private void SelectFastest(NodeSelectorState state, int index)
{
state.Fastest = index;
Interlocked.Exchange(ref state.SpeedTestMode, 0);
_updateFastestNodeTimer.Change(TimeSpan.FromMinutes(1), Timeout.InfiniteTimeSpan);
}
public bool OnUpdateTopology(Topology topology, bool forceUpdate = false)
{
if (topology == null)
{
return(false);
}
if (_state.Topology.Etag >= topology.Etag && forceUpdate == false)
{
return(false);
}
var state = new NodeSelectorState(topology);
Interlocked.Exchange(ref _state, state);
return(true);
}
private static int FindMaxIndex(NodeSelectorState state)
{
var stateFastest = state.FastestRecords;
var maxIndex = 0;
var maxValue = 0;
for (var i = 0; i < stateFastest.Length; i++)
{
if (maxValue >= stateFastest[i])
{
continue;
}
maxIndex = i;
maxValue = stateFastest[i];
}
return(maxIndex);
}
public NodeSelector(Topology topology)
{
_state = new NodeSelectorState(topology);
}
private static ValueTuple <int, ServerNode> UnlikelyEveryoneFaultedChoice(NodeSelectorState state)
{
// if there are all marked as failed, we'll chose the first
// one so the user will get an error (or recover :-) );
return(0, state.Nodes[0]);
}