Azure - WebAPI + OData - FilterQueryValidator - 角色保持循环

Question

我刚刚部署了包含 WebAPI 的 WCF Web 服务。一切正常，直到我将自己的过滤器查询验证器添加到我的项目中。然后角色不断回收并重新启动。这是一个非常奇怪的问题，我无法确定这是什么原因。感谢您的帮助。

using System;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.OData.Query;
using System.Web.Http.OData.Query.Validators;
using EMP.WebServices.api.Providers;
using Microsoft.Data.Edm.Library;
using Microsoft.Data.OData.Query.SemanticAst;

namespace EMP.WebServices.api.Validators
{
    public class EntityFilterByQueryValidator : FilterQueryValidator
    {
        public override void ValidateSingleValuePropertyAccessNode(SingleValuePropertyAccessNode propertyAccessNode, ODataValidationSettings settings)
        {
            var declaringType = propertyAccessNode.Property.DeclaringType;

            var edmEntityType = declaringType as EdmEntityType;

            var allowedProperties = TableStorageProvider.GetMetadataPropertyNames(edmEntityType.Name,
                                                                                  Constants.WebApi.V1).ToList();

            // Validate if we are accessing some sensitive property of WorkItem, such as Votes
            if (!allowedProperties.Contains(propertyAccessNode.Property.Name))
            {
                throw new HttpResponseException(new HttpResponseMessage
                {
                    Content = new StringContent(string.Format("{0} is an invalid filter property. {1}You can filter by these properties:{1}{2}.", propertyAccessNode.Property.Name, Environment.NewLine, string.Join(", " + Environment.NewLine, allowedProperties))),
                    ReasonPhrase = "Invalid Filter Property",
                    StatusCode = HttpStatusCode.BadRequest

                });
            }

            base.ValidateSingleValuePropertyAccessNode(propertyAccessNode, settings);
        }
    }
}

Answer 1

我从 ODataQueryableSample (http://www.asp.net/web-api/samples) 中看到，抛出 ODataException 似乎是首选技术。我建议你试试。

如果您认为这里存在错误，我建议您在 http://aspnetwebstack.codeplex.com/workitem/list/basic 报告新错误。