public HistoricalExecutionSource(BitFlyerClient client, BfProductCode productCode, long before, long after, long readCount = ReadCountMax)
{
readCount = Math.Min(readCount, ReadCountMax);
_source = Observable.Create <IBfExecution>(observer => {
return(Task.Run(async() =>
{
while (true)
{
var resp = client.GetExecutions(productCode, ReadCountMax, before, 0);
if (resp.IsError)
{
switch (resp.StatusCode)
{
case HttpStatusCode.BadRequest: // no more records
observer.OnCompleted();
return;
case HttpStatusCode.InternalServerError:
await Task.Delay(30 * 1000); // Probably server is in maintanace. wait 30 secs
break;
}
continue;
}
var elements = resp.GetContent();
foreach (var element in elements)
{
if (_cancel.IsCancellationRequested)
{
observer.OnCompleted();
return;
}
if (element.ExecutionId <= after)
{
observer.OnCompleted();
return;
}
observer.OnNext(element);
}
before = elements.Last().ExecutionId;
}
}));
});
}
