package de.juplo.kafka.chat.backend.persistence.kafka;
import de.juplo.kafka.chat.backend.ChatBackendProperties;
-import de.juplo.kafka.chat.backend.ChatBackendProperties.ShardingStrategyType;
import de.juplo.kafka.chat.backend.domain.ChatHome;
-import de.juplo.kafka.chat.backend.domain.ShardedChatHome;
import de.juplo.kafka.chat.backend.domain.ShardingStrategy;
-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 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.clients.producer.KafkaProducer;
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.apache.kafka.clients.producer.ProducerConfig;
+import org.apache.kafka.common.serialization.IntegerDeserializer;
+import org.apache.kafka.common.serialization.IntegerSerializer;
+import org.apache.kafka.common.serialization.StringDeserializer;
+import org.apache.kafka.common.serialization.StringSerializer;
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 org.springframework.kafka.support.serializer.JsonDeserializer;
+import org.springframework.kafka.support.serializer.JsonSerializer;
import java.time.Clock;
import java.time.ZoneId;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
+import java.util.HashMap;
+import java.util.Map;
@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,
properties.getChatroomBufferSize());
}
+ @Bean
+ Producer<Integer, ChatRoomTo> chatRoomChannelProducer(
+ Map<String, String> defaultProducerProperties,
+ IntegerSerializer integerSerializer,
+ JsonSerializer<ChatRoomTo> chatRoomSerializer)
+ {
+ return new KafkaProducer<>(
+ defaultProducerProperties,
+ integerSerializer,
+ chatRoomSerializer);
+ }
+
+ @Bean
+ IntegerSerializer integerSerializer()
+ {
+ return new IntegerSerializer();
+ }
+
+ @Bean
+ JsonSerializer<ChatRoomTo> chatRoomSerializer()
+ {
+ JsonSerializer<ChatRoomTo> serializer = new JsonSerializer<>();
+ return serializer;
+ }
+
+ @Bean
+ Consumer<Integer, ChatRoomTo> chatRoomChannelConsumer(
+ Map<String, String> defaultConsumerProperties,
+ IntegerDeserializer integerDeserializer,
+ JsonDeserializer<ChatRoomTo> chatRoomDeserializer)
+ {
+ Map<String, String> properties = new HashMap<>();
+ properties.put(
+ ConsumerConfig.GROUP_ID_CONFIG,
+ "chat_room_channel");
+ return new KafkaConsumer<>(
+ properties,
+ integerDeserializer,
+ chatRoomDeserializer);
+ }
+
+ @Bean
+ IntegerDeserializer integerDeserializer()
+ {
+ return new IntegerDeserializer();
+ }
+
+ @Bean
+ JsonDeserializer<ChatRoomTo> chatRoomDeserializer()
+ {
+ JsonDeserializer<ChatRoomTo> deserializer = new JsonDeserializer<>();
+ return deserializer;
+ }
+
+ @Bean
+ ShardingStrategy shardingStrategy(ChatBackendProperties properties)
+ {
+ return new KafkaLikeShardingStrategy(properties.getKafka().getNumPartitions());
+ }
+
@Bean
ChatMessageChannel chatMessageChannel(
ChatBackendProperties properties,
}
@Bean
- ShardingStrategy shardingStrategy(ChatBackendProperties properties)
+ Producer<String, MessageTo> chatMessageChannelProducer(
+ Map<String, String> defaultProducerProperties,
+ StringSerializer stringSerializer,
+ JsonSerializer<MessageTo> messageSerializer)
{
- return new KafkaLikeShardingStrategy(properties.getKafka().getNumPartitions());
+ return new KafkaProducer<>(
+ defaultProducerProperties,
+ stringSerializer,
+ messageSerializer);
+ }
+
+ @Bean
+ StringSerializer stringSerializer()
+ {
+ return new StringSerializer();
+ }
+
+ @Bean
+ JsonSerializer<MessageTo> chatMessageSerializer()
+ {
+ JsonSerializer<MessageTo> serializer = new JsonSerializer<>();
+ return serializer;
+ }
+
+ @Bean
+ Consumer<String, MessageTo> chatMessageChannelConsumer(
+ Map<String, String> defaultConsumerProperties,
+ StringDeserializer stringDeserializer,
+ JsonDeserializer<MessageTo> messageDeserializer)
+ {
+ Map<String, String> properties = new HashMap<>();
+ properties.put(
+ ConsumerConfig.GROUP_ID_CONFIG,
+ "chat_message_channel");
+ return new KafkaConsumer<>(
+ properties,
+ stringDeserializer,
+ messageDeserializer);
+ }
+
+ @Bean
+ StringDeserializer stringDeserializer()
+ {
+ return new StringDeserializer();
+ }
+
+ @Bean
+ JsonDeserializer<MessageTo> chatMessageDeserializer()
+ {
+ JsonDeserializer<MessageTo> deserializer = new JsonDeserializer<>();
+ return deserializer;
+ }
+
+ @Bean
+ Map<String, String> defaultProducerProperties(ChatBackendProperties chatBackendProperties)
+ {
+ return Map.of(
+ ProducerConfig.CLIENT_ID_CONFIG,
+ chatBackendProperties.getKafka().getClientId(),
+ ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
+ chatBackendProperties.getKafka().getBootstrapServers());
+ }
+
+ @Bean
+ Map<String, String> defaultConsumerProperties(ChatBackendProperties chatBackendProperties)
+ {
+ return Map.of(
+ ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
+ chatBackendProperties.getKafka().getBootstrapServers(),
+ ConsumerConfig.CLIENT_ID_CONFIG,
+ chatBackendProperties.getKafka().getClientId(),
+ ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG,
+ "false",
+ ConsumerConfig.AUTO_OFFSET_RESET_CONFIG,
+ "earliest");
}
@Bean
projects / demos / kafka / chat / blobdiff