[#907] morph/event/container: Parse PutNamed event

Implement `ParsePutNamedNotary` function which parses `PutNamed` structure
from `event.NotaryEvent`. Share common code with `ParsePutNotary` function.

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

pkg/morph/event/container/put_notary.go

@@ -1,6 +1,9 @@
 package container
 
 import (
+	"fmt"
+
+	"github.com/nspcc-dev/neo-go/pkg/network/payload"
 	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/neofs-node/pkg/morph/event"
 )
@@ -42,34 +45,79 @@ const (
 	// in `Container` contract. Is used as identificator for notary
 	// put container requests.
 	PutNotaryEvent = "put"
+
+	// PutNotaryEvent is an ID of notary "put named container" notification.
+	PutNamedNotaryEvent = "putNamed"
 )
 
-// ParsePutNotary from NotaryEvent into container event structure.
-func ParsePutNotary(ne event.NotaryEvent) (event.Event, error) {
+func parsePutNotary(ev *Put, raw *payload.P2PNotaryRequest, ops []event.Op) error {
 	var (
-		ev        Put
 		currentOp opcode.Opcode
+		fieldNum  = 0
 	)
 
-	fieldNum := 0
-
-	for _, op := range ne.Params() {
+	for _, op := range ops {
 		currentOp = op.Code()
 
 		switch {
 		case opcode.PUSHDATA1 <= currentOp && currentOp <= opcode.PUSHDATA4:
 			if fieldNum == expectedItemNumPut {
-				return nil, event.UnexpectedArgNumErr(PutNotaryEvent)
+				return event.UnexpectedArgNumErr(PutNotaryEvent)
 			}
 
-			putFieldSetters[fieldNum](&ev, op.Param())
+			putFieldSetters[fieldNum](ev, op.Param())
 			fieldNum++
 		default:
-			return nil, event.UnexpectedOpcode(PutNotaryEvent, op.Code())
+			return event.UnexpectedOpcode(PutNotaryEvent, op.Code())
 		}
 	}
 
-	ev.notaryRequest = ne.Raw()
+	ev.notaryRequest = raw
+
+	return nil
+}
+
+// ParsePutNotary from NotaryEvent into container event structure.
+func ParsePutNotary(ne event.NotaryEvent) (event.Event, error) {
+	var ev Put
+
+	err := parsePutNotary(&ev, ne.Raw(), ne.Params())
+	if err != nil {
+		return nil, err
+	}
+
+	return ev, nil
+}
+
+// ParsePutNamedNotary parses PutNamed event structure from generic event.NotaryEvent.
+func ParsePutNamedNotary(ne event.NotaryEvent) (event.Event, error) {
+	ops := ne.Params()
+
+	const putNamedAdditionalArgs = 2 // PutNamed has same args as Put + (name, zone) (2)
+
+	if len(ops) != expectedItemNumPut+putNamedAdditionalArgs {
+		return nil, event.UnexpectedArgNumErr(PutNamedNotaryEvent)
+	}
+
+	var (
+		ev  PutNamed
+		err error
+	)
+
+	ev.zone, err = event.StringFromOpcode(ops[0])
+	if err != nil {
+		return nil, fmt.Errorf("parse arg zone: %w", err)
+	}
+
+	ev.name, err = event.StringFromOpcode(ops[1])
+	if err != nil {
+		return nil, fmt.Errorf("parse arg name: %w", err)
+	}
+
+	err = parsePutNotary(&ev.Put, ne.Raw(), ops[putNamedAdditionalArgs:])
+	if err != nil {
+		return nil, err
+	}
 
 	return ev, nil
 }