- if (chatHomes[shard] == null)
- throw new ShardNotOwnedException(shard);
- return chatHomes[shard].getChatRoom(id);
+ return chatHomes[shard] == null
+ ? Mono.error(new ShardNotOwnedException(shard))
+ : chatHomes[shard]
+ .getChatRoom(id)
+ .onErrorMap(throwable -> throwable instanceof UnknownChatroomException
+ ? new UnknownChatroomException(
+ id,
+ shard,
+ ownedShards.stream().mapToInt(i -> i.intValue()).toArray())
+ : throwable);