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<?php |
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/** |
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* Logging utility for Erdiko |
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* |
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* @package erdiko/core |
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* @copyright 2012-2017 Arroyo Labs, Inc. http://www.arroyolabs.com |
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* @author Varun Brahme |
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* @author Coleman Tung |
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* @author John Arroyo <[email protected]> |
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*/ |
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namespace erdiko\core; |
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use erdiko\core\datasource\File; |
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use \Psr\Log\LoggerInterface; |
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use \Psr\Log\InvalidArgumentException; |
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use \Psr\Log\LogLevel; |
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class Logger extends File implements LoggerInterface |
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{ |
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/** Log files */ |
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protected $_logFiles = array( |
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"default" => "system.log", |
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); |
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protected $_defaultPath = '/var/logs'; |
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/** |
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* Constructor |
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* |
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* @param array $logFiles |
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* @param string $logDir fully qualified path or a path relative to the erdiko root |
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*/ |
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public function __construct($logFiles = array(), $logDir = null) |
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{ |
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// Set the log files |
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if (!empty($logFiles)) { |
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$this->_logFiles = array_merge($this->_logFiles, array_change_key_case($logFiles)); |
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} |
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// Set the logging directory |
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if (!empty($logDir)) { |
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if (is_dir($logDir)) { |
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$this->_filePath = $logDir; // fully qualified & valid path |
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} else { |
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$this->_filePath = \ERDIKO_ROOT.$logDir; // otherwise assume it's relative to the root |
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} |
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} else { |
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$this->_filePath = \ERDIKO_ROOT.$this->_defaultPath; |
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} |
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} |
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/** |
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* Log |
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* |
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* @param string $level |
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* @param string or an object with a __toString() method$ message |
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* @param array $context |
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* @return bool |
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*/ |
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public function log($level, $message, array $context = array()) |
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{ |
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switch ($level) { |
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case \Psr\Log\LogLevel::EMERGENCY: |
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return $this->emergency($message, $context); |
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case \Psr\Log\LogLevel::ALERT: |
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return $this->alert($message, $context); |
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case \Psr\Log\LogLevel::CRITICAL: |
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return $this->critical($message, $context); |
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case \Psr\Log\LogLevel::ERROR: |
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return $this->error($message, $context); |
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case \Psr\Log\LogLevel::WARNING: |
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return $this->warning($message, $context); |
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case \Psr\Log\LogLevel::NOTICE: |
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return $this->notice($message, $context); |
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case \Psr\Log\LogLevel::INFO: |
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return $this->info($message, $context); |
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case \Psr\Log\LogLevel::DEBUG: |
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return $this->debug($message, $context); |
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default: |
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// PSR-3 states that we must throw a \Psr\Log\InvalidArgumentException |
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// if we don't recognize the level |
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throw new \InvalidArgumentException( |
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"Unknown severity level passed to Logger" |
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); |
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} |
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} |
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/** |
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* Add Record |
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* |
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* @param string $level |
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* @param string or an object with a __toString() method$ message |
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* @param array $context |
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* @return bool |
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*/ |
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public function addRecord($level, $message, array $context = array()) |
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{ |
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$message = (string) $message; |
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$logString=date('Y-m-d H:i:s')." ".$level.": ".$this->interpolate($message, $context).PHP_EOL; |
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$logFileName=$this->_logFiles["default"]; // If log key is null use the default log file |
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return $this->write($logString, $logFileName, null, "a"); |
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} |
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/** |
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* Implementation of Placeholder Interpolation |
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* The message MAY contain placeholders which implementors MAY replace with values from the context array. |
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* Placeholder names MUST correspond to keys in the context array. |
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* |
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* @param string $message or an object with a __toString() method |
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* @param array $context replacement values for placeholders |
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* @return bool |
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*/ |
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function interpolate($message, array $context = array()) |
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{ |
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// build a replacement array with braces around the context keys |
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$replace = array(); |
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foreach ($context as $key => $val) { |
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if ($key == "exception" && $val instanceof \Exception) { |
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$replace['{' . $key . '}'] = $val->getMessage(); |
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} else { |
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$replace['{' . $key . '}'] = $val; |
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} |
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} |
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// interpolate replacement values into the message and return |
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return strtr($message, $replace); |
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} |
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/** |
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* Add log file |
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* Valid if multiple log files exist |
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* |
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* @param mixed $key |
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* @param string $logFileName |
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* @return bool |
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*/ |
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public function addLogFile($key, $logFileName) |
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{ |
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$arrayKey=strtolower($key); |
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return $this->_logFiles[$arrayKey] = $logFileName; |
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} |
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/** |
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* Remove log file |
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* Valid if multiple log files exist |
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* |
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* @param mixed $key |
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*/ |
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public function removeLogFile($key) |
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{ |
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$arrayKey=strtolower($key); |
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unset($this->_logFiles[$arrayKey]); |
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return true; |
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} |
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/** |
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* Clear Log |
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* |
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* @param string $logKey |
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* @return bool |
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*/ |
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public function clearLog($logKey = null) |
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{ |
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$ret=true; |
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if ($logKey==null) { |
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foreach ($this->_logFiles as $key => $logFile) { |
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$ret = $ret && $this->write("", $logFile); |
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} |
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return $ret; |
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} else { |
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$arrayKey=strtolower($logKey); |
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if (isset($this->_logFiles[$arrayKey])) { |
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return $this->write("", $this->_logFiles[$arrayKey]); |
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} else { |
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return 0; |
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} |
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} |
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} |
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/** Destructor */ |
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public function __destruct() |
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{ |
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} |
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/** |
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* System is unusable. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function emergency($message, array $context = array()) |
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{ |
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// TODO: Implement emergency() method. |
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return $this->addRecord(\Psr\Log\LogLevel::EMERGENCY, $message, $context); |
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} |
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/** |
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* Action must be taken immediately. |
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* |
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* Example: Entire website down, database unavailable, etc. This should |
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* trigger the SMS alerts and wake you up. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function alert($message, array $context = array()) |
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{ |
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// TODO: Implement alert() method. |
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return $this->addRecord(\Psr\Log\LogLevel::ALERT, $message, $context); |
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} |
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/** |
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* Critical conditions. |
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* |
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* Example: Application component unavailable, unexpected exception. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function critical($message, array $context = array()) |
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{ |
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// TODO: Implement critical() method. |
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return $this->addRecord(\Psr\Log\LogLevel::CRITICAL, $message, $context); |
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} |
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/** |
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* Runtime errors that do not require immediate action but should typically |
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* be logged and monitored. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function error($message, array $context = array()) |
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{ |
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// TODO: Implement error() method. |
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return $this->addRecord(\Psr\Log\LogLevel::ERROR, $message, $context); |
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} |
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/** |
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* Exceptional occurrences that are not errors. |
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* |
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* Example: Use of deprecated APIs, poor use of an API, undesirable things |
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* that are not necessarily wrong. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function warning($message, array $context = array()) |
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{ |
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// TODO: Implement warning() method. |
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return $this->addRecord(\Psr\Log\LogLevel::WARNING, $message, $context); |
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} |
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/** |
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* Normal but significant events. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function notice($message, array $context = array()) |
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{ |
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// TODO: Implement notice() method. |
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return $this->addRecord(\Psr\Log\LogLevel::NOTICE, $message, $context); |
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} |
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/** |
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* Interesting events. |
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* |
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* Example: User logs in, SQL logs. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function info($message, array $context = array()) |
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{ |
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// TODO: Implement info() method. |
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return $this->addRecord(\Psr\Log\LogLevel::INFO, $message, $context); |
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} |
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/** |
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* Detailed debug information. |
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* |
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* @param string $message |
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* @param array $context |
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* |
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* @return null |
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*/ |
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public function debug($message, array $context = array()) |
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{ |
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// TODO: Implement debug() method. |
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return $this->addRecord(\Psr\Log\LogLevel::DEBUG, $message, $context); |
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} |
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} |
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Adding explicit visibility (
private
,protected
, orpublic
) is generally recommend to communicate to other developers how, and from where this method is intended to be used.