juplo.de Git - demos/kafka/chat/blob - src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaChatRoomFactory.java

   1 package de.juplo.kafka.chat.backend.persistence.kafka;
   2
   3 import de.juplo.kafka.chat.backend.domain.ChatRoom;
   4 import de.juplo.kafka.chat.backend.domain.ChatRoomFactory;
   5 import de.juplo.kafka.chat.backend.domain.ChatRoomInfo;
   6 import de.juplo.kafka.chat.backend.domain.ShardingStrategy;
   7 import lombok.RequiredArgsConstructor;
   8 import lombok.extern.slf4j.Slf4j;
   9 import reactor.core.publisher.Mono;
  10
  11 import java.time.Clock;
  12 import java.util.UUID;
  13
  14
  15 @RequiredArgsConstructor
  16 @Slf4j
  17 public class KafkaChatRoomFactory implements ChatRoomFactory
  18 {
  19   private final int bufferSize;
  20   private final ShardingStrategy shardingStrategy;
  21   private final Clock clock;
  22   private final ChatMessageChannel chatMessageChannel;
  23
  24   @Override
  25   public Mono<ChatRoomInfo> createChatRoom(UUID id, String name)
  26   {
  27     log.info("Creating ChatRoom with buffer-size {}", bufferSize);
  28     KafkaChatRoomService service = new KafkaChatRoomService(chatMessageChannel, id);
  29     int shard = shardingStrategy.selectShard(id);
  30     ChatRoom chatRoom = new ChatRoom(id, name, shard, clock, service, bufferSize);
  31     chatMessageChannel.putChatRoom(chatRoom);
  32     return Mono.just(chatRoom);
  33   }
  34 }