frostfs-node/cmd/neofs-node/reputation.go
Pavel Karpy 477682adb7 [#482] reputation/router: Move router to ./common
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2021-04-19 11:47:04 +03:00

458 lines
12 KiB
Go

package main
import (
"bytes"
"context"
"crypto/ecdsa"
"encoding/hex"
"github.com/nspcc-dev/hrw"
apiClient "github.com/nspcc-dev/neofs-api-go/pkg/client"
apiNetmap "github.com/nspcc-dev/neofs-api-go/pkg/netmap"
reputationapi "github.com/nspcc-dev/neofs-api-go/pkg/reputation"
v2reputation "github.com/nspcc-dev/neofs-api-go/v2/reputation"
v2reputationgrpc "github.com/nspcc-dev/neofs-api-go/v2/reputation/grpc"
crypto "github.com/nspcc-dev/neofs-crypto"
netmapcore "github.com/nspcc-dev/neofs-node/pkg/core/netmap"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
"github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
"github.com/nspcc-dev/neofs-node/pkg/network"
"github.com/nspcc-dev/neofs-node/pkg/network/cache"
grpcreputation "github.com/nspcc-dev/neofs-node/pkg/network/transport/reputation/grpc"
"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
reputationcommon "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common"
reputationrouter "github.com/nspcc-dev/neofs-node/pkg/services/reputation/common/router"
trustcontroller "github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/controller"
"github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/managers"
truststorage "github.com/nspcc-dev/neofs-node/pkg/services/reputation/local/storage"
reputationrpc "github.com/nspcc-dev/neofs-node/pkg/services/reputation/rpc"
"github.com/nspcc-dev/neofs-node/pkg/util/logger"
"github.com/pkg/errors"
"go.uber.org/zap"
)
type localTrustStorage struct {
log *logger.Logger
storage *truststorage.Storage
nmSrc netmapcore.Source
localKey []byte
}
type localTrustIterator struct {
ctx reputationcommon.Context
storage *localTrustStorage
epochStorage *truststorage.EpochTrustValueStorage
}
type managerBuilder struct {
log *logger.Logger
nmSrc netmapcore.Source
}
type remoteLocalTrustProvider struct {
localAddrSrc network.LocalAddressSource
deadEndProvider reputationcommon.WriterProvider
key *ecdsa.PrivateKey
clientCache interface {
Get(string) (apiClient.Client, error)
}
}
type nopReputationWriter struct{}
func (nopReputationWriter) Write(reputation.Trust) error {
return nil
}
func (nopReputationWriter) Close() error {
return nil
}
type remoteLocalTrustWriter struct {
ctx reputationcommon.Context
client apiClient.Client
key *ecdsa.PrivateKey
buf []*reputationapi.Trust
}
func (rtp *remoteLocalTrustWriter) Write(t reputation.Trust) error {
apiTrust := reputationapi.NewTrust()
apiPeer := reputationapi.NewPeerID()
apiPeer.SetPublicKey(t.Peer())
apiTrust.SetValue(t.Value().Float64())
apiTrust.SetPeer(apiPeer)
rtp.buf = append(rtp.buf, apiTrust)
return nil
}
func (rtp *remoteLocalTrustWriter) Close() error {
prm := apiClient.SendLocalTrustPrm{}
prm.SetEpoch(rtp.ctx.Epoch())
prm.SetTrusts(rtp.buf)
_, err := rtp.client.SendLocalTrust(
rtp.ctx,
prm,
apiClient.WithKey(rtp.key),
)
return err
}
type remoteLocalTrustWriterProvider struct {
client apiClient.Client
key *ecdsa.PrivateKey
}
type localTrustLogger struct {
ctx reputationcommon.Context
log *logger.Logger
}
func (l *localTrustLogger) Write(t reputation.Trust) error {
l.log.Info("received local trust",
zap.Uint64("epoch", l.ctx.Epoch()),
zap.String("peer", hex.EncodeToString(t.Peer().Bytes())),
zap.Stringer("value", t.Value()),
)
return nil
}
func (*localTrustLogger) Close() error {
return nil
}
func (rtwp *remoteLocalTrustWriterProvider) InitWriter(ctx reputationcommon.Context) (reputationcommon.Writer, error) {
return &remoteLocalTrustWriter{
ctx: ctx,
client: rtwp.client,
key: rtwp.key,
}, nil
}
func (rtp *remoteLocalTrustProvider) InitRemote(srv reputationrouter.ServerInfo) (reputationcommon.WriterProvider, error) {
if srv == nil {
return rtp.deadEndProvider, nil
}
addr := srv.Address()
if rtp.localAddrSrc.LocalAddress().String() == srv.Address() {
// if local => return no-op writer
return trustcontroller.SimpleWriterProvider(new(nopReputationWriter)), nil
}
ipAddr, err := network.IPAddrFromMultiaddr(addr)
if err != nil {
return nil, errors.Wrap(err, "could not convert address to IP format")
}
c, err := rtp.clientCache.Get(ipAddr)
if err != nil {
return nil, errors.Wrap(err, "could not initialize API client")
}
return &remoteLocalTrustWriterProvider{
client: c,
key: rtp.key,
}, nil
}
// BuildManagers sorts nodes in NetMap with HRW algorithms and
// takes the next node after the current one as the only manager.
func (mb *managerBuilder) BuildManagers(epoch uint64, p reputation.PeerID) ([]reputationrouter.ServerInfo, error) {
nm, err := mb.nmSrc.GetNetMapByEpoch(epoch)
if err != nil {
return nil, err
}
// make a copy to keep order consistency of the origin netmap after sorting
nodes := make([]*apiNetmap.Node, len(nm.Nodes))
copy(nodes, nm.Nodes)
hrw.SortSliceByValue(nodes, epoch)
for i := range nodes {
if bytes.Equal(nodes[i].PublicKey(), p.Bytes()) {
managerIndex := i + 1
if managerIndex == len(nodes) {
managerIndex = 0
}
return []reputationrouter.ServerInfo{nodes[managerIndex]}, nil
}
}
return nil, nil
}
func (s *localTrustStorage) 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 &localTrustIterator{
ctx: ctx,
storage: s,
epochStorage: epochStorage,
}, nil
}
func (s *localTrustStorage) InitWriter(ctx reputationcommon.Context) (reputationcommon.Writer, error) {
return &localTrustLogger{
ctx: ctx,
log: s.log,
}, nil
}
func (it *localTrustIterator) 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
}
}
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)
if err := h(trust); err != nil {
return err
}
}
return nil
}
func initReputationService(c *cfg) {
// consider sharing this between application components
nmSrc := newCachedNetmapStorage(c.cfgNetmap.state, c.cfgNetmap.wrapper)
c.cfgReputation.localTrustStorage = truststorage.New(truststorage.Prm{})
trustStorage := &localTrustStorage{
log: c.log,
storage: c.cfgReputation.localTrustStorage,
nmSrc: nmSrc,
localKey: crypto.MarshalPublicKey(&c.key.PublicKey),
}
managerBuilder := &managerBuilder{
log: c.log,
nmSrc: nmSrc,
}
routeBuilder := managers.New(managers.Prm{
ManagerBuilder: managerBuilder,
})
remoteLocalTrustProvider := &remoteLocalTrustProvider{
localAddrSrc: c,
deadEndProvider: trustStorage,
clientCache: cache.NewSDKClientCache(),
key: c.key,
}
router := reputationrouter.New(
reputationrouter.Prm{
LocalServerInfo: c,
RemoteWriterProvider: remoteLocalTrustProvider,
Builder: routeBuilder,
})
c.cfgReputation.localTrustCtrl = trustcontroller.New(trustcontroller.Prm{
LocalTrustSource: trustStorage,
LocalTrustTarget: router,
})
addNewEpochAsyncNotificationHandler(
c,
func(ev event.Event) {
var reportPrm trustcontroller.ReportPrm
// report collected values from previous epoch
reportPrm.SetEpoch(ev.(netmap.NewEpoch).EpochNumber() - 1)
c.cfgReputation.localTrustCtrl.Report(reportPrm)
},
)
v2reputationgrpc.RegisterReputationServiceServer(c.cfgGRPC.server,
grpcreputation.New(
reputationrpc.NewSignService(
c.key,
reputationrpc.NewResponseService(
&reputationServer{
cfg: c,
log: c.log,
router: router,
routeBuilder: routeBuilder,
},
c.respSvc,
),
),
),
)
// initialize eigen trust block timer
durationMeter := NewEigenTrustDuration(c.cfgNetmap.wrapper)
newEigenTrustIterTimer(c, durationMeter, func() {
c.log.Debug("todo: start next EigenTrust iteration round")
})
addNewEpochAsyncNotificationHandler(
c,
func(e event.Event) {
durationMeter.Update() // recalculate duration of one iteration round
err := c.cfgMorph.eigenTrustTimer.Reset() // start iteration rounds again
if err != nil {
c.log.Warn("can't reset block timer to start eigen trust calculations again",
zap.String("error", err.Error()))
}
},
)
}
type reputationServer struct {
*cfg
log *logger.Logger
router reputationcommon.WriterProvider
routeBuilder reputationrouter.Builder
}
type epochContext struct {
context.Context
epoch uint64
}
func (ctx *epochContext) Epoch() uint64 {
return ctx.epoch
}
type reputationOnlyKeyRemoteServerInfo struct {
key []byte
}
func (i *reputationOnlyKeyRemoteServerInfo) PublicKey() []byte {
return i.key
}
func (*reputationOnlyKeyRemoteServerInfo) Address() string {
return ""
}
func (s *reputationServer) SendLocalTrust(ctx context.Context, req *v2reputation.SendLocalTrustRequest) (*v2reputation.SendLocalTrustResponse, error) {
var passedRoute []reputationrouter.ServerInfo
for hdr := req.GetVerificationHeader(); hdr != nil; hdr = hdr.GetOrigin() {
passedRoute = append(passedRoute, &reputationOnlyKeyRemoteServerInfo{
key: hdr.GetBodySignature().GetKey(),
})
}
for left, right := 0, len(passedRoute)-1; left < right; left, right = left+1, right-1 {
passedRoute[left], passedRoute[right] = passedRoute[right], passedRoute[left]
}
passedRoute = append(passedRoute, s)
body := req.GetBody()
eCtx := &epochContext{
Context: ctx,
epoch: body.GetEpoch(),
}
w, err := s.router.InitWriter(reputationrouter.NewRouteContext(eCtx, passedRoute))
if err != nil {
return nil, errors.Wrap(err, "could not initialize local trust writer")
}
for _, trust := range body.GetTrusts() {
err = s.processTrust(body.GetEpoch(), apiToLocalTrust(trust, passedRoute[0].PublicKey()), passedRoute, w)
if err != nil {
return nil, errors.Wrap(err, "could not write one of trusts")
}
}
resp := new(v2reputation.SendLocalTrustResponse)
resp.SetBody(new(v2reputation.SendLocalTrustResponseBody))
return resp, nil
}
func (s *reputationServer) SendIntermediateResult(_ context.Context, req *v2reputation.SendIntermediateResultRequest) (*v2reputation.SendIntermediateResultResponse, error) {
resp := new(v2reputation.SendIntermediateResultResponse)
// todo: implement me
return resp, nil
}
// apiToLocalTrust converts v2 Trust to local reputation.Trust, adding trustingPeer.
func apiToLocalTrust(t *v2reputation.Trust, trustingPeer []byte) reputation.Trust {
localTrust := reputation.Trust{}
localTrust.SetValue(reputation.TrustValueFromFloat64(t.GetValue()))
localTrust.SetPeer(reputation.PeerIDFromBytes(t.GetPeer().GetValue()))
localTrust.SetTrustingPeer(reputation.PeerIDFromBytes(trustingPeer))
return localTrust
}
func (s *reputationServer) processTrust(epoch uint64, t reputation.Trust,
passedRoute []reputationrouter.ServerInfo, w reputationcommon.Writer) error {
err := reputationrouter.CheckRoute(s.routeBuilder, epoch, t, passedRoute)
if err != nil {
return errors.Wrap(err, "wrong route of reputation trust value")
}
return w.Write(t)
}