Improve active handling for controllers

.gitattributes

@@ -1,3 +1,4 @@
 * text=auto
 
 Cargo.lock -diff
+.sqlx/query-*.json -diff

Makefile

@@ -3,10 +3,16 @@ build:
 	cargo build
 
 sqlx:
-	rm ./emgauwa-dev.sqlite
+	rm ./emgauwa-dev.sqlite || true
 	cargo sqlx database create
 	cargo sqlx migrate run
 	cargo sqlx prepare --workspace
 
 build-rpi:
 	cross build --target arm-unknown-linux-gnueabihf
+
+clean-db:
+	rm ./emgauwa-dev.sqlite || true
+	rm ./emgauwa-core.sqlite || true
+	rm ./emgauwa-controller.sqlite || true
+	$(MAKE) sqlx

emgauwa-controller/src/main.rs

@@ -28,7 +28,6 @@ async fn create_this_controller(
 		&ControllerUid::default(),
 		&settings.name,
 		i64::try_from(settings.relays.len()).expect("Too many relays"),
-		true,
 	)
 	.await
 	.expect("Failed to create controller")
@@ -86,7 +85,7 @@ async fn main() {
 		.collect();
 
 	let db_controller = db_controller
-		.update(&mut conn, &db_controller.name, db_relays.len() as i64, true)
+		.update(&mut conn, &db_controller.name, db_relays.len() as i64)
 		.await
 		.unwrap();
 

emgauwa-core/src/main.rs

@@ -5,6 +5,7 @@ use std::str::FromStr;
 use crate::utils::drop_privileges;
 use actix_web::middleware::TrailingSlash;
 use actix_web::{middleware, web, App, HttpServer};
+use emgauwa_lib::db::DbController;
 use emgauwa_lib::handlers;
 use log::{trace, LevelFilter};
 use simple_logger::SimpleLogger;
@@ -32,6 +33,14 @@ async fn main() -> std::io::Result<()> {
 
 	let pool = emgauwa_lib::db::init(&settings.database).await;
 
+	// This block is to ensure that the connection is dropped after use.
+	{
+		let mut conn = pool.acquire().await.unwrap();
+		DbController::all_inactive(&mut conn)
+			.await
+			.expect("Error setting all controllers inactive");
+	}
+
 	log::info!("Starting server on {}:{}", settings.host, settings.port);
 	HttpServer::new(move || {
 		let cors = Cors::default().allow_any_method().allow_any_header();

emgauwa-lib/src/db/controllers.rs

@@ -58,11 +58,10 @@ impl DbController {
 		uid: &ControllerUid,
 		new_name: &str,
 		new_relay_count: i64,
-		new_active: bool,
 	) -> Result<DbController, DatabaseError> {
 		match DbController::get_by_uid(conn, uid).await? {
 			Some(tag) => Ok(tag),
-			None => DbController::create(conn, uid, new_name, new_relay_count, new_active).await,
+			None => DbController::create(conn, uid, new_name, new_relay_count).await,
 		}
 	}
 
@@ -94,15 +93,13 @@ impl DbController {
 		new_uid: &ControllerUid,
 		new_name: &str,
 		new_relay_count: i64,
-		new_active: bool,
 	) -> Result<DbController, DatabaseError> {
 		sqlx::query_as!(
 			DbController,
-			"INSERT INTO controllers (uid, name, relay_count, active) VALUES (?, ?, ?, ?) RETURNING *",
+			"INSERT INTO controllers (uid, name, relay_count) VALUES (?, ?, ?) RETURNING *",
 			new_uid,
 			new_name,
 			new_relay_count,
-			new_active,
 		)
 		.fetch_optional(conn.deref_mut())
 		.await?
@@ -114,12 +111,28 @@ impl DbController {
 		conn: &mut PoolConnection<Sqlite>,
 		new_name: &str,
 		new_relay_count: i64,
+	) -> Result<DbController, DatabaseError> {
+		sqlx::query!(
+			"UPDATE controllers SET name = ?, relay_count = ? WHERE id = ?",
+			new_name,
+			new_relay_count,
+			self.id,
+		)
+		.execute(conn.deref_mut())
+		.await?;
+
+		Self::get(conn, self.id)
+			.await?
+			.ok_or(DatabaseError::UpdateGetError)
+	}
+
+	pub async fn update_active(
+		&self,
+		conn: &mut PoolConnection<Sqlite>,
 		new_active: bool,
 	) -> Result<DbController, DatabaseError> {
 		sqlx::query!(
-			"UPDATE controllers SET name = ?, relay_count = ?, active = ? WHERE id = ?",
-			new_name,
-			new_relay_count,
+			"UPDATE controllers SET active = ? WHERE id = ?",
 			new_active,
 			self.id,
 		)
@@ -130,4 +143,11 @@ impl DbController {
 			.await?
 			.ok_or(DatabaseError::UpdateGetError)
 	}
+
+	pub async fn all_inactive(conn: &mut PoolConnection<Sqlite>) -> Result<(), DatabaseError> {
+		sqlx::query!("UPDATE controllers SET active = 0")
+			.execute(conn.deref_mut())
+			.await?;
+		Ok(())
+	}
 }

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

@@ -18,10 +18,18 @@ pub enum ControllerWsAction {
 
 struct ControllerWs {
 	pub pool: Pool<Sqlite>,
+	pub controller: Option<DbController>,
 }
 
 impl Actor for ControllerWs {
 	type Context = ws::WebsocketContext<Self>;
+
+	fn stopped(&mut self, _ctx: &mut Self::Context) {
+		if let Some(controller) = &self.controller {
+			let mut pool_conn = futures::executor::block_on(self.pool.acquire()).unwrap();
+			futures::executor::block_on(controller.update_active(&mut pool_conn, false)).unwrap();
+		}
+	}
 }
 
 impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
@@ -32,7 +40,8 @@ impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
 			Ok(Message::Ping(msg)) => ctx.pong(&msg),
 			Ok(Message::Text(text)) => {
 				let action: ControllerWsAction = serde_json::from_str(&text).unwrap();
-				let action_res = futures::executor::block_on(handle_action(&mut pool_conn, action));
+				let action_res =
+					futures::executor::block_on(self.handle_action(&mut pool_conn, action));
 				if let Err(e) = action_res {
 					log::error!("Error handling action: {:?}", e);
 					ctx.text(serde_json::to_string(&e).unwrap());
@@ -47,17 +56,20 @@ impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
 	}
 }
 
-pub async fn handle_action(
+impl ControllerWs {
+	pub async fn handle_action(
+		&mut self,
 		conn: &mut PoolConnection<Sqlite>,
 		action: ControllerWsAction,
-) -> Result<(), DatabaseError> {
+	) -> Result<(), DatabaseError> {
 		match action {
 			ControllerWsAction::Register(controller) => {
 				log::info!("Registering controller: {:?}", controller);
 				let c = &controller.controller;
 				let controller_db =
-				DbController::get_by_uid_or_create(conn, &c.uid, &c.name, c.relay_count, c.active)
+					DbController::get_by_uid_or_create(conn, &c.uid, &c.name, c.relay_count)
 						.await?;
+				controller_db.update_active(conn, true).await?;
 
 				println!("Controller: {:?}", controller_db);
 
@@ -73,9 +85,12 @@ pub async fn handle_action(
 					println!("Controller relay: {:?}", relay_db);
 				}
 
+				self.controller = Some(controller_db);
+
 				Ok(())
 			}
 		}
+	}
 }
 
 #[get("/api/v1/ws/controllers")]
@@ -87,6 +102,7 @@ pub async fn index(
 	let resp = ws::start(
 		ControllerWs {
 			pool: pool.get_ref().clone(),
+			controller: None,
 		},
 		&req,
 		stream,

migrations/20231120000000_init.up.sql

@@ -18,6 +18,7 @@ CREATE TABLE controllers
     active
         BOOLEAN
         NOT NULL
+        DEFAULT false
 );
 
 CREATE TABLE relays