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<?php
/**
* log4php is a PHP port of the log4j java logging package.
*
* <p>This framework is based on log4j (see {@link http://jakarta.apache.org/log4j log4j} for details).</p>
* <p>Design, strategies and part of the methods documentation are developed by log4j team
* (Ceki Gülcü as log4j project founder and
* {@link http://jakarta.apache.org/log4j/docs/contributors.html contributors}).</p>
*
* <p>PHP port, extensions and modifications by VxR. All rights reserved.<br>
* For more information, please see {@link http://www.vxr.it/log4php/}.</p>
*
* <p>This software is published under the terms of the LGPL License
* a copy of which has been included with this distribution in the LICENSE file.</p>
*
* @package log4php
*/
/**
* @ignore
*/
if (!defined('LOG4PHP_DIR')) define('LOG4PHP_DIR', dirname(__FILE__));
/**
*/
require_once(LOG4PHP_DIR . '/LoggerLog.php');
require_once(LOG4PHP_DIR . '/LoggerLevel.php');
require_once(LOG4PHP_DIR . '/LoggerRoot.php');
require_once(LOG4PHP_DIR . '/or/LoggerRendererMap.php');
require_once(LOG4PHP_DIR . '/LoggerDefaultCategoryFactory.php');
/**
* This class is specialized in retrieving loggers by name and also maintaining
* the logger hierarchy.
*
* <p>The casual user does not have to deal with this class directly.</p>
*
* <p>The structure of the logger hierarchy is maintained by the
* getLogger method. The hierarchy is such that children link
* to their parent but parents do not have any pointers to their
* children. Moreover, loggers can be instantiated in any order, in
* particular descendant before ancestor.</p>
*
* <p>In case a descendant is created before a particular ancestor,
* then it creates a provision node for the ancestor and adds itself
* to the provision node. Other descendants of the same ancestor add
* themselves to the previously created provision node.</p>
*
* @author VxR <vxr@vxr.it>
* @version $Revision: 1.1 $
* @package log4php
*/
class LoggerHierarchy {
/**
* @var object currently unused
*/
var $defaultFactory;
/**
* @var boolean activate internal logging
* @see LoggerLog
*/
var $debug = false;
/**
* @var array hierarchy tree. saves here all loggers
*/
var $ht = array();
/**
* @var LoggerRoot
*/
var $root = null;
/**
* @var LoggerRendererMap
*/
var $rendererMap;
/**
* @var LoggerLevel main level threshold
*/
var $threshold;
/**
* @var boolean currently unused
*/
var $emittedNoAppenderWarning = false;
/**
* @var boolean currently unused
*/
var $emittedNoResourceBundleWarning = false;
/* --------------------------------------------------------------------------*/
/* --------------------------------------------------------------------------*/
/* --------------------------------------------------------------------------*/
function &singleton()
{
static $instance;
if (!isset($instance))
$instance = new LoggerHierarchy(new LoggerRoot());
return $instance;
}
/**
* Create a new logger hierarchy.
* @param object $root the root logger
*/
function LoggerHierarchy($root)
{
$this->root =& $root;
// Enable all level levels by default.
$this->setThreshold(LoggerLevel::getLevelAll());
$this->root->setHierarchy($this);
$this->rendererMap = new LoggerRendererMap();
$this->defaultFactory = new LoggerDefaultCategoryFactory();
}
/**
* Add a HierarchyEventListener event to the repository.
* Not Yet Impl.
*/
function addHierarchyEventListener($listener)
{
return;
}
/**
* Add an object renderer for a specific class.
* Not Yet Impl.
*/
function addRenderer($classToRender, $or)
{
$this->rendererMap->put($classToRender, $or);
}
/**
* This call will clear all logger definitions from the internal hashtable.
*/
function clear()
{
$this->ht = array();
}
function emitNoAppenderWarning($cat)
{
return;
}
/**
* Check if the named logger exists in the hierarchy.
* @param string $name
* @return boolean
*/
function exists($name)
{
return in_array($name, array_keys($this->ht));
}
function fireAddAppenderEvent($logger, $appender)
{
return;
}
/**
* @deprecated Please use {@link getCurrentLoggers()} instead.
*/
function &getCurrentCategories()
{
return $this->getCurrentLoggers();
}
/**
* Returns all the currently defined categories in this hierarchy as an array.
* @return array
*/
function &getCurrentLoggers()
{
$loggers = array();
$loggerNames = array_keys($this->ht);
$enumLoggers = sizeof($loggerNames);
for ($i = 0; $i < $enumLoggers; $i++) {
$loggerName = $loggerNames[$i];
$loggers[] =& $this->ht[$loggerName];
}
return $loggers;
}
/**
* Return a new logger instance named as the first parameter using the default factory.
*
* @param string $name logger name
* @param LoggerFactory $factory a {@link LoggerFactory} instance or null
* @return Logger
*/
function &getLogger($name, $factory = null)
{
if ($factory === null) {
return $this->getLoggerByFactory($name, $this->defaultFactory);
} else {
return $this->getLoggerByFactory($name, $factory);
}
}
/**
* Return a new logger instance named as the first parameter using the default factory.
*
* @param string $name logger name
* @return Logger
* @todo merge with {@link getLogger()}
*/
function &getLoggerByFactory($name, $factory)
{
if (!isset($this->ht[$name])) {
LoggerLog::debug("LoggerHierarchy::getLoggerByFactory():name=[$name]:factory=[".get_class($factory)."] creating a new logger...");
$this->ht[$name] = $factory->makeNewLoggerInstance($name);
$this->ht[$name]->setHierarchy($this);
$nodes = explode('.', $name);
$firstNode = array_shift($nodes);
if ( $firstNode != $name and isset($this->ht[$firstNode])) {
LoggerLog::debug("LoggerHierarchy::getLogger($name) parent is now [$firstNode]");
$this->ht[$name]->parent =& $this->ht[$firstNode];
} else {
LoggerLog::debug("LoggerHierarchy::getLogger($name) parent is now [root]");
$this->ht[$name]->parent =& $this->root;
}
if (sizeof($nodes) > 0) {
// find parent node
foreach ($nodes as $node) {
$parentNode = "$firstNode.$node";
if (isset($this->ht[$parentNode]) and $parentNode != $name) {
LoggerLog::debug("LoggerHierarchy::getLogger($name) parent is now [$parentNode]");
$this->ht[$name]->parent =& $this->ht[$parentNode];
}
$firstNode .= ".$node";
}
}
// update children
/*
$children = array();
foreach (array_keys($this->ht) as $nodeName) {
if ($nodeName != $name and substr($nodeName, 0, strlen($name)) == $name) {
$children[] = $nodeName;
}
}
*/
}
return $this->ht[$name];
}
/**
* @return LoggerRendererMap Get the renderer map for this hierarchy.
*/
function &getRendererMap()
{
return $this->rendererMap;
}
/**
* @return LoggerRoot Get the root of this hierarchy.
*/
function &getRootLogger()
{
if (!isset($this->root) or $this->root == null)
$this->root = new LoggerRoot();
return $this->root;
}
/**
* @return LoggerLevel Returns the threshold Level.
*/
function getThreshold()
{
return $this->threshold;
}
/**
* This method will return true if this repository is disabled
* for level object passed as parameter and false otherwise.
* @return boolean
*/
function isDisabled($level)
{
return ($this->threshold->level > $level->level);
}
/**
* @deprecated Deprecated with no replacement.
*/
function overrideAsNeeded($override)
{
return;
}
/**
* Reset all values contained in this hierarchy instance to their
* default.
*
* This removes all appenders from all categories, sets
* the level of all non-root categories to <i>null</i>,
* sets their additivity flag to <i>true</i> and sets the level
* of the root logger to {@link LOGGER_LEVEL_DEBUG}. Moreover,
* message disabling is set its default "off" value.
*
* <p>Existing categories are not removed. They are just reset.
*
* <p>This method should be used sparingly and with care as it will
* block all logging until it is completed.</p>
*/
function resetConfiguration()
{
$root =& $this->getRootLogger();
$root->setLevel(LoggerLevel::getLevelDebug());
$this->setThreshold(LoggerLevel::getLevelAll());
$this->shutDown();
$loggers =& $this->getCurrentLoggers();
$enumLoggers = sizeof($loggers);
for ($i = 0; $i < $enumLoggers; $i++) {
$loggers[$i]->setLevel(null);
$loggers[$i]->setAdditivity(true);
$loggers[$i]->setResourceBundle(null);
}
$this->rendererMap->clear();
}
/**
* @deprecated Deprecated with no replacement.
*/
function setDisableOverride($override)
{
return;
}
/**
* Used by subclasses to add a renderer to the hierarchy passed as parameter.
* @param string $renderedClass a LoggerRenderer class name
* @param LoggerRenderer $renderer
*
*/
function setRenderer($renderedClass, $renderer)
{
$this->rendererMap->put($renderedClass, $renderer);
}
/**
* set a new threshold level
*
* @param LoggerLevel $l
*/
function setThreshold($l)
{
if ($l !== null)
$this->threshold = $l;
}
/**
* Shutting down a hierarchy will <i>safely</i> close and remove
* all appenders in all categories including the root logger.
*
* <p>Some appenders such as {@link LoggerSocketAppender}
* need to be closed before the
* application exists. Otherwise, pending logging events might be
* lost.
*
* <p>The shutdown method is careful to close nested
* appenders before closing regular appenders. This is allows
* configurations where a regular appender is attached to a logger
* and again to a nested appender.
*/
function shutdown()
{
$this->root->removeAllAppenders();
$cats =& $this->getCurrentLoggers();
$enumCats = sizeof($cats);
if ($enumCats > 0) {
for ($i = 0; $i < $enumCats; $i++) {
$cats[$i]->removeAllAppenders();
}
}
}
}
?>