Coverage Summary for Class: MnrModuleImpl (co.rsk.rpc.modules.mnr)
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Method, %
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Line, %
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MnrModuleImpl |
0%
(0/1)
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(0/10)
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(0/48)
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1 /*
2 * This file is part of RskJ
3 * Copyright (C) 2018 RSK Labs Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package co.rsk.rpc.modules.mnr;
20
21 import co.rsk.bitcoinj.core.BtcBlock;
22 import co.rsk.bitcoinj.core.BtcTransaction;
23 import co.rsk.bitcoinj.core.Context;
24 import co.rsk.bitcoinj.core.NetworkParameters;
25 import co.rsk.bitcoinj.params.RegTestParams;
26 import co.rsk.config.RskMiningConstants;
27 import co.rsk.mine.MinerServer;
28 import co.rsk.mine.MinerWork;
29 import co.rsk.mine.SubmitBlockResult;
30 import co.rsk.mine.SubmittedBlockInfo;
31 import co.rsk.rpc.exception.JsonRpcSubmitBlockException;
32 import co.rsk.util.ListArrayUtil;
33 import org.bouncycastle.util.encoders.Hex;
34 import org.ethereum.crypto.Keccak256Helper;
35 import org.ethereum.rpc.TypeConverter;
36 import org.slf4j.Logger;
37 import org.slf4j.LoggerFactory;
38
39 import java.util.Arrays;
40 import java.util.Collections;
41 import java.util.List;
42
43 public class MnrModuleImpl implements MnrModule {
44 private static final Logger logger = LoggerFactory.getLogger("web3");
45
46 private final MinerServer minerServer;
47
48 public MnrModuleImpl(MinerServer minerServer) {
49 this.minerServer = minerServer;
50 }
51
52 @Override
53 public MinerWork getWork() {
54 logger.debug("getWork()");
55 return minerServer.getWork();
56 }
57
58 @Override
59 public SubmittedBlockInfo submitBitcoinBlock(String bitcoinBlockHex) {
60 logger.debug("submitBitcoinBlock(): {}", bitcoinBlockHex.length());
61
62 NetworkParameters params = RegTestParams.get();
63 new Context(params);
64
65 BtcBlock bitcoinBlock = getBtcBlock(bitcoinBlockHex, params);
66 BtcTransaction coinbase = bitcoinBlock.getTransactions().get(0);
67
68 String blockHashForMergedMining = extractBlockHashForMergedMining(coinbase);
69
70 SubmitBlockResult result = minerServer.submitBitcoinBlock(blockHashForMergedMining, bitcoinBlock);
71
72 return parseResultAndReturn(result);
73 }
74
75 @Override
76 public SubmittedBlockInfo submitBitcoinBlockTransactions(String blockHashHex, String blockHeaderHex, String coinbaseHex, String txnHashesHex) {
77 logger.debug("submitBitcoinBlockTransactions(): {}, {}, {}, {}", blockHashHex, blockHeaderHex, coinbaseHex, txnHashesHex);
78
79 NetworkParameters params = RegTestParams.get();
80 new Context(params);
81
82 BtcBlock bitcoinBlockWithHeaderOnly = getBtcBlock(blockHeaderHex, params);
83 BtcTransaction coinbase = new BtcTransaction(params, Hex.decode(coinbaseHex));
84
85 String blockHashForMergedMining = extractBlockHashForMergedMining(coinbase);
86
87 List<String> txnHashes = parseHashes(txnHashesHex);
88
89 SubmitBlockResult result = minerServer.submitBitcoinBlockTransactions(blockHashForMergedMining, bitcoinBlockWithHeaderOnly, coinbase, txnHashes);
90
91 return parseResultAndReturn(result);
92 }
93
94 @Override
95 public SubmittedBlockInfo submitBitcoinBlockPartialMerkle(String blockHashHex, String blockHeaderHex, String coinbaseHex, String merkleHashesHex, String blockTxnCountHex) {
96 logger.debug("submitBitcoinBlockPartialMerkle(): {}, {}, {}, {}, {}", blockHashHex, blockHeaderHex, coinbaseHex, merkleHashesHex, blockTxnCountHex);
97
98 if (merkleHashesHex.isEmpty()) {
99 throw new JsonRpcSubmitBlockException("The list of merkle hashes can't be empty");
100 }
101
102 NetworkParameters params = RegTestParams.get();
103 new Context(params);
104
105 BtcBlock bitcoinBlockWithHeaderOnly = getBtcBlock(blockHeaderHex, params);
106 BtcTransaction coinbase = new BtcTransaction(params, Hex.decode(coinbaseHex));
107
108 String blockHashForMergedMining = extractBlockHashForMergedMining(coinbase);
109
110 List<String> merkleHashes = parseHashes(merkleHashesHex);
111
112 int txnCount = Integer.parseInt(blockTxnCountHex, 16);
113
114 SubmitBlockResult result = minerServer.submitBitcoinBlockPartialMerkle(blockHashForMergedMining, bitcoinBlockWithHeaderOnly, coinbase, merkleHashes, txnCount);
115
116 return parseResultAndReturn(result);
117 }
118
119 private BtcBlock getBtcBlock(String blockHeaderHex, NetworkParameters params) {
120 byte[] bitcoinBlockByteArray = Hex.decode(blockHeaderHex);
121 return params.getDefaultSerializer().makeBlock(bitcoinBlockByteArray);
122 }
123
124 private String extractBlockHashForMergedMining(BtcTransaction coinbase) {
125 byte[] coinbaseAsByteArray = coinbase.bitcoinSerialize();
126 List<Byte> coinbaseAsByteList = ListArrayUtil.asByteList(coinbaseAsByteArray);
127
128 List<Byte> rskTagAsByteList = ListArrayUtil.asByteList(RskMiningConstants.RSK_TAG);
129
130 int rskTagPosition = Collections.lastIndexOfSubList(coinbaseAsByteList, rskTagAsByteList);
131 byte[] blockHashForMergedMiningArray = new byte[Keccak256Helper.Size.S256.getValue() / 8];
132 System.arraycopy(coinbaseAsByteArray, rskTagPosition + RskMiningConstants.RSK_TAG.length, blockHashForMergedMiningArray, 0, blockHashForMergedMiningArray.length);
133 return TypeConverter.toJsonHex(blockHashForMergedMiningArray);
134 }
135
136 private List<String> parseHashes(String txnHashesHex) {
137 String[] split = txnHashesHex.split("\\s+");
138 return Arrays.asList(split);
139 }
140
141 private SubmittedBlockInfo parseResultAndReturn(SubmitBlockResult result) {
142 if ("OK".equals(result.getStatus())) {
143 return result.getBlockInfo();
144 } else {
145 throw new JsonRpcSubmitBlockException(result.getMessage());
146 }
147 }
148 }