<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\HttpKernel\Log; use Psr\Log\AbstractLogger; use Psr\Log\InvalidArgumentException; use Psr\Log\LogLevel; /** * Minimalist PSR-3 logger designed to write in stderr or any other stream. * * @author Kévin Dunglas <dunglas@gmail.com> */ class Logger extends AbstractLogger { private const LEVELS = [ LogLevel::DEBUG => 0, LogLevel::INFO => 1, LogLevel::NOTICE => 2, LogLevel::WARNING => 3, LogLevel::ERROR => 4, LogLevel::CRITICAL => 5, LogLevel::ALERT => 6, LogLevel::EMERGENCY => 7, ]; private $minLevelIndex; private $formatter; /** @var resource|null */ private $handle; /** * @param string|resource|null $output */ public function __construct(string $minLevel = null, $output = null, callable $formatter = null) { if (null === $minLevel) { $minLevel = null === $output || 'php://stdout' === $output || 'php://stderr' === $output ? LogLevel::ERROR : LogLevel::WARNING; if (isset($_ENV['SHELL_VERBOSITY']) || isset($_SERVER['SHELL_VERBOSITY'])) { switch ((int) ($_ENV['SHELL_VERBOSITY'] ?? $_SERVER['SHELL_VERBOSITY'])) { case -1: $minLevel = LogLevel::ERROR; break; case 1: $minLevel = LogLevel::NOTICE; break; case 2: $minLevel = LogLevel::INFO; break; case 3: $minLevel = LogLevel::DEBUG; break; } } } if (!isset(self::LEVELS[$minLevel])) { throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $minLevel)); } $this->minLevelIndex = self::LEVELS[$minLevel]; $this->formatter = $formatter ?: [$this, 'format']; if ($output && false === $this->handle = \is_resource($output) ? $output : @fopen($output, 'a')) { throw new InvalidArgumentException(sprintf('Unable to open "%s".', $output)); } } /** * {@inheritdoc} * * @return void */ public function log($level, $message, array $context = []) { if (!isset(self::LEVELS[$level])) { throw new InvalidArgumentException(sprintf('The log level "%s" does not exist.', $level)); } if (self::LEVELS[$level] < $this->minLevelIndex) { return; } $formatter = $this->formatter; if ($this->handle) { @fwrite($this->handle, $formatter($level, $message, $context)); } else { error_log($formatter($level, $message, $context, false)); } } private function format(string $level, string $message, array $context, bool $prefixDate = true): string { if (str_contains($message, '{')) { $replacements = []; foreach ($context as $key => $val) { if (null === $val || is_scalar($val) || (\is_object($val) && method_exists($val, '__toString'))) { $replacements["{{$key}}"] = $val; } elseif ($val instanceof \DateTimeInterface) { $replacements["{{$key}}"] = $val->format(\DateTime::RFC3339); } elseif (\is_object($val)) { $replacements["{{$key}}"] = '[object '.\get_class($val).']'; } else { $replacements["{{$key}}"] = '['.\gettype($val).']'; } } $message = strtr($message, $replacements); } $log = sprintf('[%s] %s', $level, $message).\PHP_EOL; if ($prefixDate) { $log = date(\DateTime::RFC3339).' '.$log; } return $log; } }