/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.validator;
import org.ethereum.core.BlockHeader;
import org.slf4j.Logger;
import java.util.LinkedList;
import java.util.List;
/**
* Parent class for {@link BlockHeader} validators
* which run depends on the header of another block
*
* @author Mikhail Kalinin
* @since 02.09.2015
*/
public abstract class DependentBlockHeaderRule extends AbstractValidationRule {
protected List<String> errors = new LinkedList<>();
public List<String> getErrors() {
return errors;
}
public void logErrors(Logger logger) {
if (logger.isErrorEnabled())
for (String msg : errors) {
logger.warn("{} invalid: {}", getEntityClass().getSimpleName(), msg);
}
}
@Override
public Class getEntityClass() {
return BlockHeader.class;
}
/**
* Runs header validation and returns its result
*
* @param header block's header
* @param dependency header of the dependency block
* @return true if validation passed, false otherwise
*/
abstract public boolean validate(BlockHeader header, BlockHeader dependency);
}