[#114] Add remove-node IR control command

Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>

pkg/morph/client/netmap/peer.go

@@ -0,0 +1,59 @@
+package netmap
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+)
+
+// AddPeerPrm groups parameters of AddPeer operation.
+type AddPeerPrm struct {
+	nodeInfo netmap.NodeInfo
+
+	client.InvokePrmOptional
+}
+
+// SetNodeInfo sets new peer NodeInfo.
+func (a *AddPeerPrm) SetNodeInfo(nodeInfo netmap.NodeInfo) {
+	a.nodeInfo = nodeInfo
+}
+
+// AddPeer registers peer in FrostFS network through
+// Netmap contract call.
+func (c *Client) AddPeer(p AddPeerPrm) error {
+	var method = addPeerMethod
+
+	if c.client.WithNotary() && c.client.IsAlpha() {
+		// In notary environments Alphabet must calls AddPeerIR method instead of AddPeer.
+		// It differs from AddPeer only by name, so we can do this in the same form.
+		// See https://github.com/nspcc-dev/frostfs-contract/issues/154.
+		method += "IR"
+	}
+
+	prm := client.InvokePrm{}
+	prm.SetMethod(method)
+	prm.SetArgs(p.nodeInfo.Marshal())
+	prm.InvokePrmOptional = p.InvokePrmOptional
+
+	if err := c.client.Invoke(prm); err != nil {
+		return fmt.Errorf("could not invoke method (%s): %w", method, err)
+	}
+	return nil
+}
+
+// ForceRemovePeer marks the given peer as offline via a notary control transaction.
+func (c *Client) ForceRemovePeer(nodeInfo netmap.NodeInfo) error {
+	if !c.client.WithNotary() {
+		return fmt.Errorf("peer can be forcefully removed only in notary environment")
+	}
+
+	prm := UpdatePeerPrm{}
+	prm.SetKey(nodeInfo.PublicKey())
+	prm.SetControlTX(true)
+
+	if err := c.UpdatePeerState(prm); err != nil {
+		return fmt.Errorf("updating peer state: %v", err)
+	}
+	return nil
+}