forked from TrueCloudLab/frostfs-node
93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package local
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
|
|
netmapcore "github.com/nspcc-dev/neofs-node/pkg/core/netmap"
|
|
"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
|
|
reputationcommon "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common"
|
|
trustcontroller "github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/controller"
|
|
truststorage "github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/storage"
|
|
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
|
|
)
|
|
|
|
type TrustStorage struct {
|
|
Log *logger.Logger
|
|
|
|
Storage *truststorage.Storage
|
|
|
|
NmSrc netmapcore.Source
|
|
|
|
LocalKey []byte
|
|
}
|
|
|
|
func (s *TrustStorage) InitIterator(ctx reputationcommon.Context) (trustcontroller.Iterator, error) {
|
|
epochStorage, err := s.Storage.DataForEpoch(ctx.Epoch())
|
|
if err != nil && !errors.Is(err, truststorage.ErrNoPositiveTrust) {
|
|
return nil, err
|
|
}
|
|
|
|
return &TrustIterator{
|
|
ctx: ctx,
|
|
storage: s,
|
|
epochStorage: epochStorage,
|
|
}, nil
|
|
}
|
|
|
|
type TrustIterator struct {
|
|
ctx reputationcommon.Context
|
|
|
|
storage *TrustStorage
|
|
|
|
epochStorage *truststorage.EpochTrustValueStorage
|
|
}
|
|
|
|
func (it *TrustIterator) Iterate(h reputation.TrustHandler) error {
|
|
if it.epochStorage != nil {
|
|
err := it.epochStorage.Iterate(h)
|
|
if !errors.Is(err, truststorage.ErrNoPositiveTrust) {
|
|
return err
|
|
}
|
|
}
|
|
|
|
nm, err := it.storage.NmSrc.GetNetMapByEpoch(it.ctx.Epoch())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// find out if local node is presented in netmap
|
|
localIndex := -1
|
|
|
|
for i := range nm.Nodes {
|
|
if bytes.Equal(nm.Nodes[i].PublicKey(), it.storage.LocalKey) {
|
|
localIndex = i
|
|
break
|
|
}
|
|
}
|
|
|
|
ln := len(nm.Nodes)
|
|
if localIndex >= 0 && ln > 0 {
|
|
ln--
|
|
}
|
|
|
|
// calculate Pj http://ilpubs.stanford.edu:8090/562/1/2002-56.pdf Chapter 4.5.
|
|
p := reputation.TrustOne.Div(reputation.TrustValueFromInt(ln))
|
|
|
|
for i := range nm.Nodes {
|
|
if i == localIndex {
|
|
continue
|
|
}
|
|
|
|
trust := reputation.Trust{}
|
|
trust.SetPeer(reputation.PeerIDFromBytes(nm.Nodes[i].PublicKey()))
|
|
trust.SetValue(p)
|
|
trust.SetTrustingPeer(reputation.PeerIDFromBytes(it.storage.LocalKey))
|
|
|
|
if err := h(trust); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|