我是否可以指示ServicePartitionClient與服務結構中的特定節點對話?
public class HttpCommunicationClient : HttpClient, ICommunicationClient
{
public HttpCommunicationClient()
: base(new HttpClientHandler() { AllowAutoRedirect = false, UseCookies = false })
{
}
public HttpCommunicationClient(HttpMessageHandler handler)
: base(handler)
{
}
public HttpCommunicationClient(HttpMessageHandler handler, bool disposeHandler)
: base(handler, disposeHandler)
{
}
#region ICommunicationClient
string ICommunicationClient.ListenerName { get; set; }
ResolvedServiceEndpoint ICommunicationClient.Endpoint { get; set; }
ResolvedServicePartition ICommunicationClient.ResolvedServicePartition { get; set; }
#endregion ICommunicationClient
}
和
public class HttpCommunicationClientFactory : CommunicationClientFactoryBase<HttpCommunicationClient>
{
private readonly Func<HttpCommunicationClient> _innerDispatcherProvider;
public HttpCommunicationClientFactory(IServicePartitionResolver servicePartitionResolver = null, IEnumerable<IExceptionHandler> exceptionHandlers = null, string traceId = null)
: this(() => new HttpCommunicationClient(), servicePartitionResolver, exceptionHandlers, traceId)
{
}
public HttpCommunicationClientFactory(Func<HttpCommunicationClient> innerDispatcherProvider, IServicePartitionResolver servicePartitionResolver = null, IEnumerable<IExceptionHandler> exceptionHandlers = null, string traceId = null)
: base(servicePartitionResolver, exceptionHandlers, traceId)
{
if (innerDispatcherProvider == null)
{
throw new ArgumentNullException(nameof(innerDispatcherProvider));
}
_innerDispatcherProvider = innerDispatcherProvider;
}
protected override void AbortClient(HttpCommunicationClient dispatcher)
{
if (dispatcher != null)
{
dispatcher.Dispose();
}
}
protected override Task<HttpCommunicationClient> CreateClientAsync(string endpoint, CancellationToken cancellationToken)
{
var dispatcher = _innerDispatcherProvider.Invoke();
dispatcher.BaseAddress = new Uri(endpoint, UriKind.Absolute);
return Task.FromResult(dispatcher);
}
protected override bool ValidateClient(HttpCommunicationClient dispatcher)
{
return dispatcher != null && dispatcher.BaseAddress != null;
}
protected override bool ValidateClient(string endpoint, HttpCommunicationClient dispatcher)
{
return dispatcher != null && dispatcher.BaseAddress == new Uri(endpoint, UriKind.Absolute);
}
}
,並使用它像下面
var servicePartitionClient = new ServicePartitionClient<HttpCommunicationClient>(_httpClientFactory,
_options.ServiceUri,
_options.GetServicePartitionKey?.Invoke(context),
_options.TargetReplicaSelector,
_options.ListenerName,
_options.OperationRetrySettings);
using (var responseMessage = await servicePartitionClient.InvokeWithRetryAsync(httpClient => ExecuteServiceCallAsync(httpClient, context)))
{
await responseMessage.CopyToCurrentContext(context);
}
現在的問題是,如果我知道,我想用ServicePartitionClient的時間它連接到一個特定的節點,有沒有辦法做到這一點?
這種情況是,它的網關應用程序轉發請求到其他服務,我希望它的行爲像粘滯的會議。
有拐角的情況。 Signalr需要在握手過程中做3次必須碰到同一個實例的請求(是的,它不是無狀態的)。存在兩種解決方案,或者在負載平衡器上進行粘性會話,或者(對於我的情況,在編寫反向代理時,我可以使用cookie自己實現粘貼會話)。但從技術上講,是的,你是正確的:) –