Non Spring Boot Kafka topic configuration.

KafkaTopicConfiguration.java

package io.stockgeeks.kafka.config;

import org.apache.kafka.clients.admin.AdminClientConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.core.KafkaAdmin;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class KafkaTopicConfiguration {

  @Value(value = "${kafka.bootstrapServers:localhost:9092}")
  private String bootstrapServers;

  @Bean
  public KafkaAdmin kafkaAdmin() {
    Map<String, Object> configs = new HashMap<>();
    // Depending on you Kafka Cluster setup you need to configure
    // additional properties!
    configs.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
    return new KafkaAdmin(configs);
  }
}