/// <summary>
/// Gets the first content-type match for the handler from a list of accepted types
/// </summary>
/// <param name="mediaTypeHandler">The content type handler.</param>
/// <param name="acceptedTypes">The accepted types.</param>
/// <returns>The MIME content type, or <c>null</c> if no match is found.</returns>
public static string GetContentType(this IMediaTypeHandler mediaTypeHandler, IList <string> acceptedTypes)
{
HashSet <string> contentTypes;
if (!Cache.TryGetValue(mediaTypeHandler.GetType(), out contentTypes))
{
lock (Sync)
{
if (!Cache.TryGetValue(mediaTypeHandler.GetType(), out contentTypes))
{
contentTypes =
new HashSet <string>(
MediaTypesAttribute.Get(mediaTypeHandler.GetType()).SelectMany(cta => cta.ContentTypes),
StringComparer.OrdinalIgnoreCase);
Cache[mediaTypeHandler.GetType()] = contentTypes;
}
}
}
return(acceptedTypes.FirstOrDefault(x => ContainsMatchingContentType(contentTypes, x)));
}
/// <summary>
/// Gets the first content-type match for the handler from a list of accepted types
/// </summary>
/// <param name="mediaTypeHandler">The content type handler.</param>
/// <param name="acceptedTypes">The accepted types.</param>
/// <returns>The MIME content type, or <c>null</c> if no match is found.</returns>
public static string GetContentType(this IMediaTypeHandler mediaTypeHandler, IList <string> acceptedTypes)
{
return(MediaTypesAttribute.Get(mediaTypeHandler.GetType()).SelectMany(cta => cta.ContentTypes)
.FirstOrDefault(acceptedTypes.Contains));
}
public async ValueTask <bool> Serialize(string mediaType, object obj, PipeWriter writer)
{
IMediaTypeHandler handler = default;
try
{
if (this._handlers.TryGetValue(mediaType, out handler))
{
await handler.Serialize(obj, writer);
return(true);
}
}
catch (Exception exc)
{
this._logger.LogWarning(exc, $"Failure to serialize body into '{mediaType}' using {handler.GetType().FullName}: {exc.Message}.");
}
return(false);
}
