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https://github.com/ZeJMaN/LBCAlerte_ynh.git
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258 lines
7.1 KiB
PHP
258 lines
7.1 KiB
PHP
<?php
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/**
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @package log4php
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*/
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/**
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* This class is specialized in retrieving loggers by name and also maintaining
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* the logger hierarchy. The logger hierarchy is dealing with the several Log-Levels
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* Logger can have. From log4j website:
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*
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* "A logger is said to be an ancestor of another logger if its name followed
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* by a dot is a prefix of the descendant logger name. A logger is said to be
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* a parent of a child logger if there are no ancestors between itself and the
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* descendant logger."
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*
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* Child Loggers do inherit their Log-Levels from their Ancestors. They can
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* increase their Log-Level compared to their Ancestors, but they cannot decrease it.
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*
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* <p>The casual user does not have to deal with this class directly.</p>
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*
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* <p>The structure of the logger hierarchy is maintained by the
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* getLogger method. The hierarchy is such that children link
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* to their parent but parents do not have any pointers to their
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* children. Moreover, loggers can be instantiated in any order, in
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* particular descendant before ancestor.</p>
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*
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* <p>In case a descendant is created before a particular ancestor,
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* then it creates a provision node for the ancestor and adds itself
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* to the provision node. Other descendants of the same ancestor add
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* themselves to the previously created provision node.</p>
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*
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* @version $Revision: 1394956 $
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* @package log4php
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*/
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class LoggerHierarchy {
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/** Array holding all Logger instances. */
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protected $loggers = array();
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/**
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* The root logger.
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* @var RootLogger
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*/
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protected $root;
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/**
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* The logger renderer map.
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* @var LoggerRendererMap
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*/
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protected $rendererMap;
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/**
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* Main level threshold. Events with lower level will not be logged by any
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* logger, regardless of it's configuration.
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* @var LoggerLevel
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*/
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protected $threshold;
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/**
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* Creates a new logger hierarchy.
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* @param LoggerRoot $root The root logger.
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*/
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public function __construct(LoggerRoot $root) {
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$this->root = $root;
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$this->setThreshold(LoggerLevel::getLevelAll());
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$this->rendererMap = new LoggerRendererMap();
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}
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/**
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* Clears all loggers.
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*/
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public function clear() {
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$this->loggers = array();
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}
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/**
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* Check if the named logger exists in the hierarchy.
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* @param string $name
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* @return boolean
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*/
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public function exists($name) {
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return isset($this->loggers[$name]);
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}
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/**
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* Returns all the currently defined loggers in this hierarchy as an array.
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* @return array
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*/
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public function getCurrentLoggers() {
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return array_values($this->loggers);
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}
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/**
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* Returns a named logger instance logger. If it doesn't exist, one is created.
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*
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* @param string $name Logger name
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* @return Logger Logger instance.
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*/
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public function getLogger($name) {
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if(!isset($this->loggers[$name])) {
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$logger = new Logger($name);
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$nodes = explode('.', $name);
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$firstNode = array_shift($nodes);
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// if name is not a first node but another first node is their
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if($firstNode != $name and isset($this->loggers[$firstNode])) {
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$logger->setParent($this->loggers[$firstNode]);
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} else {
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// if there is no father, set root logger as father
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$logger->setParent($this->root);
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}
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// if there are more nodes than one
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if(count($nodes) > 0) {
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// find parent node
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foreach($nodes as $node) {
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$parentNode = "$firstNode.$node";
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if(isset($this->loggers[$parentNode]) and $parentNode != $name) {
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$logger->setParent($this->loggers[$parentNode]);
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}
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$firstNode .= ".$node";
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}
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}
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$this->loggers[$name] = $logger;
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}
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return $this->loggers[$name];
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}
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/**
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* Returns the logger renderer map.
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* @return LoggerRendererMap
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*/
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public function getRendererMap() {
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return $this->rendererMap;
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}
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/**
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* Returns the root logger.
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* @return LoggerRoot
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*/
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public function getRootLogger() {
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return $this->root;
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}
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/**
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* Returns the main threshold level.
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* @return LoggerLevel
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*/
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public function getThreshold() {
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return $this->threshold;
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}
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/**
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* Returns true if the hierarchy is disabled for given log level and false
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* otherwise.
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* @return boolean
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*/
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public function isDisabled(LoggerLevel $level) {
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return ($this->threshold->toInt() > $level->toInt());
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}
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/**
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* Reset all values contained in this hierarchy instance to their
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* default.
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*
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* This removes all appenders from all loggers, sets
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* the level of all non-root loggers to <i>null</i>,
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* sets their additivity flag to <i>true</i> and sets the level
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* of the root logger to {@link LOGGER_LEVEL_DEBUG}.
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*
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* <p>Existing loggers are not removed. They are just reset.
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*
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* <p>This method should be used sparingly and with care as it will
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* block all logging until it is completed.</p>
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*/
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public function resetConfiguration() {
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$root = $this->getRootLogger();
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$root->setLevel(LoggerLevel::getLevelDebug());
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$this->setThreshold(LoggerLevel::getLevelAll());
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$this->shutDown();
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foreach($this->loggers as $logger) {
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$logger->setLevel(null);
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$logger->setAdditivity(true);
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$logger->removeAllAppenders();
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}
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$this->rendererMap->reset();
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LoggerAppenderPool::clear();
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}
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/**
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* Sets the main threshold level.
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* @param LoggerLevel $l
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*/
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public function setThreshold(LoggerLevel $threshold) {
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$this->threshold = $threshold;
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}
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/**
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* Shutting down a hierarchy will <i>safely</i> close and remove
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* all appenders in all loggers including the root logger.
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*
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* The shutdown method is careful to close nested
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* appenders before closing regular appenders. This is allows
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* configurations where a regular appender is attached to a logger
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* and again to a nested appender.
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*
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* @todo Check if the last paragraph is correct.
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*/
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public function shutdown() {
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$this->root->removeAllAppenders();
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foreach($this->loggers as $logger) {
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$logger->removeAllAppenders();
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}
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}
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/**
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* Prints the current Logger hierarchy tree. Useful for debugging.
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*/
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public function printHierarchy() {
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$this->printHierarchyInner($this->getRootLogger(), 0);
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}
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private function printHierarchyInner(Logger $current, $level) {
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for ($i = 0; $i < $level; $i++) {
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echo ($i == $level - 1) ? "|--" : "| ";
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}
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echo $current->getName() . "\n";
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foreach($this->loggers as $logger) {
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if ($logger->getParent() == $current) {
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$this->printHierarchyInner($logger, $level + 1);
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}
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}
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}
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}
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