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Metaworks4EventSourcingConfig.java
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Metaworks4EventSourcingConfig.java
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package org.metaworks.springboot.configuration;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.apache.kafka.common.serialization.StringSerializer;
import org.metaworks.eventsourcing.EventSender;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.config.KafkaListenerContainerFactory;
import org.springframework.kafka.core.*;
import org.springframework.kafka.listener.ConcurrentMessageListenerContainer;
import java.util.HashMap;
import java.util.Map;
/**
* Created by uengine on 2018. 1. 19..
*/
public class Metaworks4EventSourcingConfig {
@Value("${kafka.bootstrap-servers}")
protected String bootstrapServers;
@Value("${kafka.consumer-topic}")
protected String topicKey;
@Bean
public Map<String, Object> producerConfigs() {
Map<String, Object> props = new HashMap<String, Object>();
// list of host:port pairs used for establishing the initial connections to the Kakfa cluster
props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
return props;
}
@Bean
public ProducerFactory<String, String> producerFactory() {
return new DefaultKafkaProducerFactory<String, String>(producerConfigs());
}
@Bean
public KafkaTemplate<String, String> kafkaTemplate() {
return new KafkaTemplate<String, String>(producerFactory());
}
@Bean
public EventSender eventSender(){
return new EventSender();
}
@Bean
public Map<String, Object> consumerConfigs() {
Map<String, Object> props = new HashMap<String, Object>();
// list of host:port pairs used for establishing the initial connections to the Kakfa cluster
props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
// allows a pool of processes to divide the work of consuming and processing records
props.put(ConsumerConfig.GROUP_ID_CONFIG, topicKey);
return props;
}
@Bean
public ConsumerFactory<String, String> consumerFactory() {
return new DefaultKafkaConsumerFactory<String, String>(consumerConfigs());
}
@Bean
public KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<String, String>> kafkaListenerContainerFactory() {
ConcurrentKafkaListenerContainerFactory<String, String> factory =
new ConcurrentKafkaListenerContainerFactory<String, String>();
factory.setConsumerFactory(consumerFactory());
return factory;
}
}