/// <summary>Processes the HTTP request accept.</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> ProcessHttpRequestAccept(this ApiRequestContext context, IApiRequestContextResolver contextResolver, IDeepSleepMediaSerializerFactory formatterFactory)
{
if (!context.RequestAborted.IsCancellationRequested)
{
if (context.Request != null)
{
var returnType = context.Routing.Route.Location.MethodReturnType;
if (returnType == typeof(void) || returnType == typeof(Task))
{
return(true);
}
var accept = !string.IsNullOrWhiteSpace(context.Request.Accept)
? context.Request.Accept
: AcceptHeader.All();
IDeepSleepMediaSerializer formatter = null;
IList <IDeepSleepMediaSerializer> overridingFormatters = null;
if (context.Configuration.ReadWriteConfiguration?.WriterResolver != null)
{
var overrides = await context.Configuration.ReadWriteConfiguration.WriterResolver(context?.RequestServices).ConfigureAwait(false);
overridingFormatters = overrides?.Formatters;
}
if (formatterFactory != null)
{
formatter = await formatterFactory.GetAcceptableFormatter(
acceptHeader : context.Configuration?.ReadWriteConfiguration?.AcceptHeaderOverride ?? accept,
objType : returnType,
writeableMediaTypes : context.Configuration?.ReadWriteConfiguration?.WriteableMediaTypes,
writeableFormatters : overridingFormatters,
formatterType : out var _).ConfigureAwait(false);
if (formatter == null && context.Configuration?.ReadWriteConfiguration?.AcceptHeaderFallback != null as AcceptHeader)
{
formatter = await formatterFactory.GetAcceptableFormatter(
acceptHeader : context.Configuration?.ReadWriteConfiguration.AcceptHeaderFallback,
objType : returnType,
writeableMediaTypes : context.Configuration?.ReadWriteConfiguration?.WriteableMediaTypes,
writeableFormatters : overridingFormatters,
formatterType : out var _).ConfigureAwait(false);
}
}
if (formatter == null)
{
var formatterTypes = formatterFactory != null
? formatterFactory.GetWriteableTypes(objType : returnType, overridingFormatters : overridingFormatters) ?? new List <string>()
: new DeepSleepMediaSerializerWriterFactory(context.RequestServices).GetWriteableTypes(objType: returnType, overridingFormatters) ?? new List <string>();
var writeableMediaTypes = context.Configuration?.ReadWriteConfiguration?.WriteableMediaTypes ?? formatterTypes ?? new List <string>();
var acceptableTypes = writeableMediaTypes
.Where(w => formatterTypes.Any(f => string.Equals(f, w, System.StringComparison.InvariantCultureIgnoreCase)))
.ToList();
string acceptable = (acceptableTypes != null && acceptableTypes.Count > 0)
? string.Join(", ", acceptableTypes)
: string.Empty;
context.Response.AddHeader("X-Allow-Accept", acceptable);
context.Response.StatusCode = 406;
return(false);
}
}
return(true);
}
return(false);
}
/// <summary>Processes the HTTP response body writing.</summary>
/// <param name="context">The context.</param>
/// <param name="contextResolver">The context resolver.</param>
/// <param name="formatterFactory">The formatter factory.</param>
/// <returns></returns>
internal static async Task <bool> ProcessHttpResponseBodyWriting(this ApiRequestContext context, IApiRequestContextResolver contextResolver, IDeepSleepMediaSerializerFactory formatterFactory)
{
if (!context.RequestAborted.IsCancellationRequested)
{
var isWriteableResponse = false;
if (context.Response.ResponseObject != null && formatterFactory != null)
{
var accept = !string.IsNullOrWhiteSpace(context.Request.Accept)
? context.Request.Accept
: AcceptHeader.All();
Encoding acceptEncoding = null;
if (context.Request.AcceptCharset != null as string)
{
foreach (var value in context.Request.AcceptCharset.Values)
{
try
{
if (!string.IsNullOrWhiteSpace(value.Charset))
{
acceptEncoding = Encoding.GetEncoding(value.Charset);
}
if (acceptEncoding != null)
{
break;
}
}
catch { }
}
}
IMediaSerializerOptions options = new MediaSerializerOptions
{
Culture = context.Request.AcceptCulture,
Encoding = acceptEncoding ?? Encoding.UTF8
};
var returnType = context.Response.ResponseObject.GetType();
var formatter = await formatterFactory.GetAcceptableFormatter(
objType : returnType,
acceptHeader : context.Configuration?.ReadWriteConfiguration?.AcceptHeaderOverride ?? accept,
writeableMediaTypes : context.Configuration?.ReadWriteConfiguration?.WriteableMediaTypes,
formatterType : out var formatterType).ConfigureAwait(false);
if (context.Configuration.ReadWriteConfiguration?.WriterResolver != null)
{
var overrides = await context.Configuration.ReadWriteConfiguration.WriterResolver(context?.RequestServices).ConfigureAwait(false);
if (overrides?.Formatters != null)
{
formatter = await formatterFactory.GetAcceptableFormatter(
objType : returnType,
acceptHeader : context.Configuration?.ReadWriteConfiguration?.AcceptHeaderOverride ?? accept,
writeableMediaTypes : context.Configuration?.ReadWriteConfiguration?.WriteableMediaTypes,
writeableFormatters : overrides.Formatters,
formatterType : out formatterType).ConfigureAwait(false);
}
}
if (formatter != null)
{
isWriteableResponse = true;
context.Response.ResponseWriter = formatter;
context.Response.ResponseWriterOptions = options;
context.Response.ContentType = formatterType;
}
}
if (!isWriteableResponse)
{
if (context.Response.HasSuccessStatus() && context.Response.StatusCode != 202 && !(context.Runtime?.Internals?.IsOverridingStatusCode ?? false))
{
context.Response.StatusCode = 204;
}
}
}
return(true);
}
