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<?php
namespace MediaWiki\Installer\Task;
use MediaWiki\Config\Config;
use MediaWiki\Installer\ConnectionStatus;
use MediaWiki\MainConfigNames;
use Wikimedia\Rdbms\DatabaseDomain;
use Wikimedia\Rdbms\DBConnectionError;
use Wikimedia\Rdbms\IMaintainableDatabase;
use Wikimedia\Rdbms\LBFactory;
/**
* A task context for use in installPreConfigured.php
*
* @internal
*/
class AddWikiTaskContext implements ITaskContext {
/** @var Config */
private $config;
/** @var LBFactory */
private $lbFactory;
/** @var array */
private $configOverrides = [];
/** @var array */
private $options = [];
/** @var array */
private $provisions = [];
public function __construct( Config $config, LBFactory $lbFactory ) {
$this->config = $config;
$this->lbFactory = $lbFactory;
}
public function getConfigVar( string $name ) {
return $this->configOverrides[$name] ?? $this->config->get( $name );
}
public function getOption( string $name ) {
return $this->options[$name] ?? null;
}
public function getConnection( $type = self::CONN_DONT_KNOW ): ConnectionStatus {
$localDomain = $this->getDomain();
$lb = $this->lbFactory->getLoadBalancer( $localDomain );
if ( $type === self::CONN_CREATE_DATABASE || $type === self::CONN_CREATE_SCHEMA ) {
$connectDomain = '';
} else {
$connectDomain = $localDomain->getId();
}
$status = new ConnectionStatus;
try {
$conn = $lb->getConnection( DB_PRIMARY, [], $connectDomain );
if ( $conn instanceof IMaintainableDatabase ) {
$status->setDB( $conn );
} else {
throw new \RuntimeException( 'Invalid DB connection class' );
}
$conn->setSchemaVars( $this->getSchemaVars() );
} catch ( DBConnectionError $e ) {
$status->fatal( 'config-connection-error', $e->getMessage() );
}
return $status;
}
private function getDomain(): DatabaseDomain {
return new DatabaseDomain(
$this->getConfigVar( MainConfigNames::DBname ),
$this->getConfigVar( MainConfigNames::DBmwschema ),
$this->getConfigVar( MainConfigNames::DBprefix ) ?? ''
);
}
/**
* Get schema variable replacements to be applied to SQL files
*
* @return array
*/
public function getSchemaVars() {
$tableOptions = $this->getConfigVar( MainConfigNames::DBTableOptions );
if ( str_contains( $tableOptions, 'TYPE=' ) ) {
throw new \RuntimeException( '$wgDBTableOptions contains obsolete TYPE option, ' .
'replace it with ENGINE' );
}
if ( str_contains( $tableOptions, 'CHARSET=mysql4' ) ) {
throw new \RuntimeException( '$wgDBTableOptions contains invalid CHARSET option' );
}
return [ 'wgDBTableOptions' => $tableOptions ];
}
public function getDbType(): string {
return $this->getConfigVar( MainConfigNames::DBtype );
}
public function provide( string $name, $value ) {
$this->provisions[$name] = $value;
}
public function getProvision( string $name ) {
if ( isset( $this->provisions[$name] ) ) {
return $this->provisions[$name];
} else {
throw new \RuntimeException( "Can't find provided data \"$name\"" );
}
}
/**
* Override a configuration variable
*
* @param string $name
* @param mixed $value
*/
public function setConfigVar( string $name, $value ) {
$this->configOverrides[$name] = $value;
}
/**
* Set an installer option
*
* @param string $name
* @param mixed $value
*/
public function setOption( string $name, $value ) {
$this->options[$name] = $value;
}
}