[#57] services/object: Combine common service parameters

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/services/object/util/prm.go

@@ -0,0 +1,35 @@
+package util
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
+)
+
+type CommonPrm struct {
+	local bool
+}
+
+func (p *CommonPrm) WithLocalOnly(v bool) *CommonPrm {
+	if p != nil {
+		p.local = v
+	}
+
+	return p
+}
+
+func (p *CommonPrm) LocalOnly() bool {
+	if p != nil {
+		return p.local
+	}
+
+	return false
+}
+
+func CommonPrmFromV2(req interface {
+	GetMetaHeader() *session.RequestMetaHeader
+}) *CommonPrm {
+	meta := req.GetMetaHeader()
+
+	return &CommonPrm{
+		local: meta.GetTTL() <= 1, // FIXME: use constant
+	}
+}