internal void PrepareRollups(DocumentsOperationContext context, DateTime currentTime, long take, long start, List <RollupState> states, out Stopwatch duration) { duration = Stopwatch.StartNew(); var table = context.Transaction.InnerTransaction.OpenTable(RollupSchema, TimeSeriesRollupTable); if (table == null) { return; } var currentTicks = currentTime.Ticks; using (DocumentsStorage.GetEtagAsSlice(context, start, out var startSlice)) { foreach (var item in table.SeekForwardFrom(RollupSchema.Indexes[NextRollupIndex], startSlice, 0)) { if (take <= 0) { return; } var rollUpTime = DocumentsStorage.TableValueToEtag((int)RollupColumns.NextRollup, ref item.Result.Reader); if (rollUpTime > currentTicks) { return; } DocumentsStorage.TableValueToSlice(context, (int)RollupColumns.Key, ref item.Result.Reader, out var key); SplitKey(key, out var docId, out var name); name = context.DocumentDatabase.DocumentsStorage.TimeSeriesStorage.GetOriginalName(context, docId, name); var state = new RollupState { Key = key, DocId = docId, Name = name, Collection = DocumentsStorage.TableValueToId(context, (int)RollupColumns.Collection, ref item.Result.Reader), NextRollup = new DateTime(rollUpTime), RollupPolicy = DocumentsStorage.TableValueToString(context, (int)RollupColumns.PolicyToApply, ref item.Result.Reader), Etag = DocumentsStorage.TableValueToLong((int)RollupColumns.Etag, ref item.Result.Reader), ChangeVector = DocumentsStorage.TableValueToChangeVector(context, (int)RollupColumns.ChangeVector, ref item.Result.Reader) }; if (_logger.IsInfoEnabled) { _logger.Info($"{state} is prepared."); } states.Add(state); take--; } } }
private void RollupOne(DocumentsOperationContext context, Table table, RollupState item, TimeSeriesPolicy policy, TimeSeriesCollectionConfiguration config) { var tss = context.DocumentDatabase.DocumentsStorage.TimeSeriesStorage; var rawTimeSeries = item.Name.Split(TimeSeriesConfiguration.TimeSeriesRollupSeparator)[0]; var intoTimeSeries = policy.GetTimeSeriesName(rawTimeSeries); var rollupStart = item.NextRollup.Add(-policy.AggregationTime); if (config.MaxRetention < TimeValue.MaxValue) { var next = new DateTime(NextRollup(_now.Add(-config.MaxRetention), policy)).Add(-policy.AggregationTime); var rollupStartTicks = Math.Max(rollupStart.Ticks, next.Ticks); rollupStart = new DateTime(rollupStartTicks); } var intoReader = tss.GetReader(context, item.DocId, intoTimeSeries, rollupStart, DateTime.MaxValue); var previouslyAggregated = intoReader.AllValues().Any(); if (previouslyAggregated) { var changeVector = intoReader.GetCurrentSegmentChangeVector(); if (ChangeVectorUtils.GetConflictStatus(item.ChangeVector, changeVector) == ConflictStatus.AlreadyMerged) { // this rollup is already done table.DeleteByKey(item.Key); return; } } if (_isFirstInTopology == false) { return; } var rollupEnd = new DateTime(NextRollup(_now, policy)).Add(-policy.AggregationTime).AddMilliseconds(-1); var reader = tss.GetReader(context, item.DocId, item.Name, rollupStart, rollupEnd); if (previouslyAggregated) { var hasPriorValues = tss.GetReader(context, item.DocId, item.Name, DateTime.MinValue, rollupStart).AllValues().Any(); if (hasPriorValues == false) { table.DeleteByKey(item.Key); var first = tss.GetReader(context, item.DocId, item.Name, rollupStart, DateTime.MaxValue).First(); if (first == default) { return; } if (first.Timestamp > item.NextRollup) { // if the 'source' time-series doesn't have any values it is retained. // so we need to aggregate only from the next time frame using (var slicer = new TimeSeriesSliceHolder(context, item.DocId, item.Name, item.Collection)) { tss.Rollups.MarkForPolicy(context, slicer, policy, first.Timestamp); } return; } } } // rollup from the the raw data will generate 6-value roll up of (first, last, min, max, sum, count) // other rollups will aggregate each of those values by the type var mode = item.Name.Contains(TimeSeriesConfiguration.TimeSeriesRollupSeparator) ? AggregationMode.FromAggregated : AggregationMode.FromRaw; var rangeSpec = new RangeGroup(); switch (policy.AggregationTime.Unit) { case TimeValueUnit.Second: rangeSpec.Ticks = TimeSpan.FromSeconds(policy.AggregationTime.Value).Ticks; rangeSpec.TicksAlignment = RangeGroup.Alignment.Second; break; case TimeValueUnit.Month: rangeSpec.Months = policy.AggregationTime.Value; break; default: throw new ArgumentOutOfRangeException(nameof(policy.AggregationTime.Unit), $"Not supported time value unit '{policy.AggregationTime.Unit}'"); } rangeSpec.InitializeRange(rollupStart); var values = GetAggregatedValues(reader, rangeSpec, mode); if (previouslyAggregated) { // if we need to re-aggregate we need to delete everything we have from that point on. var removeRequest = new TimeSeriesStorage.DeletionRangeRequest { Collection = item.Collection, DocumentId = item.DocId, Name = intoTimeSeries, From = rollupStart, To = DateTime.MaxValue, }; tss.DeleteTimestampRange(context, removeRequest); } var before = context.LastDatabaseChangeVector; var after = tss.AppendTimestamp(context, item.DocId, item.Collection, intoTimeSeries, values, verifyName: false); if (before != after) { RolledUp++; } table.DeleteByKey(item.Key); var stats = tss.Stats.GetStats(context, item.DocId, item.Name); if (stats.End > rollupEnd) { // we know that we have values after the current rollup and we need to mark them var nextRollup = rollupEnd.AddMilliseconds(1); intoReader = tss.GetReader(context, item.DocId, item.Name, nextRollup, DateTime.MaxValue); if (intoReader.Init() == false) { Debug.Assert(false, "We have values but no segment?"); return; } using (var slicer = new TimeSeriesSliceHolder(context, item.DocId, item.Name, item.Collection)) { tss.Rollups.MarkForPolicy(context, slicer, policy, intoReader.First().Timestamp); } } }
private static void MarkForNextPolicyAfterRollup(DocumentsOperationContext context, Table table, RollupState item, TimeSeriesPolicy policy, TimeSeriesStorage tss, DateTime rollupEnd) { table.DeleteByKey(item.Key); (long Count, DateTime Start, DateTime End)stats = tss.Stats.GetStats(context, item.DocId, item.Name); if (stats.End > rollupEnd) { // we know that we have values after the current rollup and we need to mark them var nextRollup = rollupEnd.AddMilliseconds(1); TimeSeriesReader intoReader = tss.GetReader(context, item.DocId, item.Name, nextRollup, DateTime.MaxValue); if (intoReader.Init() == false) { Debug.Assert(false, "We have values but no segment?"); return; } using (var slicer = new TimeSeriesSliceHolder(context, item.DocId, item.Name, item.Collection)) { tss.Rollups.MarkForPolicy(context, slicer, policy, intoReader.First().Timestamp); } } }