NEU

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

diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatRoomChannel.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatRoomChannel.java
index da04554..b08a50d 100644 (file)
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatRoomChannel.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatRoomChannel.java
@@ -23,9 +23,10 @@ import java.util.UUID;
 public class ChatRoomChannel implements Runnable
 {
   private final String topic;
-  private final Consumer<String, ChatRoomTo> consumer;
-  private final Producer<String, ChatRoomTo> producer;
-  private final ChatRoomFactory chatRoomFactory;
+  private final Consumer<Integer, ChatRoomTo> consumer;
+  private final Producer<Integer, ChatRoomTo> producer;
+  private final ShardingStrategy shardingStrategy;
+  private final ChatMessageChannel chatMessageChannel;
 
   private boolean running;
 
@@ -41,10 +42,10 @@ public class ChatRoomChannel implements Runnable
     {
       try
       {
-        ConsumerRecords<String, ChatRoomTo> records = consumer.poll(Duration.ofMinutes(5));
+        ConsumerRecords<Integer, ChatRoomTo> records = consumer.poll(Duration.ofMinutes(5));
         log.info("Fetched {} messages", records.count());
 
-        for (ConsumerRecord<String, ChatRoomTo> record : records)
+        for (ConsumerRecord<Integer, ChatRoomTo> record : records)
         {
           UUID id = record.value().getId();
           String name = record.value().getName();
@@ -60,17 +61,27 @@ public class ChatRoomChannel implements Runnable
     }
   }
 
+  void createChatRoom()
+  {
+    log.info("Creating ChatRoom with buffer-size {}", bufferSize);
+    KafkaChatRoomService service = new KafkaChatRoomService(chatMessageChannel, id);
+    int shard = shardingStrategy.selectShard(id);
+    ChatRoom chatRoom = new ChatRoom(id, name, shard, clock, service, bufferSize);
+    chatMessageChannel.putChatRoom(chatRoom);
+  }
+
   Mono<ChatRoomInfo> sendCreateChatRoomRequest(
       UUID chatRoomId,
       String name)
   {
-    ChatRoomTo chatRoomTo = ChatRoomTo.of(chatRoomId, name);
+    int shard = this.shardingStrategy.selectShard(chatRoomId);
+    ChatRoomTo chatRoomTo = ChatRoomTo.of(chatRoomId, name, shard);
     return Mono.create(sink ->
     {
-      ProducerRecord<String, ChatRoomTo> record =
+      ProducerRecord<Integer, ChatRoomTo> record =
           new ProducerRecord<>(
               topic,
-              chatRoomId.toString(),
+              shard,
               chatRoomTo);
 
       producer.send(record, ((metadata, exception) ->