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<?php |
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declare(strict_types=1); |
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namespace SKien\XLogger; |
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use Psr\Log\AbstractLogger; |
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use Psr\Log\InvalidArgumentException; |
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use Psr\Log\LogLevel; |
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/** |
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* abstract class for several types of logger. |
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* |
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* Class implements the PSR-3 LoggerInferface through AbstractLogger. |
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* |
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* @package XLogger |
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* @author Stefanius <[email protected]> |
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* @copyright MIT License - see the LICENSE file for details |
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*/ |
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abstract class XLogger extends AbstractLogger |
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{ |
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/** include IP-adress in log item */ |
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const LOG_IP = 0x01; |
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/** include backtrace (caller) in log item */ |
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const LOG_BT = 0x02; |
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/** include user in log item */ |
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const LOG_USER = 0x04; |
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/** include user-agent in log item */ |
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const LOG_UA = 0x08; |
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/** @var int levels to include in the log (bitmask of internal levels) */ |
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protected int $iLogLevel = 0; |
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/** @var int options bitmask */ |
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protected int $iOptions = self::LOG_IP | self::LOG_USER | self::LOG_UA; |
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/** @var string username for logging (if LOG_USER is set) */ |
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protected string $strUser = ''; |
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/** @var string path to store the logfile */ |
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protected string $strPath = '.'; |
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/** @var string filename of the logfile */ |
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protected string $strFilename = ''; |
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/** |
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* Init logging level and remote username (if set). |
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* @see XLogger::setLogLevel() |
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* @param string $level the min. `LogLevel` to be logged |
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*/ |
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public function __construct(string $level = LogLevel::DEBUG) |
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{ |
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$this->setLogLevel($level); |
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// init with remote user, if available |
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$this->strUser = isset($_SERVER["REMOTE_USER"]) ? $_SERVER["REMOTE_USER"] : ''; |
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} |
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/** |
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* Set the level from witch items should be logged. |
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* All entries with a lower level than the specified are ignored. <br/> |
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* The relevance of the defined PSR-3 level from hight to low are: <br/><ul> |
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* <li> EMERGENCY </li> |
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* <li> ALERT </li> |
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* <li> CRITICAL </li> |
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* <li> ERROR </li> |
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* <li> WARNING </li> |
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* <li> NOTICE </li> |
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* <li>INFO </li> |
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* <li> DEBUG </li></ul> |
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* |
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* @param string $strLogLevel the min. `LogLevel` to be logged |
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* @return void |
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*/ |
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public function setLogLevel(string $strLogLevel) : void |
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{ |
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$this->iLogLevel = $this->getIntLevel($strLogLevel); |
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} |
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/** |
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* Set Options for logging. |
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* Use any combination of: <ul> |
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* <li> XLogger::LOG_IP : include IP-adress in log item </li> |
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* <li> XLogger::LOG_BT : include backtrace 'filename (line)' in log item </li> |
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* <li> XLogger::LOG_USER : include user in log item </li> |
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* <li> XLogger::LOG_UA : include user-agent in log item </li></ul> |
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* |
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* @param int $iOptions any combination (bitwise or, '|') of the flags described |
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* @return void |
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*/ |
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public function setOptions(int $iOptions) : void |
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{ |
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$this->iOptions = $iOptions; |
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} |
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/** |
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* Set the username. |
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* @param string $strUser |
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* @return void |
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*/ |
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public function setUser(string $strUser) : void |
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{ |
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$this->strUser = $strUser; |
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} |
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/** |
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* Set the path and filename for the logfile. |
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* In order to be able to assign logfiles chronologically and / or to a user, it is |
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* possible to use placeholders in the file name or path, which are replaced accordingly |
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* before the file is created. |
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* Following placeholders are supported: <br/><ul> |
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* <li> {date} : will be replaced by current date (Format 'YYYY-MM-DD') </li> |
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* <li> {month} : will be replaced by current month (Format 'YYYY-MM') </li> |
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* <li> {year} : will be replaced by current year (Format 'YYYY') </li> |
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* <li> {week} : will be replaced by current ISO-8601 week (Format 'YYYY_WW') </li> |
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* <li> {name} : will be replaced by the username </li></ul> |
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* |
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* > Note: <br/> |
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* > If you use the placeholder for the user name, this have to be set BEFORE the call of |
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* this method. In the username, all characters except A-Z, a-z, 0-9, '_' and '-' are |
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* filtered out (to always get a valid file name)! |
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* @param string $strFullpath |
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* @return void |
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*/ |
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public function setFullpath(string $strFullpath) : void |
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{ |
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$this->closeLogfile(); |
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if (strlen($strFullpath) > 0) { |
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$strFullpath = $this->replacePathPlaceholder($strFullpath); |
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// scrutinizer didn't (or can't...) analyse, that pathinfo returns allways string if the $options param is set! |
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/** @scrutinizer ignore-type */ $this->strPath = pathinfo($strFullpath, PATHINFO_DIRNAME); |
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/** @scrutinizer ignore-type */ $this->strFilename = pathinfo($strFullpath, PATHINFO_BASENAME); |
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} |
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} |
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/** |
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* Set the path for the logfile. |
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* Some placeholders can be used for date/month/year/week. |
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* @param string $strPath |
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* @return void |
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* @see XLogger::setFullpath() |
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*/ |
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public function setPath(string $strPath) : void |
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{ |
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$this->closeLogfile(); |
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$this->strPath = $this->replacePathPlaceholder($strPath); |
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} |
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/** |
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* Set the filename for the logfile. |
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* Some placeholders can be used for date/month/year/week. |
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* @param string $strFilename |
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* @return void |
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* @see XLogger::setFullpath() |
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*/ |
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public function setFilename(string $strFilename) : void |
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{ |
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$this->closeLogfile(); |
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$this->strFilename = $this->replacePathPlaceholder($strFilename); |
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} |
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/** |
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* Get current filename (may be some placeholders are supplemented). |
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* @return string |
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* @see XLogger::setFullpath() |
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*/ |
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public function getFilename() : string |
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{ |
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return $this->strFilename; |
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} |
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/** |
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* Get full path of the logfile. |
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* @return string |
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* @see XLogger::setFullpath() |
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*/ |
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public function getFullpath() : string |
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{ |
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$strFullPath = rtrim($this->strPath, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR . $this->strFilename; |
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return $strFullPath; |
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} |
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/** |
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* may be implemented in extending classes |
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* @internal |
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*/ |
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public function reset() : void |
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{ |
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} |
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/** |
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* Check, if item for requested level should be logged. |
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* @param string $level |
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* @return bool |
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*/ |
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protected function logLevel($level) : bool |
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{ |
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return ($this->iLogLevel <= $this->getIntLevel($level)); |
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} |
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/** |
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* Replace placeholders with the coresponding values. |
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* @param mixed $message string or object implements __toString() method |
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* @param array<string,mixed> $context |
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* @return string |
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*/ |
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protected function replaceContext($message, array $context = []) : string |
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{ |
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// build a replacement array with braces around the context keys |
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$replace = array(); |
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foreach ($context as $key => $val) { |
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// check that the value can be cast to string |
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if (!is_array($val) && (!is_object($val) || method_exists($val, '__toString'))) { |
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$replace['{' . $key . '}'] = $val; |
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} |
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} |
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// interpolate replacement values into the message and return |
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$strMessage = (string)$message; |
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$strMessage = strtr($strMessage, $replace); |
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return $strMessage; |
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} |
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/** |
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* Get the caller from backtrace in format "<filename>(<line>)". |
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* Document root is cut off from the full path. |
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* @return string |
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*/ |
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protected function getCaller() : string |
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{ |
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$strCaller = ''; |
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$aBacktrace = debug_backtrace(); |
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while (($aCaller = array_shift($aBacktrace)) !== null) { |
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// just get latest call outside of the logger interface |
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// if ($aCaller['class'] != get_class() ) { |
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if (!is_subclass_of($aCaller['class'], 'Psr\Log\AbstractLogger')) { |
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break; |
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} |
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} |
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if ($aCaller) { |
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// the base path on server isn't from interest.. |
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$strFile = str_replace($_SERVER['DOCUMENT_ROOT'], '', $aCaller['file']); |
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$strCaller = $strFile . ' (' . $aCaller['line'] . ')'; |
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} |
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return $strCaller; |
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} |
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/** |
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* |
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* @param string $level |
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* @throws InvalidArgumentException |
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* @return int |
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*/ |
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protected function getIntLevel(string $level) : int |
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{ |
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$aLevel = array( |
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LogLevel::EMERGENCY => 7, |
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LogLevel::ALERT => 6, |
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LogLevel::CRITICAL => 5, |
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LogLevel::ERROR => 4, |
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LogLevel::WARNING => 3, |
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LogLevel::NOTICE => 2, |
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LogLevel::INFO => 1, |
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LogLevel::DEBUG => 0 |
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); |
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if (!isset($aLevel[$level])) { |
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throw new InvalidArgumentException("Unknown logging level ($level)"); |
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} |
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return $aLevel[$level]; |
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} |
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/** |
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* Replaces placeholders in path/filename/fullpath. |
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* @see XLogger::setFullPath() |
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* @param string $strPath |
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* @return string |
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*/ |
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protected function replacePathPlaceholder(string $strPath) : string |
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{ |
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$strPath = str_replace('{date}', date('Y-m-d'), $strPath); |
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$strPath = str_replace('{month}', date('Y-m'), $strPath); |
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$strPath = str_replace('{year}', date('Y'), $strPath); |
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$strPath = str_replace('{week}', date('Y_W'), $strPath); |
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$strUser = preg_replace("/[^A-Za-z0-9_-]/", '', $this->strUser) ?? ''; |
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$strPath = str_replace('{name}', $strUser, $strPath); |
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return $strPath; |
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} |
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/** |
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* Has nothing to do in the abstract class... |
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* ...but does not necessarily have to be implemented in extended classes |
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* and is therefore not declared as an abstract at this point. |
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* @return void |
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*/ |
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protected function openLogfile() : void |
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{ |
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} |
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/** |
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* Has nothing to do in the abstract class... |
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* ...but does not necessarily have to be implemented in extended classes |
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* and is therefore not declared as an abstract at this point. |
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* @return void |
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*/ |
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protected function createLogfile() : void |
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{ |
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} |
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/** |
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* Has nothing to do in the abstract class... |
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* ...but does not necessarily have to be implemented in extended classes |
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* and is therefore not declared as an abstract at this point. |
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* @return void |
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*/ |
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protected function closeLogfile() : void |
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{ |
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} |
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} |
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