public override IObservable <HttpTransfer> WhenUpdated()
{
// TODO: cancel/error, should remove from db
var query = new QueryFilter().ToNative();
this.httpObs = this.httpObs ?? Observable
.Create <HttpTransfer>(ob =>
{
var lastRun = DateTime.UtcNow;
var disposer = new CompositeDisposable();
HttpTransferBroadcastReceiver
.HttpEvents
.Subscribe(ob.OnNext)
.DisposedBy(disposer);
Observable
.Interval(TimeSpan.FromSeconds(2))
.Subscribe(_ =>
{
using (var cursor = this.context.GetManager().InvokeQuery(query))
{
while (cursor.MoveToNext())
{
var lastModEpoch = cursor.GetLong(cursor.GetColumnIndex(Native.ColumnLastModifiedTimestamp));
var epoch = DateTimeOffset.FromUnixTimeMilliseconds(lastModEpoch);
if (epoch > lastRun)
{
var transfer = cursor.ToLib();
ob.OnNext(transfer);
}
}
}
lastRun = DateTime.UtcNow;
})
.DisposedBy(disposer);
return(disposer);
})
.Publish()
.RefCount();
return(this.httpObs.Merge(base.WhenUpdated()));
}