Coverage Summary for Class: DifficultyRule (org.ethereum.validator)

Class Class, % Method, % Line, %
DifficultyRule 0% (0/1) 0% (0/3) 0% (0/9)


1 /* 2  * This file is part of RskJ 3  * Copyright (C) 2017 RSK Labs Ltd. 4  * (derived from ethereumJ library, Copyright (c) 2016 <ether.camp>) 5  * 6  * This program is free software: you can redistribute it and/or modify 7  * it under the terms of the GNU Lesser General Public License as published by 8  * the Free Software Foundation, either version 3 of the License, or 9  * (at your option) any later version. 10  * 11  * This program is distributed in the hope that it will be useful, 12  * but WITHOUT ANY WARRANTY; without even the implied warranty of 13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14  * GNU Lesser General Public License for more details. 15  * 16  * You should have received a copy of the GNU Lesser General Public License 17  * along with this program. If not, see <http://www.gnu.org/licenses/>. 18  */ 19  20 package org.ethereum.validator; 21  22 import co.rsk.core.BlockDifficulty; 23 import co.rsk.core.DifficultyCalculator; 24 import org.ethereum.core.BlockHeader; 25 import org.slf4j.Logger; 26 import org.slf4j.LoggerFactory; 27  28 /** 29  * Checks block's difficulty against calculated difficulty value 30  * 31  * @author Mikhail Kalinin 32  * @since 02.09.2015 33  */ 34 public class DifficultyRule extends DependentBlockHeaderRule { 35  36  private static final Logger logger = LoggerFactory.getLogger(DifficultyRule.class); 37  38  private final DifficultyCalculator difficultyCalculator; 39  40  public DifficultyRule(DifficultyCalculator difficultyCalculator) { 41  this.difficultyCalculator = difficultyCalculator; 42  } 43  44  @Override 45  public boolean validate(BlockHeader header, BlockHeader parent) { 46  BlockDifficulty calcDifficulty = difficultyCalculator.calcDifficulty(header, parent); 47  BlockDifficulty difficulty = header.getDifficulty(); 48  49  if (!difficulty.equals(calcDifficulty)) { 50  logger.error("#{}: difficulty != calcDifficulty", header.getNumber()); 51  return false; 52  } 53  return true; 54  } 55 }