Coverage Summary for Class: BlockParentNumberRule (co.rsk.validators)
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Method, %
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Line, %
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BlockParentNumberRule |
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(0/1)
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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 org.ethereum.core.Block;
23 import org.ethereum.core.BlockHeader;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
26
27 /**
28 * Checks if {@link BlockHeader#number} == {@link BlockHeader#number} + 1 of parent's block
29 *
30 * @author Mikhail Kalinin
31 * @since 02.09.2015
32 */
33 public class BlockParentNumberRule implements BlockParentDependantValidationRule, BlockHeaderParentDependantValidationRule {
34
35 private static final Logger logger = LoggerFactory.getLogger("blockvalidator");
36
37 @Override
38 public boolean isValid(BlockHeader header, Block parent) {
39 if (header == null || parent == null) {
40 logger.warn("BlockParentNumberRule - block or parent are null");
41 return false;
42 }
43 BlockHeader parentHeader = parent.getHeader();
44 if (header.getNumber() != (parentHeader.getNumber() + 1)) {
45 logger.warn("#{}: block number is not parentBlock number + 1", header.getNumber());
46 return false;
47 }
48 return true;
49 }
50
51 @Override
52 public boolean isValid(Block block, Block parent) {
53 return isValid(block.getHeader(), parent);
54 }
55 }