增加 Google PubSub 的截止时间超时

Question

在使用 C# 库将消息发布到 Google PubSub 主题时，我们会间歇性地收到以下错误：

Exception: Grpc.Core.RpcException: Status(StatusCode=Unauthenticated, Detail="Deadline Exceeded")
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass0_0`2.<<WithRetry>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.PubSub.V1.Tasks.ForwardingAwaiter`1.GetResult()
   at Google.Cloud.PubSub.V1.Tasks.Extensions.<>c__DisplayClass6_0`1.<<ConfigureAwaitHideErrors>g__Inner0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.PubSub.V1.Tasks.ForwardingAwaiter`1.GetResult()
   at Google.Cloud.PubSub.V1.SimplePublisherImpl.<PublishAsync>d__26.MoveNext()
   at Google.Api.Gax.Grpc.ApiCallRetryExtensions.<>c__DisplayClass0_0`2.<<WithRetry>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---

Google 告诉我的是可配置的超时。我们正在像这样配置客户端库：

private SimplePublisher CreateSimplePublisher(int maxItems, int maxSizeBytes, TimeSpan maxDelay)
{
    var credential = Credential.IsCreateScopedRequired ?
        Credential.CreateScoped(PublisherClient.DefaultScopes) : Credential;
    var channel = new Channel(
        PublisherClient.DefaultEndpoint.Host,
        PublisherClient.DefaultEndpoint.Port,
        credential.ToChannelCredentials());
    var publisherClient = PublisherClient.Create(channel);
    return SimplePublisher.Create(
        new TopicName(Project, Topic),
        new[] { publisherClient },
        new SimplePublisher.Settings
        {
            BatchingSettings = new BatchingSettings
            (
                elementCountThreshold: maxItems,
                byteCountThreshold: maxSizeBytes,
                delayThreshold: maxDelay
            )
        });
}

有谁知道如何在此配置中配置截止时间阈值？这是使用 Google.Cloud.PubSub.V1 客户端库 nuget 包的版本 1.0.0-beta13。

Answer 1

这似乎是通过将PublisherSettings 对象传递给PublisherClient.Create 调用来控制的。

private SimplePublisher CreateSimplePublisher(int maxItems, int maxSizeBytes, TimeSpan maxDelay)
{
    var credential = Credential.IsCreateScopedRequired ?
        Credential.CreateScoped(PublisherClient.DefaultScopes) : Credential;
    var channel = new Channel(
        PublisherClient.DefaultEndpoint.Host,
        PublisherClient.DefaultEndpoint.Port,
        credential.ToChannelCredentials());
    //Add a specific timeout for the publish operation
    var publisherClientSettings = new PublisherSettings
    {
        PublishSettings = CallSettings.FromCallTiming(CallTiming.FromTimeout(TimeSpan.FromMinutes(60)))
    };
    var publisherClient = PublisherClient.Create(channel,publisherClientSettings);
    return SimplePublisher.Create(
        new TopicName(Project, Topic),
        new[] { publisherClient },
        new SimplePublisher.Settings
        {
            BatchingSettings = new BatchingSettings
            (
                elementCountThreshold: maxItems,
                byteCountThreshold: maxSizeBytes,
                delayThreshold: maxDelay
            )
        });
}