NEU

[demos/kafka/chat] / src / test / java / de / juplo / kafka / chat / backend / persistence / kafka / KafkaServicesConfiguration.java

diff --git a/src/test/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesConfiguration.java b/src/test/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesConfiguration.java
index 55aa6f8..3148c6f 100644 (file)
--- a/src/test/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesConfiguration.java
+++ b/src/test/java/de/juplo/kafka/chat/backend/persistence/kafka/KafkaServicesConfiguration.java
@@ -9,15 +9,23 @@ import de.juplo.kafka.chat.backend.domain.SimpleChatHome;
 import de.juplo.kafka.chat.backend.persistence.KafkaLikeShardingStrategy;
 import de.juplo.kafka.chat.backend.persistence.inmemory.InMemoryChatHomeService;
 import de.juplo.kafka.chat.backend.persistence.inmemory.InMemoryChatRoomFactory;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.consumer.Consumer;
 import org.apache.kafka.clients.producer.Producer;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+import org.springframework.util.concurrent.ListenableFuture;
 
 import java.time.Clock;
 import java.time.ZoneId;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
 
 
 @ConditionalOnProperty(
@@ -25,8 +33,50 @@ import java.time.ZoneId;
     name = "services",
     havingValue = "kafka")
 @Configuration
+@Slf4j
 public class KafkaServicesConfiguration implements ApplicationRunner
 {
+  @Autowired
+  ThreadPoolTaskExecutor taskExecutor;
+  @Autowired
+  ConfigurableApplicationContext context;
+
+  @Autowired
+  ChatMessageChannel chatMessageChannel;
+
+  CompletableFuture<Optional<Exception>> chatRoomChannelConsumerJob;
+  CompletableFuture<Optional<Exception>> chatMessageChannelConsumerJob;
+
+
+  @Override
+  public void run(ApplicationArguments args) throws Exception
+  {
+    log.info("Starting the consumer for the ChatRoomChannel");
+    chatRoomChannelConsumerJob = taskExecutor.submitCompletable(chatMessageChannel);
+    chatRoomChannelConsumerJob.thenAccept(exceptionOptional ->
+    {
+      exceptionOptional.ifPresent();
+          log.info("SimpleConsumer exited normally, exit-status: {}", exitStatus);
+          SpringApplication.exit(context, () -> exitStatus);
+        },
+        t ->
+        {
+          log.error("SimpleConsumer exited abnormally!", t);
+          SpringApplication.exit(context, () -> 2);
+        });
+  }
+
+  @PreDestroy
+  public void shutdown() throws ExecutionException, InterruptedException
+  {
+    log.info("Signaling SimpleConsumer to quit its work");
+    kafkaConsumer.wakeup();
+    log.info("Waiting for SimpleConsumer to finish its work");
+    consumerJob.get();
+    log.info("SimpleConsumer finished its work");
+  }
+
+
   @Bean
   ChatHome kafkaChatHome(
       ShardingStrategy shardingStrategy,