feat: add transport-neutral request metrics

omni.go

@@ -9,6 +9,7 @@ import (
 	apierrors "git.yuntuo.hk/k2safe/go-omni/errors"
 	"git.yuntuo.hk/k2safe/go-omni/httpx"
 	"git.yuntuo.hk/k2safe/go-omni/logx"
+	"git.yuntuo.hk/k2safe/go-omni/metrics"
 	"git.yuntuo.hk/k2safe/go-omni/response"
 )
 
@@ -28,6 +29,7 @@ type Option = config.Option
 type Response = response.Response
 type LogConfig = logx.Config
 type Logger = logx.Logger
+type Metrics = metrics.Metrics
 
 func New(options ...Option) *App { return app.New(options...) }
 
@@ -49,6 +51,8 @@ func LoadConfig(prefix string) (Config, error) { return config.LoadFromEnv(prefi
 
 func SetupLogger(cfg LogConfig) (func() error, error) { return logx.Setup(cfg) }
 
+func NewMetrics() *Metrics { return metrics.New() }
+
 func NewError(status int, code, message string) *APIError {
 	return apierrors.New(status, code, message)
 }