我正在使用 Kafka 和 Golang 进行测试
我在用着:
码头工人: https ://hub.docker.com/r/bitnami/kafka
萨拉马: https ://github.com/Shopify/sarama
例子很简单,就是一个连接Kafka的Consumer: https ://godoc.org/github.com/Shopify/sarama#example-Consumer
代码是这样的:
package main
import (
"log"
"os"
"os/signal"
"github.com/Shopify/sarama"
)
func main() {
consumer, err := sarama.NewConsumer([]string{"localhost:9092"}, nil)
if err != nil {
panic(err)
}
defer func() {
if err := consumer.Close(); err != nil {
log.Fatalln(err)
}
}()
partitionConsumer, err := consumer.ConsumePartition("my_topic", 0, sarama.OffsetNewest)
if err != nil {
panic(err)
}
defer func() {
if err := partitionConsumer.Close(); err != nil {
log.Fatalln(err)
}
}()
// Trap SIGINT to trigger a shutdown.
signals := make(chan os.Signal, 1)
signal.Notify(signals, os.Interrupt)
consumed := 0
ConsumerLoop:
for {
select {
case msg := <-partitionConsumer.Messages():
log.Printf("Consumed message offset %d\n", msg.Offset)
consumed++
case <-signals:
break ConsumerLoop
}
}
log.Printf("Consumed: %d\n", consumed)
}
但是在执行时: go run main.go
它向我显示以下错误:
panic: dial tcp: lookup fd6ee3862a45: no such host
goroutine 1 [running]:
main.main()
/Users/vn0sgkq/go/src/github.com/hectorgool/kafka1/main.go:25 +0x3f1
exit status 2
回购在这里: https ://github.com/hectorgool/kafka1/blob/master/main.go#L25
是的,我知道我缺少消息的生产者,但奇怪的是:consumer.ConsumePartition 不起作用