/**
* @param BlockHeaderInterface $header
* @return Chain
*/
public function findTipForNext(BlockHeaderInterface $header)
{
foreach ($this->states as $state) {
$tTip = $state->getChain();
$tipHash = $tTip->getIndex()->getHash();
if ($header->getPrevBlock() == $tipHash) {
$tip = $tTip;
}
}
if (!isset($tip)) {
throw new \RuntimeException('No tip found for this Header');
}
return $tip;
}
/**
* @param BlockHeaderInterface $header
* @return BlockIndexInterface|bool
*/
public function hasBlockTip(BlockHeaderInterface $header)
{
echo "CheckHashBlockTip - " . count($this->segments) . PHP_EOL;
foreach ($this->segments as $segment) {
/** @var BlockIndexInterface $segBlock */
$segBlock = $this->segmentBlock->offsetGet($segment);
if ($header->getPrevBlock()->equals($segBlock->getHash())) {
return $segBlock;
}
}
return false;
}
/**
* @param BlockHeaderInterface $header
* @return \BitWasp\Buffertools\Buffer
*/
public function serialize(BlockHeaderInterface $header)
{
return $this->getTemplate()->write([$header->getVersion(), Buffer::hex($header->getPrevBlock()), Buffer::hex($header->getMerkleRoot()), $header->getTimestamp(), $header->getBits(), $header->getNonce()]);
}
/**
* Add the block to the cache and index, commiting the utxos also.
* Will fail if it doesn't elongate the current chain
*
* @param BlockHeaderInterface $header
* @throws BlockPrevNotFound
*/
public function add(BlockHeaderInterface $header)
{
if ($this->chainTip()->getBlockHash() !== $header->getPrevBlock()) {
throw new BlockPrevNotFound('Block does not elongate the current chain');
}
$this->storeBlock($header)->updateProofOfWork();
}
/**
* Creates the Genesis block index
* @param BlockHeaderInterface $header
* @return bool
*/
public function createIndexGenesis(BlockHeaderInterface $header)
{
$stmtHeader = $this->dbh->prepare('INSERT INTO headerIndex (
hash, segment, height, work, version, prevBlock, merkleRoot, nBits, nTimestamp, nNonce
) VALUES (
:hash, :segment, :height, :work, :version, :prevBlock, :merkleRoot, :nBits, :nTimestamp, :nNonce
)
');
if ($stmtHeader->execute(array('hash' => $header->getHash()->getBinary(), 'segment' => 0, 'height' => 0, 'work' => 0, 'version' => $header->getVersion(), 'prevBlock' => $header->getPrevBlock()->getBinary(), 'merkleRoot' => $header->getMerkleRoot()->getBinary(), 'nBits' => $header->getBits(), 'nTimestamp' => $header->getTimestamp(), 'nNonce' => $header->getNonce()))) {
return true;
}
throw new \RuntimeException('Failed to update insert Genesis block index!');
}
