go - 使用 GVisor (Cloud Run) 问题的 Pubsub 拉取订阅

Question

我想使用 Go 获取 Google PubSub 订阅。它在本地运行良好，但当我将它部署在 Cloud Run 上时，无法提取任何消息。

这是我的代码片段

func (pubSubService *pubSubService) Received() (msgArray []*pubsub.Message, err error) {
    ctx := context.Background()
    cctx, cancel := context.WithCancel(ctx)
    msgArray = []*pubsub.Message{}

    var receivedMessage = make(chan *pubsub.Message)

    go func() {
        for {
            select {
            case msg := <-receivedMessage:
                msgArray = append(msgArray, msg)
            case <-time.After(pubSubService.waitTimeOutInMillis * time.Millisecond):
                cancel()
            }
        }
    }()

    err = pubSubService.client.Subscription(pubSubService.subscriptionName).Receive(cctx, func(ctx context.Context, msg *pubsub.Message) {
        receivedMessage <- msg
        msg.Ack()
    })
    if err != nil {
        return
    }

    return
}

这里是日志错误

D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x7,0x6,0x12,0xc00006f204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x5,0x6,0x12,0xc0003c1204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0xa,0x6,0x12,0xc0003bd204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0xc,0x6,0x12,0xc00037d204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x6,0x6,0x12,0xc0002d3204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x8,0x6,0x12,0xc00052b204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x9,0x6,0x12,0xc000391204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0xb,0x6,0x12,0xc00043b204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x6,0x6,0x12,0xc0003b3204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0xc,0x6,0x12,0xc0003d3204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x7,0x6,0x12,0xc000391204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0x5,0x6,0x12,0xc000309204,0x4,0x0) 
D  Container Sandbox Limitation: Unsupported syscall setsockopt(0xb,0x6,0x12,0xc0004d3204,0x4,0x0) 

Received call被Cloud Run的GVisor沙箱过滤

您知道为此问题设置的 workarround 或 ReceiveSetting 吗？提前致谢。

Answer 1

不，这是错误的。我发现了我的问题:我高估了 GCP 全局网络:取消轮询的超时设置为 200 毫秒。有了这个要求，我的应用程序就没有时间在取消之前恢复第一条消息。有 2000 毫秒的超时，它完美地工作!

Go routine可以用Cloud run，但是http请求回复后就不能存活了。