From 1afc96421246a7fd2c697911da2abb4c4fde6341 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Sat, 19 Aug 2023 12:58:27 +0200
Subject: [PATCH] feat: Consumer subscribes in `KafkaServicesApplicationRunner`

---
 .../chat/backend/persistence/kafka/ChatRoomChannel.java    | 2 --
 .../persistence/kafka/KafkaServicesApplicationRunner.java  | 7 +++++++
 2 files changed, 7 insertions(+), 2 deletions(-)

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 c8bc41b0..0b35f8ce 100644
--- 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
@@ -199,8 +199,6 @@ public class ChatRoomChannel implements Runnable, ConsumerRebalanceListener
   @Override
   public void run()
   {
-    consumer.subscribe(List.of(topic), this);
-
     running = true;
 
     while (running)
diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesApplicationRunner.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesApplicationRunner.java
index 5c7e0d8c..8474239b 100644
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesApplicationRunner.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesApplicationRunner.java
@@ -1,5 +1,6 @@
 package de.juplo.kafka.chat.backend.persistence.kafka;
 
+import de.juplo.kafka.chat.backend.ChatBackendProperties;
 import de.juplo.kafka.chat.backend.persistence.kafka.messages.AbstractMessageTo;
 import jakarta.annotation.PreDestroy;
 import lombok.extern.slf4j.Slf4j;
@@ -12,6 +13,7 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
 import java.util.concurrent.CompletableFuture;
 
 
@@ -23,6 +25,9 @@ import java.util.concurrent.CompletableFuture;
 @Slf4j
 public class KafkaServicesApplicationRunner implements ApplicationRunner
 {
+  @Autowired
+  ChatBackendProperties properties;
+
   @Autowired
   ThreadPoolTaskExecutor taskExecutor;
   @Autowired
@@ -39,6 +44,8 @@ public class KafkaServicesApplicationRunner implements ApplicationRunner
   @Override
   public void run(ApplicationArguments args) throws Exception
   {
+    List<String> topics = List.of(properties.getKafka().getChatRoomChannelTopic());
+    chatRoomChannelConsumer.subscribe(topics, chatRoomChannel);
     log.info("Starting the consumer for the ChatRoomChannel");
     chatRoomChannelConsumerJob = taskExecutor
         .submitCompletable(chatRoomChannel)
-- 
2.20.1