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OTLP: Use PrometheusConverter directly

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Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
This commit is contained in:
Arve Knudsen 2024-04-30 11:37:00 +02:00
parent 7f81065b01
commit 99f3051f45
6 changed files with 24 additions and 43 deletions
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1
CHANGELOG.md
View file

@ -4,6 +4,7 @@
* [CHANGE] TSDB: Fix the predicate checking for blocks which are beyond the retention period to include the ones right at the retention boundary. #9633
* [ENHANCEMENT] Rules: Add `rule_group_last_restore_duration_seconds` to measure the time it takes to restore a rule group. #13974
* [ENHANCEMENT] OTLP: Improve remote write format translation performance by using label set hashes for metric identifiers instead of string based ones. #14006 #13991
## 2.51.2 / 2024-04-09

10
storage/remote/otlptranslator/prometheusremotewrite/helper.go
View file

@ -219,7 +219,7 @@ func isValidAggregationTemporality(metric pmetric.Metric) bool {
return false
}
func (c *prometheusConverter) addHistogramDataPoints(dataPoints pmetric.HistogramDataPointSlice,
func (c *PrometheusConverter) addHistogramDataPoints(dataPoints pmetric.HistogramDataPointSlice,
resource pcommon.Resource, settings Settings, baseName string) {
for x := 0; x < dataPoints.Len(); x++ {
pt := dataPoints.At(x)
@ -395,7 +395,7 @@ func mostRecentTimestampInMetric(metric pmetric.Metric) pcommon.Timestamp {
return ts
}
func (c *prometheusConverter) addSummaryDataPoints(dataPoints pmetric.SummaryDataPointSlice, resource pcommon.Resource,
func (c *PrometheusConverter) addSummaryDataPoints(dataPoints pmetric.SummaryDataPointSlice, resource pcommon.Resource,
settings Settings, baseName string) {
for x := 0; x < dataPoints.Len(); x++ {
pt := dataPoints.At(x)
@ -468,7 +468,7 @@ func createLabels(name string, baseLabels []prompb.Label, extras ...string) []pr
// getOrCreateTimeSeries returns the time series corresponding to the label set if existent, and false.
// Otherwise it creates a new one and returns that, and true.
func (c *prometheusConverter) getOrCreateTimeSeries(lbls []prompb.Label) (*prompb.TimeSeries, bool) {
func (c *PrometheusConverter) getOrCreateTimeSeries(lbls []prompb.Label) (*prompb.TimeSeries, bool) {
h := timeSeriesSignature(lbls)
ts := c.unique[h]
if ts != nil {
@ -504,7 +504,7 @@ func (c *prometheusConverter) getOrCreateTimeSeries(lbls []prompb.Label) (*promp
// addTimeSeriesIfNeeded adds a corresponding time series if it doesn't already exist.
// If the time series doesn't already exist, it gets added with startTimestamp for its value and timestamp for its timestamp,
// both converted to milliseconds.
func (c *prometheusConverter) addTimeSeriesIfNeeded(lbls []prompb.Label, startTimestamp pcommon.Timestamp, timestamp pcommon.Timestamp) {
func (c *PrometheusConverter) addTimeSeriesIfNeeded(lbls []prompb.Label, startTimestamp pcommon.Timestamp, timestamp pcommon.Timestamp) {
ts, created := c.getOrCreateTimeSeries(lbls)
if created {
ts.Samples = []prompb.Sample{
@ -518,7 +518,7 @@ func (c *prometheusConverter) addTimeSeriesIfNeeded(lbls []prompb.Label, startTi
}
// addResourceTargetInfo converts the resource to the target info metric.
func addResourceTargetInfo(resource pcommon.Resource, settings Settings, timestamp pcommon.Timestamp, converter *prometheusConverter) {
func addResourceTargetInfo(resource pcommon.Resource, settings Settings, timestamp pcommon.Timestamp, converter *PrometheusConverter) {
if settings.DisableTargetInfo || timestamp == 0 {
return
}

2
storage/remote/otlptranslator/prometheusremotewrite/histograms.go
View file

@ -30,7 +30,7 @@ import (
const defaultZeroThreshold = 1e-128
func (c *prometheusConverter) addExponentialHistogramDataPoints(dataPoints pmetric.ExponentialHistogramDataPointSlice,
func (c *PrometheusConverter) addExponentialHistogramDataPoints(dataPoints pmetric.ExponentialHistogramDataPointSlice,
resource pcommon.Resource, settings Settings, baseName string) error {
for x := 0; x < dataPoints.Len(); x++ {
pt := dataPoints.At(x)

34
storage/remote/otlptranslator/prometheusremotewrite/metrics_to_prw.go
View file

@ -20,7 +20,6 @@ import (
"errors"
"fmt"
"sort"
"strconv"
"go.opentelemetry.io/collector/pdata/pcommon"
"go.opentelemetry.io/collector/pdata/pmetric"
@ -39,34 +38,21 @@ type Settings struct {
SendMetadata bool
}
// FromMetrics converts pmetric.Metrics to Prometheus remote write format.
func FromMetrics(md pmetric.Metrics, settings Settings) (map[string]*prompb.TimeSeries, error) {
c := newPrometheusConverter()
errs := c.fromMetrics(md, settings)
tss := c.timeSeries()
out := make(map[string]*prompb.TimeSeries, len(tss))
for i := range tss {
out[strconv.Itoa(i)] = &tss[i]
}
return out, errs
}
// prometheusConverter converts from OTel write format to Prometheus write format.
type prometheusConverter struct {
// PrometheusConverter converts from OTel write format to Prometheus write format.
type PrometheusConverter struct {
unique map[uint64]*prompb.TimeSeries
conflicts map[uint64][]*prompb.TimeSeries
}
func newPrometheusConverter() *prometheusConverter {
return &prometheusConverter{
func NewPrometheusConverter() *PrometheusConverter {
return &PrometheusConverter{
unique: map[uint64]*prompb.TimeSeries{},
conflicts: map[uint64][]*prompb.TimeSeries{},
}
}
// fromMetrics converts pmetric.Metrics to Prometheus remote write format.
func (c *prometheusConverter) fromMetrics(md pmetric.Metrics, settings Settings) (errs error) {
// FromMetrics converts pmetric.Metrics to Prometheus remote write format.
func (c *PrometheusConverter) FromMetrics(md pmetric.Metrics, settings Settings) (errs error) {
resourceMetricsSlice := md.ResourceMetrics()
for i := 0; i < resourceMetricsSlice.Len(); i++ {
resourceMetrics := resourceMetricsSlice.At(i)
@ -144,8 +130,8 @@ func (c *prometheusConverter) fromMetrics(md pmetric.Metrics, settings Settings)
return
}
// timeSeries returns a slice of the prompb.TimeSeries that were converted from OTel format.
func (c *prometheusConverter) timeSeries() []prompb.TimeSeries {
// TimeSeries returns a slice of the prompb.TimeSeries that were converted from OTel format.
func (c *PrometheusConverter) TimeSeries() []prompb.TimeSeries {
conflicts := 0
for _, ts := range c.conflicts {
conflicts += len(ts)
@ -177,7 +163,7 @@ func isSameMetric(ts *prompb.TimeSeries, lbls []prompb.Label) bool {
// addExemplars adds exemplars for the dataPoint. For each exemplar, if it can find a bucket bound corresponding to its value,
// the exemplar is added to the bucket bound's time series, provided that the time series' has samples.
func (c *prometheusConverter) addExemplars(dataPoint pmetric.HistogramDataPoint, bucketBounds []bucketBoundsData) {
func (c *PrometheusConverter) addExemplars(dataPoint pmetric.HistogramDataPoint, bucketBounds []bucketBoundsData) {
if len(bucketBounds) == 0 {
return
}
@ -202,7 +188,7 @@ func (c *prometheusConverter) addExemplars(dataPoint pmetric.HistogramDataPoint,
// If there is no corresponding TimeSeries already, it's created.
// The corresponding TimeSeries is returned.
// If either lbls is nil/empty or sample is nil, nothing is done.
func (c *prometheusConverter) addSample(sample *prompb.Sample, lbls []prompb.Label) *prompb.TimeSeries {
func (c *PrometheusConverter) addSample(sample *prompb.Sample, lbls []prompb.Label) *prompb.TimeSeries {
if sample == nil || len(lbls) == 0 {
// This shouldn't happen
return nil

4
storage/remote/otlptranslator/prometheusremotewrite/number_data_points.go
View file

@ -27,7 +27,7 @@ import (
"github.com/prometheus/prometheus/prompb"
)
func (c *prometheusConverter) addGaugeNumberDataPoints(dataPoints pmetric.NumberDataPointSlice,
func (c *PrometheusConverter) addGaugeNumberDataPoints(dataPoints pmetric.NumberDataPointSlice,
resource pcommon.Resource, settings Settings, name string) {
for x := 0; x < dataPoints.Len(); x++ {
pt := dataPoints.At(x)
@ -57,7 +57,7 @@ func (c *prometheusConverter) addGaugeNumberDataPoints(dataPoints pmetric.Number
}
}
func (c *prometheusConverter) addSumNumberDataPoints(dataPoints pmetric.NumberDataPointSlice,
func (c *PrometheusConverter) addSumNumberDataPoints(dataPoints pmetric.NumberDataPointSlice,
resource pcommon.Resource, metric pmetric.Metric, settings Settings, name string) {
for x := 0; x < dataPoints.Len(); x++ {
pt := dataPoints.At(x)

16
storage/remote/write_handler.go
View file

@ -208,21 +208,15 @@ func (h *otlpWriteHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
return
}
prwMetricsMap, errs := otlptranslator.FromMetrics(req.Metrics(), otlptranslator.Settings{
converter := otlptranslator.NewPrometheusConverter()
if err := converter.FromMetrics(req.Metrics(), otlptranslator.Settings{
AddMetricSuffixes: true,
})
if errs != nil {
level.Warn(h.logger).Log("msg", "Error translating OTLP metrics to Prometheus write request", "err", errs)
}
prwMetrics := make([]prompb.TimeSeries, 0, len(prwMetricsMap))
for _, ts := range prwMetricsMap {
prwMetrics = append(prwMetrics, *ts)
}); err != nil {
level.Warn(h.logger).Log("msg", "Error translating OTLP metrics to Prometheus write request", "err", err)
}
err = h.rwHandler.write(r.Context(), &prompb.WriteRequest{
Timeseries: prwMetrics,
Timeseries: converter.TimeSeries(),
})
switch {