static IDisposable NotifyCluster(Option <ICluster> cluster, long timestamp) =>
cluster.Map(c =>
{
c.PublishToChannel(ClusterOnlineKey, new ClusterOnline {
Name = c.NodeName.Value, Timestamp = timestamp
});
return(c.SubscribeToChannel <ClusterOnline>(ClusterOnlineKey)
.Where(node => node.Name == c.NodeName.Value && node.Timestamp > timestamp)
.Take(1)
.Subscribe(_ =>
{
var cancel = new CancelShutdown();
try
{
Process.OnPreShutdown(cancel);
}
finally
{
if (!cancel.Cancelled)
{
Process.shutdownAll();
c.Disconnect();
}
}
}));
})
.IfNone(() => Observable.Return(new ClusterOnline()).Take(1).Subscribe());
internal static void OnPreShutdown(CancelShutdown cancel)
{
preShutdownSubj.OnNext(cancel);
if (!cancel.Cancelled)
{
preShutdownSubj.OnCompleted();
}
}