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<?php |
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namespace Bdf\Prime\Connection; |
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use Bdf\Prime\ConnectionManager; |
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use Doctrine\Common\EventManager; |
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use Doctrine\DBAL\Cache\QueryCacheProfile; |
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use Doctrine\DBAL\Configuration; |
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use Doctrine\DBAL\Driver; |
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use LogicException; |
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/** |
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* MasterSlaveConnection |
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* |
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* The master / slave connection is a connection to a master server with a connection wrapper to a slave server. |
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* Only method SimpleConnection#executeQuery will be redirect to the salve. |
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* |
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* SimpleConnection#quote also use slave. |
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* |
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* Becareful those methods are used on master: |
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* |
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* SimpleConnection#prepare |
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* SimpleConnection#query |
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* |
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* @package Bdf\Prime\Connection |
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*/ |
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class MasterSlaveConnection extends SimpleConnection implements SubConnectionManagerInterface |
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{ |
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/** |
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* The connection specifically for read operations |
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* |
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* This connection is used only for the method SimpleConnection#executeQuery |
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* |
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* @var SimpleConnection |
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*/ |
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private $readConnection; |
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/** |
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* Force the read on master |
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* |
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* @var boolean |
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*/ |
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private $force = false; |
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/** |
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* Initializes a new instance of the Connection class. |
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* |
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* Here's a read connection configuration |
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* |
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* @example |
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* |
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* $conn = DriverManager::getConnection([ |
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* 'driver' => 'pdo_mysql', |
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* 'user' => '', |
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* 'password' => '', |
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* 'host' => '', |
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* 'dbname' => '', |
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* 'read' => [ |
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* 'user' => 'slave', |
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* 'password' => '', |
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* 'host' => '', |
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* 'dbname' => '', |
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* ] |
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* ]); |
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* |
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* @param array $params The connection parameters. |
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* @param \Doctrine\DBAL\Driver $driver The driver to use. |
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* @param \Doctrine\DBAL\Configuration|null $config The configuration, optional. |
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* @param \Doctrine\Common\EventManager|null $eventManager The event manager, optional. |
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*/ |
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public function __construct(array $params, Driver $driver, Configuration $config = null, EventManager $eventManager = null) |
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{ |
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if (!isset($params['read'])) { |
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throw new LogicException('Master/slave connection needs readable connection in parameters'); |
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} |
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$this->readConnection = $params['read']; |
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parent::__construct($params, $driver, $config, $eventManager); |
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} |
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/** |
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* Get the read connection |
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* |
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* @return SimpleConnection |
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*/ |
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public function getReadConnection() |
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{ |
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return $this->readConnection; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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3 |
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public function getConnection($name) |
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{ |
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if ($name === 'read') { |
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return $this->readConnection; |
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} |
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// Force the read on master if it is the awaiting connection |
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if ($name === 'master') { |
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return $this->force(); |
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} |
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throw new LogicException('The sub connection "'.$name.'" is unknown in the master / slave connection'); |
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} |
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/** |
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* Force next read on master connection once |
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* This flag will change after the execution of method executeQuery |
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* |
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* @return $this |
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*/ |
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public function force() |
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{ |
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$this->force = true; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function executeQuery($query, array $params = [], $types = [], QueryCacheProfile $qcp = null) |
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{ |
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if ($this->getTransactionNestingLevel() <= 0 && $this->force !== true) { |
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return $this->readConnection->executeQuery($query, $params, $types, $qcp); |
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} |
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$this->force = false; |
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return parent::executeQuery($query, $params, $types, $qcp); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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1 |
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public function quote($input, $type = null) |
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{ |
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return $this->readConnection->quote($input, $type); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function close() |
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{ |
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parent::close(); |
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$this->readConnection->close(); |
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} |
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} |
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b2pweb /
bdf-prime
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