Examples with A0BlockHeader org.aion.zero.types.A0BlockHeader used on opensource projects

Example 1 with A0BlockHeader

use of org.aion.zero.types.A0BlockHeader in project aion by aionnetwork.

the class ChainConfigurationTest method testValidation.

@Test
public void testValidation() {
    int n = 210;
    int k = 9;
    byte[] nonce = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
    // setup mock
    A0BlockHeader.Builder builder = new A0BlockHeader.Builder();
    builder.withDifficulty(BigInteger.valueOf(1).toByteArray());
    builder.withNonce(nonce);
    A0BlockHeader header = builder.build();
    Equihash equihash = new Equihash(n, k);
    int[][] solutions;
    while (true) {
        solutions = equihash.getSolutionsForNonce(header.getHeaderBytes(true), header.getNonce());
        if (solutions.length > 0)
            break;
    }
    // compress solution
    byte[] compressedSolution = EquiUtils.getMinimalFromIndices(solutions[0], n / (k + 1));
    header.setSolution(compressedSolution);
    ChainConfiguration chainConfig = new ChainConfiguration();
    BlockHeaderValidator<A0BlockHeader> blockHeaderValidator = chainConfig.createBlockHeaderValidator();
    blockHeaderValidator.validate(header, log);
}

Example 2 with A0BlockHeader

use of org.aion.zero.types.A0BlockHeader in project aion by aionnetwork.

the class A0BlockHeaderTest method testBlockHeaderFromRLP.

// Test is a self referencing
@Test
public void testBlockHeaderFromRLP() throws Exception {
    long time = System.currentTimeMillis() / 1000;
    A0BlockHeader.Builder builder = new A0BlockHeader.Builder();
    builder.fromUnsafeSource().withCoinbase(Address.wrap(COINBASE)).withTxTrieRoot(TRIE_ROOT).withExtraData(EXTRA_DATA).withReceiptTrieRoot(RECEIPT_ROOT).withTimestamp(time).withNumber(NUMBER_BYTES).withEnergyConsumed(ENERGY_CONSUMED_BYTES).withEnergyLimit(ENERGY_LIMIT_BYTES).withParentHash(PARENT_HASH);
    A0BlockHeader header = builder.build();
    byte[] encoded = header.getEncoded();
    A0BlockHeader reconstructed = A0BlockHeader.fromRLP(encoded, true);
    assertThat(reconstructed.getCoinbase()).isEqualTo(header.getCoinbase());
    assertThat(reconstructed.getTxTrieRoot()).isEqualTo(header.getTxTrieRoot());
    assertThat(reconstructed.getExtraData()).isEqualTo(header.getExtraData());
    assertThat(reconstructed.getReceiptsRoot()).isEqualTo(header.getReceiptsRoot());
    assertThat(reconstructed.getTimestamp()).isEqualTo(header.getTimestamp());
    assertThat(reconstructed.getNumber()).isEqualTo(header.getNumber());
    assertThat(reconstructed.getEnergyConsumed()).isEqualTo(header.getEnergyConsumed());
    assertThat(reconstructed.getEnergyLimit()).isEqualTo(header.getEnergyLimit());
    assertThat(reconstructed.getParentHash()).isEqualTo(header.getParentHash());
}

Example 3 with A0BlockHeader

use of org.aion.zero.types.A0BlockHeader in project aion by aionnetwork.

the class EquihashSolutionRuleTest method testProperSolution.

// perhaps we should generate a solution by hand
@Test
public void testProperSolution() {
    // given that all our inputs are deterministic, for given nonce, there should always
    // be a valid output solution
    final int n = 210;
    final int k = 9;
    final BigInteger givenNonce = new BigInteger("21");
    // assume a 32-byte nonce (fixed)
    byte[] unpaddedNonceBytes = givenNonce.toByteArray();
    byte[] nonceBytes = new byte[32];
    System.arraycopy(unpaddedNonceBytes, 0, nonceBytes, 32 - unpaddedNonceBytes.length, unpaddedNonceBytes.length);
    System.out.println(new ByteArrayWrapper(nonceBytes));
    A0BlockHeader header = new A0BlockHeader.Builder().build();
    header.setNonce(nonceBytes);
    byte[] headerBytes = header.getHeaderBytes(true);
    Equihash equihash = new Equihash(n, k);
    int[][] solutions = equihash.getSolutionsForNonce(headerBytes, header.getNonce());
    byte[] compressedSolution = (new EquiUtils()).getMinimalFromIndices(solutions[0], n / (k + 1));
    header.setSolution(compressedSolution);
// EquihashSolutionRule rule = new EquihashSolutionRule(new OptimizedEquiValidator(n, k));
// boolean result = rule.validate(header);
// assertThat(result).isTrue();
// assertThat(rule.getErrors()).isEmpty();
}

Example 4 with A0BlockHeader

use of org.aion.zero.types.A0BlockHeader in project aion by aionnetwork.

the class Equihash method mine.

/*
     * Mine for a single nonce
     */
public Solution mine(IAionBlock block, byte[] nonce) {
    // Copy blockheader to create a local copy to modify
    A0BlockHeader updateHeader = new A0BlockHeader(block.getHeader());
    // Get timestamp
    long timeStamp = System.currentTimeMillis() / 1000;
    // Update header
    updateHeader.setTimestamp(timeStamp);
    byte[] blockHeader = updateHeader.getHeaderBytes(true);
    // Target needs to be adjusted after further exploration
    BigInteger target = valueOf(2).pow(256).divide(new BigInteger(block.getHeader().getDifficulty()));
    int[][] generatedSolutions;
    // Convert byte to LE order (in place)
    toLEByteArray(nonce);
    if (LOG.isDebugEnabled()) {
        LOG.debug("Mining Nonce: " + toHexString(nonce) + " Nonce Size: " + nonce.length + "  " + toHexString(nonce));
    }
    // Get solutions for this nonce
    generatedSolutions = getSolutionsForNonce(blockHeader, nonce);
    // Increment number of solutions
    this.totalSolGenerated.addAndGet(generatedSolutions.length);
    if (LOG.isDebugEnabled()) {
        LOG.debug("Produced " + generatedSolutions.length + " solutions");
    }
    // Check each returned solution
    for (int i = 0; i < generatedSolutions.length; i++) {
        // Verify if any of the solutions pass the difficulty filter, return if true.
        byte[] minimal = EquiUtils.getMinimalFromIndices(generatedSolutions[i], cBitLen);
        updateHeader.setSolution(minimal);
        updateHeader.setNonce(nonce);
        // Found a valid solution
        if (isValidBlock(updateHeader, target)) {
            return new Solution(block, nonce, minimal, timeStamp);
        }
    }
    return null;
}

Example 5 with A0BlockHeader

use of org.aion.zero.types.A0BlockHeader in project aion by aionnetwork.

the class TaskGetBodies method run.

@Override
public void run() {
    while (run.get()) {
        HeadersWrapper hw;
        try {
            hw = headersImported.take();
        } catch (InterruptedException e) {
            continue;
        }
        int idHash = hw.getNodeIdHash();
        List<A0BlockHeader> headers = hw.getHeaders();
        if (headers.isEmpty()) {
            continue;
        }
        HeadersWrapper hwPrevious = headersSent.get(idHash);
        if (hwPrevious == null || (System.currentTimeMillis() - hwPrevious.getTimestamp()) > SENT_HEADERS_TIMEOUT) {
            this.headersSent.put(idHash, hw);
            if (log.isDebugEnabled()) {
                log.debug("<get-bodies from-num={} to-num={} node={}>", headers.get(0).getNumber(), headers.get(headers.size() - 1).getNumber(), hw.getDisplayId());
            }
            this.p2p.send(idHash, new ReqBlocksBodies(headers.stream().map(k -> k.getHash()).collect(Collectors.toList())));
        }
    }
}