/**
* @param Peer $peer
* @param Block $blockMsg
*/
public function onBlock(Peer $peer, Block $blockMsg)
{
$best = $this->chain();
$block = $blockMsg->getBlock();
try {
$this->blocks->accept($best, $block, $this->headers, $this->utxo);
$this->chains->checkTips();
$this->blockDownload->received($best, $peer, $block->getHeader()->getHash());
} catch (\Exception $e) {
$header = $block->getHeader();
echo 'Failed to accept block' . PHP_EOL;
echo $e->getMessage() . PHP_EOL;
if ($best->getChain()->containsHash(Buffer::hex($block->getHeader()->getPrevBlock()))) {
if ($header->getPrevBlock() === $best->getLastBlock()->getHash()) {
echo $block->getHeader()->getHash()->getHex() . PHP_EOL;
echo $block->getHex() . PHP_EOL;
echo 'We have prevblockIndex, so this is weird.';
echo $e->getTraceAsString() . PHP_EOL;
echo $e->getMessage() . PHP_EOL;
} else {
echo 'Didn\'t elongate the chain, probably from the future..' . PHP_EOL;
}
}
}
}
/**
* BetterNode constructor.
* @param ConfigProviderInterface $config
* @param ParamsInterface $params
* @param DbInterface $db
*/
public function __construct(ConfigProviderInterface $config, ParamsInterface $params, DbInterface $db)
{
$math = Bitcoin::getMath();
$adapter = Bitcoin::getEcAdapter($math);
$this->chains = new ChainContainer($math, $params);
$consensus = new Consensus($math, $params);
$pow = new ProofOfWork($math, $params);
$this->headers = new Index\Headers($db, $adapter, $this->chains, $consensus, $pow);
$this->blocks = new Index\Blocks($db, $config, $adapter, $this->chains, $consensus);
$this->transactions = new Index\Transactions($db);
$genesis = $params->getGenesisBlock();
$this->headers->init($genesis->getHeader());
$this->blocks->init($genesis);
$this->db = $db;
$segments = $this->db->fetchChainSegments();
foreach ($segments as $segment) {
$this->chains->addSegment($segment);
}
$this->chains->initialize($this->db);
}
/**
* @param int $minVersion
* @param int $startHeight
* @param int $nRequired
* @param Index\Blocks $blocks
* @return bool
*/
public function isSuperMajority($minVersion, $startHeight, Index\Blocks $blocks, $nRequired)
{
$nFound = 0;
$window = $this->params->majorityWindow();
for ($i = 0; $i < $window && $nFound < $nRequired && ($index = $blocks->fetchByHeight($startHeight - $i)); $i++) {
if ($this->math->cmp($index->getHeader()->getVersion(), $minVersion)) {
$nFound++;
}
}
return $nFound >= $nRequired;
}
