/// <summary>Processes the HTTP request body binding.</summary>
/// <param name="context">The context.</param>
/// <param name="contextResolver">The API request context resolver.</param>
/// <param name="formatterFactory">The formatter factory.</param>
/// <returns></returns>
internal static async Task <bool> ProcessHttpRequestBodyBinding(this ApiRequestContext context, IApiRequestContextResolver contextResolver, IDeepSleepMediaSerializerFactory formatterFactory)
{
if (!context.RequestAborted.IsCancellationRequested)
{
if (context.Request.Method?.In(StringComparison.InvariantCultureIgnoreCase, "post", "patch", "put") ?? false)
{
if (!context.Request.ContentLength.HasValue)
{
if (context.Configuration?.RequestValidation?.RequireContentLengthOnRequestBodyRequests ?? true)
{
context.Response.StatusCode = 411;
return(false);
}
}
if (context.Request.ContentLength > 0 && string.IsNullOrWhiteSpace(context.Request.ContentType))
{
context.Response.StatusCode = 415;
return(false);
}
if (context.Configuration?.RequestValidation?.MaxRequestLength > 0 && context.Request.ContentLength > 0)
{
if (context.Request.ContentLength > context.Configuration.RequestValidation.MaxRequestLength)
{
context.Response.StatusCode = 413;
return(false);
}
}
if (context.Request.ContentLength > 0 && context.Routing?.Route?.Location?.BodyParameterType == null)
{
if (!(context.Configuration?.RequestValidation?.AllowRequestBodyWhenNoModelDefined ?? false))
{
context.Response.StatusCode = 413;
return(false);
}
}
if (context.Routing.Route.Location.BodyParameterType != null && context.Request.ContentLength > 0 && !string.IsNullOrWhiteSpace(context.Request.ContentType))
{
IDeepSleepMediaSerializer formatter = null;
var formatterTypes = context.Configuration?.ReadWriteConfiguration?.ReadableMediaTypes
?? formatterFactory?.GetReadableTypes(objType: context.Routing.Route.Location.BodyParameterType, overridingFormatters: null)
?? new List <string>();
if (formatterFactory != null)
{
formatter = await formatterFactory.GetContentTypeFormatter(
contentTypeHeader : context.Request.ContentType,
objType : context.Routing.Route.Location.BodyParameterType,
formatterType : out var _,
readableMediaTypes : context.Configuration?.ReadWriteConfiguration?.ReadableMediaTypes).ConfigureAwait(false);
}
if (context.Configuration.ReadWriteConfiguration?.ReaderResolver != null)
{
var overrides = await context.Configuration.ReadWriteConfiguration.ReaderResolver(context?.RequestServices).ConfigureAwait(false);
if (overrides?.Formatters != null)
{
formatter = await formatterFactory.GetContentTypeFormatter(
contentTypeHeader : context.Request.ContentType,
objType : context.Routing.Route.Location.BodyParameterType,
formatterType : out var _,
readableFormatters : overrides.Formatters,
readableMediaTypes : context.Configuration?.ReadWriteConfiguration?.ReadableMediaTypes).ConfigureAwait(false);
formatterTypes = overrides.Formatters
.Where(f => f != null)
.Where(f => f.SupportsRead)
.Where(f => f.ReadableMediaTypes != null)
.Where(f => f.CanHandleType(context.Routing.Route.Location.BodyParameterType))
.SelectMany(f => f.ReadableMediaTypes)
.Distinct()
.ToList();
formatterTypes = context.Configuration?.ReadWriteConfiguration?.ReadableMediaTypes ?? formatterTypes ?? new List <string>();
}
else
{
formatterTypes = context.Configuration?.ReadWriteConfiguration?.ReadableMediaTypes ?? new List <string>();
}
}
if (formatter == null)
{
context.Response.StatusCode = 415;
context.Response.AddHeader(
name: "X-Allow-Content-Types",
value: string.Join(", ", formatterTypes),
append: false,
allowMultiple: false);
return(false);
}
Encoding contextTypeEncoding = null;
if (context.Request.ContentType != null as string)
{
if (!string.IsNullOrWhiteSpace(context.Request.ContentType.Charset))
{
try
{
contextTypeEncoding = Encoding.GetEncoding(context.Request.ContentType.Charset);
}
catch { }
}
}
try
{
context.Request.InvocationContext.BodyModel = await formatter.ReadType(
stream : context.Request.Body,
objType : context.Routing.Route.Location.BodyParameterType,
options : new MediaSerializerOptions
{
Culture = context.Request.AcceptCulture,
Encoding = contextTypeEncoding ?? Encoding.UTF8
}).ConfigureAwait(false);
}
catch (Exception ex)
{
context.AddInternalException(ex);
if (ex.GetType().Name.Contains("BadHttpRequestException"))
{
context.Response.StatusCode = 413;
}
else
{
context.AddValidationError(context.Configuration?.ValidationErrorConfiguration?.RequestDeserializationError);
context.Response.StatusCode = 400;
}
return(false);
}
}
}
return(true);
}
return(false);
}
/// <summary>Processes the HTTP endpoint invocation.</summary>
/// <param name="context">The context.</param>
/// <returns></returns>
internal static async Task <bool> ProcessHttpEndpointInvocation(this ApiRequestContext context)
{
if (!context.RequestAborted.IsCancellationRequested)
{
if (context.Routing?.Route?.Location?.MethodInfo != null)
{
var parameters = new List <object>();
bool addedUriParam = false;
bool addedBodyParam = false;
// -----------------------------------------------------------
// Build the parameters list to invoke the controller method
// This includes the UriModel and BodyModel if they exist.
// If any other parameters exists on the controller method
// they'll be passed a null value. A possible enhancement
// would be to pull the extra parameters from the DI container
// -----------------------------------------------------------
foreach (var param in context.Routing.Route.Location.MethodInfo.GetParameters())
{
if (!addedUriParam && context.Request.InvocationContext.UriModel != null && param.GetCustomAttribute <InUriAttribute>() != null)
{
parameters.Add(context.Request.InvocationContext.UriModel);
addedUriParam = true;
}
else if (!addedBodyParam && context.Request.InvocationContext.BodyModel != null && param.GetCustomAttribute <InBodyAttribute>() != null)
{
parameters.Add(context.Request.InvocationContext.BodyModel);
addedBodyParam = true;
}
else
{
var simpleParameter = context.Request.InvocationContext.SimpleParameters
.Where(p => p.Key.Name == param.Name && p.Key.ParameterType == param.ParameterType)
.FirstOrDefault();
if (simpleParameter.Value != null)
{
parameters.Add(simpleParameter.Value);
}
else
{
parameters.Add(param.ParameterType.GetDefaultValue());
}
}
}
// -----------------------------------------------------
// Invoke the controller method with the parameters list
// -----------------------------------------------------
object endpointResponse;
try
{
endpointResponse = context.Routing.Route.Location.MethodInfo.Invoke(
context.Request.InvocationContext.ControllerInstance,
parameters.ToArray());
}
catch (TargetInvocationException ex)
{
if (ex.InnerException != null)
{
throw ex.InnerException;
}
else
{
throw;
}
}
// -----------------------------------------------------
// If the response is awaitable then handle
// the await on the result
// -----------------------------------------------------
if (endpointResponse as Task != null)
{
await((Task)endpointResponse).ConfigureAwait(false);
var resultProperty = endpointResponse.GetType().GetProperty("Result");
var response = resultProperty?.GetValue(endpointResponse);
if (response != null && response.GetType().FullName != "System.Threading.Tasks.VoidTaskResult")
{
endpointResponse = response;
}
else
{
endpointResponse = null;
}
}
if (endpointResponse as IApiResponse != null)
{
context.Response.ResponseObject = ((IApiResponse)endpointResponse).Response;
context.Response.StatusCode = ((IApiResponse)endpointResponse).StatusCode;
context.Runtime.Internals.IsOverridingStatusCode = true;
var headers = ((IApiResponse)endpointResponse).Headers;
if (headers != null)
{
headers
.Where(h => h != null)
.ToList()
.ForEach(h => context.Response.AddHeader(h.Name, h.Value));
}
if (endpointResponse as IApiErrorResponse != null)
{
var errors = ((IApiErrorResponse)endpointResponse).Errors;
if (errors != null)
{
errors.ForEach(e => context.AddValidationError(e));
}
}
}
else
{
context.Response.ResponseObject = endpointResponse;
}
}
return(true);
}
return(false);
}