10

我们有一个 ASP.NET Web Api 应用程序，它使用 OAuth Bearer Tokens 进行身份验证，我们正在尝试实现请求/响应日志记录。

基本上它的工作原理如下：
1. 用户向“/authenticate”发送请求并接收身份验证令牌
2. 然后用户使用此身份验证令牌向公开的 API 方法发出请求

为了将请求记录到公开的 API 方法中，我们使用了一个DelegatingHandler非常好用的方法。

但是，对“/authenticate”的请求不会被DelegatingHandler实现捕获。

记录令牌请求是否需要不同的方法？

public abstract class MessageHandler : DelegatingHandler
{
    protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        var correlationId = Guid.NewGuid();

        var requestInfo = string.Format("{0} {1}", request.Method, request.RequestUri);

        var requestContent = await request.Content.ReadAsByteArrayAsync();

        var context = ((HttpContextBase)request.Properties["MS_HttpContext"]);

        await IncomingMessageAsync(correlationId, request.Method, request.RequestUri, request.Headers, requestContent, 
            context.Request.UserHostAddress, context.Request.IsAuthenticated, context.User.Identity.Name);

        var response = await base.SendAsync(request, cancellationToken);

        byte[] responseMessage;

        responseMessage = await response.Content.ReadAsByteArrayAsync();

        await OutgoingMessageAsync(correlationId, response.StatusCode, response.Headers, responseMessage);

        return response;
    }

    protected abstract Task IncomingMessageAsync(Guid correlationId, HttpMethod requestMethod, Uri requestUri, HttpRequestHeaders requestHeaders, byte[] messageContent, string ipAddress, bool isAuthenticated, string requestMadeByUserName);
    protected abstract Task OutgoingMessageAsync(Guid correlationId, HttpStatusCode statusCode, HttpResponseHeaders responseHeaders, byte[] messageContent);
}

使用 OAuth 代码编辑

[assembly: OwinStartup(typeof(MyApp.Infrastructure.IdentityConfig))]
namespace MyApp.Infrastructure
{
    public class IdentityConfig
    {
        public void Configuration(IAppBuilder app)
        {
            app.CreatePerOwinContext<ApplicationIdentityDbContext>(() => ApplicationIdentityDbContext.Create(ConfigurationDataProvider.MYDBCONNSTRING));
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);

            app.UseOAuthBearerTokens(new OAuthAuthorizationServerOptions
            {
                 Provider = new ApplicationAuthProvider(),
                 AllowInsecureHttp = true,
                 TokenEndpointPath = new PathString("/Authenticate")
            });
        }
    }
}
4

1 回答 1

5

您正在安装OWIN 中间件以在 WebAPI 中间件之前发布令牌。

 app.UseOAuthBearerTokens(new OAuthAuthorizationServerOptions
     {
         Provider = new ApplicationAuthProvider(),
         AllowInsecureHttp = true,
         TokenEndpointPath = new PathString("/Authenticate")
     });

您尝试用于记录请求的DelegatingHandler请求是 Web API 中间件的一部分，并且永远不会到达，因为发出令牌的中间件会处理请求并且不会在管道中进一步调用中间件。

不要使用DelegatingHandler，而是使用以下中间件并将其安装在令牌中间件之前。

public class RequestLoggerMiddleware
{
    private readonly Func<IDictionary<string, object>, Task> _next;
    private readonly ILogger _logger;

    public RequestLoggerMiddleware(
        Func<IDictionary<string, object>, Task> next, 
        ILogger logger)
    {
        _next = next;
        _logger = logger;
    }

    public Task Invoke(IDictionary<string, object> environment)
    {
        var context = new OwinContext(environment);

        _logger.Write($"{context.Request.Method} {context.Request.Uri.AbsoluteUri}");
        var result = _next.Invoke(environment);
        _logger.Write($"Status code: {context.Response.StatusCode}");

        return result;
    }
}

要安装中间件，app.Use(typeof (RequestLoggerMiddleware));只需app.UseOAuthBearerTokens在Startup.cs.

于 2016-06-15T21:50:54.627 回答