void FinishOrCancelCapture(HttpResponse response, bool cancel)
{
if (_capturingResponse != response)
{
return;
}
if (_capturingFilter == null)
{
throw new InvalidOperationException("Response capturing filter is missing.");
}
lock (this)
{
try
{
_capturingFilter.StopFiltering(cancel);
if (!cancel)
{
// remember the captured response
string tempFilename = _capturingFilter.CaptureFilename;
_infoFilename = tempFilename.Replace(TempFileExt, InfoFileExt);
_dataFilename = tempFilename.Replace(TempFileExt, DataFileExt);
DateTime timestamp = DateTime.UtcNow;
_cachedResponseHash = CalculateHandlerHash(_path);
_cachedResponseExpiry = timestamp + _duration;
_nextResponseValidationTime = timestamp + HttpModule.OutputCache.FileValidationDelay;
// save info file
string info = string.Format(
"<{0} path=\"{1}\" vary=\"{2}\" timestamp=\"{3}\" expiry=\"{4}\" hash=\"{5}\" />",
InfoTagName, _path, _varyById,
timestamp.ToBinary(), _cachedResponseExpiry.ToBinary(),
_cachedResponseHash);
File.WriteAllText(_infoFilename, info, Encoding.UTF8);
// rename temp file into data file
File.Move(tempFilename, _dataFilename);
// read the data into memory if needed
_cachedResponseBytes = new byte[0];
if (_serveFromMemory)
{
_cachedResponseBytes = File.ReadAllBytes(_dataFilename);
}
// now everything's ready
_cachedResponseLoaded = true;
}
}
finally
{
// notify any waiting threads that capturing is complete
_capturingFilter = null;
_capturingResponse = null;
_capturingEvent.Set();
}
}
}
void FinishOrCancelCapture(HttpResponse response, bool cancel)
{
if (_capturingResponse != response)
{
return;
}
if (_capturingFilter == null)
{
throw new InvalidOperationException("Response capturing filter is missing.");
}
lock (this)
{
try
{
_capturingFilter.StopFiltering(cancel);
if (!cancel)
{
// remember the captured response
string tempFilename = _capturingFilter.CaptureFilename;
_infoFilename = tempFilename.Replace(TempFileExt, InfoFileExt);
_dataFilename = tempFilename.Replace(TempFileExt, DataFileExt);
DateTime timestamp = DateTime.UtcNow;
_cachedResponseHash = CalculateHandlerHash(_path);
_cachedResponseExpiry = timestamp + _duration;
_nextResponseValidationTime = timestamp + HttpModule.OutputCache.FileValidationDelay;
// save info file
string info = string.Format(
"<{0} path=\"{1}\" vary=\"{2}\" timestamp=\"{3}\" expiry=\"{4}\" hash=\"{5}\" />",
InfoTagName, _path, _varyById,
timestamp.ToBinary(), _cachedResponseExpiry.ToBinary(),
_cachedResponseHash);
File.WriteAllText(_infoFilename, info, Encoding.UTF8);
// rename temp file into data file
File.Move(tempFilename, _dataFilename);
// read the data into memory if needed
_cachedResponseBytes = new byte[0];
if (_serveFromMemory)
{
_cachedResponseBytes = File.ReadAllBytes(_dataFilename);
}
// now everything's ready
_cachedResponseLoaded = true;
}
}
finally
{
// notify any waiting threads that capturing is complete
_capturingFilter = null;
_capturingResponse = null;
_capturingEvent.Set();
}
}
}
public bool TrySendResponseOrStartResponseCapture(HttpResponse response)
{
byte[] responseData = null;
string responseFile = null;
// loop while trying to either send or capture the response
// (the loop is needed for cases when another thread does the capture)
for (; ; )
{
lock (this)
{
// attempt to find the cached response on disk (only once)
if (!_triedToLoadCachedResponse)
{
LookForCachedResponseOnDisk();
_triedToLoadCachedResponse = true;
}
if (_cachedResponseLoaded && ValidateLoadedCachedResponse())
{
// serve the cached response if validated
if (_serveFromMemory)
{
responseData = _cachedResponseBytes;
}
else
{
responseFile = _dataFilename;
}
// send the response outside of the lock
break;
}
// couldn't send the response - try to capture it under lock
// (don't attempt to capture the same response from 2 threads at the same time)
if (_capturingResponse == null)
{
// generate new file name
string filename = string.Format("{0}_{1:x8}{2}",
_filenamePrefix, Guid.NewGuid().ToString().GetHashCode(), TempFileExt);
_capturingFilter = new ResponseFilter(response.Filter, filename);
response.Filter = _capturingFilter;
// move the event - non-signaled state
_capturingEvent.Reset();
// remember the response
_capturingResponse = response;
// started capturing - return from this method
break;
}
}
// capturing started from another thread - wait until done and continue (outside of the lock)
_capturingEvent.WaitOne();
}
// send the cached response if available (outside of the lock)
if (responseData != null)
{
response.OutputStream.Write(responseData, 0, responseData.Length);
return true;
}
else if (responseFile != null)
{
try
{
response.TransmitFile(responseFile);
}
catch
{
// if there is a problem sending data file, invalidate the cached response
InvalidateCachedResponse();
throw;
}
return true;
}
else
{
return false;
}
}
public bool TrySendResponseOrStartResponseCapture(HttpResponse response)
{
byte[] responseData = null;
string responseFile = null;
// loop while trying to either send or capture the response
// (the loop is needed for cases when another thread does the capture)
for (; ;)
{
lock (this)
{
// attempt to find the cached response on disk (only once)
if (!_triedToLoadCachedResponse)
{
LookForCachedResponseOnDisk();
_triedToLoadCachedResponse = true;
}
if (_cachedResponseLoaded && ValidateLoadedCachedResponse())
{
// serve the cached response if validated
if (_serveFromMemory)
{
responseData = _cachedResponseBytes;
}
else
{
responseFile = _dataFilename;
}
// send the response outside of the lock
break;
}
// couldn't send the response - try to capture it under lock
// (don't attempt to capture the same response from 2 threads at the same time)
if (_capturingResponse == null)
{
// generate new file name
string filename = string.Format("{0}_{1:x8}{2}",
_filenamePrefix, Guid.NewGuid().ToString().GetHashCode(), TempFileExt);
_capturingFilter = new ResponseFilter(response.Filter, filename);
response.Filter = _capturingFilter;
// move the event - non-signaled state
_capturingEvent.Reset();
// remember the response
_capturingResponse = response;
// started capturing - return from this method
break;
}
}
// capturing started from another thread - wait until done and continue (outside of the lock)
_capturingEvent.WaitOne();
}
// send the cached response if available (outside of the lock)
if (responseData != null)
{
response.OutputStream.Write(responseData, 0, responseData.Length);
return(true);
}
else if (responseFile != null)
{
try
{
response.TransmitFile(responseFile);
}
catch
{
// if there is a problem sending data file, invalidate the cached response
InvalidateCachedResponse();
throw;
}
return(true);
}
else
{
return(false);
}
}
