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<?php
/**
* TLogRouter, TLogRoute, TFileLogRoute, TEmailLogRoute class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package System.Util
*/
/**
* TFileLogRoute class.
*
* TFileLogRoute records log messages in files.
* The log files are stored under {@link setLogPath LogPath} and the file name
* is specified by {@link setLogFile LogFile}. If the size of the log file is
* greater than {@link setMaxFileSize MaxFileSize} (in kilo-bytes), a rotation
* is performed, which renames the current log file by suffixing the file name
* with '.1'. All existing log files are moved backwards one place, i.e., '.2'
* to '.3', '.1' to '.2'. The property {@link setMaxLogFiles MaxLogFiles}
* specifies how many files to be kept.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package System.Util
* @since 3.0
*/
class TFileLogRoute extends TLogRoute
{
/**
* @var integer maximum log file size
*/
private $_maxFileSize=512; // in KB
/**
* @var integer number of log files used for rotation
*/
private $_maxLogFiles=2;
/**
* @var string directory storing log files
*/
private $_logPath=null;
/**
* @var string log file name
*/
private $_logFile='prado.log';
/**
* @return string directory storing log files. Defaults to application runtime path.
*/
public function getLogPath()
{
if($this->_logPath===null)
$this->_logPath=$this->getApplication()->getRuntimePath();
return $this->_logPath;
}
/**
* @param string directory (in namespace format) storing log files.
* @throws TConfigurationException if log path is invalid
*/
public function setLogPath($value)
{
if(($this->_logPath=Prado::getPathOfNamespace($value))===null || !is_dir($this->_logPath) || !is_writable($this->_logPath))
throw new TConfigurationException('filelogroute_logpath_invalid',$value);
}
/**
* @return string log file name. Defaults to 'prado.log'.
*/
public function getLogFile()
{
return $this->_logFile;
}
/**
* @param string log file name
*/
public function setLogFile($value)
{
$this->_logFile=$value;
}
/**
* @return integer maximum log file size in kilo-bytes (KB). Defaults to 1024 (1MB).
*/
public function getMaxFileSize()
{
return $this->_maxFileSize;
}
/**
* @param integer maximum log file size in kilo-bytes (KB).
* @throws TInvalidDataValueException if the value is smaller than 1.
*/
public function setMaxFileSize($value)
{
$this->_maxFileSize=TPropertyValue::ensureInteger($value);
if($this->_maxFileSize<=0)
throw new TInvalidDataValueException('filelogroute_maxfilesize_invalid');
}
/**
* @return integer number of files used for rotation. Defaults to 2.
*/
public function getMaxLogFiles()
{
return $this->_maxLogFiles;
}
/**
* @param integer number of files used for rotation.
*/
public function setMaxLogFiles($value)
{
$this->_maxLogFiles=TPropertyValue::ensureInteger($value);
if($this->_maxLogFiles<1)
throw new TInvalidDataValueException('filelogroute_maxlogfiles_invalid');
}
/**
* Saves log messages in files.
* @param array list of log messages
*/
protected function processLogs($logs)
{
$logFile=$this->getLogPath().DIRECTORY_SEPARATOR.$this->getLogFile();
if(@filesize($logFile)>$this->_maxFileSize*1024)
$this->rotateFiles();
foreach($logs as $log)
error_log($this->formatLogMessage($log[0],$log[1],$log[2],$log[3]),3,$logFile);
}
/**
* Rotates log files.
*/
protected function rotateFiles()
{
$file=$this->getLogPath().DIRECTORY_SEPARATOR.$this->getLogFile();
for($i=$this->_maxLogFiles;$i>0;--$i)
{
$rotateFile=$file.'.'.$i;
if(is_file($rotateFile))
{
if($i===$this->_maxLogFiles)
unlink($rotateFile);
else
rename($rotateFile,$file.'.'.($i+1));
}
}
if(is_file($file))
rename($file,$file.'.1');
}
}
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