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.InMemoryChatHomeService;
   7 import de.juplo.kafka.chat.backend.persistence.LocalJsonFilesStorageStrategy;
   8 import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
   9 import org.springframework.boot.context.properties.EnableConfigurationProperties;
  10 import org.springframework.context.annotation.Bean;
  11 import org.springframework.context.annotation.Configuration;
  12
  13 import java.nio.file.Paths;
  14 import java.time.Clock;
  15
  16
  17 @Configuration
  18 @EnableConfigurationProperties(ChatBackendProperties.class)
  19 public class ChatBackendConfiguration
  20 {
  21   @Bean
  22   public ChatHome chatHome(
  23       ChatHomeService chatHomeService,
  24       StorageStrategy storageStrategy)
  25   {
  26     return new ChatHome(chatHomeService, storageStrategy.readChatrooms());
  27   }
  28
  29   @Bean
  30   public StorageStrategy storageStrategy(
  31       ChatBackendProperties properties,
  32       ObjectMapper mapper,
  33       InMemoryChatHomeService chatHomeService)
  34   {
  35     return new LocalJsonFilesStorageStrategy(
  36         Paths.get(properties.getDatadir()),
  37         mapper,
  38         chatHomeService);
  39   }
  40
  41   @Bean
  42   InMemoryChatHomeService chatHomeService(
  43       Clock clock,
  44       ChatBackendProperties properties)
  45   {
  46     return new InMemoryChatHomeService(clock, properties.getChatroomBufferSize());
  47   }
  48
  49   @Bean
  50   public Clock clock()
  51   {
  52     return Clock.systemDefaultZone();
  53   }
  54 }