feat: metrics including pprof, expvars

infra/conf/metrics.go

@@ -0,0 +1,19 @@
+package conf
+
+import (
+	"github.com/xtls/xray-core/app/metrics"
+)
+
+type MetricsConfig struct {
+	Tag string `json:"tag"`
+}
+
+func (c *MetricsConfig) Build() (*metrics.Config, error) {
+	if c.Tag == "" {
+		return nil, newError("metrics tag can't be empty.")
+	}
+
+	return &metrics.Config{
+		Tag: c.Tag,
+	}, nil
+}