Add fmt options and move handlers

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

@@ -0,0 +1,141 @@
+use std::time::Instant;
+
+use actix::{Actor, ActorContext, AsyncContext, StreamHandler};
+use actix_web_actors::ws;
+use actix_web_actors::ws::ProtocolError;
+use emgauwa_lib::constants::{HEARTBEAT_INTERVAL, HEARTBEAT_TIMEOUT};
+use emgauwa_lib::db::errors::DatabaseError;
+use emgauwa_lib::db::{DbController, DbRelay};
+use emgauwa_lib::models::{Controller, FromDbModel};
+use emgauwa_lib::types::{ConnectedControllersType, ControllerUid, ControllerWsAction};
+use sqlx::pool::PoolConnection;
+use sqlx::{Pool, Sqlite};
+use ws::Message;
+
+pub struct ControllerWs {
+	pub pool: Pool<Sqlite>,
+	pub controller_uid: Option<ControllerUid>,
+	pub connected_controllers: ConnectedControllersType,
+	pub hb: Instant,
+}
+
+impl Actor for ControllerWs {
+	type Context = ws::WebsocketContext<Self>;
+
+	fn started(&mut self, ctx: &mut Self::Context) {
+		self.hb(ctx);
+	}
+
+	fn stopped(&mut self, _ctx: &mut Self::Context) {
+		if let Some(controller_uid) = &self.controller_uid {
+			let mut pool_conn = futures::executor::block_on(self.pool.acquire()).unwrap();
+
+			let mut data = self.connected_controllers.lock().unwrap();
+			if let Some(controller) = data.remove(controller_uid) {
+				futures::executor::block_on(controller.c.update_active(&mut pool_conn, false))
+					.unwrap();
+			}
+		}
+	}
+}
+
+impl ControllerWs {
+	pub fn handle_action(
+		&mut self,
+		conn: &mut PoolConnection<Sqlite>,
+		action: ControllerWsAction,
+	) -> Result<(), DatabaseError> {
+		match action {
+			ControllerWsAction::Register(controller) => {
+				log::info!("Registering controller: {:?}", controller);
+				let c = &controller.c;
+				let controller_db = futures::executor::block_on(
+					DbController::get_by_uid_or_create(conn, &c.uid, &c.name, c.relay_count),
+				)?;
+				futures::executor::block_on(controller_db.update_active(conn, true))?;
+
+				for relay in &controller.relays {
+					let r = &relay.r;
+					futures::executor::block_on(DbRelay::get_by_controller_and_num_or_create(
+						conn,
+						&controller_db,
+						r.number,
+						&r.name,
+					))?;
+				}
+
+				let controller = Controller::from_db_model(conn, controller_db)?;
+
+				let controller_uid = &controller.c.uid;
+				self.controller_uid = Some(controller_uid.clone());
+
+				let mut data = self.connected_controllers.lock().unwrap();
+				data.insert(controller_uid.clone(), controller);
+
+				Ok(())
+			}
+		}
+	}
+
+	/// helper method that sends ping to client every 5 seconds (HEARTBEAT_INTERVAL).
+	///
+	/// also this method checks heartbeats from client
+	fn hb(&self, ctx: &mut ws::WebsocketContext<Self>) {
+		ctx.run_interval(HEARTBEAT_INTERVAL, |act, ctx| {
+			// check client heartbeats
+			if Instant::now().duration_since(act.hb) > HEARTBEAT_TIMEOUT {
+				log::warn!("Websocket Controller heartbeat failed, disconnecting!");
+				ctx.stop();
+				// don't try to send a ping
+				return;
+			}
+
+			ctx.ping(&[]);
+		});
+	}
+}
+
+impl StreamHandler<Result<Message, ProtocolError>> for ControllerWs {
+	fn handle(&mut self, msg: Result<Message, ProtocolError>, ctx: &mut Self::Context) {
+		let mut pool_conn = futures::executor::block_on(self.pool.acquire()).unwrap();
+
+		let msg = match msg {
+			Err(_) => {
+				ctx.stop();
+				return;
+			}
+			Ok(msg) => msg,
+		};
+
+		match msg {
+			Message::Ping(msg) => {
+				self.hb = Instant::now();
+				ctx.pong(&msg)
+			}
+			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, action);
+				if let Err(e) = action_res {
+					log::error!("Error handling action: {:?}", e);
+					ctx.text(serde_json::to_string(&e).unwrap());
+				}
+			}
+			Message::Binary(_) => log::warn!("Received unexpected binary in controller ws"),
+			Message::Close(reason) => {
+				ctx.close(reason);
+				ctx.stop();
+			}
+			Message::Continuation(_) => {
+				ctx.stop();
+			}
+			Message::Nop => (),
+		}
+
+		//let schedules = futures::executor::block_on(DbSchedule::get_all(&mut pool_conn)).unwrap();
+		//let schedules_json = serde_json::to_string(&schedules).unwrap();
+		//ctx.text(schedules_json);
+	}
+}

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

@@ -0,0 +1,32 @@
+use std::time::Instant;
+
+use actix_web::{get, web, HttpRequest, HttpResponse};
+use actix_web_actors::ws;
+use emgauwa_lib::types::ConnectedControllersType;
+use sqlx::{Pool, Sqlite};
+
+use crate::handlers::errors::ApiError;
+use crate::handlers::v1::ws::controllers::ControllerWs;
+
+pub mod controllers;
+
+#[get("/api/v1/ws/controllers")]
+pub async fn ws_controllers(
+	pool: web::Data<Pool<Sqlite>>,
+	connected_controllers: web::Data<ConnectedControllersType>,
+	req: HttpRequest,
+	stream: web::Payload,
+) -> Result<HttpResponse, ApiError> {
+	let resp = ws::start(
+		ControllerWs {
+			pool: pool.get_ref().clone(),
+			controller_uid: None,
+			connected_controllers: connected_controllers.get_ref().clone(),
+			hb: Instant::now(),
+		},
+		&req,
+		stream,
+	)
+	.map_err(|_| ApiError::InternalError(String::from("error starting websocket")));
+	resp
+}