Coverage Summary for Class: BlockDifficultyRule (co.rsk.validators)

Class Class, % Method, % Line, %
BlockDifficultyRule 0% (0/1) 0% (0/4) 0% (0/13)


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 co.rsk.validators; 21  22 import co.rsk.core.BlockDifficulty; 23 import co.rsk.core.DifficultyCalculator; 24 import org.ethereum.core.Block; 25 import org.ethereum.core.BlockHeader; 26 import org.slf4j.Logger; 27 import org.slf4j.LoggerFactory; 28  29 /** 30  * Checks block's difficulty against calculated difficulty value 31  * 32  * @author Mikhail Kalinin 33  * @since 02.09.2015 34  */ 35 public class BlockDifficultyRule implements BlockParentDependantValidationRule, BlockHeaderParentDependantValidationRule { 36  37  private static final Logger logger = LoggerFactory.getLogger("blockvalidator"); 38  39  private final DifficultyCalculator difficultyCalculator; 40  41  public BlockDifficultyRule(DifficultyCalculator difficultyCalculator) { 42  this.difficultyCalculator = difficultyCalculator; 43  } 44  45  @Override 46  public boolean isValid(BlockHeader header, Block parent) { 47  if (header == null || parent == null) { 48  logger.warn("BlockDifficultyRule - block or parent are null"); 49  return false; 50  } 51  BlockDifficulty calcDifficulty = difficultyCalculator.calcDifficulty(header, parent.getHeader()); 52  BlockDifficulty difficulty = header.getDifficulty(); 53  54  if (!difficulty.equals(calcDifficulty)) { 55  logger.warn("#{}: difficulty != calcDifficulty", header.getNumber()); 56  return false; 57  } 58  return true; 59  } 60  61  @Override 62  public boolean isValid(Block block, Block parent) { 63  return isValid(block.getHeader(), parent); 64  } 65 }