我需要包装kcat一个 Go 函数来读取一系列主题消息,因此考虑使用exec.Command()如下:package mainimport ( "fmt" "os/exec")func main() { cmd := exec.Command("kcat", "-b kafka.kafka.svc.cluster.local:9092", "-t messages", "-o 11000", "-c 11333") fmt.Println("Command String:", cmd.String()) out, err := cmd.CombinedOutput() if err != nil { fmt.Println("Error Accessing kafka topic messages ", err.Error(), string(out)) return } fmt.Println("Result Length:", len(out)) fmt.Println("Result Content:", string(out))}但是,这仅返回输出的第一行kcat:/app/tools # ./fiveCommand String: /usr/bin/kcat -b kafka.kafka.svc.cluster.local:9092 -t messages -o 11000 -c 11333Result Length: 58Result Content: % Auto-selecting Producer mode (use -P or -C to override)(注意:我在 docker 容器中运行它,但我认为这没有什么不同)但是,当直接从 CLI 运行时,这可以正常工作:/app/tools # /app/tools # kcat -b kafka.kafka.svc.cluster.local:9092 -t messages -o 10 -c 15% Auto-selecting Consumer mode (use -P or -C to override)%4|1640957136.462|OFFSET|rdkafka#consumer-1| [thrd:main]: messages [1]: offset reset (at offset 10) to END: fetch failed due to requested offset not available on the broker: Broker: Offset out of range%4|1640957136.483|OFFSET|rdkafka#consumer-1| [thrd:main]: messages [2]: offset reset (at offset 10) to END: fetch failed due to requested offset not available on the broker: Broker: Offset out of range[{"Name":"newOrder", "ID":"9266","Time":"9266","Data":"new order", "Eventname":"newOrder"}][{"Name":"newOrder", "ID":"1547","Time":"1547","Data":"new order", "Eventname":"newOrder"}][{"Name":"newOrder", "ID":"9179","Time":"9179","Data":"new order", "Eventname":"newOrder"}][{"Name":"newOrder", "ID":"8740","Time":"8740","Data":"new order", "Eventname":"newOrder"}]在 Gokcat中中断的命令似乎有一些独特之处。exec.Command()问题:有没有其他方法可以在 Go 中达到相同的效果?这可能是我使用方式的问题吗exec.Command()理想情况下,我可以在这种情况下使用该kcat命令,因为我想避免在这种情况下使用 segmentioskafka-go库。
2 回答
慕无忌1623718
TA贡献1744条经验 获得超4个赞
正如输出所说,生产者模式正在自动选择
尝试使用带有单独参数的消费者模式
cmd := exec.Command("kcat", "-C", "-b", "kafka.kafka.svc.cluster.local:9092", "-t", "messages", "-o", "11000", "-c", "11333")
胡子哥哥
TA贡献1825条经验 获得超6个赞
执行命令:
cmd := exec.Command("kcat", "-b kafka.kafka.svc.cluster.local:9092", "-t messages", "-o 11000", "-c 11333")
与shell命令相同:
kcat "-b kafka.kafka.svc.cluster.local:9092" "-t messages" "-o 11000" "-c 11333"
你需要分开你的参数,就像默认情况下shell在每个空间上为你做的一样:
cmd := exec.Command("kcat", "-b", "kafka.kafka.svc.cluster.local:9092", "-t", "messages", "-o", "11000", "-c", "11333")
- 2 回答
- 0 关注
- 197 浏览
添加回答
举报
0/150
提交
取消