Examples with Constants org.ethereum.config.Constants used on opensource projects

Example 1 with Constants

use of org.ethereum.config.Constants in project rskj by rsksmart.

the class BlockchainLoaderTest method testLoadBlockchainEmptyBlockchain.

@Test
public void testLoadBlockchainEmptyBlockchain() throws IOException {
    String jsonFile = "blockchain_loader_genesis.json";
    RskSystemProperties systemProperties = Mockito.mock(RskSystemProperties.class);
    Constants constants = Mockito.mock(Constants.class);
    Mockito.when(constants.getInitialNonce()).thenReturn(BigInteger.ZERO);
    BlockchainNetConfig blockchainNetConfig = Mockito.mock(BlockchainNetConfig.class);
    Mockito.when(blockchainNetConfig.getCommonConstants()).thenReturn(constants);
    Mockito.when(systemProperties.databaseDir()).thenReturn(new RskSystemProperties().databaseDir());
    Mockito.when(systemProperties.getBlockchainConfig()).thenReturn(blockchainNetConfig);
    Mockito.when(systemProperties.genesisInfo()).thenReturn(jsonFile);
    BlockStore blockStore = Mockito.mock(BlockStore.class);
    Mockito.when(blockStore.getBestBlock()).thenReturn(null);
    EthereumListener ethereumListener = Mockito.mock(EthereumListener.class);
    Repository repository = new RepositoryImpl(systemProperties, new TrieStoreImpl(new HashMapDB().setClearOnClose(false)));
    ;
    BlockChainLoader blockChainLoader = new BlockChainLoader(systemProperties, repository, blockStore, null, null, ethereumListener, null, null);
    blockChainLoader.loadBlockchain();
    Assert.assertEquals(5, repository.getAccountsKeys().size());
    Assert.assertEquals(Coin.valueOf(2000), repository.getBalance(new RskAddress("dabadabadabadabadabadabadabadabadaba0001")));
    Assert.assertEquals(BigInteger.valueOf(24), repository.getNonce(new RskAddress("dabadabadabadabadabadabadabadabadaba0001")));
    Assert.assertEquals(Coin.valueOf(1000), repository.getBalance(new RskAddress("dabadabadabadabadabadabadabadabadaba0002")));
    Assert.assertEquals(BigInteger.ZERO, repository.getNonce(new RskAddress("dabadabadabadabadabadabadabadabadaba0002")));
    Assert.assertEquals(Coin.valueOf(10), repository.getBalance(new RskAddress("77045e71a7a2c50903d88e564cd72fab11e82051")));
    Assert.assertEquals(BigInteger.valueOf(25), repository.getNonce(new RskAddress("77045e71a7a2c50903d88e564cd72fab11e82051")));
    Assert.assertEquals(DataWord.ONE, repository.getContractDetails(new RskAddress("77045e71a7a2c50903d88e564cd72fab11e82051")).get(DataWord.ZERO));
    Assert.assertEquals(new DataWord(3), repository.getContractDetails(new RskAddress("77045e71a7a2c50903d88e564cd72fab11e82051")).get(DataWord.ONE));
    Assert.assertEquals(274, repository.getContractDetails(new RskAddress("77045e71a7a2c50903d88e564cd72fab11e82051")).getCode().length);
}

Example 2 with Constants

use of org.ethereum.config.Constants in project rskj by rsksmart.

the class MainNetMinerTest method generateFallbackMinedBlock.

@Test
public void generateFallbackMinedBlock() throws InterruptedException, IOException {
    // generate private keys for testing now.
    ECKey privateMiningKey0 = ECKey.fromPrivate(BigInteger.TEN);
    ECKey privateMiningKey1 = ECKey.fromPrivate(BigInteger.TEN.add(BigInteger.ONE));
    byte[] privKey0 = privateMiningKey0.getPrivKeyBytes();
    saveToFile(privKey0, new File(folder.getRoot().getCanonicalPath(), "privkey0.bin"));
    byte[] privKey1 = privateMiningKey1.getPrivKeyBytes();
    saveToFile(privKey1, new File(folder.getRoot().getCanonicalPath(), "privkey1.bin"));
    RskSystemProperties tempConfig = new RskSystemProperties() {

        BlockchainNetConfig blockchainNetConfig = config.getBlockchainConfig();

        @Override
        public String fallbackMiningKeysDir() {
            try {
                return folder.getRoot().getCanonicalPath();
            } catch (Exception e) {
            }
            return null;
        }

        @Override
        public BlockchainNetConfig getBlockchainConfig() {
            return new BlockchainNetConfig() {

                @Override
                public BlockchainConfig getConfigForBlock(long blockNumber) {
                    return blockchainNetConfig.getConfigForBlock(blockNumber);
                }

                @Override
                public Constants getCommonConstants() {
                    return new Constants() {

                        @Override
                        public byte[] getFallbackMiningPubKey0() {
                            return privateMiningKey0.getPubKey();
                        }

                        @Override
                        public byte[] getFallbackMiningPubKey1() {
                            return privateMiningKey1.getPubKey();
                        }
                    };
                }
            };
        }
    };
    EthereumImpl ethereumImpl = Mockito.mock(EthereumImpl.class);
    Mockito.when(ethereumImpl.addNewMinedBlock(Mockito.any())).thenReturn(ImportResult.IMPORTED_BEST);
    MinerServer minerServer = new MinerServerImpl(tempConfig, ethereumImpl, blockchain, null, DIFFICULTY_CALCULATOR, new ProofOfWorkRule(tempConfig).setFallbackMiningEnabled(true), blockToMineBuilder(), ConfigUtils.getDefaultMiningConfig());
    try {
        minerServer.setFallbackMining(true);
        // Accelerate mining
        ((MinerServerImpl) minerServer).setSecsBetweenFallbackMinedBlocks(1);
        minerServer.start();
        // Blocks are generated auomatically
        // but we can call minerServer.generateFallbackBlock() to generate it manually
        // boolean result = minerServer.generateFallbackBlock();
        // Assert.assertTrue(result);
        long start = System.currentTimeMillis();
        while (((MinerServerImpl) minerServer).getFallbackBlocksGenerated() == 0) {
            if (System.currentTimeMillis() - start > 20 * 1000) {
                Assert.assertTrue(false);
            }
            // 
            Thread.sleep(1000);
        }
        Mockito.verify(ethereumImpl, Mockito.times(1)).addNewMinedBlock(Mockito.any());
        // mine another
        // NOTE that is NOT using the next block (parity change) because of the blockchain mockito
        // to mine a subsequent block, use a real blockchain, not the mockito.
        minerServer.buildBlockToMine(blockchain.getBestBlock(), false);
        // result = minerServer.generateFallbackBlock();
        // Assert.assertTrue(result);
        start = System.currentTimeMillis();
        while (((MinerServerImpl) minerServer).getFallbackBlocksGenerated() == 1) {
            if (System.currentTimeMillis() - start > 20 * 1000) {
                Assert.assertTrue(false);
            }
            // 
            Thread.sleep(1000);
        }
        Mockito.verify(ethereumImpl, Mockito.times(2)).addNewMinedBlock(Mockito.any());
    } finally {
        minerServer.stop();
    }
}

Example 3 with Constants

use of org.ethereum.config.Constants in project rskj by rsksmart.

the class GasLimitCalculator method calculateBlockGasLimit.

// At the end of this algorithm it will increase the gas limit if and only if the previous block gas used
// is above 2/3 of the block gas limit, and decrease otherwise, by small amounts
// The idea is to increase the gas limit when there are more transactions on the network while reduce it when
// there are no or almost no transaction on it
public BigInteger calculateBlockGasLimit(BigInteger parentGasLimit, BigInteger parentGasUsed, BigInteger minGasLimit, BigInteger targetGasLimit, boolean forceTarget) {
    Constants constants = config.getBlockchainConfig().getCommonConstants();
    BigInteger newGasLimit = parentGasLimit;
    // deltaMax = parentGasLimit / 1024
    // current Eth implementation substracts parentGasLimit / 1024 - 1
    // parent - deltaMax or parent + deltaMax are the limits
    // that should be accepted by consensus rules
    BigInteger deltaMax = parentGasLimit.divide(BigInteger.valueOf(constants.getGasLimitBoundDivisor()));
    // TODO: we should assert this before reaching this point
    if (targetGasLimit.compareTo(minGasLimit) < 0) {
        targetGasLimit = minGasLimit;
    }
    // the gas used
    if (forceTarget) {
        if (targetGasLimit.compareTo(parentGasLimit) < 0) {
            newGasLimit = newGasLimit.subtract(deltaMax);
            if (targetGasLimit.compareTo(newGasLimit) > 0) {
                newGasLimit = targetGasLimit;
            }
            return newGasLimit;
        } else {
            newGasLimit = newGasLimit.add(deltaMax);
            if (targetGasLimit.compareTo(newGasLimit) < 0) {
                newGasLimit = targetGasLimit;
            }
            return newGasLimit;
        }
    }
    // contrib = (parentGasUsed * 3 / 2) / 1024
    BigInteger contrib = parentGasUsed.multiply(BigInteger.valueOf(3));
    contrib = contrib.divide(BigInteger.valueOf(2));
    contrib = contrib.divide(BigInteger.valueOf(constants.getGasLimitBoundDivisor()));
    newGasLimit = newGasLimit.subtract(deltaMax);
    newGasLimit = newGasLimit.add(contrib);
    // Gas limit can never be lesser than a certain threshold
    if (newGasLimit.compareTo(minGasLimit) < 0) {
        newGasLimit = minGasLimit;
    }
    if (newGasLimit.compareTo(targetGasLimit) > 0) {
        newGasLimit = targetGasLimit;
    }
    // I've never done enough calculations, but neither of these two should ever happen
    if (newGasLimit.compareTo(parentGasLimit.subtract(deltaMax)) < 0) {
        newGasLimit = parentGasLimit;
    }
    if (newGasLimit.compareTo(parentGasLimit.add(deltaMax)) > 0) {
        newGasLimit = parentGasLimit;
    }
    return newGasLimit;
}