package com.winhc.config;

import com.google.common.collect.Maps;
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.boot.autoconfigure.condition.ConditionalOnProperty;
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.core.DefaultKafkaConsumerFactory;
import org.springframework.kafka.core.DefaultKafkaProducerFactory;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.core.ProducerFactory;
import org.springframework.kafka.listener.ContainerProperties;
import org.springframework.stereotype.Component;

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

/**
 * @author π
 * @Description:
 * @date 2020/12/24 10:06
 */
//@Component
@Configuration
@EnableKafka
//@ConditionalOnProperty(value = "spring.profiles.active", havingValue = "dev", matchIfMissing = true)
public class KafkaConfig {
    @Value("${spring.kafka.bootstrap-servers}")
    private String bootstrapServers;

    @Value("${spring.kafka.consumer.enable-auto-commit}")
    private Boolean autoCommit;

    @Value("${spring.kafka.producer.retries}")
    private Integer retries;

    @Value("${spring.kafka.producer.batch-size}")
    private Integer batchSize;

    @Value("${spring.kafka.producer.buffer-memory}")
    private Integer bufferMemory;

    /**
     * 生产者配置信息
     */
    @Bean
    public Map<String, Object> producerConfigs() {
        Map<String, Object> props = Maps.newHashMap();
        props.put(ProducerConfig.ACKS_CONFIG, "0");
        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.RETRIES_CONFIG, retries);
        props.put(ProducerConfig.BATCH_SIZE_CONFIG, batchSize);
        props.put(ProducerConfig.LINGER_MS_CONFIG, 1);
        props.put(ProducerConfig.BUFFER_MEMORY_CONFIG, bufferMemory);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
        props.put(ProducerConfig.TRANSACTION_TIMEOUT_CONFIG, "3000");
        return props;
    }

    /**
     * 生产者工厂
     */
    @Bean
    public ProducerFactory<String, String> producerFactory() {
        return new DefaultKafkaProducerFactory<>(producerConfigs());
    }

    /**
     * 生产者模板
     */
    @Bean
    public KafkaTemplate<String, String> kafkaTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }

    @Bean("containerFactory")
    public ConcurrentKafkaListenerContainerFactory<String, String> containerFactory() {
        ConcurrentKafkaListenerContainerFactory<String, String> container = new ConcurrentKafkaListenerContainerFactory<>();
        container.setConsumerFactory(new DefaultKafkaConsumerFactory<>(consumerProps()));
        // 设置并发量，小于或等于Topic的分区数
        container.setConcurrency(1);
        // 拉取超时时间
        //container.getContainerProperties().setPollTimeout(1500);
        // 设置为批量监听
        container.setBatchListener(true);
        // 设置提交偏移量的方式
        //container.getContainerProperties().setAckMode(ContainerProperties.AckMode.MANUAL_IMMEDIATE);
        return container;
    }

    private Map<String, Object> consumerProps() {
        Map<String, Object> props = new HashMap<>(8);
        // kafka服务地址
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        // 设置是否自动提交
        props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, autoCommit);
        // 一次拉取消息数量
        props.put(ConsumerConfig.MAX_POLL_RECORDS_CONFIG, 5000);
        props.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, 120000);
        props.put(ConsumerConfig.REQUEST_TIMEOUT_MS_CONFIG, 180000);
        // 最大处理时间
        props.put(ConsumerConfig.MAX_POLL_INTERVAL_MS_CONFIG, 120000);
        // 序列化
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        return props;
    }

}