package loadroute import ( "bytes" "errors" "github.com/TrueCloudLab/frostfs-sdk-go/container" ) 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, a container.SizeEstimation, route []ServerInfo) error { for i := 1; i < len(route); i++ { servers, err := builder.NextStage(a, route[:i]) if err != nil { return err } else if len(servers) == 0 { break } found := false for j := range servers { if servers[j] == nil { // nil route point means that // (i-1)-th node in the route // must, among other things, // save the announcement to its // local memory continue } if bytes.Equal(servers[j].PublicKey(), route[i].PublicKey()) { found = true break } } if !found { return errWrongRoute } } return nil }