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

   1 package de.juplo.kafka.chat.backend;
   2
   3 import de.juplo.kafka.chat.backend.domain.ChatHome;
   4 import com.fasterxml.jackson.databind.ObjectMapper;
   5 import de.juplo.kafka.chat.backend.domain.ChatHomeService;
   6 import de.juplo.kafka.chat.backend.persistence.inmemory.InMemoryChatHomeService;
   7 import de.juplo.kafka.chat.backend.persistence.storage.files.FilesStorageStrategy;
   8 import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
   9 import de.juplo.kafka.chat.backend.persistence.inmemory.InMemoryChatRoomService;
  10 import org.springframework.boot.context.properties.EnableConfigurationProperties;
  11 import org.springframework.context.annotation.Bean;
  12 import org.springframework.context.annotation.Configuration;
  13
  14 import java.nio.file.Paths;
  15 import java.time.Clock;
  16
  17
  18 @Configuration
  19 @EnableConfigurationProperties(ChatBackendProperties.class)
  20 public class ChatBackendConfiguration
  21 {
  22   @Bean
  23   public ChatHome chatHome(ChatHomeService chatHomeService)
  24   {
  25     return new ChatHome(chatHomeService);
  26   }
  27
  28   @Bean
  29   InMemoryChatHomeService chatHomeService(
  30       StorageStrategy storageStrategy,
  31       Clock clock,
  32       ChatBackendProperties properties)
  33   {
  34     return new InMemoryChatHomeService(
  35         storageStrategy.read(),
  36         clock,
  37         properties.getChatroomBufferSize());
  38   }
  39
  40   @Bean
  41   public StorageStrategy storageStrategy(
  42       ChatBackendProperties properties,
  43       Clock clock,
  44       ObjectMapper mapper)
  45   {
  46     return new FilesStorageStrategy(
  47         Paths.get(properties.getStorageDirectory()),
  48         clock,
  49         properties.getChatroomBufferSize(),
  50         messageFlux -> new InMemoryChatRoomService(messageFlux),
  51         mapper);
  52   }
  53
  54   @Bean
  55   public Clock clock()
  56   {
  57     return Clock.systemDefaultZone();
  58   }
  59 }