ipld-eth-server/pkg/history/header_validator.go
2019-02-14 16:03:57 +01:00

53 lines
1.8 KiB
Go

// VulcanizeDB
// Copyright © 2018 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package history
import (
"github.com/sirupsen/logrus"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore"
)
type HeaderValidator struct {
blockChain core.BlockChain
headerRepository datastore.HeaderRepository
windowSize int
}
func NewHeaderValidator(blockChain core.BlockChain, repository datastore.HeaderRepository, windowSize int) HeaderValidator {
return HeaderValidator{
blockChain: blockChain,
headerRepository: repository,
windowSize: windowSize,
}
}
func (validator HeaderValidator) ValidateHeaders() (ValidationWindow, error) {
window, err := MakeValidationWindow(validator.blockChain, validator.windowSize)
if err != nil {
logrus.Error("ValidateHeaders: error creating validation window: ", err)
return ValidationWindow{}, err
}
blockNumbers := MakeRange(window.LowerBound, window.UpperBound)
_, err = RetrieveAndUpdateHeaders(validator.blockChain, validator.headerRepository, blockNumbers)
if err != nil {
logrus.Error("ValidateHeaders: error getting/updating headers: ", err)
return ValidationWindow{}, err
}
return window, nil
}