一些代码优化方式

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https://github.com/grpc/grpc-go/pull/7525

https://github.com/open-telemetry/opentelemetry-go/blob/metric/v1.28.0/metric/instrument.go#L349-L368

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// WithAttributes converts attributes into an attribute Set and sets the Set to
// be associated with a measurement. This is shorthand for:
//
//	cp := make([]attribute.KeyValue, len(attributes))
//	copy(cp, attributes)
//	WithAttributes(attribute.NewSet(cp...))
//
// [attribute.NewSet] may modify the passed attributes so this will make a copy
// of attributes before creating a set in order to ensure this function is
// concurrent safe. This makes this option function less optimized in
// comparison to [WithAttributeSet]. Therefore, [WithAttributeSet] should be
// preferred for performance sensitive code.
//
// See [WithAttributeSet] for information about how multiple WithAttributes are
// merged.
func WithAttributes(attributes ...attribute.KeyValue) MeasurementOption {
	cp := make([]attribute.KeyValue, len(attributes))
	copy(cp, attributes)
	return attrOpt{set: attribute.NewSet(cp...)}
}

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