private async Task ApplyRetention(
DocumentsOperationContext context,
TimeSeriesCollectionConfiguration config,
CollectionName collectionName,
TimeSeriesPolicy policy,
DateTime now)
{
var tss = context.DocumentDatabase.DocumentsStorage.TimeSeriesStorage;
if (policy.RetentionTime == TimeValue.MaxValue)
{
return;
}
var to = now.Add(-policy.RetentionTime);
var list = new List <Slice>();
while (true)
{
Cts.Token.ThrowIfCancellationRequested();
context.Reset();
context.Renew();
list.Clear();
using (context.OpenReadTransaction())
{
foreach (var item in tss.Stats.GetTimeSeriesByPolicyFromStartDate(context, collectionName, policy.Name, to, TimeSeriesRollups.TimeSeriesRetentionCommand.BatchSize))
{
if (RequiredForNextPolicy(context, config, policy, item, to))
{
continue;
}
if (tss.Rollups.HasPendingRollupFrom(context, item, to) == false)
{
list.Add(item);
}
}
if (list.Count == 0)
{
return;
}
if (Logger.IsInfoEnabled)
{
Logger.Info($"Found {list.Count} time-series for retention in policy {policy.Name} with collection '{collectionName.Name}' up-to {to}"
#if DEBUG
+ $"{Environment.NewLine}{string.Join(Environment.NewLine, list)}"
#endif
);
}
var cmd = new TimeSeriesRollups.TimeSeriesRetentionCommand(list, collectionName.Name, to);
await _database.TxMerger.Enqueue(cmd);
}
}
}