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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Bridge\Monolog\Handler;
use Monolog\Formatter\FormatterInterface;
use Monolog\Formatter\LineFormatter;
use Monolog\Handler\AbstractProcessingHandler;
use Monolog\Logger;
use Symfony\Bridge\Monolog\Formatter\ConsoleFormatter;
use Symfony\Component\Console\ConsoleEvents;
use Symfony\Component\Console\Event\ConsoleCommandEvent;
use Symfony\Component\Console\Event\ConsoleTerminateEvent;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\VarDumper\Dumper\CliDumper;
/**
* Writes logs to the console output depending on its verbosity setting.
*
* It is disabled by default and gets activated as soon as a command is executed.
* Instead of listening to the console events, the output can also be set manually.
*
* The minimum logging level at which this handler will be triggered depends on the
* verbosity setting of the console output. The default mapping is:
* - OutputInterface::VERBOSITY_NORMAL will show all WARNING and higher logs
* - OutputInterface::VERBOSITY_VERBOSE (-v) will show all NOTICE and higher logs
* - OutputInterface::VERBOSITY_VERY_VERBOSE (-vv) will show all INFO and higher logs
* - OutputInterface::VERBOSITY_DEBUG (-vvv) will show all DEBUG and higher logs, i.e. all logs
*
* This mapping can be customized with the $verbosityLevelMap constructor parameter.
*
* @author Tobias Schultze <http://tobion.de>
*/
class ConsoleHandler extends AbstractProcessingHandler implements EventSubscriberInterface
{
private $output;
private $verbosityLevelMap = [
OutputInterface::VERBOSITY_QUIET => Logger::ERROR,
OutputInterface::VERBOSITY_NORMAL => Logger::WARNING,
OutputInterface::VERBOSITY_VERBOSE => Logger::NOTICE,
OutputInterface::VERBOSITY_VERY_VERBOSE => Logger::INFO,
OutputInterface::VERBOSITY_DEBUG => Logger::DEBUG,
];
private $consoleFormatterOptions;
/**
* @param OutputInterface|null $output The console output to use (the handler remains disabled when passing null
* until the output is set, e.g. by using console events)
* @param bool $bubble Whether the messages that are handled can bubble up the stack
* @param array $verbosityLevelMap Array that maps the OutputInterface verbosity to a minimum logging
* level (leave empty to use the default mapping)
*/
public function __construct(?OutputInterface $output = null, bool $bubble = true, array $verbosityLevelMap = [], array $consoleFormatterOptions = [])
{
parent::__construct(Logger::DEBUG, $bubble);
$this->output = $output;
if ($verbosityLevelMap) {
$this->verbosityLevelMap = $verbosityLevelMap;
}
$this->consoleFormatterOptions = $consoleFormatterOptions;
}
/**
* {@inheritdoc}
*/
public function isHandling(array $record): bool
{
return $this->updateLevel() && parent::isHandling($record);
}
/**
* {@inheritdoc}
*/
public function handle(array $record): bool
{
// we have to update the logging level each time because the verbosity of the
// console output might have changed in the meantime (it is not immutable)
return $this->updateLevel() && parent::handle($record);
}
/**
* Sets the console output to use for printing logs.
*/
public function setOutput(OutputInterface $output)
{
$this->output = $output;
}
/**
* Disables the output.
*/
public function close(): void
{
$this->output = null;
parent::close();
}
/**
* Before a command is executed, the handler gets activated and the console output
* is set in order to know where to write the logs.
*/
public function onCommand(ConsoleCommandEvent $event)
{
$output = $event->getOutput();
if ($output instanceof ConsoleOutputInterface) {
$output = $output->getErrorOutput();
}
$this->setOutput($output);
}
/**
* After a command has been executed, it disables the output.
*/
public function onTerminate(ConsoleTerminateEvent $event)
{
$this->close();
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents()
{
return [
ConsoleEvents::COMMAND => ['onCommand', 255],
ConsoleEvents::TERMINATE => ['onTerminate', -255],
];
}
/**
* {@inheritdoc}
*/
protected function write(array $record): void
{
// at this point we've determined for sure that we want to output the record, so use the output's own verbosity
$this->output->write((string) $record['formatted'], false, $this->output->getVerbosity());
}
/**
* {@inheritdoc}
*/
protected function getDefaultFormatter(): FormatterInterface
{
if (!class_exists(CliDumper::class)) {
return new LineFormatter();
}
if (!$this->output) {
return new ConsoleFormatter($this->consoleFormatterOptions);
}
return new ConsoleFormatter(array_replace([
'colors' => $this->output->isDecorated(),
'multiline' => OutputInterface::VERBOSITY_DEBUG <= $this->output->getVerbosity(),
], $this->consoleFormatterOptions));
}
/**
* Updates the logging level based on the verbosity setting of the console output.
*
* @return bool Whether the handler is enabled and verbosity is not set to quiet
*/
private function updateLevel(): bool
{
if (null === $this->output) {
return false;
}
$verbosity = $this->output->getVerbosity();
if (isset($this->verbosityLevelMap[$verbosity])) {
$this->setLevel($this->verbosityLevelMap[$verbosity]);
} else {
$this->setLevel(Logger::DEBUG);
}
return true;
}
}