在 goroutine 中扭曲 sarama-cluster 消耗动作,然后它无法消耗任何东西

Warp sarama-cluster consuming action in a goroutine, then it fails to consume anything

我正在使用 sarama-cluster 库在后端服务中创建一个 kafka 组消费者。来自 godoc 的示例代码有效:

for {
    if msg, ok := <-consumer.Messages(); ok {
        fmt.Fprintf(os.Stdout, "%s/%d/%d\t%s\t%s\n", msg.Topic, msg.Partition, msg.Offset, msg.Key, msg.Value)
        consumer.MarkOffset(msg, "") // mark message as processed
    }
}

因为是死循环,所以我把它放在一个goroutine中,避免阻塞其他活动,然后它就不能再消费任何消息了:

go func() {
    for msg := range consumer.Messages() {
        fmt.Fprintf(os.Stdout, "%s/%d/%d\t%s\t%s\n", msg.Topic, msg.Partition, msg.Offset, msg.Key, msg.Value)
        consumer.MarkOffset(msg, "") // mark message as processed
    }
}()

(服务是运行,所以这个goroutine并没有终止。它只是消费失败)

知道如何解决这个问题吗?

sarama-cluster 已经有一段时间没有维护了 with the following notice:

Please note that since https://github.com/Shopify/sarama/pull/1099 was merged and released (>= v1.19.0) this library is officially deprecated. The native implementation supports a variety of use cases that are not available through this library.

我建议您改用 github.com/Shopify/sarama。它具有 sarama-cluster 的所有功能,并且得到积极维护。

您可以遵循一个简单的消费者组示例from their repository