Coverage Summary for Class: AutoMinerClient (co.rsk.mine)
Class |
Class, %
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Method, %
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Line, %
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AutoMinerClient |
0%
(0/1)
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0%
(0/7)
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0%
(0/28)
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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.mine;
20
21 import co.rsk.bitcoinj.core.BtcBlock;
22 import org.ethereum.rpc.TypeConverter;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
25
26 import java.math.BigInteger;
27
28 /**
29 * MinerClient for automine setting
30 */
31 public class AutoMinerClient implements MinerClient {
32 private static final Logger logger = LoggerFactory.getLogger("minerClient");
33
34 private final MinerServer minerServer;
35
36 private volatile boolean stop = false;
37 private volatile boolean isMining = false;
38
39 public AutoMinerClient(MinerServer minerServer) {
40 this.minerServer = minerServer;
41 }
42
43 @Override
44 public void start() {
45 isMining = true;
46 }
47
48 @Override
49 public boolean isMining() {
50 return this.isMining;
51 }
52
53 @Override
54 public boolean mineBlock() {
55 // if miner server was stopped for some reason, we don't mine.
56 if (stop) {
57 return false;
58 }
59
60 MinerWork work = minerServer.getWork();
61
62 co.rsk.bitcoinj.core.NetworkParameters bitcoinNetworkParameters = co.rsk.bitcoinj.params.RegTestParams.get();
63 co.rsk.bitcoinj.core.BtcTransaction bitcoinMergedMiningCoinbaseTransaction = MinerUtils.getBitcoinMergedMiningCoinbaseTransaction(bitcoinNetworkParameters, work);
64 co.rsk.bitcoinj.core.BtcBlock bitcoinMergedMiningBlock = MinerUtils.getBitcoinMergedMiningBlock(bitcoinNetworkParameters, bitcoinMergedMiningCoinbaseTransaction);
65
66 BigInteger target = new BigInteger(1, TypeConverter.stringHexToByteArray(work.getTarget()));
67 findNonce(bitcoinMergedMiningBlock, target);
68
69 logger.info("Mined block: {}", work.getBlockHashForMergedMining());
70 minerServer.submitBitcoinBlock(work.getBlockHashForMergedMining(), bitcoinMergedMiningBlock);
71
72 return true;
73 }
74
75 @Override
76 public void stop() {
77 stop = true;
78 isMining = false;
79 }
80
81 /**
82 * Find a valid nonce for bitcoinMergedMiningBlock, that satisfies the given target difficulty.
83 */
84 private void findNonce(
85 BtcBlock bitcoinMergedMiningBlock,
86 BigInteger target) {
87 long nextNonceToUse = 0;
88 bitcoinMergedMiningBlock.setNonce(nextNonceToUse++);
89
90 while (true) {
91 // Is our proof of work valid yet?
92 BigInteger blockHashBI = bitcoinMergedMiningBlock.getHash().toBigInteger();
93 if (blockHashBI.compareTo(target) <= 0) {
94 return;
95 }
96 // No, so increment the nonce and try again.
97 bitcoinMergedMiningBlock.setNonce(nextNonceToUse++);
98 if (bitcoinMergedMiningBlock.getNonce() % 100000 == 0) {
99 logger.debug("Solving block. Nonce: {}", bitcoinMergedMiningBlock.getNonce());
100 }
101 }
102 }
103 }