项目背景

在很多与第三方公司对接的时候，或者处在不同的网络环境下，比如在互联网和政务外网的分布部署服务的时候，我们需要对接多台kafka来达到我们的业务需求，那么当kafka存在多数据源的情况，就与单机的情况有所不同。

依赖

    implementation 'org.springframework.kafka:spring-kafka:2.8.2'

配置

单机的情况
如果是单机的kafka我们直接通过springboot自动配置的就可以使用，例如在yml里面直接引用

spring:
  kafka:
    producer:
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.apache.kafka.common.serialization.StringSerializer
    consumer:
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
    bootstrap-servers: server001.bbd:9092

在使用的时候直接注入,然后就可以使用里面的方法了

    @Resource
    private KafkaTemplate<String, String> kafkaTemplate;

在这里插入图片描述

多数据源情况下

本篇文章主要讲的是在多数据源下的使用，和单机的有所不同，我也看了网上的一些博客，但是当我去按照网上的配置的时候，总是会报错 kafakTemplate这个bean找不到,所以没办法只有按照springboot自动配置里面的来改
在这里插入图片描述

package com.ddb.zggz.config;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.kafka.DefaultKafkaConsumerFactoryCustomizer;
import org.springframework.boot.autoconfigure.kafka.DefaultKafkaProducerFactoryCustomizer;
import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
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.security.jaas.KafkaJaasLoginModuleInitializer;
import org.springframework.kafka.support.LoggingProducerListener;
import org.springframework.kafka.support.ProducerListener;
import org.springframework.kafka.support.converter.RecordMessageConverter;
import org.springframework.kafka.transaction.KafkaTransactionManager;

import java.io.IOException;

@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(KafkaTemplate.class)
@EnableConfigurationProperties(KafkaProperties.class)
public class KafkaConfiguration {

    private final KafkaProperties properties;

    private final KafkaSecondProperties kafkaSecondProperties;



    public KafkaConfiguration(KafkaProperties properties, KafkaSecondProperties kafkaSecondProperties) {
        this.properties = properties;
        this.kafkaSecondProperties = kafkaSecondProperties;
    }

    @Bean("kafkaTemplate")
    @Primary
    public KafkaTemplate<?, ?> kafkaTemplate(ProducerFactory<Object, Object> kafkaProducerFactory,
                                             ProducerListener<Object, Object> kafkaProducerListener,
                                             ObjectProvider<RecordMessageConverter> messageConverter) {
        KafkaTemplate<Object, Object> kafkaTemplate = new KafkaTemplate<>(kafkaProducerFactory);
        messageConverter.ifUnique(kafkaTemplate::setMessageConverter);
        kafkaTemplate.setProducerListener(kafkaProducerListener);
        kafkaTemplate.setDefaultTopic(this.properties.getTemplate().getDefaultTopic());
        return kafkaTemplate;
    }


    @Bean("kafkaSecondTemplate")
    public KafkaTemplate<?, ?> kafkaSecondTemplate(@Qualifier("kafkaSecondProducerFactory") ProducerFactory<Object, Object> kafkaProducerFactory,
                                                   @Qualifier("kafkaSecondProducerListener") ProducerListener<Object, Object> kafkaProducerListener,
                                                   ObjectProvider<RecordMessageConverter> messageConverter) {
        KafkaTemplate<Object, Object> kafkaTemplate = new KafkaTemplate<>(kafkaProducerFactory);
        messageConverter.ifUnique(kafkaTemplate::setMessageConverter);
        kafkaTemplate.setProducerListener(kafkaProducerListener);
        kafkaTemplate.setDefaultTopic(this.properties.getTemplate().getDefaultTopic());
        return kafkaTemplate;
    }


    @Bean("kafkaProducerListener")
    @Primary
    public ProducerListener<Object, Object> kafkaProducerListener() {
        return new LoggingProducerListener<>();
    }


    @Bean("kafkaSecondProducerListener")
    public ProducerListener<Object, Object> kafkaSecondProducerListener() {
        return new LoggingProducerListener<>();
    }

    @Bean("kafkaConsumerFactory")
    @Primary
    public ConsumerFactory<Object, Object> kafkaConsumerFactory(
            ObjectProvider<DefaultKafkaConsumerFactoryCustomizer> customizers) {
        DefaultKafkaConsumerFactory<Object, Object> factory = new DefaultKafkaConsumerFactory<>(
                this.properties.buildConsumerProperties());
        customizers.orderedStream().forEach((customizer) -> customizer.customize(factory));
        return factory;
    }

    @Bean("kafkaSecondConsumerFactory")
    public ConsumerFactory<Object, Object> kafkaSecondConsumerFactory(
            ObjectProvider<DefaultKafkaConsumerFactoryCustomizer> customizers) {
        DefaultKafkaConsumerFactory<Object, Object> factory = new DefaultKafkaConsumerFactory<>(
                this.kafkaSecondProperties.buildConsumerProperties());
        customizers.orderedStream().forEach((customizer) -> customizer.customize(factory));
        return factory;
    }


    @Bean("zwKafkaContainerFactory")
    KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<Integer, String>> zwKafkaContainerFactory(@Qualifier(value = "kafkaSecondConsumerFactory") ConsumerFactory<Object, Object> kafkaSecondConsumerFactory) {
        ConcurrentKafkaListenerContainerFactory<Integer, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(kafkaSecondConsumerFactory);
        factory.setConcurrency(3);
        factory.getContainerProperties().setPollTimeout(3000);
        return factory;
    }


    @Bean("kafkaProducerFactory")
    @Primary
    public ProducerFactory<Object, Object> kafkaProducerFactory(
            ObjectProvider<DefaultKafkaProducerFactoryCustomizer> customizers) {
        DefaultKafkaProducerFactory<Object, Object> factory = new DefaultKafkaProducerFactory<>(
                this.properties.buildProducerProperties());
        String transactionIdPrefix = this.properties.getProducer().getTransactionIdPrefix();
        if (transactionIdPrefix != null) {
            factory.setTransactionIdPrefix(transactionIdPrefix);
        }
        customizers.orderedStream().forEach((customizer) -> customizer.customize(factory));
        return factory;
    }

    @Bean("kafkaSecondProducerFactory")
    public ProducerFactory<Object, Object> kafkaSecondProducerFactory(
            ObjectProvider<DefaultKafkaProducerFactoryCustomizer> customizers) {
        DefaultKafkaProducerFactory<Object, Object> factory = new DefaultKafkaProducerFactory<>(
                this.kafkaSecondProperties.buildProducerProperties());
        String transactionIdPrefix = this.kafkaSecondProperties.getProducer().getTransactionIdPrefix();
        if (transactionIdPrefix != null) {
            factory.setTransactionIdPrefix(transactionIdPrefix);
        }
        customizers.orderedStream().forEach((customizer) -> customizer.customize(factory));
        return factory;
    }

    @Bean
    @ConditionalOnProperty(name = "spring.kafka.producer.transaction-id-prefix")
    public KafkaTransactionManager<?, ?> kafkaTransactionManager(ProducerFactory<?, ?> producerFactory) {
        return new KafkaTransactionManager<>(producerFactory);
    }

    @Bean
    @ConditionalOnProperty(name = "spring.kafka.jaas.enabled")
    public KafkaJaasLoginModuleInitializer kafkaJaasInitializer() throws IOException {
        KafkaJaasLoginModuleInitializer jaas = new KafkaJaasLoginModuleInitializer();
        KafkaProperties.Jaas jaasProperties = this.properties.getJaas();
        if (jaasProperties.getControlFlag() != null) {
            jaas.setControlFlag(jaasProperties.getControlFlag());
        }
        if (jaasProperties.getLoginModule() != null) {
            jaas.setLoginModule(jaasProperties.getLoginModule());
        }
        jaas.setOptions(jaasProperties.getOptions());
        return jaas;
    }

    @Bean("kafkaAdmin")
    @Primary
    public KafkaAdmin kafkaAdmin() {
        KafkaAdmin kafkaAdmin = new KafkaAdmin(this.properties.buildAdminProperties());
        kafkaAdmin.setFatalIfBrokerNotAvailable(this.properties.getAdmin().isFailFast());
        return kafkaAdmin;
    }

}

生产者


package com.ddb.zggz.event;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

import com.ddb.zggz.config.ApplicationConfiguration;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.support.SendResult;
import org.springframework.stereotype.Component;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;

import javax.annotation.Resource;

@Component
@Slf4j
public class KafkaPushEvent {


    @Resource
    private KafkaTemplate<String, String> kafkaSecondTemplate;

    @Resource
    private KafkaTemplate<String, String> kafkaTemplate;

    @Autowired
    private ApplicationConfiguration configuration;


    public void pushEvent(PushParam param) {
        ListenableFuture<SendResult<String, String>> sendResultListenableFuture = null;
        if ("zw".equals(configuration.getEnvironment())){
            sendResultListenableFuture = kafkaSecondTemplate.send(configuration.getPushTopic(), JSON.toJSONString(param));
        }
        if ("net".equals(configuration.getEnvironment())){
            sendResultListenableFuture = kafkaTemplate.send(configuration.getPushTopic(), JSON.toJSONString(param));
        }
        if (sendResultListenableFuture == null){
            throw new IllegalArgumentException("kakfa发送消息失败");
        }
        sendResultListenableFuture.addCallback(new ListenableFutureCallback<SendResult<String, String>>() {
            @Override
            public void onFailure(Throwable ex) {
                log.error("kafka发送的message报错，发送数据：{}", param);
            }

            @Override
            public void onSuccess(SendResult<String, String> result) {
                log.info("kafka发送的message成功，发送数据：{}", param);
            }
        });


    }


}

消费者

package com.ddb.zggz.event;

import com.alibaba.fastjson.JSONObject;

import com.ddb.zggz.config.ApplicationConfiguration;
import com.ddb.zggz.model.dto.ApprovalDTO;
import com.ddb.zggz.param.OffShelfParam;
import com.ddb.zggz.service.GzApprovalService;
import com.ddb.zggz.service.GzServiceService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.annotation.DltHandler;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.annotation.RetryableTopic;
import org.springframework.retry.annotation.Backoff;
import org.springframework.stereotype.Component;
import org.springframework.util.ObjectUtils;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;


@Component
@Slf4j
public class SendMessageListener {

    @Autowired
    private GzApprovalService gzApprovalService;

    @Autowired
    private GzServiceService gzServiceService;

    @KafkaListener(topics = "${application.config.push-topic}", groupId = "zggz",containerFactory = "zwKafkaContainerFactory")
    @RetryableTopic(include = {Exception.class},
            backoff = @Backoff(delay = 3000, multiplier = 1.5, maxDelay = 15000)
    )
    public void listen(ConsumerRecord<?, ?> consumerRecord) {
        String value = (String) consumerRecord.value();
        PushParam pushParam = JSONObject.parseObject(value, PushParam.class);

        //版本提审
        if ("version-approval".equals(pushParam.getEvent())) {
            ApprovalDTO approvalDTO = JSONObject.parseObject(JSONObject.toJSONString(pushParam.getData()), ApprovalDTO.class);
            gzApprovalService.approval(approvalDTO);
        }

        //服务下架
        if (pushParam.getEvent().equals("server-OffShelf-gzt")) {
            OffShelfParam offShelfParam = JSONObject.parseObject(JSONObject.toJSONString(pushParam.getData()), OffShelfParam.class);
            gzServiceService.offShelfV1(offShelfParam.getReason(), null, offShelfParam.getUserName(), "ZGGZ", offShelfParam.getH5Id(), offShelfParam.getAppId(), offShelfParam.getVersion());

        }

    }
    @DltHandler
    public void processMessage(String message) {

    }
}

消息体

package com.ddb.zggz.event;

import com.alibaba.fastjson.annotation.JSONField;
import com.ddb.zggz.model.GzH5VersionManage;
import com.ddb.zggz.model.GzService;
import com.ddb.zggz.model.dto.ApprovalDTO;
import com.ddb.zggz.param.OffShelfParam;
import com.ddb.zggz.param.PublishParam;
import com.ddb.zggz.param.ReviewAndRollback;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import lombok.Data;

import java.io.Serializable;
import java.time.LocalDateTime;

/**
 * @author bbd
 */
@Data
public class PushParam implements Serializable {

    /**
     * 发送的消息数据
     */
    private Object data;
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    @JsonSerialize(using = LocalDateTimeSerializer.class)
    @JsonDeserialize(using = LocalDateTimeDeserializer.class)
    @JSONField(format = "yyyy-MM-dd HH:mm:ss")
    private LocalDateTime createTime = LocalDateTime.now();

    /**
     * 事件名称，用于消费者处理相关业务
     */
    private String event;


    /**
     * 保存版本参数
     */
    public static PushParam toKafkaVersion(GzH5VersionManage gzH5VersionManage) {
        PushParam pushParam = new PushParam();
        pushParam.setData(gzH5VersionManage);
        pushParam.setEvent("save-version");
        return pushParam;
    }

    /**
     * 保存服务参数
     */
    public static PushParam toKafkaServer(GzService gzService) {
        PushParam pushParam = new PushParam();
        pushParam.setData(gzService);
        pushParam.setEvent("save-server");
        return pushParam;
    }