Add Inner Ring code

pkg/morph/client/netmap/wrapper/update_state.go

@@ -0,0 +1,32 @@
+package wrapper
+
+import (
+	contract "github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap"
+	"github.com/pkg/errors"
+)
+
+// NodeState is a type of node states enumeration.
+type NodeState int64
+
+const (
+	_ NodeState = iota
+
+	// StateOffline is an offline node state value.
+	StateOffline
+)
+
+// UpdatePeerState changes peer status through Netmap contract
+// call.
+func (w *Wrapper) UpdatePeerState(key []byte, state NodeState) error {
+	args := contract.UpdateStateArgs{}
+	args.SetPublicKey(key)
+	args.SetState(int64(state))
+
+	// invoke smart contract call
+	//
+	// Note: errors.Wrap returns nil on nil error arg.
+	return errors.Wrap(
+		w.client.UpdateState(args),
+		"could not invoke smart contract",
+	)
+}