feat: Moved persistence-logic from `ChatHome` into `ChatHomeService`

[demos/kafka/chat] / src / main / java / de / juplo / kafka / chat / backend / persistence / InMemoryChatHomeService.java

diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/InMemoryChatHomeService.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/InMemoryChatHomeService.java
index 41ecd4c..b2f94ec 100644 (file)
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/InMemoryChatHomeService.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/InMemoryChatHomeService.java
@@ -1,32 +1,57 @@
 package de.juplo.kafka.chat.backend.persistence;
 
-import de.juplo.kafka.chat.backend.domain.Chatroom;
-import de.juplo.kafka.chat.backend.domain.ChatroomFactory;
-import lombok.RequiredArgsConstructor;
+import de.juplo.kafka.chat.backend.domain.ChatRoom;
+import de.juplo.kafka.chat.backend.domain.ChatHomeService;
+import lombok.extern.slf4j.Slf4j;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
 
+import java.time.Clock;
+import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.Map;
 import java.util.UUID;
 
 
-@RequiredArgsConstructor
-public class InMemoryChatroomFactory implements ChatroomFactory<InMemoryChatroomService>
+@Slf4j
+public class InMemoryChatHomeService implements ChatHomeService<InMemoryChatRoomService>
 {
+  private final Map<UUID, ChatRoom> chatrooms;
+  private final Clock clock;
   private final int bufferSize;
 
 
+  public InMemoryChatHomeService(
+      Flux<ChatRoom> chatroomFlux,
+      Clock clock,
+      int bufferSize)
+  {
+    log.debug("Creating InMemoryChatHomeService with buffer-size {} (for created ChatRoom's)", bufferSize);
+    this.chatrooms = new HashMap<>();
+    chatroomFlux.subscribe(chatroom -> chatrooms.put(chatroom.getId(), chatroom));
+    this.clock = clock;
+    this.bufferSize = bufferSize;
+  }
+
+  @Override
+  public Mono<ChatRoom> createChatRoom(UUID id, String name)
+  {
+    InMemoryChatRoomService service =
+        new InMemoryChatRoomService(new LinkedHashMap<>());
+    ChatRoom chatRoom = new ChatRoom(id, name, clock, service, bufferSize);
+    chatrooms.put(chatRoom.getId(), chatRoom);
+    return Mono.just(chatRoom);
+  }
+
   @Override
-  public Chatroom createChatroom(UUID id, String name)
+  public Mono<ChatRoom> getChatRoom(UUID id)
   {
-    InMemoryChatroomService chatroomService =
-        new InMemoryChatroomService(new LinkedHashMap<>());
-    return new Chatroom(id, name, chatroomService, bufferSize);
+    return Mono.justOrEmpty(chatrooms.get(id));
   }
 
-  public Chatroom restoreChatroom(
-      UUID id,
-      String name,
-      InMemoryChatroomService chatroomService)
+  @Override
+  public Flux<ChatRoom> getChatRooms()
   {
-    return new Chatroom(id, name, chatroomService, bufferSize);
+    return Flux.fromStream(chatrooms.values().stream());
   }
 }