private void Flush(FlushMode flushMode)
{
// If this is the forced flush on Dispose, wait until we acquire the lock. Otherwise,
// just check to see if the lock is available, and if not, we are still processing the
// last tranche of appends, so bail out and wait for the next flush interval.
var lockTimeout = (flushMode == FlushMode.IfIdle ? TimeSpan.Zero : Timeout.InfiniteTimeSpan);
bool acquiredLock = false;
Monitor.TryEnter(_lock, lockTimeout, ref acquiredLock);
if (!acquiredLock)
{
return;
}
try
{
var file = new FileInfo(_filePath);
if (!file.Exists)
{
return;
}
var uploadPointer = file.Length;
if (uploadPointer <= _flushPointer)
{
return;
}
using (var stm = new FileStream(_filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
stm.Seek(_flushPointer, SeekOrigin.Begin);
_blob.AppendFromStream(stm, uploadPointer - _flushPointer);
_flushPointer = uploadPointer;
}
}
catch (Exception ex)
{
if (flushMode == FlushMode.IfIdle)
{
OnFlushError(ex);
}
else
{
throw;
}
}
finally
{
Monitor.Exit(_lock);
}
}
private void SaveToAzureStorage(IEnumerable <EventData> messages)
{
string content = "";
foreach (EventData eventData in messages)
{
content += Encoding.UTF8.GetString(eventData.GetBytes());
}
var stream = new MemoryStream(Encoding.UTF8.GetBytes(content));
appBlob.AppendFromStream(stream);
}
