public void JoinBackground(ITransportClient client)
{
double avgBytesPerSec = 0;
var lastTime = DateTime.MinValue;
var buffer = new byte[0];
Envelope envelope;
long envelopeSize;
unsafe
{
envelopeSize = sizeof(Envelope);
}
this.storeReader.Seek(this.interval);
while (true)
{
if (this.storeReader.MoveNext(out envelope))
{
var length = this.storeReader.Read(ref buffer);
this.exporter.Throttle.Reset();
try
{
client.WriteMessage(envelope, buffer);
if (lastTime > DateTime.MinValue /* at least second message */)
{
if (this.maxBytesPerSecond < long.MaxValue)
{
// throttle to arbitrary max BPS
var elapsed = (envelope.OriginatingTime - lastTime).TotalSeconds;
var bytesPerSec = (envelopeSize + length) / elapsed;
double smoothingFactor = 1.0 / (this.bytesPerSecondSmoothingWindowSeconds / elapsed);
avgBytesPerSec = (bytesPerSec * smoothingFactor) + (avgBytesPerSec * (1.0 - smoothingFactor));
if (bytesPerSec > this.maxBytesPerSecond)
{
var wait = (int)(((avgBytesPerSec / this.maxBytesPerSecond) - elapsed) * 1000.0);
if (wait > 0)
{
Thread.Sleep(wait);
}
}
}
}
lastTime = envelope.OriginatingTime;
}
finally
{
// writers continue upon failure - meanwhile, remote client may reconnect and resume based on replay interval
this.exporter.Throttle.Set();
}
}
}
}