import de.juplo.kafka.chat.backend.domain.ChatHome;
import de.juplo.kafka.chat.backend.domain.ShardingStrategy;
import de.juplo.kafka.chat.backend.persistence.KafkaLikeShardingStrategy;
-import jakarta.annotation.PreDestroy;
-import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.common.serialization.IntegerSerializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.StringSerializer;
-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.kafka.support.serializer.JsonDeserializer;
import org.springframework.kafka.support.serializer.JsonSerializer;
-import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import java.time.Clock;
import java.time.ZoneId;
import java.util.Properties;
-import java.util.concurrent.CompletableFuture;
@ConditionalOnProperty(
name = "services",
havingValue = "kafka")
@Configuration
-@Slf4j
-public class KafkaServicesConfiguration implements ApplicationRunner
+public class KafkaServicesConfiguration
{
- @Autowired
- ThreadPoolTaskExecutor taskExecutor;
- @Autowired
- ConfigurableApplicationContext context;
-
- @Autowired
- ChatMessageChannel chatMessageChannel;
- @Autowired
- ChatRoomChannel chatRoomChannel;
-
- CompletableFuture<Void> chatRoomChannelConsumerJob;
- CompletableFuture<Void> chatMessageChannelConsumerJob;
-
-
- @Override
- public void run(ApplicationArguments args) throws Exception
- {
- log.info("Starting the consumer for the ChatRoomChannel");
- chatRoomChannelConsumerJob = taskExecutor
- .submitCompletable(chatRoomChannel)
- .exceptionally(e ->
- {
- log.error("The consumer for the ChatRoomChannel exited abnormally!", e);
- return null;
- });
- log.info("Starting the consumer for the ChatMessageChannel");
- chatMessageChannelConsumerJob = taskExecutor
- .submitCompletable(chatMessageChannel)
- .exceptionally(e ->
- {
- log.error("The consumer for the ChatMessageChannel exited abnormally!", e);
- return null;
- });
- }
-
- @PreDestroy
- public void joinChatRoomChannelConsumerJob()
- {
- log.info("Waiting for the consumer of the ChatRoomChannel to finish its work");
- chatRoomChannelConsumerJob.join();
- log.info("Joined the consumer of the ChatRoomChannel");
- }
-
- @PreDestroy
- public void joinChatMessageChannelConsumerJob()
- {
- log.info("Waiting for the consumer of the ChatMessageChannel to finish its work");
- chatMessageChannelConsumerJob.join();
- log.info("Joined the consumer of the ChatMessageChannel");
- }
-
-
@Bean
ChatHome kafkaChatHome(
ShardingStrategy shardingStrategy,