bytes).unwrap()),
+			value_bytes => Self::Any(
+				Uuid::from_slice(value_bytes).expect("Failed to parse schedule uid from database"),
+			),
 		}
 	}
 }