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<?php /** * @link https://www.yiiframework.com/ * @copyright Copyright (c) 2008 Yii Software LLC * @license https://www.yiiframework.com/license/ */ namespace yii\log; use Yii; use yii\base\InvalidConfigException; use yii\db\Connection; use yii\db\Exception; use yii\di\Instance; use yii\helpers\VarDumper; /** * DbTarget stores log messages in a database table. * * The database connection is specified by [[db]]. Database schema could be initialized by applying migration: * * ``` * yii migrate --migrationPath=@yii/log/migrations/ * ``` * * If you don't want to use migration and need SQL instead, files for all databases are in migrations directory. * * You may change the name of the table used to store the data by setting [[logTable]]. * * @author Qiang Xue <qiang.xue@gmail.com> * @since 2.0 */ class DbTarget extends Target { /** * @var Connection|array|string the DB connection object or the application component ID of the DB connection. * After the DbTarget object is created, if you want to change this property, you should only assign it * with a DB connection object. * Starting from version 2.0.2, this can also be a configuration array for creating the object. */ public $db = 'db'; /** * @var string name of the DB table to store cache content. Defaults to "log". */ public $logTable = '{{%log}}'; /** * Initializes the DbTarget component. * This method will initialize the [[db]] property to make sure it refers to a valid DB connection. * @throws InvalidConfigException if [[db]] is invalid. */ public function init() { parent::init(); $this->db = Instance::ensure($this->db, Connection::className()); } /** * Stores log messages to DB. * Starting from version 2.0.14, this method throws LogRuntimeException in case the log can not be exported. * @throws Exception * @throws LogRuntimeException */ public function export() { if ($this->db->getTransaction()) { // create new database connection, if there is an open transaction // to ensure insert statement is not affected by a rollback $this->db = clone $this->db; } $tableName = $this->db->quoteTableName($this->logTable); $sql = "INSERT INTO $tableName ([[level]], [[category]], [[log_time]], [[prefix]], [[message]]) VALUES (:level, :category, :log_time, :prefix, :message)"; $command = $this->db->createCommand($sql); foreach ($this->messages as $message) { list($text, $level, $category, $timestamp) = $message; if (!is_string($text)) { // exceptions may not be serializable if in the call stack somewhere is a Closure if ($text instanceof \Exception || $text instanceof \Throwable) { $text = (string) $text; } else { $text = VarDumper::export($text); } } if ($command->bindValues([ ':level' => $level, ':category' => $category, ':log_time' => $timestamp, ':prefix' => $this->getMessagePrefix($message), ':message' => $text, ])->execute() > 0) { continue; } throw new LogRuntimeException('Unable to export log through database!'); } } }