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<?php |
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namespace Graze\Morphism; |
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use Doctrine\DBAL\Configuration; |
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use Doctrine\DBAL\Connection; |
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use Doctrine\DBAL\DBALException; |
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use Doctrine\DBAL\DriverManager; |
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use RuntimeException; |
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use Symfony\Component\Yaml\Parser; |
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/** |
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* A parser for config files |
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*/ |
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class Config |
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{ |
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/** @var array */ |
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private $entries = []; |
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/** @var string */ |
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private $path; |
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/** |
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* Constructor |
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* |
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* @param string $path Path to config file. |
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*/ |
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public function __construct($path) |
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{ |
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$this->path = $path; |
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} |
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/** |
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* Parse the config file provided in the constructor. |
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*/ |
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public function parse() |
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{ |
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if (!file_exists($this->path)) { |
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throw new RuntimeException("Specified config file does not exist: {$this->path}"); |
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} |
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$parser = new Parser(); |
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$config = $parser->parse(file_get_contents($this->path)); |
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if (!isset($config['databases'])) { |
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throw new RuntimeException("Missing databases section in '{$this->path}'"); |
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} |
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$entries = []; |
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foreach ($config['databases'] as $connectionName => $entry) { |
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if (empty($entry['morphism']['enable'])) { |
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continue; |
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} |
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$morphism = $entry['morphism']; |
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unset($entry['morphism']); |
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if (!isset($entry['dbname'])) { |
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$entry['dbname'] = $connectionName; |
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} |
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$matchTables = []; |
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foreach (['include', 'exclude'] as $key) { |
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$regex = ''; |
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if (!empty($morphism["{$key}"])) { |
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$regex = '/^(' . implode('|', $morphism["{$key}"]) . ')$/'; |
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} |
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$matchTables[$key] = $regex; |
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} |
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$schemaDefinitionPaths = $morphism['schemaDefinitionPath']; |
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if (!$schemaDefinitionPaths) { |
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$schemaDefinitionPaths = 'schema/'.$connectionName; |
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} |
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if (!is_array($schemaDefinitionPaths)) { |
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$schemaDefinitionPaths = [ $schemaDefinitionPaths ]; |
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} |
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$entries[$connectionName] = [ |
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'connection' => $entry, |
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'morphism' => [ |
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'matchTables' => $matchTables, |
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'schemaDefinitionPath' => $schemaDefinitionPaths, |
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], |
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]; |
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} |
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$this->entries = $entries; |
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} |
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/** |
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* Returns the parameters to open the named database connection, suitable |
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* for passing to \Doctrine\DBAL\DriverManager::getConnection(). |
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* |
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* Some subset of these parameters will be returned: |
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* |
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* 'driver' => $pdo_driver |
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* 'dbname' => $dbname |
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* 'user' => $user |
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* 'password' => $password |
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* 'host' => $host |
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* 'port' => $port |
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* 'unix_socket' => $socket |
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* |
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* @param string $connectionName Name of the connection to look up |
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* @return array ['connection' => [$param => $value, ...], 'morphism' => [ ... ] ] |
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*/ |
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public function getEntry($connectionName) |
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{ |
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if (!isset($this->entries[$connectionName])) { |
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throw new RuntimeException("Unknown connection '$connectionName'"); |
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} |
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return $this->entries[$connectionName]; |
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} |
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/** |
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* Returns a new database connection using the parameters named by |
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* connectionName. |
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* |
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* @param string $connectionName |
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* @return Connection |
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* @throws DBALException |
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*/ |
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public function getConnection($connectionName) |
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{ |
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$entry = $this->getEntry($connectionName); |
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$dbalConfig = new Configuration(); |
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return DriverManager::getConnection($entry['connection'], $dbalConfig); |
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} |
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/** |
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* Returns the names of all the connections specified in the config file. |
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* |
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* @return string[] |
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*/ |
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public function getConnectionNames() |
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{ |
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return array_keys($this->entries); |
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} |
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} |
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graze /
morphism
