仅为路由公开.NET OData API的子集(对于排除的API返回404)

背景/背景:

我们有两条路线,带有不同的路线前缀:

1. 路由1前缀: /api
2. /api/partial

目前,我们对两个路由前缀使用相同的EdmModel。(参见第一个代码snippit,名为“What we current do”)。

我们只需要允许路由2的API功能的一个子集: /api/部分 . 我们想回来 404 当有人试图访问“部分”模型不可用的API时

例子:

1. 我们想回来 对于 /api/parial/products ,在哪里 products 未在此“部分”API路由中定义。
2. 我们想继续走这条路 /api/products

我们的尝试:

使用第二个EdmModel,它只包含完整EdmModel中可用实体的子集。(参见第二个代码snippit,名为“What we want to do:”。)

问题:

The path template 'products' on the action 'Export' in controller 'Products' is not a valid OData path template. Resource not found for the segment 'products'.)

我对正在发生的事情的最好猜测是,.NETOData库扫描所有OData控制器、函数和操作,并期望在EdmModel中为每个路由显式定义它们中的每一个。如果这是真的,那么这个解决方案(初始化一个新的EdmModel)很可能不起作用。。。

我们目前的工作:

private static IEdmModel GetFullEdmModel()
{
    var builder = new ODataConventionModelBuilder();

    var orders = builder.EntitySet<Order>("orders");
    orders.EntityType.HasKey(o => o.Id);
    orders.EntityType.Property(o => o.Id).Name = "id";

    var products = builder.EntitySet<Product>("products");
    products.EntityType.HasKey(p => p.Id);
    products.EntityType.Property(p => p.Id).Name = "id";
    products.EntityType.Action("Export").Returns<ExportResponse>();

    return builder.GetEdmModel();
}

protected override void Register(HttpConfiguration config)
{
    base.Register(config);

    var model = GetFullEdmModel();
    var conventions = ODataRoutingConventions.CreateDefaultWithAttributeRouting(config, model);

    // Map route 1 to {model}
    config.MapODataServiceRoute(
        routeName: "route1",
        routePrefix: "/api",
        model: model, 
        pathHandler: new CustomBIODataPathHandler(), 
        routingConventions: conventions);

    // Map route 2 to {model}
    config.MapODataServiceRoute(
        routeName: "route2",
        routePrefix: "/api/partial", // different route prefix
        model: model, // but it uses the same model
        pathHandler: new CustomBIODataPathHandler(), 
        routingConventions: conventions);
}

我们要做的是:

private static IEdmModel GetPartialEdmModel()
{
    var builder = new ODataConventionModelBuilder();

    // Include only one entity
    var orders = builder.EntitySet<Order>("orders");
    orders.EntityType.HasKey(o => o.Id);
    orders.EntityType.Property(o => o.Id).Name = "id";

    return builder.GetEdmModel();
}

protected override void Register(HttpConfiguration config)
{
    base.Register(config);

    // Map route 1 to {model}
    var model = GetFullEdmModel();
    var modelConventions = ODataRoutingConventions.CreateDefaultWithAttributeRouting(config, model);
    config.MapODataServiceRoute(
        routeName: "route1",
        routePrefix: "/api",
        model: model, // use standard full model
        pathHandler: new CustomBIODataPathHandler(), 
        routingConventions: conventions);

    // Map route 2 to a new partial model: {partialModel}    
    var partialModel = GetPartialEdmModel();
    var partialModelConventions = ODataRoutingConventions.CreateDefaultWithAttributeRouting(config, model);
    config.MapODataServiceRoute(
        routeName: "route2",
        routePrefix: "/api/partial", // different route prefix
        model: partialModel, // use a sparate, partial edm model ( a subset of the full edm model )
        pathHandler: new CustomBIODataPathHandler(), 
        routingConventions: conventions);
}