/**
* @param CqlStatement $statement
* @param array $parameters
* @param int $consistency
* @param int $retries
*
* @return array|mixed
* @throws CqlException
* @throws \Exception
*/
public function execute(CqlStatement $statement, array $parameters = [], $consistency = ConsistencyLevel::ONE, $retries = null)
{
if ($retries === null) {
$retries = (int) $this->_config()->getItem('retries', min(max($this->_availableHostCount, 2), 10));
}
$return = [];
try {
$this->connect()->_switchDatabase();
$packedParameters = [];
foreach ($parameters as $k => $value) {
$packedParameters[] = CqlDataType::pack($statement->getStatement()->variable_types[$k], $value);
}
$result = $this->_client->execute_prepared_cql3_query($statement->getStatement()->itemId, $packedParameters, $consistency);
/**
* @var $result CqlResult
*/
if ($result->type == CqlResultType::VOID) {
return true;
}
foreach ($result->rows as $row) {
/**
* @var $row CqlRow
*/
$resultRow = [];
foreach ($row->columns as $column) {
/**
* @var $column Column
*/
$resultRow[$column->name] = CqlDataType::unpack($result->schema->value_types[$column->name], $column->value);
}
$return[] = $resultRow;
}
} catch (\Exception $exception) {
if ($exception instanceof TimedOutException && !Strings::startsWith($statement->getQuery(), 'SELECT', false)) {
// TimedOutException on writes is NOT a failure
// http://www.datastax.com/dev/blog/how-cassandra-deals-with-replica-failure
return true;
}
$this->_deleteCachedStmt($this->_cacheKey($statement->getQuery(), $statement->getCompression()));
$e = CqlException::from($exception);
if ($retries > 0 && $this->_isRecoverableException($e)) {
$this->disconnect();
if (Strings::startsWith($e->getMessage(), 'Prepared query with ID')) {
// re-prepare statement
$statement = $this->prepare($statement->getQuery(), $statement->getCompression());
}
return $this->execute($statement, $parameters, $consistency, $retries - 1);
}
error_log('CqlConnection Error: (' . $e->getCode() . ') ' . $e->getMessage());
$this->disconnect();
throw $e;
}
return $return;
}
public function __construct($transport)
{
parent::__construct(new TBinaryProtocolAccelerated($transport));
}