mirror of https://github.com/grafana/grafana.git
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
package annotation
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import (
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"encoding/json"
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"fmt"
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)
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type annotationWithSamplingBody struct {
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Body profileSampledAnnotation `json:"body"`
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}
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type profileSampledAnnotation struct {
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Source *samplingSource `json:"source"`
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}
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type samplingSource struct {
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UsageGroup string `json:"usageGroup"`
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Probability float64 `json:"probability"`
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}
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func convertSamplingAnnotation(raw string, timestamp int64) (*processedProfileAnnotation, error) {
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var profileAnnotation annotationWithSamplingBody
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err := json.Unmarshal([]byte(raw), &profileAnnotation)
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if err != nil {
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return nil, fmt.Errorf("error parsing annotation data: %w", err)
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}
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if profileAnnotation.Body.Source == nil {
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return nil, fmt.Errorf("error parsing sampling annotation data: source is nil")
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}
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samplingInfo := profileAnnotation.Body.Source
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if samplingInfo.Probability == 1.0 {
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return nil, nil
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}
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reductionPercentage := (1 - samplingInfo.Probability) * 100
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id := fmt.Sprintf("%s-%.0f", samplingInfo.UsageGroup, reductionPercentage)
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text := fmt.Sprintf("Profile volume reduced by %.2f%% for this service.", reductionPercentage)
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return &processedProfileAnnotation{
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id: id,
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text: text,
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time: timestamp,
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timeEnd: timestamp,
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isRegion: true,
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}, nil
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}
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