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129 lines
3.8 KiB
129 lines
3.8 KiB
<?php
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/**
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* log4php is a PHP port of the log4j java logging package.
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*
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* <p>This framework is based on log4j (see {@link http://jakarta.apache.org/log4j log4j} for details).</p>
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* <p>Design, strategies and part of the methods documentation are developed by log4j team
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* (Ceki Gülcü as log4j project founder and
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* {@link http://jakarta.apache.org/log4j/docs/contributors.html contributors}).</p>
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*
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* <p>PHP port, extensions and modifications by VxR. All rights reserved.<br>
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* For more information, please see {@link http://www.vxr.it/log4php/}.</p>
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*
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* <p>This software is published under the terms of the LGPL License
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* a copy of which has been included with this distribution in the LICENSE file.</p>
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*
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* @package log4php
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*/
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/**
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* @ignore
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*/
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if (!defined('LOG4PHP_DIR')) define('LOG4PHP_DIR', dirname(__FILE__));
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/**
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*/
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require_once(LOG4PHP_DIR . '/LoggerLog.php');
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define('LOGGER_MDC_HT_SIZE', 7);
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/**
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* This is the global repository of user mappings
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*/
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$GLOBALS['log4php.LoggerMDC.ht'] = array();
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/**
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* The LoggerMDC class is similar to the {@link LoggerNDC} class except that it is
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* based on a map instead of a stack. It provides <i>mapped diagnostic contexts</i>.
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*
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* A <i>Mapped Diagnostic Context</i>, or
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* MDC in short, is an instrument for distinguishing interleaved log
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* output from different sources. Log output is typically interleaved
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* when a server handles multiple clients near-simultaneously.
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*
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* <p><b><i>The MDC is managed on a per thread basis</i></b>.
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*
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* @author VxR <vxr@vxr.it>
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* @version $Revision: 1.1 $
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* @since 0.3
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* @package log4php
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*/
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class LoggerMDC {
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/**
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* Put a context value as identified with the key parameter into the current thread's
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* context map.
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*
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* <p>If the current thread does not have a context map it is
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* created as a side effect.</p>
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*
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* <p>Note that you cannot put more than {@link LOGGER_MDC_HT_SIZE} keys.</p>
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*
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* @param string $key the key
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* @param string $value the value
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* @static
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*/
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function put($key, $value)
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{
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if ( sizeof($GLOBALS['log4php.LoggerMDC.ht']) < LOGGER_MDC_HT_SIZE )
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$GLOBALS['log4php.LoggerMDC.ht'][$key] = $value;
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}
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/**
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* Get the context identified by the key parameter.
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*
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* <p>You can use special key identifiers to map values in
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* PHP $_SERVER and $_ENV vars. Just put a 'server.' or 'env.'
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* followed by the var name you want to refer.</p>
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*
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* <p>This method has no side effects.</p>
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*
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* @param string $key
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* @return string
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* @static
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*/
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function get($key)
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{
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LoggerLog::debug("LoggerMDC::get() key='$key'");
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if (!empty($key)) {
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if (strpos($key, 'server.') === 0) {
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$varName = substr($key, 7);
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LoggerLog::debug("LoggerMDC::get() a _SERVER[$varName] is requested.");
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return $_SERVER[$varName];
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} elseif (strpos($key, 'env.') === 0) {
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$varName = substr($key, 4);
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LoggerLog::debug("LoggerMDC::get() a _ENV[$varName] is requested.");
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return $_ENV[$varName];
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} elseif (isset($GLOBALS['log4php.LoggerMDC.ht'][$key])) {
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LoggerLog::debug("LoggerMDC::get() a user key is requested.");
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return $GLOBALS['log4php.LoggerMDC.ht'][$key];
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}
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}
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return '';
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}
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/**
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* Remove the the context identified by the key parameter.
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*
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* It only affects user mappings.
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*
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* @param string $key
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* @return string
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* @static
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*/
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function remove($key)
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{
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unset($GLOBALS['log4php.LoggerMDC.ht'][$key]);
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}
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}
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?>
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