Go Prometheus Exporter 快速接入 metrics 实战

示例代码（main.go）：package main import ( "net/http" "github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus/promhttp" ) var reqTotal = prometheus.NewCounterVec( prometheus.CounterOpts{Name: "http_requests_total", Help: "Total HTTP requests"}, []string{"path"}, ) func init() { prometheus.MustRegister(reqTotal) } func main() { http.Handle("/metrics", promhttp.Handler()) http.HandleFunc("/api/ping", func(w http.ResponseWriter, r *http.Request) { reqTotal.WithLabelValues("/api/ping").Inc() w.Header().Set("content-type", "application/json") w.Write([]byte(`{"ok":true}`)) }) http.ListenAndServe(":8080", nil) }