/cake/libs/cake_log.php
PHP | 296 lines | 142 code | 13 blank | 141 comment | 25 complexity | 8dadb24de2f96a16738b73a459af468c MD5 | raw file
- <?php
- /**
- * Logging.
- *
- * Log messages to text files.
- *
- * PHP versions 4 and 5
- *
- * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
- * Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
- * @link http://cakephp.org CakePHP(tm) Project
- * @package cake
- * @subpackage cake.cake.libs
- * @since CakePHP(tm) v 0.2.9
- * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
- */
- /**
- * Set up error level constants to be used within the framework if they are not defined within the
- * system.
- *
- */
- if (!defined('LOG_WARNING')) {
- define('LOG_WARNING', 3);
- }
- if (!defined('LOG_NOTICE')) {
- define('LOG_NOTICE', 4);
- }
- if (!defined('LOG_DEBUG')) {
- define('LOG_DEBUG', 5);
- }
- if (!defined('LOG_INFO')) {
- define('LOG_INFO', 6);
- }
- /**
- * Logs messages to configured Log adapters. One or more adapters can be configured
- * using CakeLogs's methods. If you don't configure any adapters, and write to the logs
- * a default FileLog will be autoconfigured for you.
- *
- * @package cake
- * @subpackage cake.cake.libs
- */
- class CakeLog {
- /**
- * An array of connected streams.
- * Each stream represents a callable that will be called when write() is called.
- *
- * @var array
- * @access protected
- */
- var $_streams = array();
- /**
- * Get an instance
- *
- * @return void
- * @static
- */
- function &getInstance() {
- static $instance = array();
- if (!isset($instance[0])) {
- $instance[0] =& new CakeLog();
- }
- return $instance[0];
- }
- /**
- * Configure and add a new logging stream to CakeLog
- * You can use add loggers from app/libs use app.loggername, or any plugin/libs using plugin.loggername.
- *
- * ### Usage:
- *
- * {{{
- * CakeLog::config('second_file', array(
- * 'engine' => 'FileLog',
- * 'path' => '/var/logs/my_app/'
- * ));
- * }}}
- *
- * Will configure a FileLog instance to use the specified path. All options that are not `engine`
- * are passed onto the logging adapter, and handled there. Any class can be configured as a logging
- * adapter as long as it implements a `write` method with the following signature.
- *
- * `write($type, $message)`
- *
- * For an explaination of these parameters, see CakeLog::write()
- *
- * @param string $key The keyname for this logger, used to remove the logger later.
- * @param array $config Array of configuration information for the logger
- * @return boolean success of configuration.
- * @static
- */
- function config($key, $config) {
- if (empty($config['engine'])) {
- trigger_error(__('Missing logger classname', true), E_USER_WARNING);
- return false;
- }
- $self =& CakeLog::getInstance();
- $className = $self->_getLogger($config['engine']);
- if (!$className) {
- return false;
- }
- unset($config['engine']);
- $self->_streams[$key] = new $className($config);
- return true;
- }
- /**
- * Attempts to import a logger class from the various paths it could be on.
- * Checks that the logger class implements a write method as well.
- *
- * @param string $loggerName the plugin.className of the logger class you want to build.
- * @return mixed boolean false on any failures, string of classname to use if search was successful.
- * @access protected
- */
- function _getLogger($loggerName) {
- list($plugin, $loggerName) = pluginSplit($loggerName);
- if ($plugin) {
- App::import('Lib', $plugin . '.log/' . $loggerName);
- } else {
- if (!App::import('Lib', 'log/' . $loggerName)) {
- App::import('Core', 'log/' . $loggerName);
- }
- }
- if (!class_exists($loggerName)) {
- trigger_error(sprintf(__('Could not load logger class %s', true), $loggerName), E_USER_WARNING);
- return false;
- }
- if (!is_callable(array($loggerName, 'write'))) {
- trigger_error(
- sprintf(__('logger class %s does not implement a write method.', true), $loggerName),
- E_USER_WARNING
- );
- return false;
- }
- return $loggerName;
- }
- /**
- * Returns the keynames of the currently active streams
- *
- * @return array Array of configured log streams.
- * @access public
- * @static
- */
- function configured() {
- $self =& CakeLog::getInstance();
- return array_keys($self->_streams);
- }
- /**
- * Removes a stream from the active streams. Once a stream has been removed
- * it will no longer have messages sent to it.
- *
- * @param string $keyname Key name of a configured stream to remove.
- * @return void
- * @access public
- * @static
- */
- function drop($streamName) {
- $self =& CakeLog::getInstance();
- unset($self->_streams[$streamName]);
- }
- /**
- * Configures the automatic/default stream a FileLog.
- *
- * @return void
- * @access protected
- */
- function _autoConfig() {
- if (!class_exists('FileLog')) {
- App::import('Core', 'log/FileLog');
- }
- $this->_streams['default'] =& new FileLog(array('path' => LOGS));
- }
- /**
- * Writes the given message and type to all of the configured log adapters.
- * Configured adapters are passed both the $type and $message variables. $type
- * is one of the following strings/values.
- *
- * ### Types:
- *
- * - `LOG_WARNING` => 'warning',
- * - `LOG_NOTICE` => 'notice',
- * - `LOG_INFO` => 'info',
- * - `LOG_DEBUG` => 'debug',
- * - `LOG_ERR` => 'error',
- * - `LOG_ERROR` => 'error'
- *
- * ### Usage:
- *
- * Write a message to the 'warning' log:
- *
- * `CakeLog::write('warning', 'Stuff is broken here');`
- *
- * @param string $type Type of message being written
- * @param string $message Message content to log
- * @return boolean Success
- * @access public
- * @static
- */
- function write($type, $message) {
- if (!defined('LOG_ERROR')) {
- define('LOG_ERROR', 2);
- }
- if (!defined('LOG_ERR')) {
- define('LOG_ERR', LOG_ERROR);
- }
- $levels = array(
- LOG_WARNING => 'warning',
- LOG_NOTICE => 'notice',
- LOG_INFO => 'info',
- LOG_DEBUG => 'debug',
- LOG_ERR => 'error',
- LOG_ERROR => 'error'
- );
- if (is_int($type) && isset($levels[$type])) {
- $type = $levels[$type];
- }
- $self =& CakeLog::getInstance();
- if (empty($self->_streams)) {
- $self->_autoConfig();
- }
- $keys = array_keys($self->_streams);
- foreach ($keys as $key) {
- $logger =& $self->_streams[$key];
- $logger->write($type, $message);
- }
- return true;
- }
- /**
- * An error_handler that will log errors to file using CakeLog::write();
- * You can control how verbose and what type of errors this error_handler will
- * catch using `Configure::write('log', $value)`. See core.php for more information.
- *
- *
- * @param integer $code Code of error
- * @param string $description Error description
- * @param string $file File on which error occurred
- * @param integer $line Line that triggered the error
- * @param array $context Context
- * @return void
- */
- function handleError($code, $description, $file = null, $line = null, $context = null) {
- if ($code === 2048 || $code === 8192 || error_reporting() === 0) {
- return;
- }
- switch ($code) {
- case E_PARSE:
- case E_ERROR:
- case E_CORE_ERROR:
- case E_COMPILE_ERROR:
- case E_USER_ERROR:
- $error = 'Fatal Error';
- $level = LOG_ERROR;
- break;
- case E_WARNING:
- case E_USER_WARNING:
- case E_COMPILE_WARNING:
- case E_RECOVERABLE_ERROR:
- $error = 'Warning';
- $level = LOG_WARNING;
- break;
- case E_NOTICE:
- case E_USER_NOTICE:
- $error = 'Notice';
- $level = LOG_NOTICE;
- break;
- default:
- return;
- break;
- }
- $message = $error . ' (' . $code . '): ' . $description . ' in [' . $file . ', line ' . $line . ']';
- CakeLog::write($level, $message);
- }
- }
- if (!defined('DISABLE_DEFAULT_ERROR_HANDLING')) {
- $cakeLog =& CakeLog::getInstance();
- if (PHP5) {
- set_error_handler(array($cakeLog, 'handleError'), error_reporting());
- } else {
- set_error_handler(array($cakeLog, 'handleError'));
- }
- }