refactor: Moved exceptions into package `exceptions` - Aligned Code

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

diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/SimpleChatHome.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/SimpleChatHome.java
index c2d25b2..868c01e 100644 (file)
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/SimpleChatHome.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/inmemory/SimpleChatHome.java
@@ -1,6 +1,8 @@
 package de.juplo.kafka.chat.backend.persistence.inmemory;
 
 import de.juplo.kafka.chat.backend.domain.*;
+import de.juplo.kafka.chat.backend.domain.exceptions.UnknownChatroomException;
+import de.juplo.kafka.chat.backend.persistence.StorageStrategy;
 import lombok.extern.slf4j.Slf4j;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
@@ -13,34 +15,41 @@ import java.util.*;
 public class SimpleChatHome implements ChatHome
 {
   private final Integer shard;
-  private final Map<UUID, ChatRoom> chatRooms;
+  private final Map<UUID, ChatRoomInfo> chatRoomInfo;
+  private final Map<UUID, ChatRoomData> chatRoomData;
   private final Clock clock;
   private final int bufferSize;
 
 
 
   public SimpleChatHome(
-      Flux<ChatRoom> chatroomFlux,
+      StorageStrategy storageStrategy,
       Clock clock,
       int bufferSize)
   {
-    this(null, chatroomFlux, clock, bufferSize);
+    this(
+        null,
+        storageStrategy,
+        clock,
+        bufferSize);
   }
 
   public SimpleChatHome(
       Integer shard,
-      Flux<ChatRoom> chatroomFlux,
+      StorageStrategy storageStrategy,
       Clock clock,
       int bufferSize)
   {
     log.info("Created SimpleChatHome for shard {}", shard);
 ;
     this.shard = shard;
-    this.chatRooms = new HashMap<>();
-    chatroomFlux
-        .filter(chatRoom ->
+    this.chatRoomInfo = new HashMap<>();
+    this.chatRoomData = new HashMap<>();
+    storageStrategy
+        .readChatRoomInfo()
+        .filter(info ->
         {
-          if (shard == null || chatRoom.getShard() == shard)
+          if (shard == null || info.getShard() == shard)
           {
             return true;
           }
@@ -49,12 +58,24 @@ public class SimpleChatHome implements ChatHome
             log.info(
                 "SimpleChatHome for shard {} ignores not owned chat-room {}",
                 shard,
-                chatRoom);
+                info);
             return false;
           }
         })
         .toStream()
-        .forEach(chatroom -> chatRooms.put(chatroom.getId(), chatroom));
+        .forEach(info ->
+        {
+          UUID chatRoomId = info.getId();
+          chatRoomInfo.put(chatRoomId, info);
+          Flux<Message> messageFlux =
+              storageStrategy.readChatRoomData(chatRoomId);
+          chatRoomData.put(
+              info.getId(),
+              new ChatRoomData(
+                  clock,
+                  new InMemoryChatRoomService(messageFlux),
+                  bufferSize));
+        });
     this.clock = clock;
     this.bufferSize = bufferSize;
   }
@@ -65,22 +86,37 @@ public class SimpleChatHome implements ChatHome
   {
     log.info("Creating ChatRoom with buffer-size {}", bufferSize);
     ChatRoomService service = new InMemoryChatRoomService(Flux.empty());
-    ChatRoom chatRoom = new ChatRoom(id, name, shard, clock, service, bufferSize);
-    chatRooms.put(id, chatRoom);
-    return Mono.just(chatRoom);
+    ChatRoomInfo chatRoomInfo = new ChatRoomInfo(id, name, shard);
+    this.chatRoomInfo.put(id, chatRoomInfo);
+    ChatRoomData chatRoomData = new ChatRoomData(clock, service, bufferSize);
+    this.chatRoomData.put(id, chatRoomData);
+    return Mono.just(chatRoomInfo);
   }
 
   @Override
-  public Mono<ChatRoom> getChatRoom(UUID id)
+  public Mono<ChatRoomInfo> getChatRoomInfo(UUID id)
   {
     return Mono
-        .justOrEmpty(chatRooms.get(id))
+        .justOrEmpty(chatRoomInfo.get(id))
         .switchIfEmpty(Mono.error(() -> new UnknownChatroomException(id)));
   }
 
   @Override
-  public Flux<ChatRoom> getChatRooms()
+  public Flux<ChatRoomInfo> getChatRoomInfo()
+  {
+    return Flux.fromIterable(chatRoomInfo.values());
+  }
+
+  @Override
+  public Mono<ChatRoomData> getChatRoomData(UUID id)
+  {
+    return Mono
+        .justOrEmpty(chatRoomData.get(id))
+        .switchIfEmpty(Mono.error(() -> new UnknownChatroomException(id)));
+  }
+
+  public Flux<ChatRoomData> getChatRoomData()
   {
-    return Flux.fromIterable(chatRooms.values());
+    return Flux.fromIterable(chatRoomData.values());
   }
 }