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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Web.Http.Controllers;
using System.Web.Http.Routing;
namespace System.Web.Http
{
public class ApiControllerHelper
{
public static HttpActionDescriptor SelectAction(HttpControllerContext controllerContext)
{
ApiControllerActionSelector selector = new ApiControllerActionSelector();
HttpActionDescriptor descriptor = selector.SelectAction(controllerContext);
return descriptor;
}
public static HttpControllerContext CreateControllerContext(string httpMethod, string requestUrl, string routeUrl, object routeDefault = null)
{
string baseAddress = "http://localhost/";
HttpConfiguration config = new HttpConfiguration();
HttpRoute route = routeDefault != null ? new HttpRoute(routeUrl, new HttpRouteValueDictionary(routeDefault)) : new HttpRoute(routeUrl);
config.Routes.Add("test", route);
HttpRequestMessage request = new HttpRequestMessage(HttpMethodHelper.GetHttpMethod(httpMethod), baseAddress + requestUrl);
IHttpRouteData routeData = config.Routes.GetRouteData(request);
if (routeData == null)
{
throw new InvalidOperationException("Could not dispatch to controller based on the route.");
}
RemoveOptionalRoutingParameters(routeData.Values);
HttpControllerContext controllerContext = ContextUtil.CreateControllerContext(config, routeData, request);
return controllerContext;
}
private static void RemoveOptionalRoutingParameters(IDictionary<string, object> routeValueDictionary)
{
// Get all keys for which the corresponding value is 'Optional'.
// ToArray() necessary so that we don't manipulate the dictionary while enumerating.
string[] matchingKeys = (from entry in routeValueDictionary
where entry.Value == RouteParameter.Optional
select entry.Key).ToArray();
foreach (string key in matchingKeys)
{
routeValueDictionary.Remove(key);
}
}
}
}
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