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<?php |
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namespace Doctrine\DBAL\Tools\Console\Command; |
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use Doctrine\DBAL\Connection; |
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use RuntimeException; |
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use Symfony\Component\Console\Command\Command; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Input\InputOption; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use Throwable; |
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use function is_numeric; |
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use function sleep; |
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use function sprintf; |
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class PingCommand extends Command |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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protected static $defaultName = 'dbal:ping'; |
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protected function configure() |
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{ |
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$this |
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->setDescription('Check db is available') |
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->addOption('limit', null, InputOption::VALUE_REQUIRED, 'Max number of pings to try', '1') |
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->addOption('sleep', null, InputOption::VALUE_REQUIRED, 'Length of time (seconds) to sleep between pings', '1') |
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->setHelp(<<<EOT |
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Connects to the database to check if it is accessible. |
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The exit code will be non-zero when the connection fails. |
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EOT |
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); |
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} |
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protected function execute(InputInterface $input, OutputInterface $output) : int |
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{ |
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$limit = $input->getOption('limit'); |
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if (! is_numeric($limit) || $limit < 0) { |
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throw new RuntimeException('Option "limit" must contain a positive integer value'); |
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} |
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$sleep = $input->getOption('sleep'); |
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if (! is_numeric($sleep) || $sleep < 0) { |
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throw new RuntimeException('Option "sleep" must contain a positive integer value'); |
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} |
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return $this->waitForPing($this->getHelper('db')->getConnection(), (int) $limit, (int) $sleep, $output); |
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} |
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/** |
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* @return int > 0 for error |
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*/ |
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private function waitForPing(Connection $conn, int $limit, int $sleep, OutputInterface $output) : int |
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{ |
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while (true) { |
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$last = $this->ping($conn, $output); |
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if ($last === 0 || --$limit <= 0) { |
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break; |
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} |
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sleep($sleep); |
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} |
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return $last; |
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} |
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/** |
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* @return int > 0 for error |
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*/ |
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private function ping(Connection $conn, OutputInterface $output) : int |
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{ |
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try { |
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if ($conn->ping()) { |
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return 0; |
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} |
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$output->writeln('Ping failed'); |
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return 1; |
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} catch (Throwable $e) { |
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$output->writeln(sprintf('Ping failed: <error>%s</error>', $e->getMessage())); |
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return 2; |
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} |
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} |
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} |
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doctrine /
dbal
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