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  • [GO]kafka的生产者和消费者

    生产者:

    package main
    
    import (
        "github.com/Shopify/sarama"
        "fmt"
        "time"
    )
    
    func main() {
        config := sarama.NewConfig()
        config.Producer.RequiredAcks = sarama.WaitForAll
        config.Producer.Partitioner = sarama.NewRandomPartitioner
        config.Producer.Return.Successes = true
    
        client, err := sarama.NewSyncProducer([]string{"localhost:9092"}, config)
        if err != nil {
            fmt.Println("producer close, err:", err)
            return
        }
    
        defer client.Close()
    
        for true {
            msg := &sarama.ProducerMessage{}
            msg.Topic = "nginx_log"
            msg.Value = sarama.StringEncoder("this is s good test")
            pid, offset, err := client.SendMessage(msg)
            if err != nil {
                fmt.Println("send msg failed err :", err)
                return
            }
            fmt.Printf("pid:%v offset:%v
    ", pid, offset)
            time.Sleep(10*time.Second)
        }
    }

    消费者

    package main
    
    import (
        "sync"
        "github.com/Shopify/sarama"
        "strings"
        "fmt"
        "time"
    )
    
    var wg sync.WaitGroup //用来等待一组goroutine结束 
    
    func main() {
        consumer, err := sarama.NewConsumer(strings.Split("localhost:9092", ","), nil)
        if err != nil {
            fmt.Println("failed to start consumer:%s", err)
            return
        }
        partitionList, err := consumer.Partitions("nginx_long")
        if err != nil {
            fmt.Println("failed to get the list of partitions:", err)
        }
        fmt.Println(partitionList)
        for partition := range partitionList{
            pc, err := consumer.ConsumePartition("nginx_log", int32(partition),sarama.OffsetNewest)
            if err != nil {
                fmt.Println("failed to start consumer for partition %d:%s
    ", partition, err)
                return
            }
            defer pc.AsyncClose()
            go func(sarama.PartitionConsumer) { //kafka里有几个分区就起几个goroutine
                for msg := range pc.Messages(){//返回一个channel
                    fmt.Printf("Partition:%d, Offset:%d, key:%s, value:%s", msg.Partition, msg.Offset, string(msg.Key), string(msg.Value))
                    fmt.Println()
                }
            }(pc)
        }
    
        time.Sleep(time.Hour)
        consumer.Close()
    }

     生产者执行结果界面

    消费者执行结果界面

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  • 原文地址:https://www.cnblogs.com/baylorqu/p/9999672.html
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