/**
* @param BlockIndex $index
*/
public function updateLastBlock(BlockIndex $index)
{
if ($this->lastBlock->getHash() !== $index->getHeader()->getPrevBlock()) {
throw new \RuntimeException('UpdateLastBlock: Block does not extend this chain');
}
if ($this->lastBlock->getHeight() != $index->getHeight() - 1) {
throw new \RuntimeException('UpdateLastBlock: Incorrect chain height' . ($index->getHeight() - 1));
}
$this->lastBlock = $index;
}
/**
* @param BlockIndex $index
*/
public function add(BlockIndex $index)
{
if ($index->getHeader()->getPrevBlock() !== $this->getHash($index->getHeight() - 1)->getHex()) {
throw new \RuntimeException('ChainCache: New BlockIndex does not refer to last');
}
$binary = hex2bin($index->getHash());
$this->hashByHeight[] = $binary;
$this->heightByHash[$binary] = $index->getHeight();
}
/**
* @param BlockIndex $index
*/
public function updateTip(BlockIndex $index)
{
if ($this->index->getHash() !== $index->getHeader()->getPrevBlock()) {
throw new \RuntimeException('Header: Header does not extend this chain');
}
if ($index->getHeight() - 1 != $this->index->getHeight()) {
throw new \RuntimeException('Header: Incorrect chain height');
}
$this->chainCache->add($index);
$this->index = $index;
}
public function testBlockIndex()
{
$headerHex = '0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4a29ab5f49ffff001d1dac2b7c';
$header = BlockHeaderFactory::fromHex($headerHex);
$hash = $header->getHash();
$height = 0;
$work = 0;
$index = new BlockIndex($hash, $height, $work, $header);
$this->assertEquals($hash, $index->getHash());
$this->assertEquals($height, $index->getHeight());
$this->assertEquals($work, $index->getWork());
$this->assertSame($header, $index->getHeader());
}
/**
* @param BlockIndex $startIndex
* @param BlockIndex[] $index
* @return bool
* @throws \Exception
*/
public function insertIndexBatch(BlockIndex $startIndex, array $index)
{
if ($this->debug) {
echo "db: called insertIndexBATCH\n";
}
if (null == $this->fetchLftStmt) {
$this->fetchLftStmt = $this->dbh->prepare('SELECT lft FROM headerIndex WHERE hash = :prevBlock');
$this->updateIndicesStmt = $this->dbh->prepare('
UPDATE headerIndex SET rgt = rgt + :nTimes2 WHERE rgt > :myLeft ;
UPDATE headerIndex SET lft = lft + :nTimes2 WHERE lft > :myLeft ;
');
}
$fetchParent = $this->fetchLftStmt;
$updateIndices = $this->updateIndicesStmt;
$fetchParent->bindParam(':prevBlock', $startIndex->getHash());
if ($fetchParent->execute()) {
foreach ($fetchParent->fetchAll() as $record) {
$myLeft = $record['lft'];
}
}
$fetchParent->closeCursor();
if (!isset($myLeft)) {
throw new \RuntimeException('Failed to extract header position');
}
$totalN = count($index);
$nTimesTwo = 2 * $totalN;
$leftOffset = $myLeft;
$rightOffset = $myLeft + $nTimesTwo;
$this->dbh->beginTransaction();
try {
if ($updateIndices->execute(['nTimes2' => $nTimesTwo, 'myLeft' => $myLeft])) {
$updateIndices->closeCursor();
$values = [];
$query = [];
foreach ($index as $c => $i) {
$query[] = "(:hash{$c} , :height{$c} , :work{$c} ,\n :version{$c} , :prevBlock{$c} , :merkleRoot{$c} ,\n :nBits{$c} , :nTimestamp{$c} , :nNonce{$c} ,\n :lft{$c} , :rgt{$c} )";
$values['hash' . $c] = $i->getHash();
$values['height' . $c] = $i->getHeight();
$values['work' . $c] = $i->getWork();
$header = $i->getHeader();
$values['version' . $c] = $header->getVersion();
$values['prevBlock' . $c] = $header->getPrevBlock();
$values['merkleRoot' . $c] = $header->getMerkleRoot();
$values['nBits' . $c] = $header->getBits()->getInt();
$values['nTimestamp' . $c] = $header->getTimestamp();
$values['nNonce' . $c] = $header->getNonce();
$values['lft' . $c] = $leftOffset + 1 + $c;
$values['rgt' . $c] = $rightOffset - $c;
}
$stmt = $this->dbh->prepare("\n INSERT INTO headerIndex (hash, height, work, version, prevBlock, merkleRoot, nBits, nTimestamp, nNonce, lft, rgt )\n VALUES " . implode(', ', $query));
$count = $stmt->execute($values);
$this->dbh->commit();
if ($count === $totalN) {
return true;
} else {
throw new \RuntimeException('Strange: Failed to update chain!');
}
}
} catch (\Exception $e) {
$this->dbh->rollBack();
throw $e;
}
throw new \RuntimeException('Failed to update chain!');
}
