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package main
import (
"fmt"
"log"
"github.com/Shopify/sarama"
)
func main() {
// 创建一个Kafka配置实例
config := sarama.NewConfig()
// 设置消费者组
config.Consumer.Group.Session.Timeout = 10 * time.Second
config.Consumer.Group.Heartbeat.Interval = 3 * time.Second
// 创建一个Kafka消费者实例
consumer, err := sarama.NewConsumer([]string{"localhost:9092"}, config)
if err != nil {
log.Fatalf("Failed to create consumer: %s", err)
}
defer func() {
if err := consumer.Close(); err != nil {
log.Fatalf("Failed to close consumer: %s", err)
}
}()
// 创建一个Kafka生产者实例
producer, err := sarama.NewAsyncProducer([]string{"localhost:9092"}, config)
if err != nil {
log.Fatalf("Failed to create producer: %s", err)
}
defer func() {
if err := producer.Close(); err != nil {
log.Fatalf("Failed to close producer: %s", err)
}
}()
// 发送一条消息到Kafka
producer.Input() <- &sarama.ProducerMessage{
Topic: "my-topic",
Value: sarama.StringEncoder("Hello, Kafka!"),
}
// 从Kafka消费消息
partitionConsumer, err := consumer.ConsumePartition("my-topic", 0, sarama.OffsetOldest)
if err != nil {
log.Fatalf("Failed to create partition consumer: %s", err)
}
defer func() {
if err := partitionConsumer.Close(); err != nil {
log.Fatalf("Failed to close partition consumer: %s", err)
}
}()
for msg := range partitionConsumer.Messages() {
fmt.Printf("Received message: %s\n", string(msg.Value))
}
}
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