feat: Dead Letter Topic 프로듀서 설정 클래스

- KafkaProducer는 Thread-Safe이기에 Bean으로 등록하여 사용함.

src/main/java/com/sangdol/consumer/infrastructure/kafka/producer/ProducerConfiguration.java

@@ -0,0 +1,39 @@
+package com.sangdol.consumer.infrastructure.kafka.producer;
+
+import java.util.Properties;
+
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerConfig;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.retry.annotation.EnableRetry;
+
+import com.sangdol.consumer.infrastructure.kafka.common.KafkaProperties;
+
+import lombok.RequiredArgsConstructor;
+
+@EnableRetry
+@Configuration
+@RequiredArgsConstructor
+@EnableConfigurationProperties(value = KafkaProperties.class)
+public class ProducerConfiguration {
+
+	@Bean(destroyMethod = "close")
+	public KafkaProducer<String, String> dltProducer(KafkaProperties kafkaProperties) {
+		return new KafkaProducer<>(producerProperties(kafkaProperties));
+	}
+
+	private Properties producerProperties(KafkaProperties properties) {
+		Properties props = new Properties();
+		KafkaProperties.Producer producer = properties.getProducer();
+		KafkaProperties.BootStrapServers bootStrapServers = properties.getBootStrapServers();
+		props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootStrapServers.getAddressByProtocol(producer.protocol()));
+		props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, producer.keySerializer());
+		props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, producer.valueSerializer());
+		props.put(ProducerConfig.ACKS_CONFIG, producer.acks());
+		props.put(ProducerConfig.LINGER_MS_CONFIG, producer.lingerMs());
+
+		return props;
+	}
+}