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<?php
class Logger {
/** @var Logger|null */
private static $instance;
/** @var Logger_Adapter|null */
private $adapter;
const LOG_DEST_SQL = "sql";
const LOG_DEST_STDOUT = "stdout";
const LOG_DEST_SYSLOG = "syslog";
const ERROR_NAMES = [
1 => 'E_ERROR',
2 => 'E_WARNING',
4 => 'E_PARSE',
8 => 'E_NOTICE',
16 => 'E_CORE_ERROR',
32 => 'E_CORE_WARNING',
64 => 'E_COMPILE_ERROR',
128 => 'E_COMPILE_WARNING',
256 => 'E_USER_ERROR',
512 => 'E_USER_WARNING',
1024 => 'E_USER_NOTICE',
2048 => 'E_STRICT',
4096 => 'E_RECOVERABLE_ERROR',
8192 => 'E_DEPRECATED',
16384 => 'E_USER_DEPRECATED',
32767 => 'E_ALL'];
static function log_error(int $errno, string $errstr, string $file, int $line, string $context): bool {
return self::get_instance()->_log_error($errno, $errstr, $file, $line, $context);
}
private function _log_error(int $errno, string $errstr, string $file, int $line, string $context): bool {
//if ($errno == E_NOTICE) return false;
if ($this->adapter)
return $this->adapter->log_error($errno, $errstr, $file, $line, $context);
else
return false;
}
static function log(int $errno, string $errstr, string $context = ""): bool {
return self::get_instance()->_log($errno, $errstr, $context);
}
private function _log(int $errno, string $errstr, string $context = ""): bool {
if ($this->adapter)
return $this->adapter->log_error($errno, $errstr, '', 0, $context);
else
return user_error($errstr, $errno);
}
private function __clone() {
//
}
function __construct() {
switch (Config::get(Config::LOG_DESTINATION)) {
case self::LOG_DEST_SQL:
$this->adapter = new Logger_SQL();
break;
case self::LOG_DEST_SYSLOG:
$this->adapter = new Logger_Syslog();
break;
case self::LOG_DEST_STDOUT:
$this->adapter = new Logger_Stdout();
break;
default:
$this->adapter = null;
}
if ($this->adapter && !implements_interface($this->adapter, "Logger_Adapter"))
user_error("Adapter for LOG_DESTINATION: " . Config::LOG_DESTINATION . " does not implement required interface.", E_USER_ERROR);
}
private static function get_instance() : Logger {
if (self::$instance == null)
self::$instance = new self();
return self::$instance;
}
static function get() : Logger {
user_error("Please don't use Logger::get(), call Logger::log(...) instead.", E_USER_DEPRECATED);
return self::get_instance();
}
}
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