001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.classic.sift; 015 016import ch.qos.logback.classic.LoggerContext; 017import ch.qos.logback.classic.selector.ContextSelector; 018import ch.qos.logback.classic.spi.ILoggingEvent; 019import ch.qos.logback.classic.util.ContextSelectorStaticBinder; 020import ch.qos.logback.core.sift.AbstractDiscriminator; 021 022/** 023 * This discriminator returns the value context as determined by JNDI. If the 024 * said value is null, then a default value is returned. 025 * 026 * <p> 027 * Both Key and the DefaultValue are user specified properties. 028 * 029 * @author Ceki Gülcü 030 * 031 */ 032public class JNDIBasedContextDiscriminator extends AbstractDiscriminator<ILoggingEvent> { 033 034 private static final String KEY = "contextName"; 035 private String defaultValue; 036 037 /** 038 * Return the name of the current context name as found in the logging event. 039 */ 040 public String getDiscriminatingValue(ILoggingEvent event) { 041 ContextSelector selector = ContextSelectorStaticBinder.getSingleton().getContextSelector(); 042 043 if (selector == null) { 044 return defaultValue; 045 } 046 047 LoggerContext lc = selector.getLoggerContext(); 048 if (lc == null) { 049 return defaultValue; 050 } 051 052 return lc.getName(); 053 } 054 055 public String getKey() { 056 return KEY; 057 } 058 059 public void setKey(String key) { 060 throw new UnsupportedOperationException("Key cannot be set. Using fixed key " + KEY); 061 } 062 063 /** 064 * @see #setDefaultValue(String) 065 * @return 066 */ 067 public String getDefaultValue() { 068 return defaultValue; 069 } 070 071 /** 072 * The default context name in case the context name is not set for the current 073 * logging event. 074 * 075 * @param defaultValue 076 */ 077 public void setDefaultValue(String defaultValue) { 078 this.defaultValue = defaultValue; 079 } 080}