static VersionHandlingHttpControllerSelector()
{
Assembly currentAssembly = typeof(VersionHandlingHttpControllerSelector).Assembly;
string currentAssemblyLocation = currentAssembly.Location;
string currentAssemblyName = currentAssembly.GetName().Name;
string controllersXMLPath = ControllersXMLPath.IsNotNullOrEmpty() ? ControllersXMLPath : Path.Combine(currentAssemblyLocation, "ControllerDispatchment", "ControllerEntityVersionsAndNamesMapping", "ControllerEntityVersionsAndNamesMapping.xml");
XDocument xDocForControllersXML = XDocument.Load(controllersXMLPath);
_controllersXML = XMLUtility.DeSerialize <ControllersXML>(xDocForControllersXML.ToString());
string controllersXSDPath = ControllersXSDPath.IsNotNullOrEmpty() ? ControllersXSDPath : ("RestfulWebAPI.ControllerDispatchment.ControllerEntityVersionsAndNamesMapping.ControllerEntityVersionsAndNamesMapping.xsd");
string controllersXSDAssemblyName = ControllersXSDAssemblyName.IsNotNullOrEmpty() ? ControllersXSDAssemblyName : currentAssemblyName;
string xmlValidationErrors = XSDUtility.Validate(controllersXSDAssemblyName, ControllersXSDPath, xDocForControllersXML.ToString());
if (xmlValidationErrors.IsNotNullOrEmpty())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.InternalServerError, xmlValidationErrors);
}
string entitiesXMLPath = EntitiesXMLPath.IsNotNullOrEmpty() ? EntitiesXMLPath : Path.Combine(currentAssemblyLocation, "ControllerDispatchment", "ControllerEntityVersionsAndNamesMapping", "EntitiesAndIDTypesMapping.xml");
XDocument xDocForEntitiesXML = XDocument.Load(entitiesXMLPath);
_entitiesXML = XMLUtility.DeSerialize <EntitiesXML>(xDocForEntitiesXML.ToString());
string entitiesXSDPath = EntitiesXSDPath.IsNotNullOrEmpty() ? EntitiesXSDPath : ("RestfulWebAPI.ControllerDispatchment.ControllerEntityVersionsAndNamesMapping.EntitiesAndIDTypesMapping.xsd");
string entitiesXSDAssemblyName = EntitiesXSDAssemblyName.IsNotNullOrEmpty() ? EntitiesXSDAssemblyName : currentAssemblyName;
xmlValidationErrors = XSDUtility.Validate(entitiesXSDAssemblyName, entitiesXSDPath, xDocForEntitiesXML.ToString());
if (xmlValidationErrors.IsNotNullOrEmpty())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.InternalServerError, xmlValidationErrors);
}
//Register this cache in Unity DI Container with Singleton lifetime
_cache = Container.Instance.Resolve <ICache <string, HttpControllerDescriptor> >();
}
public override HttpControllerDescriptor SelectController(HttpRequestMessage request)
{
if (_controllerNameInRequestObject.IsNullOrEmpty())
{
_controllerNameInRequestObject = GetControllerNameFromRequest(request);
if (_controllerNameInRequestObject.IsNullOrEmpty())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.NotFound, "Controller not found", request);
}
}
if (_controllerVersionInRequestObject == 0)
{
_controllerVersionInRequestObject = GetControllerVersion(request);
}
string cacheKey = _controllerNameInRequestObject + ":" + _controllerVersionInRequestObject + ":" + request.Method.ToString();
if (_cache.Contains(cacheKey))
{
return(_cache.Get(cacheKey));
}
string controllerName = GetControllerName(request);
if (controllerName.IsNullOrEmpty())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.NotFound, "Controller not found", request);
}
string currentAssemblyName = this.GetType().Assembly.GetName().Name;
Type controllerType = null;
try
{
controllerType = GetControllerTypeForControllerNotPresentInControllersXMLFile(request, controllerName);
if (controllerType.IsNull())
{
controllerType = MetaDataUtility.GetType(currentAssemblyName, controllerName);
}
}
catch
{
controllerType = MetaDataUtility.GetType(currentAssemblyName, controllerName);
}
if (controllerType.IsNull())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.NotFound, controllerName + " not found", request);
}
HttpControllerDescriptor httpControllerDescriptor = new HttpControllerDescriptor();
httpControllerDescriptor.Configuration = _configuration;
httpControllerDescriptor.ControllerType = controllerType;
httpControllerDescriptor.ControllerName = controllerType.Name;
_cache.Add(cacheKey, httpControllerDescriptor);
return(httpControllerDescriptor);
}
public override string GetControllerName(HttpRequestMessage request)
{
ContractUtility.Requires <ArgumentNullException>(request.IsNotNull(), "request cannot be null");
if (_controllerNameInRequestObject.IsNullOrEmpty())
{
_controllerNameInRequestObject = GetControllerNameFromRequest(request);
if (_controllerNameInRequestObject.IsNullOrEmpty())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.NotFound, "Controller not found", request);
}
}
if (_controllerVersionInRequestObject == 0)
{
_controllerVersionInRequestObject = GetControllerVersion(request);
}
IEnumerable <ControllerXML> controllerXMLsInControllersXML = _controllersXML.ControllerXMLs.Where(x => x.EntityName.Equals(_controllerNameInRequestObject, StringComparison.InvariantCultureIgnoreCase));
if (controllerXMLsInControllersXML.IsNullOrEmpty())
{
return(string.Empty);
}
controllerXMLsInControllersXML.ToList().ForEach(x =>
{
x.Version = x.Version.Replace("v", string.Empty).Replace("V", string.Empty);
}
);
ControllerXML controllerXMLForSuppliedVersionNumber = null;
if (_controllerVersionInRequestObject == 0)
{
double maxVersionNumber = controllerXMLsInControllersXML.Max(x => Convert.ToDouble(x.Version.IsNotNullOrEmpty() ? x.Version : "0"));
controllerXMLForSuppliedVersionNumber = _controllersXML.ControllerXMLs.SingleOrDefault(x => x.EntityName == _controllerNameInRequestObject && (x.Version.IsNotNullOrEmpty() ? x.Version : "0") == maxVersionNumber.ToString());
}
else
{
controllerXMLForSuppliedVersionNumber = _controllersXML.ControllerXMLs.SingleOrDefault(x => x.EntityName == _controllerNameInRequestObject && x.Version == _controllerVersionInRequestObject.ToString());
}
if (controllerXMLForSuppliedVersionNumber.IsNull())
{
return(string.Empty);
}
return(controllerXMLForSuppliedVersionNumber.ControllerName.IsNotNullOrEmpty() ? controllerXMLForSuppliedVersionNumber.ControllerName : _controllerNameInRequestObject);
}
public IHttpController Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
{
IHttpController httpController = null;
string controllerName = controllerDescriptor.ControllerName.IsNotNullOrEmpty() ? controllerDescriptor.ControllerName : controllerDescriptor.ControllerType.Name;
try
{
httpController = Container.Instance.Resolve(controllerDescriptor.ControllerType) as IHttpController;
if (httpController.IsNull())
{
httpController = Container.Instance.Resolve(controllerDescriptor.ControllerType, controllerDescriptor.ControllerName) as IHttpController;
}
}
catch
{
httpController = Container.Instance.Resolve(controllerDescriptor.ControllerType, controllerDescriptor.ControllerName) as IHttpController;
}
if (httpController.IsNull())
{
HttpResponseUtility.ThrowHttpResponseError(HttpStatusCode.InternalServerError, controllerName + " not registered in Unity DI container", request);
}
return(httpController);
}
