private static void ReplaceAttributeRouteTokens(
ControllerActionDescriptor actionDescriptor,
IList <string> routeTemplateErrors)
{
try
{
actionDescriptor.AttributeRouteInfo.Template = AttributeRouteModel.ReplaceTokens(
actionDescriptor.AttributeRouteInfo.Template,
actionDescriptor.RouteValues);
if (actionDescriptor.AttributeRouteInfo.Name != null)
{
actionDescriptor.AttributeRouteInfo.Name = AttributeRouteModel.ReplaceTokens(
actionDescriptor.AttributeRouteInfo.Name,
actionDescriptor.RouteValues);
}
}
catch (InvalidOperationException ex)
{
// Routing will throw an InvalidOperationException here if we can't parse/replace tokens
// in the template.
var message = Resources.FormatAttributeRoute_IndividualErrorMessage(
actionDescriptor.DisplayName,
Environment.NewLine,
ex.Message);
routeTemplateErrors.Add(message);
}
}
private static List <RouteInfo> GetRouteInfos(IReadOnlyList <ActionDescriptor> actions)
{
var routeInfos = new List <RouteInfo>();
var errors = new List <RouteInfo>();
// This keeps a cache of 'Template' objects. It's a fairly common case that multiple actions
// will use the same route template string; thus, the `Template` object can be shared.
//
// For a relatively simple route template, the `Template` object will hold about 500 bytes
// of memory, so sharing is worthwhile.
var templateCache = new Dictionary <string, RouteTemplate>(StringComparer.OrdinalIgnoreCase);
var attributeRoutedActions = actions.Where(a => a.AttributeRouteInfo?.Template != null);
foreach (var action in attributeRoutedActions)
{
var routeInfo = GetRouteInfo(templateCache, action);
if (routeInfo.ErrorMessage == null)
{
routeInfos.Add(routeInfo);
}
else
{
errors.Add(routeInfo);
}
}
if (errors.Count > 0)
{
var allErrors = string.Join(
Environment.NewLine + Environment.NewLine,
errors.Select(
e => Resources.FormatAttributeRoute_IndividualErrorMessage(
e.ActionDescriptor.DisplayName,
Environment.NewLine,
e.ErrorMessage)));
var message = Resources.FormatAttributeRoute_AggregateErrorMessage(Environment.NewLine, allErrors);
throw new RouteCreationException(message);
}
return(routeInfos);
}