Java StandaloneBlockchain类代码示例

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void backwardCompatibleDbTest() {
    // check that we can read previously saved entries (saved with legacy code)

    HashMapDB txDb = new HashMapDB();
    TransactionStore transactionStore = new TransactionStore(txDb);
    StandaloneBlockchain bc = new StandaloneBlockchain();
    bc.getBlockchain().withTransactionStore(transactionStore);

    bc.sendEther(new byte[20], BigInteger.valueOf(1000));
    Block b1 = bc.createBlock();
    Transaction tx = b1.getTransactionsList().get(0);
    TransactionInfo info = transactionStore.get(tx.getHash()).get(0);

    HashMapDB<byte[]> txDb1 = new HashMapDB<>();
    txDb1.put(tx.getHash(), info.getEncoded()); // legacy serialization
    TransactionStore transactionStore1 = new TransactionStore(txDb1);
    TransactionInfo info1 = transactionStore1.get(tx.getHash()).get(0);
    Assert.assertArrayEquals(info1.getReceipt().getPostTxState(), info.getReceipt().getPostTxState());
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void constructorTest() {
    StandaloneBlockchain sb = new StandaloneBlockchain().withAutoblock(true);
    SolidityContract a = sb.submitNewContract(
            "contract A {" +
                    "  uint public a;" +
                    "  uint public b;" +
                    "  function A(uint a_, uint b_) {a = a_; b = b_; }" +
                    "}",
            "A", 555, 777
    );
    Assert.assertEquals(BigInteger.valueOf(555), a.callConstFunction("a")[0]);
    Assert.assertEquals(BigInteger.valueOf(777), a.callConstFunction("b")[0]);

    SolidityContract b = sb.submitNewContract(
            "contract A {" +
                    "  string public a;" +
                    "  uint public b;" +
                    "  function A(string a_, uint b_) {a = a_; b = b_; }" +
                    "}",
            "A", "This string is longer than 32 bytes...", 777
    );
    Assert.assertEquals("This string is longer than 32 bytes...", b.callConstFunction("a")[0]);
    Assert.assertEquals(BigInteger.valueOf(777), b.callConstFunction("b")[0]);
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void shouldLoadGenesis_withCodeAndNonceInAlloc() {
    final Genesis genesis = GenesisLoader.loadGenesis(
            getClass().getResourceAsStream("/genesis/genesis-alloc.json"));
    final StandaloneBlockchain bc = new StandaloneBlockchain();

    bc.withGenesis(genesis);

    final byte[] account = Hex.decode("cd2a3d9f938e13cd947ec05abc7fe734df8dd826");
    byte[] expectedCode = Hex.decode("00ff00");
    long expectedNonce = 255;       //FF

    final BigInteger actualNonce = bc.getBlockchain().getRepository().getNonce(account);
    final byte[] actualCode = bc.getBlockchain().getRepository().getCode(account);

    assertEquals(BigInteger.valueOf(expectedNonce), actualNonce);
    assertTrue(equal(expectedCode, actualCode));
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void testBlockOnlyIncluded() throws InterruptedException {
    StandaloneBlockchain bc = new StandaloneBlockchain();
    PendingListener l = new PendingListener();
    bc.addEthereumListener(l);
    Triple<TransactionReceipt, EthereumListener.PendingTransactionState, Block> txUpd = null;
    PendingStateImpl pendingState = (PendingStateImpl) bc.getBlockchain().getPendingState();

    ECKey alice = new ECKey();
    ECKey bob = new ECKey();

    bc.sendEther(bob.getAddress(), convert(100, ETHER));

    Block b1 = bc.createBlock();

    Transaction tx1 = bc.createTransaction(bob, 0, alice.getAddress(), BigInteger.valueOf(1000000), new byte[0]);
    bc.submitTransaction(tx1);
    Block b2 = bc.createBlock();

    Block b2_ = bc.createForkBlock(b1);
    Assert.assertTrue(l.getQueueFor(tx1).isEmpty());
    Block b3_ = bc.createForkBlock(b2_);
    txUpd = l.pollTxUpdate(tx1);
    Assert.assertEquals(txUpd.getMiddle(), PENDING);
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void branchTest() throws Exception {
    final int pruneCount = 3;
    SystemProperties.getDefault().overrideParams(
            "database.prune.enabled", "true",
            "database.prune.maxDepth", "" + pruneCount);

    StandaloneBlockchain bc = new StandaloneBlockchain();

    SolidityContract contr = bc.submitNewContract(
            "contract Simple {" +
            "  uint public n;" +
            "  function set(uint _n) { n = _n; } " +
            "}");
    Block b1 = bc.createBlock();
    contr.callFunction("set", 0xaaaaaaaaaaaaL);
    Block b2 = bc.createBlock();
    contr.callFunction("set", 0xbbbbbbbbbbbbL);
    Block b2_ = bc.createForkBlock(b1);
    bc.createForkBlock(b2);
    bc.createBlock();
    bc.createBlock();
    bc.createBlock();

    Assert.assertEquals(BigInteger.valueOf(0xaaaaaaaaaaaaL), contr.callConstFunction("n")[0]);
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
public static void main(String[] args) throws Exception {
    // Creating a blockchain which generates a new block for each transaction
    // just not to call createBlock() after each call transaction
    StandaloneBlockchain bc = new StandaloneBlockchain().withAutoblock(true);
    System.out.println("Creating first empty block (need some time to generate DAG)...");
    // warning up the block miner just to understand how long
    // the initial miner dataset is generated
    bc.createBlock();
    System.out.println("Creating a contract...");
    // This compiles our Solidity contract, submits it to the blockchain
    // internally generates the block with this transaction and returns the
    // contract interface
    SolidityContract calc = bc.submitNewContract(contractSrc);
    System.out.println("Calculating...");
    // Creates the contract call transaction, submits it to the blockchain
    // and generates a new block which includes this transaction
    // After new block is generated the contract state is changed
    calc.callFunction("add", 100);
    // Check the contract state with a constant call which returns result
    // but doesn't generate any transactions and remain the contract state unchanged
    assertEqual(BigInteger.valueOf(100), (BigInteger) calc.callConstFunction("result")[0]);
    calc.callFunction("add", 200);
    assertEqual(BigInteger.valueOf(300), (BigInteger) calc.callConstFunction("result")[0]);
    calc.callFunction("mul", 10);
    assertEqual(BigInteger.valueOf(3000), (BigInteger) calc.callConstFunction("result")[0]);
    calc.callFunction("div", 5);
    assertEqual(BigInteger.valueOf(600), (BigInteger) calc.callConstFunction("result")[0]);
    System.out.println("Clearing...");
    calc.callFunction("clear");
    assertEqual(BigInteger.valueOf(0), (BigInteger) calc.callConstFunction("result")[0]);
    // We are done - the Solidity contract worked as expected.
    System.out.println("Done.");
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void myTest() throws Exception {
    // check that IndexedStore rebranch changes are persisted
    StandaloneBlockchain bc = new StandaloneBlockchain().withGasPrice(1);
    IndexedBlockStore ibs = (IndexedBlockStore) bc.getBlockchain().getBlockStore();

    Block b1 = bc.createBlock();
    Block b2 = bc.createBlock();
    Block b2_ = bc.createForkBlock(b1);
    Assert.assertTrue(bc.getBlockchain().getBestBlock().isEqual(b2));
    Block b3_ = bc.createForkBlock(b2_);
    Assert.assertTrue(bc.getBlockchain().getBestBlock().isEqual(b3_));
    Block sb2 = bc.getBlockchain().getBlockStore().getChainBlockByNumber(2);
    Block sb3 = bc.getBlockchain().getBlockStore().getChainBlockByNumber(3);
    Assert.assertTrue(sb2.isEqual(b2_));
    Assert.assertTrue(sb3.isEqual(b3_));
    Block b4_ = bc.createBlock();
    bc.getBlockchain().flush();

    IndexedBlockStore ibs1 = new IndexedBlockStore();
    ibs1.init(ibs.indexDS, ibs.blocksDS);

    sb2 = ibs1.getChainBlockByNumber(2);
    sb3 = ibs1.getChainBlockByNumber(3);
    Block sb4 = ibs1.getChainBlockByNumber(4);
    Assert.assertTrue(sb2.isEqual(b2_));
    Assert.assertTrue(sb3.isEqual(b3_));
    Assert.assertTrue(sb4.isEqual(b4_));
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void simpleTest() {
    String contractSrc =
            "contract Adder {" +
            "  function add(int a, int b) returns (int) {return a + b;}" +
            "}";
    HashMapDB<byte[]> txDb = new HashMapDB<>();

    StandaloneBlockchain bc = new StandaloneBlockchain();
    bc.getBlockchain().withTransactionStore(new TransactionStore(txDb));
    SolidityContract contract = bc.submitNewContract(contractSrc);
    bc.createBlock();
    contract.callFunction("add", 555, 222);
    Block b2 = bc.createBlock();
    contract.callFunction("add", 333, 333);
    Block b3 = bc.createBlock();
    Transaction tx1 = b2.getTransactionsList().get(0);
    TransactionInfo tx1Info = bc.getBlockchain().getTransactionInfo(tx1.getHash());
    byte[] executionResult = tx1Info.getReceipt().getExecutionResult();
    Assert.assertArrayEquals(new DataWord(777).getData(), executionResult);

    System.out.println(txDb.keys().size());
    bc.getBlockchain().flush();
    System.out.println(txDb.keys().size());

    TransactionStore txStore = new TransactionStore(txDb);
    TransactionInfo tx1Info_ = txStore.get(tx1.getHash()).get(0);
    executionResult = tx1Info_.getReceipt().getExecutionResult();
    Assert.assertArrayEquals(new DataWord(777).getData(), executionResult);

    TransactionInfo highIndex = new TransactionInfo(tx1Info.getReceipt(), tx1Info.getBlockHash(), 255);
    TransactionInfo highIndexCopy = new TransactionInfo(highIndex.getEncoded());
    Assert.assertArrayEquals(highIndex.getBlockHash(), highIndexCopy.getBlockHash());
    Assert.assertEquals(highIndex.getIndex(), highIndexCopy.getIndex());
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void forkTest() {
    // check that TransactionInfo is always returned from the main chain for
    // transaction which included into blocks from different forks

    String contractSrc =
            "contract Adder {" +
            "  int public lastResult;" +
            "  function add(int a, int b) returns (int) {lastResult = a + b; return lastResult; }" +
            "}";
    HashMapDB txDb = new HashMapDB();

    StandaloneBlockchain bc = new StandaloneBlockchain();
    TransactionStore transactionStore = new TransactionStore(txDb);
    bc.getBlockchain().withTransactionStore(transactionStore);
    SolidityContract contract = bc.submitNewContract(contractSrc);
    Block b1 = bc.createBlock();
    contract.callFunction("add", 555, 222);
    Block b2 = bc.createBlock();
    Transaction tx1 = b2.getTransactionsList().get(0);
    TransactionInfo txInfo = bc.getBlockchain().getTransactionInfo(tx1.getHash());
    Assert.assertTrue(Arrays.equals(txInfo.getBlockHash(), b2.getHash()));

    Block b2_ = bc.createForkBlock(b1);
    contract.callFunction("add", 555, 222); // tx with the same hash as before
    Block b3_ = bc.createForkBlock(b2_);
    TransactionInfo txInfo_ = bc.getBlockchain().getTransactionInfo(tx1.getHash());
    Assert.assertTrue(Arrays.equals(txInfo_.getBlockHash(), b3_.getHash()));

    Block b3 = bc.createForkBlock(b2);
    Block b4 = bc.createForkBlock(b3);
    txInfo = bc.getBlockchain().getTransactionInfo(tx1.getHash());
    Assert.assertTrue(Arrays.equals(txInfo.getBlockHash(), b2.getHash()));
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
    public void testDaoExtraData() {
        final StandaloneBlockchain sb = createBlockchain(true);

        for (int i = 0; i < FORK_BLOCK + 30; i++) {
            Block b = sb.createBlock();
//            System.out.println("Created block " + b.getNumber() + " " + getData(b.getExtraData()));
        }

        assertEquals("EthereumJ powered", getData(sb, FORK_BLOCK - 1));
        assertEquals("dao-hard-fork", getData(sb, FORK_BLOCK));
        assertEquals("dao-hard-fork", getData(sb, FORK_BLOCK + FORK_BLOCK_AFFECTED - 1));
        assertEquals("EthereumJ powered", getData(sb, FORK_BLOCK + FORK_BLOCK_AFFECTED));
    }
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void testNoDaoExtraData() {
    final StandaloneBlockchain sb = createBlockchain(false);

    for (int i = 0; i < FORK_BLOCK + 30; i++) {
        Block b = sb.createBlock();
    }

    assertEquals("EthereumJ powered", getData(sb, FORK_BLOCK - 1));
    assertEquals("", getData(sb, FORK_BLOCK));
    assertEquals("", getData(sb, FORK_BLOCK + FORK_BLOCK_AFFECTED - 1));
    assertEquals("EthereumJ powered", getData(sb, FORK_BLOCK + FORK_BLOCK_AFFECTED));
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
private StandaloneBlockchain createBlockchain(boolean proFork) {
    final BaseNetConfig netConfig = new BaseNetConfig();
    final FrontierConfig c1 = StandaloneBlockchain.getEasyMiningConfig();
    netConfig.add(0, StandaloneBlockchain.getEasyMiningConfig());
    netConfig.add(FORK_BLOCK, proFork ? new DaoHFConfig(c1, FORK_BLOCK) : new DaoNoHFConfig(c1, FORK_BLOCK));

    // create blockchain
    return new StandaloneBlockchain()
            .withAutoblock(true)
            .withNetConfig(netConfig);
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void encodeTest1() {
    StandaloneBlockchain sb = new StandaloneBlockchain().withAutoblock(true);
    SolidityContract a = sb.submitNewContract(
            "contract A {" +
                    "  uint public a;" +
                    "  function f(uint a_) {a = a_;}" +
                    "}");
    a.callFunction("f", "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
    BigInteger r = (BigInteger) a.callConstFunction("a")[0];
    System.out.println(r.toString(16));
    Assert.assertEquals(new BigInteger(Hex.decode("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")), r);
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@Test
public void invalidTxTest() {
    // check that invalid tx doesn't break implementation
    StandaloneBlockchain sb = new StandaloneBlockchain();
    ECKey alice = sb.getSender();
    ECKey bob = new ECKey();
    sb.sendEther(bob.getAddress(), BigInteger.valueOf(1000));
    sb.setSender(bob);
    sb.sendEther(alice.getAddress(), BigInteger.ONE);
    sb.setSender(alice);
    sb.sendEther(bob.getAddress(), BigInteger.valueOf(2000));

    sb.createBlock();
}
 

import org.ethereum.util.blockchain.StandaloneBlockchain; //导入依赖的package包/类
@BeforeClass
public static void setup() throws IOException, URISyntaxException {

    nodeA = new Node("enode://3973cb86d7bef9c96e5d589601d788370f9e24670dcba0480c0b3b1b0647d13d0[email protected]localhost:30334");

    SysPropConfigA.props.overrideParams(
            "peer.listen.port", "30334",
            "peer.privateKey", "3ec771c31cac8c0dba77a69e503765701d3c2bb62435888d4ffa38fed60c445c",
            // nodeId: 3973cb86d7bef9c96e5d589601d788370f9e24670dcba0480c0b3b1b0647d13d0f0fffed115dd2d4b5ca1929287839dcd4e77bdc724302b44ae48622a8766ee6
            "genesis", "genesis-light-old.json"
    );
    SysPropConfigA.props.setBlockchainConfig(StandaloneBlockchain.getEasyMiningConfig());

    SysPropConfigB.props.overrideParams(
            "peer.listen.port", "30335",
            "peer.privateKey", "6ef8da380c27cea8fdf7448340ea99e8e2268fc2950d79ed47cbf6f85dc977ec",
            "genesis", "genesis-light-old.json",
            "sync.enabled", "true",
            "sync.max.hashes.ask", "3",
            "sync.max.blocks.ask", "2"
    );
    SysPropConfigB.props.setBlockchainConfig(StandaloneBlockchain.getEasyMiningConfig());

    /*
     1  => ed1b6f07d738ad92c5bdc3b98fe25afea9c863dd351711776d9ce1ffb9e3d276
     2  => 43808666b662d131c6cff336a0d13608767ead9c9d5f181e95caa3597f3faf14
     3  => 1b5c231211f500bc73148dc9d9bdb9de2265465ba441a0db1790ba4b3f5f3e9c
     4  => db517e04399dbf5a65caf6b2572b3966c8f98a1d29b1e50dc8db51e54c15d83d
     5  => c42d6dbaa756eda7f4244a3507670d764232bd7068d43e6d8ef680c6920132f6
     6  => 604c92e8d16dafb64134210d521fcc85aec27452e75aedf708ac72d8240585d3
     7  => 3f51b0471eb345b1c5f3c6628e69744358ff81d3f64a3744bbb2edf2adbb0ebc
     8  => 62cfd04e29d941954e68ac8ca18ef5cd78b19809eaed860ae72589ebad53a21d
     9  => d32fc8e151f158d52fe0be6cba6d0b5c20793a00c4ad0d32db8ccd9269199a29
     10 => 22d8c1d909eb142ea0d69d0a38711874f98d6eef1bc669836da36f6b557e9564
     */
    mainB1B10 = loadBlocks("sync/main-b1-b10.dmp");

    b10 = mainB1B10.get(mainB1B10.size() - 1);
}