frostfs-node/pkg/morph/event/container/delete.go
Pavel Karpy c167ae26f9 [#971] morph/event: Change notification parser's signature
Parsers should have original notification
structure to be able to construct internal
event structure that contains necessary
for unique nonce calculation information.
So notification parsers take raw notification
structure instead of slice of stack items.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2021-11-19 09:58:03 +03:00

84 lines
2.2 KiB
Go

package container
import (
"fmt"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result/subscriptions"
"github.com/nspcc-dev/neo-go/pkg/network/payload"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
)
// Delete structure of container.Delete notification from morph chain.
type Delete struct {
containerID []byte
signature []byte
token []byte
// For notary notifications only.
// Contains raw transactions of notary request.
notaryRequest *payload.P2PNotaryRequest
}
// MorphEvent implements Neo:Morph Event interface.
func (Delete) MorphEvent() {}
// ContainerID is a marshalled container structure, defined in API.
func (d Delete) ContainerID() []byte { return d.containerID }
// Signature of marshalled container by container owner.
func (d Delete) Signature() []byte { return d.signature }
// SessionToken returns binary token of the session
// within which the eACL was set.
func (d Delete) SessionToken() []byte {
return d.token
}
// NotaryRequest returns raw notary request if notification
// was received via notary service. Otherwise, returns nil.
func (d Delete) NotaryRequest() *payload.P2PNotaryRequest {
return d.notaryRequest
}
const expectedItemNumDelete = 3
// ParseDelete from notification into container event structure.
//
// Expects 3 stack items.
func ParseDelete(e *subscriptions.NotificationEvent) (event.Event, error) {
var (
ev Delete
err error
)
params, err := event.ParseStackArray(e)
if err != nil {
return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
}
if ln := len(params); ln != expectedItemNumDelete {
return nil, event.WrongNumberOfParameters(expectedItemNumDelete, ln)
}
// parse container
ev.containerID, err = client.BytesFromStackItem(params[0])
if err != nil {
return nil, fmt.Errorf("could not get container: %w", err)
}
// parse signature
ev.signature, err = client.BytesFromStackItem(params[1])
if err != nil {
return nil, fmt.Errorf("could not get signature: %w", err)
}
// parse session token
ev.token, err = client.BytesFromStackItem(params[2])
if err != nil {
return nil, fmt.Errorf("could not get session token: %w", err)
}
return ev, nil
}