package netmap import ( "fmt" "github.com/TrueCloudLab/frostfs-node/pkg/morph/client" "github.com/TrueCloudLab/frostfs-node/pkg/morph/event" "github.com/nspcc-dev/neo-go/pkg/core/state" "github.com/nspcc-dev/neo-go/pkg/util" ) // NewEpoch is a new epoch Neo:Morph event. type NewEpoch struct { num uint64 // txHash is used in notary environmental // for calculating unique but same for // all notification receivers values. txHash util.Uint256 } // MorphEvent implements Neo:Morph Event interface. func (NewEpoch) MorphEvent() {} // EpochNumber returns new epoch number. func (s NewEpoch) EpochNumber() uint64 { return s.num } // TxHash returns hash of the TX with new epoch // notification. func (s NewEpoch) TxHash() util.Uint256 { return s.txHash } // ParseNewEpoch is a parser of new epoch notification event. // // Result is type of NewEpoch. func ParseNewEpoch(e *state.ContainedNotificationEvent) (event.Event, 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 != 1 { return nil, event.WrongNumberOfParameters(1, ln) } prmEpochNum, err := client.IntFromStackItem(params[0]) if err != nil { return nil, fmt.Errorf("could not get integer epoch number: %w", err) } return NewEpoch{ num: uint64(prmEpochNum), txHash: e.Container, }, nil }