/**
* @param BufferInterface $hash
* @param BlockHeaderInterface $header
* @param bool $checkPow
* @return $this
*/
public function check(BufferInterface $hash, BlockHeaderInterface $header, $checkPow = true)
{
try {
if ($checkPow) {
$this->pow->check($hash, $header->getBits());
}
} catch (\Exception $e) {
throw new \RuntimeException('Headers::check() - failed validating header proof-of-work');
}
return $this;
}
/**
* Process a block against the given state of the chain.
* @param BlockInterface $block
* @return bool
*/
public function process(BlockInterface $block)
{
// Ignore the genesis block
$header = $block->getHeader();
$hash = $header->getBlockHash();
if ($hash === $this->genesis->getHeader()->getBlockHash()) {
return true;
}
if ($this->index()->height()->contains($hash)) {
return true;
}
try {
// Attempt to add it to the chain
$this->add($block);
$this->pow->checkHeader($header);
$result = true;
} catch (BlockPrevNotFound $e) {
// If it fails because it doesn't elongate the chain, process it as an orphan.
// Result will be determined
$result = $this->processOrphan($block);
} catch (BlockPowError $e) {
$result = false;
// Invalid block.
}
return $result;
}
/**
* @param BufferInterface $hash
* @param BlockIndexInterface $prevIndex
* @param BlockHeaderInterface $header
* @return BlockIndex
*/
public function getNextIndex(BufferInterface $hash, BlockIndexInterface $prevIndex, BlockHeaderInterface $header)
{
return new BlockIndex($hash, $prevIndex->getHeight() + 1, $this->math->toString($this->math->add($this->proofOfWork->getWork($header->getBits()), gmp_init($prevIndex->getWork()))), $header);
}