private void CheckNodes()
{
var toProcess = baseNodes.Length;
var nodes = baseNodes;
var enabledNodes = new List <NeoNode>();
var slowNodes = new List <NeoNode>();
using (ManualResetEvent resetEvent = new ManualResetEvent(false))
{
foreach (var nodeObj in nodes)
{
ThreadPool.QueueUserWorkItem(state =>
{
var node = state as NeoNode;
try
{
Log.Debug($"Checking availability for {node.URL}");
var request = (HttpWebRequest)WebRequest.Create(node.URL);
request.Timeout = 30000;
var timer = new Stopwatch();
timer.Start();
var response = (HttpWebResponse)request.GetResponse();
response.Close();
timer.Stop();
node.Latency = timer.Elapsed.TotalMilliseconds;
if (timer.Elapsed.TotalMilliseconds <= 1000)
{
enabledNodes.Add(node);
}
else
{
slowNodes.Add(node);
}
}
catch (Exception e)
{
Log.Error($"Failed to check, rpc node is not reachable {node.URL}: {e.Message}");
node.Latency = 999999999;
slowNodes.Add(node);
}
if (Interlocked.Decrement(ref toProcess) == 0)
{
resetEvent.Set();
}
}, nodeObj);
}
resetEvent.WaitOne();
LuxApiFactory.UpdateNodes(enabledNodes.ToArray(), slowNodes.ToArray());
}
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
LuxApiFactory.UpdateNodes(baseNodes, new NeoNode[0]);
if (_config["CheckServersAvailability"].Equals("false"))
{
return;
}
while (!stoppingToken.IsCancellationRequested)
{
CheckNodes();
await Task.Delay(20000, stoppingToken);
}
}
