juplo.de Git - demos/kafka/chat/blob - src/main/java/de/juplo/kafka/chat/backend/domain/ChatHome.java

   1 package de.juplo.kafka.chat.backend.domain;
   2
   3 import lombok.extern.slf4j.Slf4j;
   4 import reactor.core.publisher.Flux;
   5 import reactor.core.publisher.Mono;
   6
   7 import java.util.*;
   8
   9
  10 @Slf4j
  11 public class ChatHome
  12 {
  13   private final Map<UUID, ChatRoom> chatrooms;
  14   private final ChatHomeService service;
  15
  16   public ChatHome(ChatHomeService service, Flux<ChatRoom> chatroomFlux)
  17   {
  18     log.debug("Creating ChatHome with factory: {}", service);
  19     this.service = service;
  20     this.chatrooms = new HashMap<>();
  21     chatroomFlux.subscribe(chatroom -> chatrooms.put(chatroom.getId(), chatroom));
  22   }
  23
  24   public Mono<ChatRoom> createChatroom(String name)
  25   {
  26     ChatRoom chatroom = service.createChatroom(UUID.randomUUID(), name);
  27     chatrooms.put(chatroom.getId(), chatroom);
  28     return Mono.justOrEmpty(chatroom);
  29   }
  30
  31   public Mono<ChatRoom> getChatroom(UUID id)
  32   {
  33     return Mono
  34         .justOrEmpty(chatrooms.get(id))
  35         .or(Mono.error(() -> new UnknownChatroomException(id)));
  36   }
  37
  38   public Flux<ChatRoom> list()
  39   {
  40     return Flux.fromStream(chatrooms.values().stream());
  41   }
  42 }