public void GetRouteData_IfHttpRouteGetRouteDataThrows_RoutesToExceptionHandler()
{
// Arrange
Exception expectedException = CreateException();
IHttpRoute route = CreateThrowingRoute(expectedException);
HttpWebRoute product = CreateProductUnderTest(route);
HttpRequestBase requestBase = CreateStubRequestBase("GET");
HttpContextBase contextBase = CreateStubContextBase(requestBase);
using (HttpRequestMessage request = CreateRequest())
{
contextBase.SetHttpRequestMessage(request);
// Act
RouteData routeData = product.GetRouteData(contextBase);
// Assert
Assert.NotNull(routeData);
Assert.Same(product, routeData.Route);
HttpRouteExceptionRouteHandler typedHandler =
Assert.IsType <HttpRouteExceptionRouteHandler>(routeData.RouteHandler);
ExceptionDispatchInfo exceptionInfo = typedHandler.ExceptionInfo;
Assert.NotNull(exceptionInfo); // Guard
Assert.Same(expectedException, exceptionInfo.SourceException);
}
}
public HostedHttpRoute(
string uriTemplate,
IDictionary <string, object> defaults,
IDictionary <string, object> constraints,
IDictionary <string, object> dataTokens,
HttpMessageHandler handler
)
{
RouteValueDictionary routeDefaults =
defaults != null ? new RouteValueDictionary(defaults) : null;
RouteValueDictionary routeConstraints =
constraints != null ? new RouteValueDictionary(constraints) : null;
RouteValueDictionary routeDataTokens =
dataTokens != null ? new RouteValueDictionary(dataTokens) : null;
OriginalRoute = new HttpWebRoute(
uriTemplate,
routeDefaults,
routeConstraints,
routeDataTokens,
HttpControllerRouteHandler.Instance,
this
);
Handler = handler;
}
public HostedHttpRoute(string uriTemplate, IDictionary<string, object> defaults, IDictionary<string, object> constraints, IDictionary<string, object> dataTokens, HttpMessageHandler handler)
{
RouteValueDictionary routeDefaults = defaults != null ? new RouteValueDictionary(defaults) : null;
RouteValueDictionary routeConstraints = constraints != null ? new RouteValueDictionary(constraints) : null;
RouteValueDictionary routeDataTokens = dataTokens != null ? new RouteValueDictionary(dataTokens) : null;
OriginalRoute = new HttpWebRoute(uriTemplate, routeDefaults, routeConstraints, routeDataTokens, HttpControllerRouteHandler.Instance, this);
Handler = handler;
}
/// <inheritdoc/>
protected override void ValidateConstraint(
string routeTemplate,
string name,
object constraint
)
{
// In WebHost the constraint might be IHttpRouteConstraint or IRouteConstraint (System.Web) or a string
HttpWebRoute.ValidateConstraint(routeTemplate, name, constraint);
}
public override IHttpRoute CreateRoute(string uriTemplate, IDictionary <string, object> defaults, IDictionary <string, object> constraints, IDictionary <string, object> dataTokens, IDictionary <string, object> parameters)
{
RouteValueDictionary routeDefaults = defaults != null ? new RouteValueDictionary(defaults) : null;
RouteValueDictionary routeConstraints = constraints != null ? new RouteValueDictionary(constraints) : null;
RouteValueDictionary routeDataTokens = dataTokens != null ? new RouteValueDictionary(dataTokens) : null;
HttpWebRoute route = new HttpWebRoute(uriTemplate, routeDefaults, routeConstraints, routeDataTokens, HttpControllerRouteHandler.Instance);
return(new HostedHttpRoute(route));
}
/// <inheritdoc/>
public override IHttpRoute this[int index]
{
get
{
HttpWebRoute route = _routeCollection[index] as HttpWebRoute;
if (route != null)
{
return(route.HttpRoute);
}
throw Error.ArgumentOutOfRange("index", index, SRResources.RouteCollectionOutOfRange);
}
}
/// <inheritdoc/>
public override IHttpRoute this[string name]
{
get
{
HttpWebRoute route = _routeCollection[name] as HttpWebRoute;
if (route != null)
{
return(route.HttpRoute);
}
throw Error.KeyNotFound();
}
}
/// <inheritdoc/>
public override bool TryGetValue(string name, out IHttpRoute route)
{
HttpWebRoute rt = _routeCollection[name] as HttpWebRoute;
if (rt != null)
{
route = rt.HttpRoute;
return(true);
}
route = null;
return(false);
}
/// <inheritdoc/>
public override bool Contains(IHttpRoute item)
{
foreach (RouteBase route in _routeCollection)
{
HttpWebRoute webRoute = route as HttpWebRoute;
if (webRoute != null && webRoute.HttpRoute == item)
{
return(true);
}
}
return(false);
}
public HostedHttpRouteData(RouteData routeData)
{
if (routeData == null)
{
throw Error.ArgumentNull("routeData");
}
OriginalRouteData = routeData;
HttpWebRoute route = routeData.Route as HttpWebRoute;
Route = route == null ? null : route.HttpRoute;
}
public HostedHttpRoute(string uriTemplate, IDictionary <string, object> defaults, IDictionary <string, object> constraints, IDictionary <string, object> dataTokens, HttpMessageHandler handler)
{
RouteValueDictionary routeDefaults = defaults != null ? new RouteValueDictionary(defaults) : null;
RouteValueDictionary routeConstraints = constraints != null ? new RouteValueDictionary(constraints) : null;
RouteValueDictionary routeDataTokens = dataTokens != null ? new RouteValueDictionary(dataTokens) : null;
/*
* 实现在HostedHttpRoute之中的核心路由功能基本上是通过这个Route对象完成的,
* 所以我们才说ASP.NET Web API的路由在Web Host寄宿模式下还是利用ASP.NET自身的路由系统实现的
*
* **/
OriginalRoute = new HttpWebRoute(uriTemplate, routeDefaults, routeConstraints, routeDataTokens, HttpControllerRouteHandler.Instance, this);
Handler = handler;
}
/// <summary>
/// Maps the specified route template and sets default route values, constraints, and namespaces.
/// </summary>
/// <param name="routes">A collection of routes for the application.</param>
/// <param name="name">The name of the route to map.</param>
/// <param name="routeTemplate">The route template for the route.</param>
/// <param name="defaults">An object that contains default route values.</param>
/// <param name="constraints">A set of expressions that specify values for <paramref name="routeTemplate"/>.</param>
/// <returns>A reference to the mapped route.</returns>
public static Route MapHttpRoute(this RouteCollection routes, string name, string routeTemplate, object defaults, object constraints)
{
if (routes == null)
{
throw Error.ArgumentNull("routes");
}
HttpWebRoute route = new HttpWebRoute(routeTemplate, HttpControllerRouteHandler.Instance)
{
Defaults = new RouteValueDictionary(defaults),
Constraints = new RouteValueDictionary(constraints),
DataTokens = new RouteValueDictionary()
};
routes.Add(name, route);
return route;
}
public override IHttpRoute CreateRoute(string uriTemplate, IDictionary<string, object> defaults, IDictionary<string, object> constraints, IDictionary<string, object> dataTokens, IDictionary<string, object> parameters)
{
RouteValueDictionary routeDefaults = defaults != null ? new RouteValueDictionary(defaults) : null;
RouteValueDictionary routeConstraints = constraints != null ? new RouteValueDictionary(constraints) : null;
RouteValueDictionary routeDataTokens = dataTokens != null ? new RouteValueDictionary(dataTokens) : null;
HttpWebRoute route = new HttpWebRoute(uriTemplate, routeDefaults, routeConstraints, routeDataTokens, HttpControllerRouteHandler.Instance);
return new HostedHttpRoute(route);
}
/// <summary>
/// Builds the contents for the route table based on the attributes
/// found on the method of a specific controller.
/// </summary>
/// <param name="routes"></param>
/// <param name="controllerType"></param>
/// <param name="method"></param>
private static void BuildControllerMethodRoutes(RouteCollection routes, Type controllerType, MethodInfo method)
{
// Grab the http route attributes from the current method.
HttpRouteAttribute[] attributes = (HttpRouteAttribute[])method.GetCustomAttributes(
typeof(HttpRouteAttribute), true);
if (attributes.Length != 0)
{
// Automatically grab the controller name and action name
// from the method and controller type.
string action = method.Name;
string controller = controllerType.Name;
// Translate the somewhat weird controller name into one the routing system
// understands, by removing the Controller part from the name.
if (controller.EndsWith("Controller", StringComparison.Ordinal))
{
controller = controller.Substring(0, controller.IndexOf("Controller"));
}
// Generate a route for every HTTP route attribute found on the method
foreach (var attribute in attributes)
{
var routeValueDictionary = new RouteValueDictionary();
routeValueDictionary.Add("controller", controller);
routeValueDictionary.Add("action", action);
ResolveOptionalRouteParameters(attribute.UriTemplate, method, routeValueDictionary);
// Create the route and attach the default route handler to it.
HttpWebRoute route = new HttpWebRoute(attribute.UriTemplate, routeValueDictionary,
new RouteValueDictionary(), new RouteValueDictionary(), HttpControllerRouteHandler.Instance);
routes.Add(Guid.NewGuid().ToString(), route);
}
}
}
/// <summary>
/// Builds the contents for the route table based on the attributes
/// found on a specific controller type.
/// </summary>
/// <param name="routes"></param>
/// <param name="controllerType"></param>
private static void BuildControllerRoutes(RouteCollection routes, Type controllerType)
{
HttpRouteAttribute[] attributes = (HttpRouteAttribute[])controllerType.GetCustomAttributes(
typeof(HttpRouteAttribute), true);
string controller = controllerType.Name;
// Translate the somewhat weird controller name into one the routing system
// understands, by removing the Controller part from the name.
if (controller.EndsWith("Controller", StringComparison.Ordinal))
{
controller = controller.Substring(0, controller.IndexOf("Controller"));
}
foreach (var attribute in attributes)
{
RouteValueDictionary routeValuesDictionary = new RouteValueDictionary();
routeValuesDictionary.Add("controller", controller);
// Create the route and attach the default route handler to it.
HttpWebRoute route = new HttpWebRoute(attribute.UriTemplate, routeValuesDictionary,
new RouteValueDictionary(), new RouteValueDictionary(), HttpControllerRouteHandler.Instance);
routes.Add(Guid.NewGuid().ToString(), route);
}
}
