Service-Fabric 绑定到多个端点
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【中文标题】Service-Fabric 绑定到多个端点【英文标题】:Service-Fabric bind to multiple endpoints 【发布时间】:2017-06-23 16:32:35 【问题描述】:是否可以绑定服务结构应用以侦听多个端口?
基本上,我正在尝试建立一个面向公众的服务,它监听 http:80 和 https:443,并将任何 http 请求重定向到 https。
我创建了一个新的 ASP.net Core 服务,它单独运行良好。 IE。使用 SSL 443 或仅使用非 SSL 80,但是当我同时添加 ServiceInstanceListeners
时,它就失败了!
Service Fabric Explorer 多次超时后提示以下错误:
Unhealthy event: SourceId='System.RA', Property='ReplicaOpenStatus', HealthState='Warning', ConsiderWarningAsError=false.
Replica had multiple failures in API call: IStatelessServiceInstance.Open(); Error = System.Fabric.FabricElementAlreadyExistsException (-2146233088)
Unique Name must be specified for each listener when multiple communication listeners are used
at Microsoft.ServiceFabric.Services.Communication.ServiceEndpointCollection.AddEndpointCallerHoldsLock(String listenerName, String endpointAddress)
at Microsoft.ServiceFabric.Services.Communication.ServiceEndpointCollection.AddEndpoint(String listenerName, String endpointAddress)
at Microsoft.ServiceFabric.Services.Runtime.StatelessServiceInstanceAdapter.d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.ServiceFabric.Services.Runtime.StatelessServiceInstanceAdapter.d__0.MoveNext()
这很奇怪,因为两个听众的名字不同——看起来是这样。我应该在某个地方设置我错过的侦听器名称吗?
我为此使用了 Asp.net Core 模板。我的无状态服务代码如下:
internal sealed class Web : StatelessService
public Web(StatelessServiceContext context)
: base(context)
/// <summary>
/// Optional override to create listeners (like tcp, http) for this service instance.
/// </summary>
/// <returns>The collection of listeners.</returns>
protected override IEnumerable<ServiceInstanceListener> CreateServiceInstanceListeners()
return new ServiceInstanceListener[]
new ServiceInstanceListener(serviceContext =>
new WebListenerCommunicationListener(serviceContext, "ServiceEndpointHttps", url =>
ServiceEventSource.Current.ServiceMessage(serviceContext, $"Starting WebListener on url");
return new WebHostBuilder()
.UseWebListener()
.ConfigureServices(
services => services
.AddSingleton<StatelessServiceContext>(serviceContext))
.UseContentRoot(Directory.GetCurrentDirectory())
.UseStartup<Startup>()
.UseUrls(url)
.Build();
)),
new ServiceInstanceListener(serviceContext =>
new WebListenerCommunicationListener(serviceContext, "ServiceEndpointHttp", url =>
ServiceEventSource.Current.ServiceMessage(serviceContext, $"Starting WebListener on url");
return new WebHostBuilder()
.UseWebListener()
.ConfigureServices(
services => services
.AddSingleton<StatelessServiceContext>(serviceContext))
.UseContentRoot(Directory.GetCurrentDirectory())
.UseStartup<Startup>()
.UseUrls(url)
.Build();
))
;
【问题讨论】:
【参考方案1】:我需要在具有构造函数的ServiceInstanceListener
上设置名称
public ServiceInstanceListener(Func<StatelessServiceContext, ICommunicationListener> createCommunicationListener, string name = "");
我没有意识到它有额外的参数:)
【讨论】:
名称应与服务设置中的端点名称相匹配。对于具有单个端点类型的服务,可以将其留空,但一旦您有多个端点,您需要通过名称来识别它们。 节省了一天! @yoape 这是否意味着 servicemanifest.xml 中端点中的“名称”属性?【参考方案2】:您可以使用下面的代码自动执行所有这些操作,并在需要的地方记录所需的信息。
var currentEndpoint = "";
try
IList<ServiceInstanceListener> listeners = new List<ServiceInstanceListener>();
var endpoints = FabricRuntime.GetActivationContext().GetEndpoints();
foreach (var endpoint in endpoints)
currentEndpoint = endpoint.Name;
logger.LogInformation("Website trying to LISTEN : " + currentEndpoint);
var webListner = new ServiceInstanceListener(serviceContext =>
new WebListenerCommunicationListener(serviceContext, endpoint.Name, (url, listener) =>
url = endpoint.Protocol + "://+:" + endpoint.Port;
logger.LogInformation("Website Listening : " + currentEndpoint);
return new WebHostBuilder().UseWebListener() .UseContentRoot(Directory.GetCurrentDirectory())
.UseServiceFabricIntegration(listener, ServiceFabricIntegrationOptions.None)
.UseStartup<Startup>()
.UseUrls(url)
.Build();
), endpoint.Name.ToString());
listeners.Add(webListner);
return listeners;
catch (Exception ex)
logger.LogError("Exception occured while listening endpoint: " + currentEndpoint, ex);
throw;
【讨论】:
fwiw,看起来“url”实际上已经设置为endpoint.Protocol + "://+:" + endpoint.Port;
,所以我最终不必做那部分。感谢您的详细回答!以上是关于Service-Fabric 绑定到多个端点的主要内容,如果未能解决你的问题,请参考以下文章