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point_translator.go
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/
point_translator.go
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package transform
import (
"math"
"time"
"github.com/cloudfoundry/metric-store-release/src/pkg/rpc"
"github.com/influxdata/influxdb/models"
"github.com/prometheus/prometheus/model/labels"
)
var UNINDEXED_LABELS = map[string]bool{
"uri": true,
"content_length": true,
"user_agent": true,
"request_id": true,
"forwarded": true,
"remote_address": true,
}
func ToInfluxPoints(points []*rpc.Point) []models.Point {
transformedPoints := make([]models.Point, len(points))
for i, point := range points {
timestamp := time.Unix(0, point.Timestamp)
tags := models.NewTags(map[string]string{})
fields := models.Fields{
"value": point.Value,
}
for labelName, labelValue := range point.Labels {
if UNINDEXED_LABELS[labelName] {
fields[labelName] = labelValue
} else {
tags.Set([]byte(labelName), []byte(labelValue))
}
}
tsPoint := models.MustNewPoint(point.Name, tags, fields, timestamp)
transformedPoints[i] = tsPoint
}
return transformedPoints
}
// PromQL Metric Name Sanitization
// https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels
// First character: Match if it's NOT A-z, underscore, or colon [^A-z_:]
// All others: Match if they're NOT alphanumeric, underscore, or colon [\w_:]+?
func SanitizeMetricName(name string) string {
buffer := make([]byte, len(name))
for n := 0; n < len(name); n++ {
if name[n] == '_' || name[n] == ':' || (name[n] >= 'A' && name[n] <= 'Z') || (name[n] >= 'a' && name[n] <= 'z') {
buffer[n] = name[n]
continue
}
if (n > 0) && (name[n] >= '0' && name[n] <= '9') {
buffer[n] = name[n]
continue
}
buffer[n] = '_'
}
return string(buffer)
}
// PromQL Label Name Sanitization
// From: https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels
// First character: Match if it's NOT A-z or underscore [^A-z_]
// All others: Match if they're NOT alphanumeric or underscore [\w_]+?
func SanitizeLabelName(name string) string {
buffer := make([]byte, len(name))
for n := 0; n < len(name); n++ {
if name[n] == '_' || (name[n] >= 'A' && name[n] <= 'Z') || (name[n] >= 'a' && name[n] <= 'z') {
buffer[n] = name[n]
continue
}
if (n > 0) && (name[n] >= '0' && name[n] <= '9') {
buffer[n] = name[n]
continue
}
buffer[n] = '_'
}
return string(buffer)
}
func IsValidFloat(value float64) bool {
return !math.IsInf(value, 0) && !math.IsNaN(value)
}
func ConvertLabels(point *rpc.Point) labels.Labels {
originalLabels := point.Labels
newLabels := labels.Labels{}
if originalLabels == nil {
originalLabels = make(map[string]string)
}
for key, value := range originalLabels {
newLabels = append(newLabels, labels.Label{Name: key, Value: value})
}
newLabels = append(newLabels, labels.Label{Name: labels.MetricName, Value: point.Name})
return newLabels
}