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<?php
namespace SMW\Connection;
use RuntimeException;
/**
* @license GNU GPL v2+
* @since 2.1
*
* @author mwjames
*/
class ConnectionManager {
/**
* By design this variable is static to ensure that ConnectionProvider
* instances are only initialized once per request.
*
* @var array
*/
private static $connectionProviders = [];
/**
* @since 2.1
*
* @param string|null $id
*
* @return mixed
* @throws RuntimeException
*/
public function getConnection( $id = null ) {
return $this->findConnectionProvider( strtolower( $id ) )->getConnection();
}
/**
* @since 2.1
*/
public function releaseConnections() {
foreach ( self::$connectionProviders as $connectionProvider ) {
$connectionProvider->releaseConnection();
}
}
/**
* @since 2.1
*
* @param string $id
* @param ConnectionProvider $connectionProvider
*/
public function registerConnectionProvider( $id, ConnectionProvider $connectionProvider ) {
self::$connectionProviders[strtolower( $id )] = $connectionProvider;
}
/**
* @since 3.0
*
* @param string $id
* @param callable $callback
*/
public function registerCallbackConnection( $id, callable $callback ) {
self::$connectionProviders[strtolower( $id )] = new CallbackConnectionProvider( $callback );
}
private function findConnectionProvider( $id ) {
if ( isset( self::$connectionProviders[$id] ) ) {
return self::$connectionProviders[$id];
}
throw new RuntimeException( "{$id} is missing a registered connection provider" );
}
}
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