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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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namespace Illuminate\Database\Connectors;
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use Doctrine\DBAL\Driver\PDOConnection;
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use Exception;
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use Illuminate\Database\DetectsLostConnections;
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use PDO;
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use Throwable;
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class Connector
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{
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    use DetectsLostConnections;
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    /**
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     * The default PDO connection options.
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     *
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     * @var array
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     */
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    protected $options = [
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        PDO::ATTR_CASE => PDO::CASE_NATURAL,
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        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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        PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
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        PDO::ATTR_STRINGIFY_FETCHES => false,
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        PDO::ATTR_EMULATE_PREPARES => false,
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    ];
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    /**
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     * Create a new PDO connection.
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     *
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     * @param  string  $dsn
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     * @param  array  $config
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     * @param  array  $options
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     * @return \PDO
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     *
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     * @throws \Exception
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     */
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    public function createConnection($dsn, array $config, array $options)
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    {
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        [$username, $password] = [
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            $config['username'] ?? null, $config['password'] ?? null,
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        ];
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        try {
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            return $this->createPdoConnection(
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                $dsn, $username, $password, $options
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            );
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        } catch (Exception $e) {
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            return $this->tryAgainIfCausedByLostConnection(
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                $e, $dsn, $username, $password, $options
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            );
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        }
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    }
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    /**
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     * Create a new PDO connection instance.
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     *
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     * @param  string  $dsn
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     * @param  string  $username
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     * @param  string  $password
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     * @param  array  $options
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     * @return \PDO
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     */
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    protected function createPdoConnection($dsn, $username, $password, $options)
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    {
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        if (class_exists(PDOConnection::class) && ! $this->isPersistentConnection($options)) {
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            return new PDOConnection($dsn, $username, $password, $options);
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        }
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        return new PDO($dsn, $username, $password, $options);
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    }
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    /**
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     * Determine if the connection is persistent.
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     *
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     * @param  array  $options
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     * @return bool
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     */
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    protected function isPersistentConnection($options)
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    {
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        return isset($options[PDO::ATTR_PERSISTENT]) &&
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               $options[PDO::ATTR_PERSISTENT];
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    }
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    /**
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     * Handle an exception that occurred during connect execution.
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     *
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     * @param  \Throwable  $e
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     * @param  string  $dsn
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     * @param  string  $username
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     * @param  string  $password
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     * @param  array  $options
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     * @return \PDO
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     *
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     * @throws \Exception
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     */
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    protected function tryAgainIfCausedByLostConnection(Throwable $e, $dsn, $username, $password, $options)
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    {
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        if ($this->causedByLostConnection($e)) {
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            return $this->createPdoConnection($dsn, $username, $password, $options);
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        }
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        throw $e;
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    }
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    /**
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     * Get the PDO options based on the configuration.
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     *
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     * @param  array  $config
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     * @return array
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     */
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    public function getOptions(array $config)
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    {
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        $options = $config['options'] ?? [];
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        return array_diff_key($this->options, $options) + $options;
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    }
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    /**
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     * Get the default PDO connection options.
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     *
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     * @return array
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     */
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    public function getDefaultOptions()
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    {
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        return $this->options;
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    }
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    /**
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     * Set the default PDO connection options.
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     *
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     * @param  array  $options
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     * @return void
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     */
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    public function setDefaultOptions(array $options)
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    {
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        $this->options = $options;
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    }
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}