forked from TrueCloudLab/frostfs-node
99 lines
2.4 KiB
Go
99 lines
2.4 KiB
Go
package reputation
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import (
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/network/payload"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
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"github.com/nspcc-dev/neofs-sdk-go/reputation"
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)
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// Put structure of reputation.reputationPut notification from
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// morph chain.
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type Put struct {
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epoch uint64
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peerID reputation.PeerID
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value reputation.GlobalTrust
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// For notary notifications only.
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// Contains raw transactions of notary request.
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notaryRequest *payload.P2PNotaryRequest
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}
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const peerIDLength = 33 // compressed public key
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// MorphEvent implements Neo:Morph Event interface.
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func (Put) MorphEvent() {}
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// Epoch returns epoch value of reputation data.
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func (p Put) Epoch() uint64 {
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return p.epoch
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}
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// PeerID returns peer id of reputation data.
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func (p Put) PeerID() reputation.PeerID {
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return p.peerID
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}
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// Value returns reputation structure.
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func (p Put) Value() reputation.GlobalTrust {
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return p.value
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}
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// NotaryRequest returns raw notary request if notification
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// was received via notary service. Otherwise, returns nil.
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func (p Put) NotaryRequest() *payload.P2PNotaryRequest {
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return p.notaryRequest
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}
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// ParsePut from notification into reputation event structure.
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func ParsePut(e *state.ContainedNotificationEvent) (event.Event, error) {
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var (
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ev Put
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err error
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)
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params, err := event.ParseStackArray(e)
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if err != nil {
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return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
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}
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if ln := len(params); ln != 3 {
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return nil, event.WrongNumberOfParameters(3, ln)
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}
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// parse epoch number
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epoch, err := client.IntFromStackItem(params[0])
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if err != nil {
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return nil, fmt.Errorf("could not get integer epoch number: %w", err)
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}
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ev.epoch = uint64(epoch)
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// parse peer ID value
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peerID, err := client.BytesFromStackItem(params[1])
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if err != nil {
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return nil, fmt.Errorf("could not get peer ID value: %w", err)
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}
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if ln := len(peerID); ln != peerIDLength {
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return nil, fmt.Errorf("peer ID is %d byte long, expected %d", ln, peerIDLength)
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}
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ev.peerID.SetPublicKey(peerID)
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// parse global trust value
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rawValue, err := client.BytesFromStackItem(params[2])
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if err != nil {
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return nil, fmt.Errorf("could not get global trust value: %w", err)
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}
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err = ev.value.Unmarshal(rawValue)
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if err != nil {
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return nil, fmt.Errorf("could not parse global trust value: %w", err)
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}
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return ev, nil
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}
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