public IObservable <StreamAction> GetInstances(CancellationToken token)
{
IDisposable subscription = null;
return(Observable.Create <StreamAction>(async(observer) =>
{
try
{
var result = await _etcd.GetKey(_key).WithRecursive(true);
ProcessInstances(observer, result);
}
catch (Draft.Exceptions.KeyNotFoundException)
{
}
subscription = _etcd.Watch(_key).WithRecursive(true).Subscribe((IKeyEvent e) =>
{
if (token.IsCancellationRequested)
{
subscription.Dispose();
return;
}
if (Interlocked.CompareExchange(ref _processing, 1, 0) == 0)
{
// TODO
// ProcessInstances(observer, e);
Interlocked.Exchange(ref _processing, 0);
}
});
return Disposable.Create(() => { subscription.Dispose(); });
}));
}
internal override EtcdConfigurationChangeToken ProduceChangeToken(IEtcdClient client)
{
var changeToken = base.ProduceChangeToken(client);
client.Watch(keyToMonitor, (oldValue, newValue) =>
{
if (callback(oldValue, newValue))
{
Refresh();
}
});
return(changeToken);
}