public async Task CheckpointAsync()
{
_settings.LockExpirationTime = DateTime.UtcNow.AddSeconds(LockTime);
await _workerRepository.CheckpointAsync(_settings).ConfigureAwait(false);
var workers = await _workerRepository.GetWorkersAsync().ConfigureAwait(false);
var removedWorkers = _hash.GetNodes().Where(w => workers.All(a => a.Id != w.Id));
var changed = false;
foreach (var worker in removedWorkers)
{
if (_hash.RemoveNode(worker))
{
changed = true;
Logger.LogWarning($"Remove worker from hash {worker} {worker.Description}");
}
}
foreach (var worker in workers)
{
if (_hash.AddNode(worker))
{
Logger.LogInformation($"Add worker to hash {worker} {worker.Description}");
changed = true;
}
}
if (changed)
{
var nodeHashes = new List <int>();
foreach (var i in Enumerable.Range(0, Universe))
{
var node = _hash.GetShardForKey(i.ToString());
if (node.Id == _settings.Id)
{
nodeHashes.Add(i);
}
}
NodeHashes = nodeHashes;
}
Logger.LogInformation($"Lock {_settings.Id} {_settings.Description}");
}