Fix deadlock when on_click is called

server/src/server/game.rs

@@ -149,7 +149,6 @@ impl GameService {
     }
 
     async fn get_default_status(&self, uuid: uuid::Uuid) -> Result<Option<MessageStatus>, Status> {
-
         log::info!("Getting the deafult status for {}", uuid);
         let lobby = {
             let mut conn = self.conn.write().await;
@@ -159,8 +158,7 @@ impl GameService {
             };
             lobby
         };
-        let r = 
-        Ok(self
+        let r = Ok(self
             .running_games
             .read()
             .await
@@ -214,7 +212,6 @@ impl game_server::Game for GameService {
         // log::info!("Loading back image [{:?}]", time.elapsed());
         let back_buf = tokio::fs::read(back).await.unwrap();
 
-
         log::info!("Loaded images [{:?}]", time.elapsed());
         Ok(Response::new(Image {
             face: face_buf,
@@ -228,13 +225,17 @@ impl game_server::Game for GameService {
     ) -> Result<tonic::Response<()>, Status> {
         let uuid = client_id::get(request.metadata()).map_err(|x| match x {
             client_id::Error::NotSet => Status::failed_precondition("client_id must be set"),
-            client_id::Error::MalformedUuid => Status::failed_precondition("malformed client_id"),
+            client_id::Error::MalformedUuid => {
+                Status::failed_precondition("malformed client_id")
+            }
         })?;
+        {
             let mut conn = self.conn.write().await;
             let lobby: u32 = match conn.get_lobby_for_user(uuid).await {
                 Some(l) => l,
                 None => return Err(Status::failed_precondition("User isn't in a lobby")),
             };
+            log::debug!("{} clicked a card in the lobby {}", uuid, lobby);
             let games_lock = self.running_games.read().await;
             let mut game_lock = match games_lock.get(&lobby) {
                 Some(x) => x.write().await,
@@ -261,6 +262,7 @@ impl game_server::Game for GameService {
                 pile_name: card.pile_name,
             };
             game.on_click(card, game.get_player_for_uuid(&uuid).unwrap());
+        } // drop the connection so that the lock is released
         self.update_status(uuid).await?;
         Ok(Response::new(()))
     }
@@ -282,9 +284,7 @@ impl game_server::Game for GameService {
             r
         });
         log::info!("Status is acquired");
-        let r= Ok(Response::new(
-            status,
-        ));
+        let r = Ok(Response::new(status));
         log::info!("Given game status to {}", uuid);
         r
     }

unity/Assets/Scripts/Client.cs

@@ -210,12 +210,12 @@ public static class Client
 
 		public int GetUserIndex(string user) {
 			var status = game_client.status(new Google.Protobuf.WellKnownTypes.Empty(), new Metadata { new Metadata.Entry("client_id", connId) });
-			return status.Names.IndexOf(new Common.Name() { Name_ = user });
+			return status.Names.IndexOf(new Common.Name { Name_ = user });
 		}
 
 		public Dictionary<string, Dictionary<string, Game.MessageStatus.Types.Pile>> OnClickCard(string pileName, bool isCommonPile, int cardIdx, string user) {
 			Game.PileKind pileKind = new Game.PileKind() { Owned = (uint)GetUserIndex(user) };
-			game_client.onClick(new Game.CardId() { PileKind = pileKind, CardIndex = new Game.CardIndex() { Index = (uint)cardIdx }, PileName = pileName }, new Metadata { new Metadata.Entry("client_id", connId) });
+			game_client.onClick(new Game.CardId { PileKind = pileKind, CardIndex = new Game.CardIndex { Index = (uint)cardIdx }, PileName = pileName }, new Metadata { new Metadata.Entry("client_id", connId) });
 			return GetPiles(user);
 		}