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<?php |
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namespace ByJG\DbMigration; |
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use ByJG\AnyDataset\DbDriverInterface; |
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use ByJG\AnyDataset\Factory; |
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use ByJG\DbMigration\Database\DatabaseInterface; |
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use ByJG\DbMigration\Exception\DatabaseIsIncompleteException; |
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use ByJG\Util\Uri; |
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class Migration |
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{ |
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/** |
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* @var Uri |
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*/ |
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protected $uri; |
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/** |
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* @var string |
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*/ |
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protected $_folder; |
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/** |
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* @var DbDriverInterface |
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*/ |
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protected $dbDriver; |
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/** |
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* @var DatabaseInterface |
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*/ |
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protected $_dbCommand; |
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/** |
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* @var Callable |
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*/ |
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protected $_callableProgress; |
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/** |
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* Migration constructor. |
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* |
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* @param Uri $uri |
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* @param string $_folder |
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*/ |
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public function __construct(Uri $uri, $_folder) |
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{ |
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$this->uri = $uri; |
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$this->_folder = $_folder; |
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if (!file_exists($this->_folder . '/base.sql')) { |
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throw new \InvalidArgumentException("Migration script '{$this->_folder}/base.sql' not found"); |
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} |
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} |
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/** |
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* @return DbDriverInterface |
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*/ |
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public function getDbDriver() |
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{ |
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if (is_null($this->dbDriver)) { |
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$this->dbDriver = Factory::getDbRelationalInstance($this->uri->__toString()); |
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} |
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return $this->dbDriver; |
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} |
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/** |
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* @return DatabaseInterface |
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*/ |
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public function getDbCommand() |
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{ |
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if (is_null($this->_dbCommand)) { |
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$class = $this->getDatabaseClassName(); |
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$this->_dbCommand = new $class($this->getDbDriver()); |
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} |
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return $this->_dbCommand; |
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} |
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protected function getDatabaseClassName() |
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{ |
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return "\\ByJG\\DbMigration\\Database\\" . ucfirst($this->uri->getScheme()) . "Database"; |
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} |
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/** |
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* Get the full path and name of the "base.sql" script |
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* |
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* @return string |
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*/ |
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public function getBaseSql() |
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{ |
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return $this->_folder . "/base.sql"; |
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} |
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/** |
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* Get the full path script based on the version |
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* |
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* @param $version |
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* @param $increment |
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* @return string |
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*/ |
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public function getMigrationSql($version, $increment) |
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{ |
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// I could use the GLOB_BRACE but it is not supported on ALPINE distros. |
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// So, I have to call multiple times to simulate the braces. |
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if (intval($version) != $version) { |
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throw new \InvalidArgumentException("Version '$version' should be a integer number"); |
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} |
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$version = intval($version); |
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$filePattern = $this->_folder |
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. "/migrations" |
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. "/" . ($increment < 0 ? "down" : "up") |
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. "/*%s.sql"; |
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$result = array_merge( |
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glob(sprintf($filePattern, "$version")), |
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glob(sprintf($filePattern, "$version-dev")) |
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); |
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// Valid values are 0 or 1 |
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if (count($result) > 1) { |
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throw new \InvalidArgumentException("You have two files with the same version $version number"); |
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} |
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foreach ($result as $file) { |
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if (intval(basename($file)) === $version) { |
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return $file; |
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} |
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} |
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return null; |
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} |
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/** |
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* Create the database it it does not exists. Does not use this methos in a production environment; |
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*/ |
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public function prepareEnvironment() |
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{ |
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$class = $this->getDatabaseClassName(); |
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$class::prepareEnvironment($this->uri); |
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} |
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/** |
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* Restore the database using the "base.sql" script and run all migration scripts |
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* Note: the database must exists. If dont exist run the method prepareEnvironment. |
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* |
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* @param int $upVersion |
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*/ |
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public function reset($upVersion = null) |
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{ |
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if ($this->_callableProgress) { |
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call_user_func_array($this->_callableProgress, ['reset', 0]); |
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} |
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$this->getDbCommand()->dropDatabase(); |
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$this->getDbCommand()->createDatabase(); |
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$this->getDbCommand()->createVersion(); |
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$this->getDbCommand()->executeSql(file_get_contents($this->getBaseSql())); |
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$this->getDbCommand()->setVersion(0, 'complete'); |
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$this->up($upVersion); |
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} |
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public function createVersion() |
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{ |
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$this->getDbCommand()->createVersion(); |
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} |
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public function updateTableVersion() |
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{ |
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$this->getDbCommand()->updateVersionTable(); |
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} |
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/** |
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* Get the current database version |
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* |
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* @return int |
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*/ |
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public function getCurrentVersion() |
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{ |
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return $this->getDbCommand()->getVersion(); |
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} |
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/** |
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* @param $currentVersion |
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* @param $upVersion |
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* @param $increment |
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* @return bool |
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*/ |
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protected function canContinue($currentVersion, $upVersion, $increment) |
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{ |
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$existsUpVersion = ($upVersion !== null); |
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$compareVersion = |
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intval($currentVersion) < intval($upVersion) |
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? -1 |
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: ( |
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intval($currentVersion) > intval($upVersion) |
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? 1 |
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: 0 |
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); |
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return !($existsUpVersion && ($compareVersion === intval($increment))); |
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} |
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/** |
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* Method for execute the migration. |
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* |
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* @param int $upVersion |
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* @param int $increment Can accept 1 for UP or -1 for down |
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* @param bool $force |
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* @throws \ByJG\DbMigration\Exception\DatabaseIsIncompleteException |
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*/ |
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protected function migrate($upVersion, $increment, $force) |
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{ |
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$versionInfo = $this->getCurrentVersion(); |
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$currentVersion = intval($versionInfo['version']) + $increment; |
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if (strpos($versionInfo['status'], 'partial') !== false && !$force) { |
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throw new DatabaseIsIncompleteException('Database was not fully updated. Use --force for migrate.'); |
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} |
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while ($this->canContinue($currentVersion, $upVersion, $increment) |
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&& file_exists($file = $this->getMigrationSql($currentVersion, $increment)) |
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) { |
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if ($this->_callableProgress) { |
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call_user_func_array($this->_callableProgress, ['migrate', $currentVersion]); |
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} |
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$this->getDbCommand()->setVersion($currentVersion, 'partial ' . ($increment>0 ? 'up' : 'down')); |
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$this->getDbCommand()->executeSql(file_get_contents($file)); |
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$this->getDbCommand()->setVersion($currentVersion, 'complete'); |
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$currentVersion = $currentVersion + $increment; |
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} |
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} |
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/** |
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* Run all scripts to up the database version from current up to latest version or the specified version. |
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* |
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* @param int $upVersion |
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* @param bool $force |
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*/ |
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public function up($upVersion = null, $force = false) |
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{ |
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$this->migrate($upVersion, 1, $force); |
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} |
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/** |
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* Run all scripts to up or down the database version from current up to latest version or the specified version. |
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* |
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* @param int $upVersion |
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* @param bool $force |
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*/ |
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public function update($upVersion = null, $force = false) |
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{ |
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$versionInfo = $this->getCurrentVersion(); |
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$version = intval($versionInfo['version']); |
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$increment = 1; |
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if ($upVersion !== null && $upVersion < $version) { |
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$increment = -1; |
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} |
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$this->migrate($upVersion, $increment, $force); |
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} |
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/** |
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* Run all scripts to down the database version from current version up to the specified version. |
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* |
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* @param int $upVersion |
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* @param bool $force |
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*/ |
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public function down($upVersion, $force = false) |
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{ |
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$this->migrate($upVersion, -1, $force); |
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} |
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public function addCallbackProgress(Callable $callable) |
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{ |
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$this->_callableProgress = $callable; |
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} |
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} |
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