public void OnActionExecuted(ActionExecutedContext context)
{
Console.WriteLine("OnActionExecuted");
var attributes = ((ControllerActionDescriptor)context.ActionDescriptor).MethodInfo.CustomAttributes;
var mutationAttribute = attributes.FirstOrDefault(a => a.AttributeType.Name == nameof(MutateHttpBodyAttribute));
if (mutationAttribute == null)
{
return;
}
;
foreach (var mutationType in mutationAttribute.NamedArguments)
{
switch (mutationType.MemberName)
{
case nameof(MutateHttpBodyAttribute.IncomingType):
if (((Type)mutationType.TypedValue.Value).Name != typeof(TPreMutate).Name)
{
return;
}
break;
case nameof(MutateHttpBodyAttribute.OutgoingType):
if (((Type)mutationType.TypedValue.Value).Name != typeof(TPostMutate).Name)
{
return;
}
break;
default:
return;
}
}
var resultValue = context.Result as ObjectResult;
var valueAsJObject = JObject.FromObject(resultValue.Value);
foreach (var property in valueAsJObject)
{
var propertyName = property.Key;
if (PropertiesToMutate.Contains(propertyName))
{
var mutator = HttpBodyMutatorConfiguration <TPreMutate, TPostMutate> .GetResponseMutator(propertyName);
var outGoingVal = valueAsJObject[propertyName].ToObject <TPostMutate>();
var mutatedVal = mutator(outGoingVal);
valueAsJObject[propertyName] = JToken.FromObject(mutatedVal);
}
}
((ObjectResult)context.Result).Value = valueAsJObject;
}
public void OnResourceExecuting(ResourceExecutingContext context)
{
Console.WriteLine("OnResourceExecuting");
var attributes = ((ControllerActionDescriptor)context.ActionDescriptor).MethodInfo.CustomAttributes;
var mutationAttribute = attributes.FirstOrDefault(a => a.AttributeType.Name == nameof(MutateHttpBodyAttribute));
if (mutationAttribute == null)
{
return;
}
;
foreach (var mutationType in mutationAttribute.NamedArguments)
{
switch (mutationType.MemberName)
{
case nameof(MutateHttpBodyAttribute.IncomingType):
if (((Type)mutationType.TypedValue.Value).Name != typeof(TPreMutate).Name)
{
return;
}
break;
case nameof(MutateHttpBodyAttribute.OutgoingType):
if (((Type)mutationType.TypedValue.Value).Name != typeof(TPostMutate).Name)
{
return;
}
break;
default:
return;
}
}
var pathArgs = context.RouteData.Values;
foreach (var pathArg in pathArgs)
{
var propertyName = pathArg.Key;
if (PropertiesToMutate.Contains(propertyName))
{
var incomingVal = (TPreMutate)pathArg.Value;
var mutator = HttpBodyMutatorConfiguration <TPreMutate, TPostMutate> .GetRequestMutator(propertyName);
var mutatedVal = mutator(incomingVal);
context.RouteData.Values[propertyName] = mutatedVal;
}
}
var httpContext = context.HttpContext;
var originalBody = new StreamReader(httpContext.Request.Body).ReadToEnd();
var bodyAsJObject = JObject.Parse(originalBody);
foreach (var property in bodyAsJObject)
{
var propertyName = property.Key;
if (PropertiesToMutate.Contains(propertyName))
{
var mutator = HttpBodyMutatorConfiguration <TPreMutate, TPostMutate> .GetRequestMutator(propertyName);
var incomingVal = bodyAsJObject[propertyName].ToObject <TPreMutate>();
var mutatedVal = mutator(incomingVal);
bodyAsJObject[propertyName] = JToken.FromObject(mutatedVal);
}
}
var serializedBody = JsonConvert.SerializeObject(bodyAsJObject);
var newBodyContent = new StringContent(serializedBody, Encoding.UTF8, "application/json");
var newStreamBody = newBodyContent.ReadAsStreamAsync().GetAwaiter().GetResult();
httpContext.Request.Body = newStreamBody;
}
public HttpValuesMutationFilter()
{
PropertiesToMutate = HttpBodyMutatorConfiguration <TPreMutate, TPostMutate> .GetPropertiesToMutate();
}