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<?php
namespace Drupal\Core\Logger;
use Drupal\Core\StringTranslation\TranslatableMarkup;
/**
* @defgroup logging_severity_levels Logging severity levels
* @{
* Logging severity levels as defined in RFC 5424.
*
* The constant definitions of this class correspond to the logging severity
* levels defined in RFC 5424, section 4.1.1. PHP supplies predefined LOG_*
* constants for use in the syslog() function, but their values on Windows
* builds do not correspond to RFC 5424. The associated PHP bug report was
* closed with the comment, "And it's also not a bug, as Windows just have less
* log levels," and "So the behavior you're seeing is perfectly normal."
*
* @see http://tools.ietf.org/html/rfc5424
* @see http://bugs.php.net/bug.php?id=18090
* @see http://php.net/manual/function.syslog.php
* @see http://php.net/manual/network.constants.php
* @see self::getLevels()
*
* @} End of "defgroup logging_severity_levels".
*/
/**
* Defines various logging severity levels.
*
* @ingroup logging_severity_levels
*/
class RfcLogLevel {
/**
* Log message severity -- Emergency: system is unusable.
*/
const EMERGENCY = 0;
/**
* Log message severity -- Alert: action must be taken immediately.
*/
const ALERT = 1;
/**
* Log message severity -- Critical conditions.
*/
const CRITICAL = 2;
/**
* Log message severity -- Error conditions.
*/
const ERROR = 3;
/**
* Log message severity -- Warning conditions.
*/
const WARNING = 4;
/**
* Log message severity -- Normal but significant conditions.
*/
const NOTICE = 5;
/**
* Log message severity -- Informational messages.
*/
const INFO = 6;
/**
* Log message severity -- Debug-level messages.
*/
const DEBUG = 7;
/**
* An array with the severity levels as keys and labels as values.
*
* @var array
*/
protected static $levels;
/**
* Returns a list of severity levels, as defined in RFC 5424.
*
* @return array
* Array of the possible severity levels for log messages.
*
* @see http://tools.ietf.org/html/rfc5424
* @ingroup logging_severity_levels
*/
public static function getLevels() {
if (!static::$levels) {
static::$levels = [
static::EMERGENCY => new TranslatableMarkup('Emergency'),
static::ALERT => new TranslatableMarkup('Alert'),
static::CRITICAL => new TranslatableMarkup('Critical'),
static::ERROR => new TranslatableMarkup('Error'),
static::WARNING => new TranslatableMarkup('Warning'),
static::NOTICE => new TranslatableMarkup('Notice'),
static::INFO => new TranslatableMarkup('Info'),
static::DEBUG => new TranslatableMarkup('Debug'),
];
}
return static::$levels;
}
}