php - Symfony 2.7 缓存 :clear command checks every database connection

Question

我刚刚升级到 symfony 2.7，但有一个烦人的行为。

我的 config.yml 中的一些连接是可选的，并且描述了并非打算在每个 prod 实例中使用的外部数据库。

当执行 cache:clear 时，似乎现在每个连接都被检查了，即使我不希望它们在特定服务器上处于事件状态。

设置--no-warmup 选项时，有一半时间出现问题

php app/console cache:clear --env=prod --no-warmup --verbose

[Doctrine\DBAL\Exception\ConnectionException]
An exception occured in driver: SQLSTATE[42000] [1049] Unknown database 'bal_syncrho_database'

Exception trace: () at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php:103 Doctrine\DBAL\Driver\AbstractMySQLDriver->convertException() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/DBALException.php:133 Doctrine\DBAL\DBALException::driverException() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php:47 Doctrine\DBAL\Driver\PDOMySql\Driver->connect() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php:360 Doctrine\DBAL\Connection->connect() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php:429 Doctrine\DBAL\Connection->getDatabasePlatformVersion() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php:389 Doctrine\DBAL\Connection->detectDatabasePlatform() at /var/www/ror3/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php:328 Doctrine\DBAL\Connection->getDatabasePlatform() at /var/www/ror3/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php:763 Doctrine\ORM\Mapping\ClassMetadataFactory->getTargetPlatform() at /var/www/ror3/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php:616 Doctrine\ORM\Mapping\ClassMetadataFactory->completeIdGeneratorMapping() at /var/www/ror3/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php:174 Doctrine\ORM\Mapping\ClassMetadataFactory->doLoadMetadata() at /var/www/ror3/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:332 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->loadMetadata() at /var/www/ror3/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php:78 Doctrine\ORM\Mapping\ClassMetadataFactory->loadMetadata() at /var/www/ror3/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:216 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getMetadataFor() at /var/www/ror3/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php:115 Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory->getAllMetadata() at /var/www/ror3/vendor/symfony/symfony/src/Symfony/Bridge/Doctrine/CacheWarmer/ProxyCacheWarmer.php:69 Symfony\Bridge\Doctrine\CacheWarmer\ProxyCacheWarmer->warmUp() at /var/www/ror3/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/CacheWarmer/CacheWarmerAggregate.php:48 Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerAggregate->warmUp() at /var/www/ror3/app/bootstrap.php.cache:2641 Symfony\Component\HttpKernel\Kernel->initializeContainer() at /var/www/ror3/app/bootstrap.php.cache:2411 Symfony\Component\HttpKernel\Kernel->boot() at /var/www/ror3/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php:70 Symfony\Bundle\FrameworkBundle\Console\Application->doRun() at /var/www/ror3/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:120 Symfony\Component\Console\Application->run() at
/var/www/ror3/app/console:27

Answer 1

Doctrine 正在尝试确定数据库平台版本。

您可以通过添加 Doctrine DBAL Configuration 来避免这种行为。服务器版本。来自文档:

The server_version option was added in Doctrine DBAL 2.5, which is used by DoctrineBundle 1.3. The value of this option should match your database server version (use postgres -V or psql -V command to find your PostgreSQL version and mysql -V to get your MySQL version).

If you don't define this option and you haven't created your database yet, you may get PDOException errors because Doctrine will try to guess the database server version automatically and none is available.

例如:

#config.yml

doctrine:
    dbal:
    ...
        server_version:       5.6

希望有帮助