juplo.de Git - demos/kafka/chat/blob - src/main/java/de/juplo/kafka/chat/backend/storage/mongodb/MongoDbStorageStrategy.java

   1 package de.juplo.kafka.chat.backend.storage.mongodb;
   2
   3 import de.juplo.kafka.chat.backend.domain.ChatRoomInfo;
   4 import de.juplo.kafka.chat.backend.domain.Message;
   5 import de.juplo.kafka.chat.backend.implementation.StorageStrategy;
   6 import lombok.RequiredArgsConstructor;
   7 import lombok.extern.slf4j.Slf4j;
   8 import reactor.core.publisher.Flux;
   9
  10 import java.util.UUID;
  11
  12
  13 @RequiredArgsConstructor
  14 @Slf4j
  15 public class MongoDbStorageStrategy implements StorageStrategy
  16 {
  17   private final ChatRoomRepository chatRoomRepository;
  18   private final MessageRepository messageRepository;
  19
  20
  21   @Override
  22   public Flux<ChatRoomInfo> writeChatRoomInfo(Flux<ChatRoomInfo> chatRoomInfoFlux)
  23   {
  24     return chatRoomInfoFlux
  25         .map(ChatRoomTo::from)
  26         .map(chatRoomRepository::save)
  27         .map(ChatRoomTo::toChatRoomInfo);
  28   }
  29
  30   @Override
  31   public Flux<ChatRoomInfo> readChatRoomInfo()
  32   {
  33     return Flux
  34         .fromIterable(chatRoomRepository.findAll())
  35         .map(ChatRoomTo::toChatRoomInfo);
  36   }
  37
  38   @Override
  39   public Flux<Message> writeChatRoomData(UUID chatRoomId, Flux<Message> messageFlux)
  40   {
  41     return messageFlux
  42         .map(message -> MessageTo.from(chatRoomId, message))
  43         .map(messageRepository::save)
  44         .map(MessageTo::toMessage);
  45   }
  46
  47   @Override
  48   public Flux<Message> readChatRoomData(UUID chatRoomId)
  49   {
  50     return Flux
  51         .fromIterable(messageRepository.findByChatRoomIdOrderBySerialAsc(chatRoomId.toString()))
  52         .map(MessageTo::toMessage);
  53   }
  54 }