Eventstore：如何正确设置持久订阅客户端？

Question

我正在使用 EventStoreDB V20，我正在尝试在我的本地开发机器上设置持久订阅。在仪表板上，我可以看到列出的持久订阅，但处理程序从未被调用。

我正在使用这些 nugets： https://www.nuget.org/packages/EventStore.Client.Grpc/ https://www.nuget.org/packages/EventStore.Client.Grpc.PersistentSubscriptions/20.10.0

我运行事件存储在 docker:

docker run --name esdb-node -it -p 2113:2113 -p 1113:1113 -e EVENTSTORE_DEV=true eventstore/eventstore:latest --insecure --run-projections=All --enable-atom-pub-over-http

为了追加事件，我这样做：

await eventStoreClient.AppendToStreamAsync(
    aggregate.Id.ToString(),
    aggregate.Version == 0 ? StreamRevision.None : StreamRevision.FromInt64(aggregate.Version),                            events);

创建并订阅持久订阅：

var client = new EventStorePersistentSubscriptionsClient(new EventStoreClientSettings {

    CreateHttpMessageHandler = () =>
        new HttpClientHandler
        {
            ServerCertificateCustomValidationCallback =
                (message, certificate2, x509Chain, sslPolicyErrors) => true // ignore https
        },
        ConnectivitySettings = new EventStoreClientConnectivitySettings
        {
            Address = new Uri("http://127.0.0.1:2113?Tls=false&TlsVerifyCert=false")
        }});

        await client.CreateAsync("all", "TestGroup", new PersistentSubscriptionSettings(startFrom: StreamPosition.End));

        await SubscribeAsync(client);

        Console.ReadLine();
    }

    private static Task<PersistentSubscription> SubscribeAsync(EventStorePersistentSubscriptionsClient client)
    {
        return client.SubscribeAsync("all", "TestGroup",
            (subscription, evt, retryCount, cancelToken) =>
            {
                Console.WriteLine("Received: " + Encoding.UTF8.GetString(evt.Event.Data.Span));

                return Task.CompletedTask;
            });
    }

Console.WriteLine 永远不会被调用。我需要更改什么？

Answer 1

一切似乎都设置正确，但我怀疑您是否有名称为 all 的流。如果您尝试为 $all 流创建持久订阅，这是不可能的。您只能在 $all 流上进行追赶订阅。

Eventstore：如何正确设置持久订阅客户端？

Eventstore: How do I setup an persistent subscriptions client correctly?

c#

event-sourcing

eventstoredb