public LoggingStream(string requestId, ContentEventSourceWrapper eventSourceWrapper, int maxLoggedBytes, Stream originalStream, bool error, Encoding?textEncoding)
{
// Should only wrap non-seekable streams
Debug.Assert(!originalStream.CanSeek);
_requestId = requestId;
_eventSourceWrapper = eventSourceWrapper;
_maxLoggedBytes = maxLoggedBytes;
_originalStream = originalStream;
_error = error;
_textEncoding = textEncoding;
}
private async ValueTask ProcessAsync(HttpPipelineMessage message, ReadOnlyMemory <HttpPipelinePolicy> pipeline, bool async)
{
if (!s_eventSource.IsEnabled())
{
if (async)
{
await ProcessNextAsync(message, pipeline).ConfigureAwait(false);
}
else
{
ProcessNext(message, pipeline);
}
return;
}
s_eventSource.Request(message.Request);
Encoding?requestTextEncoding = null;
if (message.Request.TryGetHeader(HttpHeader.Names.ContentType, out var contentType))
{
ContentTypeUtilities.TryGetTextEncoding(contentType, out requestTextEncoding);
}
var logWrapper = new ContentEventSourceWrapper(s_eventSource, _logContent, _maxLength, message.CancellationToken);
await logWrapper.LogAsync(message.Request.ClientRequestId, message.Request.Content, requestTextEncoding, async).ConfigureAwait(false).EnsureCompleted(async);
var before = Stopwatch.GetTimestamp();
if (async)
{
await ProcessNextAsync(message, pipeline).ConfigureAwait(false);
}
else
{
ProcessNext(message, pipeline);
}
var after = Stopwatch.GetTimestamp();
bool isError = message.ResponseClassifier.IsErrorResponse(message);
ContentTypeUtilities.TryGetTextEncoding(message.Response.Headers.ContentType, out Encoding? responseTextEncoding);
bool wrapResponseContent = message.Response.ContentStream != null &&
message.Response.ContentStream.CanSeek == false &&
logWrapper.IsEnabled(isError);
if (isError)
{
s_eventSource.ErrorResponse(message.Response);
}
else
{
s_eventSource.Response(message.Response);
}
if (wrapResponseContent)
{
message.Response.ContentStream = new LoggingStream(message.Response.ClientRequestId, logWrapper, _maxLength, message.Response.ContentStream !, isError, responseTextEncoding);
}
else
{
await logWrapper.LogAsync(message.Response.ClientRequestId, isError, message.Response.ContentStream, responseTextEncoding, async).ConfigureAwait(false).EnsureCompleted(async);
}
var elapsedMilliseconds = (after - before) * 1000 / Stopwatch.Frequency;
if (elapsedMilliseconds > DelayWarningThreshold)
{
s_eventSource.ResponseDelay(message.Response, elapsedMilliseconds);
}
}
private async ValueTask ProcessAsync(HttpMessage message, ReadOnlyMemory <HttpPipelinePolicy> pipeline, bool async)
{
Request request = message.Request;
s_eventSource.Request(request.ClientRequestId, request.Method.ToString(), FormatUri(request.Uri), FormatHeaders(request.Headers), _assemblyName);
Encoding?requestTextEncoding = null;
if (request.TryGetHeader(HttpHeader.Names.ContentType, out var contentType))
{
ContentTypeUtilities.TryGetTextEncoding(contentType, out requestTextEncoding);
}
var logWrapper = new ContentEventSourceWrapper(s_eventSource, _logContent, _maxLength, message.CancellationToken);
await logWrapper.LogAsync(request.ClientRequestId, request.Content, requestTextEncoding, async).ConfigureAwait(false).EnsureCompleted(async);
var before = Stopwatch.GetTimestamp();
try
{
if (async)
{
await ProcessNextAsync(message, pipeline).ConfigureAwait(false);
}
else
{
ProcessNext(message, pipeline);
}
}
catch (Exception ex)
{
s_eventSource.ExceptionResponse(request.ClientRequestId, ex.ToString());
throw;
}
var after = Stopwatch.GetTimestamp();
bool isError = message.ResponseClassifier.IsErrorResponse(message);
Response response = message.Response;
ContentTypeUtilities.TryGetTextEncoding(response.Headers.ContentType, out Encoding? responseTextEncoding);
bool wrapResponseContent = response.ContentStream != null &&
response.ContentStream?.CanSeek == false &&
logWrapper.IsEnabled(isError);
double elapsed = (after - before) / (double)Stopwatch.Frequency;
if (isError)
{
s_eventSource.ErrorResponse(response.ClientRequestId, response.Status, response.ReasonPhrase, FormatHeaders(response.Headers), elapsed);
}
else
{
s_eventSource.Response(response.ClientRequestId, response.Status, response.ReasonPhrase, FormatHeaders(response.Headers), elapsed);
}
if (wrapResponseContent)
{
response.ContentStream = new LoggingStream(response.ClientRequestId, logWrapper, _maxLength, response.ContentStream !, isError, responseTextEncoding);
}
else
{
await logWrapper.LogAsync(response.ClientRequestId, isError, response.ContentStream, responseTextEncoding, async).ConfigureAwait(false).EnsureCompleted(async);
}
if (elapsed > RequestTooLongTime)
{
s_eventSource.ResponseDelay(response.ClientRequestId, elapsed);
}
}