asp.net-core – 使用操作约束时在MVC 6中使用Swagger的多个Api

我按照this ASP.NET 5 repository在MVC 6中使用推荐的API版本.我所做的唯一更改是从请求的自定义http头读取api版本的GetVersion方法：

//in VersionRangeValidator.cs
public static string GetVersion(HttpRequest request)
{
        //return request.Query["version"];
        if (!string.IsNullOrWhiteSpace(request.Headers[Constants.CommonRoutingDefinitions.ApiVersionSegmentName]))
        {
            return request.Headers[Constants.CommonRoutingDefinitions.ApiVersionSegmentName];
        }
        return Constants.CommonRoutingDefinitions.CurrentApiVersion;
 }

我有一个像这样的控制器：

[Route("api/[controller]")]
[Produces(Constants.MediaTypeNames.ApplicationJson)]
public class TagsController : Controller
{
    private readonly ITagService _tagService;

    public TagsController(ITagService tagService)
    {
        _tagService = tagService;
    }

    /// <summary>
    /// Version 1 by default
    /// </summary>
    /// <returns>All the tags</returns>
    [HttpGet]
    [Produces(typeof(IEnumerable<Tag>))]
    public IEnumerable<Tag> GetTags()
    {
        IEnumerable<Tag> tags = _tagService.GetTags();
        return tags;
    }

    /// <summary>
    /// Version 2
    /// </summary>
    /// <returns>All the tags V2</returns>
    [VersionGet("",versionRange: "[2]")]
    public IEnumerable<Tag> GetTagsV2()
    {
        IList<Tag> tags = new List<Tag>
        {
            new Tag { Id = 1,Links = Enumerable.Empty<Link>().ToList(),Name = "Tag version 2" }
        };
        return tags;
    }
}

使用自定义http标头进行版本控制即可

GET /api/tags

Content-Type: application/json

默认情况下将触发GetTags()操作,因为没有指定标头和

GET /api/tags

api-version: 2

Content-Type: application/json

将点击GetTagsV2()动作.

我已经按照this blog的步骤添加了Swagger UI和Swagger GEN库,所以在我的project.json中我有以下依赖项：

"Swashbuckle.SwaggerGen": "6.0.0-rc1-final","Swashbuckle.SwaggerUi": "6.0.0-rc1-final"

然后在我的Startup.cs中,我将Swagger添加到管道中

//inside Configure(IApplicationBuilder app)
 app.UseSwaggerGen();
 app.UseSwaggerUi();

我按如下方式配置Swagger：

private void ConfigureSwagger(IServiceCollection services)
{
        services.AddSwaggerGen();

        services.ConfigureSwaggerDocument(options =>
        {
            options.MultipleApiVersions(new Swashbuckle.SwaggerGen.Info[]
            {
                new Swashbuckle.SwaggerGen.Info
                {
                    Version = "v1",Title = "MyApp API",Description = "A RESTful API"
                },new Swashbuckle.SwaggerGen.Info
                {
                    Version = "v2",Title = "MyApp API (v2)",Description = "A RESTful API"
                }
            },(description,version) => {
                //description is an instance of ApiDescription and 
                //version is either "v1" or "v2" 
                //depending on the user choice in swagger UI page
                //TODO,how can I know whether the action belongs to v1 or to v2 to return true or false as appropriate?
            });
            options.OperationFilter(new Swashbuckle.SwaggerGen.XmlComments.ApplyXmlActionComments(Configuration["Documentation:SwaggerDocXml"]));
        });

        services.ConfigureSwaggerSchema(options =>
        {
            options.DescribeAllEnumsAsStrings = true;
            options.ModelFilter(new Swashbuckle.SwaggerGen.XmlComments.ApplyXmlTypeComments(Configuration["Documentation:SwaggerDocXml"]));
        });
}

问题是我不知道如何从描述(这是Microsoft.AspNet.Mvc.ApiExplorer.ApiDescription的一个实例)获得必要的信息,以了解是否必须在Swagger UI中显示给定的操作或不依赖在指定的版本上.
任何提示将不胜感激.这将有助于理解版本控制的this ASP.NET 5 repository实现是如何工作的,因为我仍然不能很好地理解它,并且无法找到关于动作约束如何工作的良好解释.

PS：This stackoverflow question帮我实现了MVC 6的版本控制,但我找不到很多关于Swagger如何与这种API版本化方式集成的方法.