SpringBoot整合Kafka多数据源

配置文件

spring.kafka.wh.bootstrap-servers=192.168.1.130:9092,192.168.1.130:9093
spring.kafka.wh.consumer.group-id=kafka_demo
spring.kafka.wh.consumer.enable-auto-commit=false
spring.kafka.es.consumer.auto-offset-reset=latest

spring.kafka.es.bootstrap-servers=192.168.1.130:9094
spring.kafka.es.consumer.group-id=kafka_demo
spring.kafka.es.consumer.enable-auto-commit=false
spring.kafka.es.consumer.auto-offset-reset=latest
log-topic-name=test

KafkaWhConfig

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.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.EnableKafka;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.config.KafkaListenerContainerFactory;
import org.springframework.kafka.core.*;
import org.springframework.kafka.listener.ConcurrentMessageListenerContainer;
import org.springframework.kafka.listener.ContainerProperties;

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

@Configuration
public class KafkaWhConfig {

    @Value("${spring.kafka.wh.bootstrap-servers}")
    private String bootstrapServers;
    @Value("${spring.kafka.wh.consumer.group-id}")
    private String groupId;
    @Value("${spring.kafka.wh.consumer.enable-auto-commit}")
    private boolean enableAutoCommit;
    @Value("${spring.kafka.wh.consumer.auto-offset-reset}")
    private String autoOffsetReset;

    @Bean(name = "kafkaWhTemplate")
    public KafkaTemplate<String, String> kafkaWhTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }

    @Bean(name = "kafkaWhContainerFactory")
    KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<Integer, String>> kafkaWhContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<Integer, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        factory.setConcurrency(3);
        //Listener配置
        factory.getContainerProperties()
                .setPollTimeout(3000);
        factory.getContainerProperties()
                .setAckMode(ContainerProperties.AckMode.MANUAL_IMMEDIATE);
        factory.getContainerProperties()
                .setPollTimeout(15000);
        return factory;
    }

    private ProducerFactory<String, String> producerFactory() {
        return new DefaultKafkaProducerFactory<>(producerConfigs());
    }

    public ConsumerFactory<Integer, String> consumerFactory() {
        return new DefaultKafkaConsumerFactory<>(consumerConfigs());
    }

    private Map<String, Object> producerConfigs() {
        Map<String, Object> props = new HashMap<>();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.RETRIES_CONFIG, 10);
        props.put(ProducerConfig.ACKS_CONFIG, "all");
        props.put(ProducerConfig.BATCH_SIZE_CONFIG, 1000);
        props.put(ProducerConfig.BUFFER_MEMORY_CONFIG, 33554432);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        return props;
    }

    private Map<String, Object> consumerConfigs() {
        Map<String, Object> props = new HashMap<>();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
        props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, enableAutoCommit);
        props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, autoOffsetReset);
        props.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, 1000);
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        return props;
    }
}

KafkaEsConfig

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.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.KafkaListenerConfigurer;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.config.KafkaListenerConfigUtils;
import org.springframework.kafka.config.KafkaListenerContainerFactory;
import org.springframework.kafka.core.*;
import org.springframework.kafka.listener.ConcurrentMessageListenerContainer;
import org.springframework.kafka.listener.ContainerProperties;

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

@Configuration
public class KafkaEsConfig {


    @Value("${spring.kafka.es.bootstrap-servers}")
    private String bootstrapServers;
    @Value("${spring.kafka.es.consumer.group-id}")
    private String groupId;
    @Value("${spring.kafka.es.consumer.enable-auto-commit}")
    private boolean enableAutoCommit;
    @Value("${spring.kafka.es.consumer.auto-offset-reset}")
    private String autoOffsetReset;

    @Bean(name = "kafkaEsTemplate")
    public KafkaTemplate<String, String> kafkaEsTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }

    @Bean(name = "kafkaEsContainerFactory")
    KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<Integer, String>> kafkaEsContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<Integer, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        factory.setConcurrency(3);
        //Listener配置
        factory.getContainerProperties()
                .setPollTimeout(3000);
        factory.getContainerProperties()
                .setAckMode(ContainerProperties.AckMode.MANUAL_IMMEDIATE);
        factory.getContainerProperties()
                .setPollTimeout(15000);
        return factory;
    }

    private ProducerFactory<String, String> producerFactory() {
        return new DefaultKafkaProducerFactory<>(producerConfigs());
    }

    public ConsumerFactory<Integer, String> consumerFactory() {
        return new DefaultKafkaConsumerFactory<>(consumerConfigs());
    }

    private Map<String, Object> producerConfigs() {
        Map<String, Object> props = new HashMap<>();
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.RETRIES_CONFIG, 10);
        props.put(ProducerConfig.ACKS_CONFIG, "all");
        props.put(ProducerConfig.BATCH_SIZE_CONFIG, 1000);
        props.put(ProducerConfig.BUFFER_MEMORY_CONFIG, 33554432);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        return props;
    }

    private Map<String, Object> consumerConfigs() {
        Map<String, Object> props = new HashMap<>();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
        props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, enableAutoCommit);
        props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, autoOffsetReset);
        props.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, 1000);
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        return props;
    }
}

前置动态处理DataSourceHolder【利用Interceptor + reqHeader】

CityEnum

public enum CityEnum {
    /*武汉*/
    wuhan("wuhan"),
    /*恩施*/
    enshi("enshi");

    private String city;

    CityEnum(String city) {
        this.city = city;
    }

    public String getCity() {
        return city;
    }
}

DataSourceHolder

public class DataSourceHolder {
    //线程本地环境
    private static final ThreadLocal<String> contextHolders = new ThreadLocal<>();

    //设置数据源
    public static void setDataSource(String customerType) {
        contextHolders.set(customerType);
    }

    //获取数据源
    public static String getDataSource() {
        return contextHolders.get();
    }

    //清除数据源
    public static void clearDataSource() {
        contextHolders.remove();
    }
}

DynamicDataSourceInterceptor

import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author best
 */
@Component
public class DynamicDataSourceInterceptor implements HandlerInterceptor {

    //在业务处理器处理请求之前被调用
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        String city = request.getHeader("city");
        if (StringUtils.isBlank(city)) {
            city = CityEnum.wuhan.getCity();
        }
        DataSourceHolder.setDataSource(city);
        //RequestCityHolder.add(city);
        System.err.println(city + "处理开始...");
        return true;
    }

    //请求完成之后
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        String city = request.getHeader("city");
        if (StringUtils.isBlank(city)) {
            city = CityEnum.wuhan.getCity();
        }
        //清除数据源
        DataSourceHolder.clearDataSource();
        //清除ThreadLocal变量
        //RequestCityHolder.remove();
        System.err.println(city + "处理完成...");
    }
}

KafkaSendUtil

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.concurrent.ListenableFuture;

@Component
public class KafkaSendUtil {
    private static KafkaTemplate kafkaWhTemplate;

    private static KafkaTemplate kafkaEsTemplate;

    @Autowired
    public KafkaSendUtil(@Qualifier("kafkaWhTemplate") KafkaTemplate kafkaWhTemplate,
                         @Qualifier("kafkaEsTemplate") KafkaTemplate kafkaEsTemplate) {
        KafkaSendUtil.kafkaWhTemplate = kafkaWhTemplate;
        KafkaSendUtil.kafkaEsTemplate = kafkaEsTemplate;
    }

    public static ListenableFuture send(String topic, String type, String msg) {
        String city = DataSourceHolder.getDataSource();
        ListenableFuture listenableFuture = null;
        switch (CityEnum.valueOf(city)) {
            case wuhan:
                listenableFuture = kafkaWhTemplate.send(topic, type, msg);
                break;
            case enshi:
                listenableFuture = kafkaEsTemplate.send(topic, type, msg);
                break;
            default:
                break;
        }
        return listenableFuture;
    }
}

KafkaConsumer

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.stereotype.Component;

@Component
public class KafkaConsumer {

    private static final Logger LOGGER = LoggerFactory.getLogger(KafkaConsumer.class);

    // containerFactory 的值要与配置中 KafkaListenerContainerFactory 的 Bean 名相同
    @KafkaListener(topics = {"#{'${log-topic-name}'.split(',')}"}, containerFactory = "kafkaWhContainerFactory")
    public void listenerOne(ConsumerRecord<?, ?> record, Acknowledgment ack) {
        LOGGER.info(" kafka wuhan 消费者 接收到消息：{}", record.toString());
        ack.acknowledge();
    }

    @KafkaListener(topics = {"#{'${log-topic-name}'.split(',')}"}, containerFactory = "kafkaEsContainerFactory")
    public void listenerTwo(ConsumerRecord<?, ?> record, Acknowledgment ack) {
        LOGGER.info(" kafka enshi 消费者 接收到消息：{}", record.toString());
        ack.acknowledge();
    }
}