Add Inner Ring code

pkg/core/netmap/node/options.go

@@ -0,0 +1,46 @@
+package node
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/nspcc-dev/neofs-api-go/object"
+)
+
+const optionPrice = "/Price:"
+
+const optionCapacity = "/Capacity:"
+
+// Price parses node options and returns the price in 1e-8*GAS/Megabyte per month.
+//
+// User sets the price in GAS/Terabyte per month.
+func (i Info) Price() uint64 {
+	for j := range i.opts {
+		if strings.HasPrefix(i.opts[j], optionPrice) {
+			n, err := strconv.ParseFloat(i.opts[j][len(optionPrice):], 64)
+			if err != nil {
+				return 0
+			}
+
+			return uint64(n*1e8) / uint64(object.UnitsMB) // UnitsMB == megabytes in 1 terabyte
+		}
+	}
+
+	return 0
+}
+
+// Capacity parses node options and returns the capacity .
+func (i Info) Capacity() uint64 {
+	for j := range i.opts {
+		if strings.HasPrefix(i.opts[j], optionCapacity) {
+			n, err := strconv.ParseUint(i.opts[j][len(optionCapacity):], 10, 64)
+			if err != nil {
+				return 0
+			}
+
+			return n
+		}
+	}
+
+	return 0
+}