feat: dynamic buffer time

pkg/util/range.go

@@ -0,0 +1,37 @@
+package util
+
+import (
+	"gopkg.in/yaml.v3"
+	"strconv"
+	"strings"
+)
+
+type Range[T ~int | ~int8 | ~int16 | ~int32 | ~int64 |
+	~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr] [2]T
+
+func (r *Range[T]) Size() T {
+	return r[1] - r[0]
+}
+
+func (r *Range[T]) Within(x T) bool {
+	return x >= r[0] && x <= r[1]
+}
+
+func (r *Range[T]) Valid() bool {
+	return r.Size() >= 0
+}
+
+func (r *Range[T]) UnmarshalYAML(value *yaml.Node) error {
+	ss := strings.Split(value.Value, "-")
+	i64, err := strconv.ParseInt(ss[0], 10, 0)
+	if err != nil {
+		return err
+	}
+	r[0] = T(i64)
+	i64, err = strconv.ParseInt(ss[1], 10, 0)
+	if err != nil {
+		return err
+	}
+	r[1] = T(i64)
+	return nil
+}