juplo.de Git - demos/kafka/chat/blob - src/main/java/de/juplo/kafka/chat/backend/implementation/StorageStrategy.java

   1 package de.juplo.kafka.chat.backend.persistence;
   2
   3 import de.juplo.kafka.chat.backend.domain.ChatHomeService;
   4 import de.juplo.kafka.chat.backend.domain.ChatRoomInfo;
   5 import de.juplo.kafka.chat.backend.domain.Message;
   6 import reactor.core.publisher.Flux;
   7
   8 import java.util.UUID;
   9
  10
  11 public interface StorageStrategy
  12 {
  13   default void write(ChatHomeService chatHomeService)
  14   {
  15     writeChatRoomInfo(
  16         chatHomeService
  17             .getChatRoomInfo()
  18             .doOnNext(chatRoomInfo ->
  19                 writeChatRoomData(
  20                     chatRoomInfo.getId(),
  21                     chatHomeService
  22                         .getChatRoomData(chatRoomInfo.getId())
  23                         .flatMapMany(chatRoomData -> chatRoomData.getMessages()))));
  24   }
  25
  26   void writeChatRoomInfo(Flux<ChatRoomInfo> chatRoomInfoFlux);
  27   Flux<ChatRoomInfo> readChatRoomInfo();
  28   void writeChatRoomData(UUID chatRoomId, Flux<Message> messageFlux);
  29   Flux<Message> readChatRoomData(UUID chatRoomId);
  30 }