order manager is an actor

rustybot/src/managers.rs

@@ -293,8 +293,41 @@ impl PositionManager {
 
 pub type TrackedPositionsMap = HashMap<u64, ExecutedOrder>;
 
+pub struct OrderManagerHandle {
+    sender: Sender<SignalKind>,
+}
+
+impl OrderManagerHandle {
+    async fn run_order_manager(mut manager: OrderManager) {
+        while let Some(msg) = manager.receiver.recv().await {
+            manager.handle_message(msg).await.unwrap();
+        }
+    }
+
+    pub fn new(pair: SymbolPair, client: Client, strategy: Box<dyn OrderStrategy>) -> Self {
+        let (sender, receiver) = channel(8);
+
+        let manager = OrderManager::new(receiver, pair, client, strategy);
+
+        tokio::spawn(OrderManagerHandle::run_order_manager(manager));
+
+        Self { sender }
+    }
+
+    pub async fn update(&mut self, tick: u64) {
+        self.sender.send(SignalKind::Update(tick)).await.unwrap();
+    }
+
+    pub async fn close_position(&mut self, position: Position) {
+        self.sender
+            .send(SignalKind::ClosePosition(position))
+            .await
+            .unwrap();
+    }
+}
+
 pub struct OrderManager {
-    // receiver: Receiver<SignalKind>,
+    receiver: Receiver<SignalKind>,
     tracked_positions: TrackedPositionsMap,
     pair: SymbolPair,
     open_orders: Vec<ExecutedOrder>,
@@ -306,13 +339,13 @@ impl OrderManager {
     const UNDERCUT_PERC: f64 = 0.005;
 
     pub fn new(
-        // receiver: Receiver<SignalKind>,
+        receiver: Receiver<SignalKind>,
         pair: SymbolPair,
         client: Client,
         strategy: Box<dyn OrderStrategy>,
     ) -> Self {
         OrderManager {
-            // receiver,
+            receiver,
             pair,
             open_orders: Vec::new(),
             client,
@@ -321,6 +354,18 @@ impl OrderManager {
         }
     }
 
+    pub async fn handle_message(&mut self, msg: SignalKind) -> Result<(), BoxError> {
+        match msg {
+            SignalKind::Update(_) => {
+                self.update();
+            }
+            SignalKind::ClosePosition(position) => self.close_position(&position).await?,
+            _ => {}
+        };
+
+        Ok(())
+    }
+
     pub async fn close_position(&mut self, position: &Position) -> Result<(), BoxError> {
         let open_order = self.tracked_positions.get(&position.id());
 
@@ -381,7 +426,7 @@ impl OrderManager {
 pub struct ExchangeManager {
     kind: ExchangeKind,
     price_managers: Vec<PriceManagerHandle>,
-    order_managers: Vec<OrderManager>,
+    order_managers: Vec<OrderManagerHandle>,
     position_managers: Vec<PositionManagerHandle>,
     dispatcher: Dispatcher,
     client: Client,
@@ -401,7 +446,7 @@ impl ExchangeManager {
                 client.clone(),
                 Box::new(TrailingStop::new()),
             ));
-            order_managers.push(OrderManager::new(
+            order_managers.push(OrderManagerHandle::new(
                 p.clone(),
                 client.clone(),
                 Box::new(FastOrderStrategy {}),