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disabled_normalizer.go
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disabled_normalizer.go
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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package normalization
import (
"time"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
)
// NewDisabledNormalizer returns a Normalizer which does not perform any
// normalization. This may be useful if standard normalization consumes too
// much memory. For explicit reset points described in
// https://github.com/open-telemetry/opentelemetry-specification/blob/9555f9594c7ffe5dc333b53da5e0f880026cead1/specification/metrics/datamodel.md#resets-and-gaps
// it adjusts the end time to be after the start time to make the points valid
// without changing the start time (which causes the point to reset).
func NewDisabledNormalizer() Normalizer {
return &disabledNormalizer{}
}
type disabledNormalizer struct{}
// NormalizeExponentialHistogramDataPoint returns the point without normalizing.
func (d *disabledNormalizer) NormalizeExponentialHistogramDataPoint(point pmetric.ExponentialHistogramDataPoint, _ string) (pmetric.ExponentialHistogramDataPoint, bool) {
if !point.StartTimestamp().AsTime().Before(point.Timestamp().AsTime()) {
// Handle explicit reset points.
// Make a copy so we don't mutate underlying data.
newPoint := pmetric.NewExponentialHistogramDataPoint()
point.CopyTo(newPoint)
// StartTime = Timestamp - 1 ms
newPoint.SetStartTimestamp(pcommon.Timestamp(uint64(point.Timestamp()) - uint64(time.Millisecond)))
return newPoint, true
}
return point, true
}
// NormalizeHistogramDataPoint returns the point without normalizing.
func (d *disabledNormalizer) NormalizeHistogramDataPoint(point pmetric.HistogramDataPoint, _ string) (pmetric.HistogramDataPoint, bool) {
if !point.StartTimestamp().AsTime().Before(point.Timestamp().AsTime()) {
// Handle explicit reset points.
// Make a copy so we don't mutate underlying data.
newPoint := pmetric.NewHistogramDataPoint()
point.CopyTo(newPoint)
// StartTime = Timestamp - 1 ms
newPoint.SetStartTimestamp(pcommon.Timestamp(uint64(point.Timestamp()) - uint64(time.Millisecond)))
return newPoint, true
}
return point, true
}
// NormalizeNumberDataPoint returns the point without normalizing.
func (d *disabledNormalizer) NormalizeNumberDataPoint(point pmetric.NumberDataPoint, _ string) (pmetric.NumberDataPoint, bool) {
if !point.StartTimestamp().AsTime().Before(point.Timestamp().AsTime()) {
// Handle explicit reset points.
// Make a copy so we don't mutate underlying data.
newPoint := pmetric.NewNumberDataPoint()
point.CopyTo(newPoint)
// StartTime = Timestamp - 1 ms
newPoint.SetStartTimestamp(pcommon.Timestamp(uint64(point.Timestamp()) - uint64(time.Millisecond)))
return newPoint, true
}
return point, true
}
// NormalizeSummaryDataPoint returns the point without normalizing.
func (d *disabledNormalizer) NormalizeSummaryDataPoint(point pmetric.SummaryDataPoint, _ string) (pmetric.SummaryDataPoint, bool) {
if !point.StartTimestamp().AsTime().Before(point.Timestamp().AsTime()) {
// Handle explicit reset points.
// Make a copy so we don't mutate underlying data.
newPoint := pmetric.NewSummaryDataPoint()
point.CopyTo(newPoint)
// StartTime = Timestamp - 1 ms
newPoint.SetStartTimestamp(pcommon.Timestamp(uint64(point.Timestamp()) - uint64(time.Millisecond)))
return newPoint, true
}
return point, true
}