prometheus/config/helpers.go

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package config
import (
"fmt"
"github.com/prometheus/prometheus/model"
"log"
"regexp"
"strconv"
"time"
)
// Unfortunately, more global variables that are needed for parsing.
var tmpJobOptions = map[string]string{}
var tmpJobTargets = []Targets{}
var tmpTargetEndpoints = []string{}
var tmpTargetLabels = model.LabelSet{}
func configError(error string, v ...interface{}) {
message := fmt.Sprintf(error, v...)
log.Fatal(fmt.Sprintf("Line %v, char %v: %s", yyline, yypos, message))
}
func PushJobOption(option string, value string) {
tmpJobOptions[option] = value
}
func PushJobTargets() {
targets := Targets{
Endpoints: tmpTargetEndpoints,
Labels: tmpTargetLabels,
}
tmpJobTargets = append(tmpJobTargets, targets)
tmpTargetLabels = model.LabelSet{}
tmpTargetEndpoints = []string{}
}
func PushTargetEndpoints(endpoints []string) {
for _, endpoint := range endpoints {
tmpTargetEndpoints = append(tmpTargetEndpoints, endpoint)
}
}
func PushTargetLabels(labels model.LabelSet) {
for k, v := range labels {
tmpTargetLabels[k] = v
}
}
func PopJob() {
if err := parsedConfig.AddJob(tmpJobOptions, tmpJobTargets); err != nil {
configError(err.Error())
}
tmpJobOptions = map[string]string{}
tmpJobTargets = []Targets{}
}
func stringToDuration(durationStr string) time.Duration {
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durationRE := regexp.MustCompile("^([0-9]+)([ywdhms]+)$")
matches := durationRE.FindStringSubmatch(durationStr)
if len(matches) != 3 {
configError("Not a valid duration string: '%v'", durationStr)
}
value, _ := strconv.Atoi(matches[1])
unit := matches[2]
switch unit {
case "y":
value *= 60 * 60 * 24 * 365
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case "w":
value *= 60 * 60 * 24 * 7
case "d":
value *= 60 * 60 * 24
case "h":
value *= 60 * 60
case "m":
value *= 60
}
return time.Duration(value) * time.Second
}