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34 lines
680 B
34 lines
680 B
2 years ago
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package main
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import (
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"context"
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"fmt"
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"log"
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kafka "github.com/segmentio/kafka-go"
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)
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func main() {
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// make a new reader that consumes from topic-A, partition 0, at offset 42
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r := kafka.NewReader(kafka.ReaderConfig{
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Brokers: []string{"localhost:9092", "localhost:9093", "localhost:9094"},
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Topic: "topic-A",
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Partition: 0,
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MinBytes: 10e3, // 10KB
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MaxBytes: 10e6, // 10MB
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})
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r.SetOffset(42)
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for {
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m, err := r.ReadMessage(context.Background())
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if err != nil {
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break
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}
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fmt.Printf("message at offset %d: %s = %s\n", m.Offset, string(m.Key), string(m.Value))
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}
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if err := r.Close(); err != nil {
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log.Fatal("failed to close reader:", err)
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}
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}
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