frostfs-node/pkg/services/reputation/common/router/util.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

39 lines
810 B
Go

package router
import (
"bytes"
"errors"
"github.com/nspcc-dev/neofs-node/pkg/services/reputation"
)
var errWrongRoute = errors.New("wrong route")
// CheckRoute checks if the route is a route correctly constructed by the builder for value a.
//
// Returns nil if route is correct, otherwise an error clarifying the inconsistency.
func CheckRoute(builder Builder, epoch uint64, t reputation.Trust, route []ServerInfo) error {
for i := 1; i < len(route); i++ {
servers, err := builder.NextStage(epoch, t, route[:i])
if err != nil {
return err
} else if len(servers) == 0 {
break
}
found := false
for j := range servers {
if bytes.Equal(servers[j].PublicKey(), route[i].PublicKey()) {
found = true
break
}
}
if !found {
return errWrongRoute
}
}
return nil
}