public override MediaTypeFormatter GetPerRequestFormatterInstance(
Type type,
HttpRequestMessage request,
MediaTypeHeaderValue mediaType
)
{
MediaTypeFormatter formatter = null;
TraceWriter.TraceBeginEnd(
request,
TraceCategories.FormattingCategory,
TraceLevel.Info,
InnerFormatter.GetType().Name,
GetPerRequestFormatterInstanceMethodName,
beginTrace: (tr) =>
{
tr.Message = Error.Format(
SRResources.TraceGetPerRequestFormatterMessage,
InnerFormatter.GetType().Name,
type.Name,
mediaType
);
},
execute: () =>
{
formatter = InnerFormatter.GetPerRequestFormatterInstance(
type,
request,
mediaType
);
},
endTrace: (tr) =>
{
if (formatter == null)
{
tr.Message = SRResources.TraceGetPerRequestNullFormatterEndMessage;
}
else
{
string formatMessage = Object.ReferenceEquals(
MediaTypeFormatterTracer.ActualMediaTypeFormatter(formatter),
InnerFormatter
)
? SRResources.TraceGetPerRequestFormatterEndMessage
: SRResources.TraceGetPerRequestFormatterEndMessageNew;
tr.Message = Error.Format(formatMessage, formatter.GetType().Name);
}
},
errorTrace: null
);
if (formatter != null && !(formatter is IFormatterTracer))
{
formatter = MediaTypeFormatterTracer.CreateTracer(formatter, TraceWriter, request);
}
return(formatter);
}