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[exporter/prometheusremotewrite] Export exemplars for the Monotonic S…
…um metric.
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| # One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix' | ||
| change_type: bug_fix | ||
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| # The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver) | ||
| component: exporter/prometheusremotewriteexporter | ||
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| # A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`). | ||
| note: Export exemplars for the Monotonic Sum metric. | ||
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| # One or more tracking issues related to the change | ||
| issues: [ 17573 ] | ||
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| # (Optional) One or more lines of additional information to render under the primary note. | ||
| # These lines will be padded with 2 spaces and then inserted directly into the document. | ||
| # Use pipe (|) for multiline entries. | ||
| subtext: |
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113 changes: 113 additions & 0 deletions
113
pkg/translator/prometheusremotewrite/number_data_points.go
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| // Copyright The OpenTelemetry Authors | ||
| // | ||
| // 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 | ||
| // | ||
| // http://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. | ||
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| package prometheusremotewrite // import "github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/prometheusremotewrite" | ||
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| import ( | ||
| "math" | ||
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| "github.com/prometheus/common/model" | ||
| "github.com/prometheus/prometheus/model/value" | ||
| "github.com/prometheus/prometheus/prompb" | ||
| "go.opentelemetry.io/collector/pdata/pcommon" | ||
| "go.opentelemetry.io/collector/pdata/pmetric" | ||
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| prometheustranslator "github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/prometheus" | ||
| ) | ||
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| // addSingleSumNumberDataPoint converts the Gauge metric data point to a | ||
| // Prometheus time series with samples and labels. The result is stored in the | ||
| // series map. | ||
| func addSingleGaugeNumberDataPoint( | ||
| pt pmetric.NumberDataPoint, | ||
| resource pcommon.Resource, | ||
| metric pmetric.Metric, | ||
| settings Settings, | ||
| series map[string]*prompb.TimeSeries, | ||
| ) { | ||
| name := prometheustranslator.BuildPromCompliantName(metric, settings.Namespace) | ||
| labels := createAttributes( | ||
| resource, | ||
| pt.Attributes(), | ||
| settings.ExternalLabels, | ||
| model.MetricNameLabel, name, | ||
| ) | ||
| sample := &prompb.Sample{ | ||
| // convert ns to ms | ||
| Timestamp: convertTimeStamp(pt.Timestamp()), | ||
| } | ||
| switch pt.ValueType() { | ||
| case pmetric.NumberDataPointValueTypeInt: | ||
| sample.Value = float64(pt.IntValue()) | ||
| case pmetric.NumberDataPointValueTypeDouble: | ||
| sample.Value = pt.DoubleValue() | ||
| } | ||
| if pt.Flags().NoRecordedValue() { | ||
| sample.Value = math.Float64frombits(value.StaleNaN) | ||
| } | ||
| addSample(series, sample, labels, metric.Type().String()) | ||
| } | ||
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| // addSingleSumNumberDataPoint converts the Sum metric data point to a Prometheus | ||
| // time series with samples, labels and exemplars. The result is stored in the | ||
| // series map. | ||
| func addSingleSumNumberDataPoint( | ||
| pt pmetric.NumberDataPoint, | ||
| resource pcommon.Resource, | ||
| metric pmetric.Metric, | ||
| settings Settings, | ||
| series map[string]*prompb.TimeSeries, | ||
| ) { | ||
| name := prometheustranslator.BuildPromCompliantName(metric, settings.Namespace) | ||
| labels := createAttributes( | ||
| resource, | ||
| pt.Attributes(), | ||
| settings.ExternalLabels, | ||
| model.MetricNameLabel, name, | ||
| ) | ||
| sample := &prompb.Sample{ | ||
| // convert ns to ms | ||
| Timestamp: convertTimeStamp(pt.Timestamp()), | ||
| } | ||
| switch pt.ValueType() { | ||
| case pmetric.NumberDataPointValueTypeInt: | ||
| sample.Value = float64(pt.IntValue()) | ||
| case pmetric.NumberDataPointValueTypeDouble: | ||
| sample.Value = pt.DoubleValue() | ||
| } | ||
| if pt.Flags().NoRecordedValue() { | ||
| sample.Value = math.Float64frombits(value.StaleNaN) | ||
| } | ||
| sig := addSample(series, sample, labels, metric.Type().String()) | ||
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| if ts, ok := series[sig]; sig != "" && ok { | ||
| exemplars := getPromExemplars[pmetric.NumberDataPoint](pt) | ||
| ts.Exemplars = append(ts.Exemplars, exemplars...) | ||
| } | ||
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| // add _created time series if needed | ||
| if settings.ExportCreatedMetric && metric.Sum().IsMonotonic() { | ||
| startTimestamp := pt.StartTimestamp() | ||
| if startTimestamp != 0 { | ||
| createdLabels := createAttributes( | ||
| resource, | ||
| pt.Attributes(), | ||
| settings.ExternalLabels, | ||
| nameStr, | ||
| name+createdSuffix, | ||
| ) | ||
| addCreatedTimeSeriesIfNeeded(series, createdLabels, startTimestamp, metric.Type().String()) | ||
| } | ||
| } | ||
| } |
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