Treat InvalidOrderId from maker as Rejected

If the maker tells the taker that the take request was for an invalid
order ID, we should do something other than panic. For example,
logging and treating the situation as if the maker had rejected the
take request.

daemon/src/taker_cfd.rs

@@ -202,13 +202,7 @@ impl<O, M> Actor<O, M> {
     }
 
     async fn handle_order_rejected(&mut self, order_id: OrderId) -> Result<()> {
-        tracing::debug!(%order_id, "Order rejected");
-
-        let mut conn = self.db.acquire().await?;
-        let mut cfd = load_cfd_by_order_id(order_id, &mut conn).await?;
-        cfd.state = CfdState::rejected();
-
-        append_cfd_state(&cfd, &mut conn, &self.cfd_feed_actor_inbox).await?;
+        self.append_cfd_state_rejected(order_id).await?;
 
         Ok(())
     }
@@ -291,6 +285,25 @@ impl<O, M> Actor<O, M> {
         .await?;
         Ok(())
     }
+
+    async fn handle_invalid_order_id(&mut self, order_id: OrderId) -> Result<()> {
+        tracing::debug!(%order_id, "Invalid order ID");
+
+        self.append_cfd_state_rejected(order_id).await?;
+
+        Ok(())
+    }
+
+    async fn append_cfd_state_rejected(&mut self, order_id: OrderId) -> Result<()> {
+        tracing::debug!(%order_id, "Order rejected");
+
+        let mut conn = self.db.acquire().await?;
+        let mut cfd = load_cfd_by_order_id(order_id, &mut conn).await?;
+        cfd.state = CfdState::rejected();
+        append_cfd_state(&cfd, &mut conn, &self.cfd_feed_actor_inbox).await?;
+
+        Ok(())
+    }
 }
 
 impl<O, M> Actor<O, M>
@@ -678,7 +691,9 @@ where
             wire::MakerToTaker::RejectSettlement(order_id) => {
                 log_error!(self.handle_settlement_rejected(order_id))
             }
-            wire::MakerToTaker::InvalidOrderId(_) => todo!(),
+            wire::MakerToTaker::InvalidOrderId(order_id) => {
+                log_error!(self.handle_invalid_order_id(order_id))
+            }
             wire::MakerToTaker::Protocol(setup_msg) => {
                 log_error!(self.handle_inc_protocol_msg(setup_msg))
             }