public async Task <IReadOnlyList <Record> > GetRecords(IEnumerable <ByteString> keys)
{
var list = new List <Record>();
foreach (var k in keys)
{
var replay = false;
var retryCount = Configuration.ReadRetryCount;
var delay = Configuration.ReadLoopDelay;
do
{
var cmpkey = k.ToByteArray();
var r = await RecordCollection.Find(x => x.Key == cmpkey).FirstOrDefaultAsync();
if (r == null)
{
list.Add(new Record(k, ByteString.Empty, ByteString.Empty));
replay = false;
}
else
{
// retry
if (r.TransactionLock != null)
{
if (retryCount <= 0)
{
throw new Exception("Lock timeout reading record " + cmpkey.ToString());
}
#if DEBUG
Logger.LogDebug($"Waiting token {new ByteString(r.TransactionLock)} {k.ToString()} {retryCount}");
#endif
await Task.Delay(delay);
delay = TimeSpan.FromMilliseconds(delay.TotalMilliseconds * 1.5);
replay = true;
retryCount--;
}
else
{
list.Add(new Record(k, new ByteString(r.Value), new ByteString(r.Version)));
replay = false;
}
}
} while (replay);
}
return(list.AsReadOnly());
}
public async Task <IReadOnlyList <Record> > GetRecords(IEnumerable <ByteString> keys)
{
var list = new List <Record>();
foreach (var k in keys)
{
var replay = false;
var retryCount = Configuration.ReadRetryCount;
do
{
var cmpkey = k.ToByteArray();
var r = await RecordCollection.Find(x => x.Key == cmpkey).FirstOrDefaultAsync();
if (r == null)
{
list.Add(new Record(k, ByteString.Empty, ByteString.Empty));
}
else
{
// retry
if (r.TransactionLock != null)
{
if (retryCount <= 0)
{
throw new Exception("Lock timeout reading record " + cmpkey.ToString());
}
await Task.Delay(Configuration.ReadLoopDelay);
replay = true;
retryCount--;
}
else
{
list.Add(new Record(k, new ByteString(r.Value), new ByteString(r.Version)));
}
}
} while (replay);
}
return(list.AsReadOnly());
}
