携带使用每个请求的上下文中的Htt prequestMessage.Properties [英] Carrying per-request context using the HttpRequestMessage.Properties
问题描述
在一个Web API应用程序中,我使用温莎城堡提供与PerWebRequest终身配置的服务,一切工作正常的IIS。
In a Web API application, I use Castle Windsor to supply services configured with PerWebRequest lifetime and everything works fine on IIS.
然而,当我使用的ASP.NET Web API自我主机(测试版)包我需要为了每个HTTP请求创建一个自定义一辈子范围的服务。
However, when I use the ASP.NET Web API Self Host (Beta) package I need to create a custom lifetime in order to scope those services per HTTP request.
我怎么能携带使用每请求上下文中的Htt prequestMessage.Properties?
How can I carry per-request context using the HttpRequestMessage.Properties?
推荐答案
我建议你使用一个消息处理程序设置一些你的对象变成了Htt prequestMessage.Property:
I'd suggest you using a message handler to set some your object into HttpRequestMessage.Property:
public class MyApplication : HttpApplication
{
protected void Application_Start()
{
RegisterHttpMessageHandlers(GlobalConfiguration.Configuration);
}
public void RegisterHttpMessageHandlers(HttpConfiguration config)
{
config.MessageHandlers.Add(new MyMessageHandler());
}
}
public static class MyHttpMessageHandlerExtensions
{
public static class HttpPropertyKey
{
public static readonly string MyProperty = "MyCompany_MyProperty";
}
public static MyContext GetContext(this HttpRequestMessage request)
{
return (MyContext)request.Properties[HttpPropertyKey.MyProperty ];
}
public static void SetContext(this HttpRequestMessage request, MyContext ctx)
{
request.Properties[HttpPropertyKey.MyProperty] = ctx;
}
}
public class MyMessageHandler : DelegatingHandler
{
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
request.SetContext(new MyContext(){/*some your data*/});
return base.SendAsync(request, cancellationToken);
}
}
public class MyController: ApiController
{
public object GetData()
{
MyContext ctx = this.Request.GetContext(); // the extenstion method is used
}
}
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