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Fix data alignment on the backend

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This commit is contained in:
Alexander Zobnin
2021-08-06 11:39:56 +03:00
parent c3ce8824af
commit d1f639f568
3 changed files with 44 additions and 38 deletions
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50
pkg/datasource/zabbix.go
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@@ -100,39 +100,7 @@ func (ds *ZabbixDatasourceInstance) queryNumericDataForItems(ctx context.Context
}
series := convertHistoryToTimeSeries(history, items)
// Align time series data if possible
useTrend := ds.isUseTrend(query.TimeRange)
if !query.Options.DisableDataAlignment && !ds.Settings.DisableDataAlignment && !useTrend {
for _, s := range series {
if s.Meta.Interval != nil {
s.TS = s.TS.Align(*s.Meta.Interval)
}
}
}
series, err = applyFunctions(series, query.Functions)
if err != nil {
return nil, err
}
for _, s := range series {
if int64(s.Len()) > query.MaxDataPoints && query.Interval > 0 {
downsampleFunc := consolidateBy
if downsampleFunc == "" {
downsampleFunc = "avg"
}
downsampled, err := applyGroupBy(s.TS, query.Interval.String(), downsampleFunc)
if err == nil {
s.TS = downsampled
} else {
ds.logger.Debug("Error downsampling series", "error", err)
}
}
}
frames := convertTimeSeriesToDataFrames(series)
return frames, nil
return ds.applyDataProcessing(ctx, query, series)
}
func (ds *ZabbixDatasourceInstance) applyDataProcessing(ctx context.Context, query *QueryModel, series []*timeseries.TimeSeriesData) ([]*data.Frame, error) {
@@ -140,10 +108,18 @@ func (ds *ZabbixDatasourceInstance) applyDataProcessing(ctx context.Context, que
// Align time series data if possible
useTrend := ds.isUseTrend(query.TimeRange)
if !query.Options.DisableDataAlignment && !ds.Settings.DisableDataAlignment && !useTrend {
for _, s := range series {
if s.Meta.Interval != nil {
s.TS = s.TS.Align(*s.Meta.Interval)
disableDataAlignment := query.Options.DisableDataAlignment || ds.Settings.DisableDataAlignment
if !disableDataAlignment {
if useTrend {
for _, s := range series {
// Trend data is already aligned (by 1 hour interval), but null values should be added
s.TS = s.TS.FillTrendWithNulls()
}
} else {
for _, s := range series {
if s.Meta.Interval != nil {
s.TS = s.TS.Align(*s.Meta.Interval)
}
}
}
}