<?php/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @package log4php *//** * The LoggerMDC class provides _mapped diagnostic contexts_. * * A Mapped Diagnostic Context, or MDC in short, is an instrument for * distinguishing interleaved log output from different sources. Log output * is typically interleaved when a server handles multiple clients * near-simultaneously. * * This class is similar to the {@link LoggerNDC} class except that * it is based on a map instead of a stack. * * @version $Revision: 1343630 $ * @since 0.3 * @package log4php */class LoggerMDC { /** Holds the context map. */ private static $map = array(); /** * Stores a context value as identified with the key parameter into the * context map. * * @param string $key the key * @param string $value the value */ public static function put($key, $value) { self::$map[$key] = $value; } /** * Returns the context value identified by the key parameter. * * @param string $key The key. * @return string The context or an empty string if no context found * for given key. */ public static function get($key) { return isset(self::$map[$key]) ? self::$map[$key] : ''; } /** * Returns the contex map as an array. * @return array The MDC context map. */ public static function getMap() { return self::$map; } /** * Removes the the context identified by the key parameter. * * Only affects user mappings, not $_ENV or $_SERVER. * * @param string $key The key to be removed. */ public static function remove($key) { unset(self::$map[$key]); } /** * Clears the mapped diagnostic context. */ public static function clear() { self::$map = array(); }}