Go에서 expfmt 패키지를 사용하여 Prometheus 데이터를 어떻게 구문 분석할 수 있나요?

go get github.com/prometheus/common/expfmt

import "github.com/prometheus/common/expfmt"

parser := expfmt.TextParser{}
metricFamilies, err := parser.TextToMetricFamilies(reader)
if err != nil {
    log.Fatal(err)
}

for name, metricFamily := range metricFamilies {
    fmt.Println("Metric Family:", name)
    for _, metric := range metricFamily.GetMetric() {
        fmt.Println("\tMetric:", metric)
        for _, label := range metric.GetLabel() {
            fmt.Println("\t\tLabel:", label)
        }
        for _, point := range metric.GetCounter().GetValue() {
            fmt.Println("\t\tPoint:", point)
        }
    }
}

path := "path/to/prometheus.txt"
mf, err := parseMF(path)
if err != nil {
    log.Fatal(err)
}

for k, v := range mf {
    fmt.Println(k)
    fmt.Println(v)
}