void IHandle <SystemMessage.WaitForChaserToCatchUp> .Handle(SystemMessage.WaitForChaserToCatchUp message)
{
// if we are in states, that doesn't need to wait for chaser, ignore
if (_vnodeState != VNodeState.PreMaster && _vnodeState != VNodeState.PreReplica)
{
throw new Exception(string.Format("{0} appeared in {1} state.", message.GetType().Name, _vnodeState));
}
if (Writer.Checkpoint.Read() != Writer.Checkpoint.ReadNonFlushed())
{
Writer.Flush();
}
var sw = Stopwatch.StartNew();
while (Db.Config.ChaserCheckpoint.Read() < Db.Config.WriterCheckpoint.Read() &&
sw.Elapsed < WaitForChaserSingleIterationTimeout)
{
Thread.Sleep(1);
}
if (Db.Config.ChaserCheckpoint.Read() == Db.Config.WriterCheckpoint.Read())
{
Bus.Publish(new SystemMessage.ChaserCaughtUp(message.CorrelationId));
return;
}
var totalTime = message.TotalTimeWasted + sw.Elapsed;
if (totalTime < TimeSpan.FromSeconds(5) || (int)totalTime.TotalSeconds % 30 == 0) // too verbose otherwise
{
Log.Debug("Still waiting for chaser to catch up already for {0}...", totalTime);
}
Bus.Publish(new SystemMessage.WaitForChaserToCatchUp(message.CorrelationId, totalTime));
}
private void Handle(SystemMessage.WaitForChaserToCatchUp message)
{
if (message.CorrelationId != _stateCorrelationId)
{
return;
}
_outputBus.Publish(message);
}
