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<?php |
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namespace Nip\Database\Connections; |
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use InvalidArgumentException; |
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use Nip\Config\Config; |
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use Nip\Container\Container; |
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use Nip\Database\Connectors\MySqlConnector; |
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use Nip\Utility\Arr; |
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use PDOException; |
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/** |
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* Class ConnectionFactory |
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* @package Nip\Database\Connectors |
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*/ |
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class ConnectionFactory |
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{ |
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/** |
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* The IoC container instance. |
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* |
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* @var Container |
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*/ |
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protected $container; |
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/** |
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* Create a new connection factory instance. |
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* |
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* @param Container $container |
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*/ |
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public function __construct(Container $container = null) |
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{ |
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$this->container = $container ? $container : Container::getInstance(); |
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} |
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/** |
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* Establish a PDO connection based on the configuration. |
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* |
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* @param array $config |
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* @param string $name |
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* @return Connection |
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*/ |
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public function make($config, $name = null) |
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{ |
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$config = $this->parseConfig($config, $name); |
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// if (isset($config['read'])) { |
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// return $this->createReadWriteConnection($config); |
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// } |
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return $this->createSingleConnection($config); |
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} |
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/** |
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* Parse and prepare the database configuration. |
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* |
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* @param array $config |
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* @param string $name |
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* @return array |
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*/ |
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protected function parseConfig($config, $name) |
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{ |
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return $config; |
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// return Arr::add(Arr::add($config, 'prefix', ''), 'name', $name); |
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} |
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/** |
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* Create a single database connection instance. |
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* |
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* @param array $config |
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* @return Connection |
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*/ |
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protected function createSingleConnection($config) |
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{ |
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$pdo = $this->createPdoResolver($config); |
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if (!isset($config['driver'])) { |
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$config['driver'] = 'mysql'; |
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} |
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$connection = $this->createConnection($config['driver'], $pdo, $config['database'], $config['prefix'], $config); |
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$connection->connect($config['host'], $config['username'], $config['password'], $config['database']); |
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return $connection; |
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} |
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/** |
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* Create a new connection instance. |
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* |
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* @param string $driver |
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* @param boolean $connection |
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* @param string $database |
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* @param string $prefix |
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* @param array $config |
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* @return Connection |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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protected function createConnection($driver, $connection, $database, $prefix = '', $config = []) |
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{ |
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// if ($resolver = Connection::getResolver($driver)) { |
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// return $resolver($connection, $database, $prefix, $config); |
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// } |
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switch ($driver) { |
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case 'mysql': |
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return new MySqlConnection($connection, $database, $prefix, $config); |
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} |
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throw new InvalidArgumentException("Unsupported driver [$driver]"); |
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} |
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/** |
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* Create a new Closure that resolves to a PDO instance. |
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* |
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* @param array|Config $config |
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* @return \Closure |
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*/ |
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protected function createPdoResolver($config) |
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{ |
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return false; |
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$config = $config instanceof Config ? $config->toArray() : $config; |
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return array_key_exists('host', $config) |
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? $this->createPdoResolverWithHosts($config) |
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: $this->createPdoResolverWithoutHosts($config); |
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} |
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/** |
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* Create a new Closure that resolves to a PDO instance with a specific host or an array of hosts. |
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* |
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* @param array $config |
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* @return \Closure |
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* |
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* @throws \PDOException |
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*/ |
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protected function createPdoResolverWithHosts(array $config) |
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{ |
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return function () use ($config) { |
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foreach (Arr::shuffle($hosts = $this->parseHosts($config)) as $key => $host) { |
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$config['host'] = $host; |
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try { |
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return $this->createConnector($config)->connect($config); |
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} catch (PDOException $e) { |
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continue; |
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} |
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} |
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throw $e; |
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}; |
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} |
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/** |
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* Parse the hosts configuration item into an array. |
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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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* @throws \InvalidArgumentException |
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*/ |
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protected function parseHosts(array $config) |
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{ |
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$hosts = Arr::wrap($config['host']); |
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if (empty($hosts)) { |
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throw new InvalidArgumentException('Database hosts array is empty.'); |
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} |
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return $hosts; |
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} |
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/** |
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* Create a new Closure that resolves to a PDO instance where there is no configured host. |
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* |
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* @param array $config |
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* @return \Closure |
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*/ |
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protected function createPdoResolverWithoutHosts(array $config) |
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{ |
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return function () use ($config) { |
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return $this->createConnector($config)->connect($config); |
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}; |
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} |
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/** |
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* Create a connector instance based on the configuration. |
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* |
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* @param array $config |
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* @return \Illuminate\Database\Connectors\ConnectorInterface|MySqlConnector |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function createConnector(array $config) |
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{ |
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if (! isset($config['driver'])) { |
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throw new InvalidArgumentException('A driver must be specified.'); |
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} |
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// if ($this->container->bound($key = "db.connector.{$config['driver']}")) { |
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// return $this->container->make($key); |
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// } |
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switch ($config['driver']) { |
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case 'mysql': |
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return new MySqlConnector(); |
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} |
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throw new InvalidArgumentException("Unsupported driver [{$config['driver']}]."); |
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} |
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} |
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.