Coverage Summary for Class: DifficultyRule (org.ethereum.validator)
Class |
Class, %
|
Method, %
|
Line, %
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DifficultyRule |
0%
(0/1)
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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 }