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Source Code for Apache Log4j 1.2.17
Apache Log4j provides the interface that applications should code to and provides the adapter components required for implementers to create a logging implementation.
Bytecode (Java 1.4) for Apache Log4j is provided in a JAR file like log4j-1.2.17.jar.
Source Code files for Apache Log4j are provided in both binary packge like log4j-1.2.17.zip and source package like log4j-1.2.17-sources.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j 1.2.17 below.
✍: FYIcenter.com
⏎ org/apache/log4j/jmx/HierarchyDynamicMBean.java
/* * 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 org.apache.log4j.jmx; import org.apache.log4j.Appender; import org.apache.log4j.Category; import org.apache.log4j.Level; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import org.apache.log4j.helpers.OptionConverter; import org.apache.log4j.spi.HierarchyEventListener; import org.apache.log4j.spi.LoggerRepository; import javax.management.Attribute; import javax.management.AttributeNotFoundException; import javax.management.InvalidAttributeValueException; import javax.management.JMException; import javax.management.ListenerNotFoundException; import javax.management.MBeanAttributeInfo; import javax.management.MBeanConstructorInfo; import javax.management.MBeanException; import javax.management.MBeanInfo; import javax.management.MBeanNotificationInfo; import javax.management.MBeanOperationInfo; import javax.management.MBeanParameterInfo; import javax.management.Notification; import javax.management.NotificationBroadcaster; import javax.management.NotificationBroadcasterSupport; import javax.management.NotificationFilter; import javax.management.NotificationFilterSupport; import javax.management.NotificationListener; import javax.management.ObjectName; import javax.management.ReflectionException; import javax.management.RuntimeOperationsException; import java.lang.reflect.Constructor; import java.util.Vector; public class HierarchyDynamicMBean extends AbstractDynamicMBean implements HierarchyEventListener, NotificationBroadcaster { static final String ADD_APPENDER = "addAppender."; static final String THRESHOLD = "threshold"; private MBeanConstructorInfo[] dConstructors = new MBeanConstructorInfo[1]; private MBeanOperationInfo[] dOperations = new MBeanOperationInfo[1]; private Vector vAttributes = new Vector(); private String dClassName = this.getClass().getName(); private String dDescription = "This MBean acts as a management facade for org.apache.log4j.Hierarchy."; private NotificationBroadcasterSupport nbs = new NotificationBroadcasterSupport(); private LoggerRepository hierarchy; private static Logger log = Logger.getLogger(HierarchyDynamicMBean.class); public HierarchyDynamicMBean() { hierarchy = LogManager.getLoggerRepository(); buildDynamicMBeanInfo(); } private void buildDynamicMBeanInfo() { Constructor[] constructors = this.getClass().getConstructors(); dConstructors[0] = new MBeanConstructorInfo( "HierarchyDynamicMBean(): Constructs a HierarchyDynamicMBean instance", constructors[0]); vAttributes.add(new MBeanAttributeInfo(THRESHOLD, "java.lang.String", "The \"threshold\" state of the hiearchy.", true, true, false)); MBeanParameterInfo[] params = new MBeanParameterInfo[1]; params[0] = new MBeanParameterInfo("name", "java.lang.String", "Create a logger MBean" ); dOperations[0] = new MBeanOperationInfo("addLoggerMBean", "addLoggerMBean(): add a loggerMBean", params , "javax.management.ObjectName", MBeanOperationInfo.ACTION); } public ObjectName addLoggerMBean(String name) { Logger cat = LogManager.exists(name); if(cat != null) { return addLoggerMBean(cat); } else { return null; } } ObjectName addLoggerMBean(Logger logger) { String name = logger.getName(); ObjectName objectName = null; try { LoggerDynamicMBean loggerMBean = new LoggerDynamicMBean(logger); objectName = new ObjectName("log4j", "logger", name); if (!server.isRegistered(objectName)) { registerMBean(loggerMBean, objectName); NotificationFilterSupport nfs = new NotificationFilterSupport(); nfs.enableType(ADD_APPENDER + logger.getName()); log.debug("---Adding logger [" + name + "] as listener."); nbs.addNotificationListener(loggerMBean, nfs, null); vAttributes.add(new MBeanAttributeInfo("logger=" + name, "javax.management.ObjectName", "The " + name + " logger.", true, true, // this makes the object // clickable false)); } } catch(JMException e) { log.error("Could not add loggerMBean for ["+name+"].", e); } catch(RuntimeException e) { log.error("Could not add loggerMBean for ["+name+"].", e); } return objectName; } public void addNotificationListener(NotificationListener listener, NotificationFilter filter, java.lang.Object handback) { nbs.addNotificationListener(listener, filter, handback); } protected Logger getLogger() { return log; } public MBeanInfo getMBeanInfo() { //cat.debug("getMBeanInfo called."); MBeanAttributeInfo[] attribs = new MBeanAttributeInfo[vAttributes.size()]; vAttributes.toArray(attribs); return new MBeanInfo(dClassName, dDescription, attribs, dConstructors, dOperations, new MBeanNotificationInfo[0]); } public MBeanNotificationInfo[] getNotificationInfo(){ return nbs.getNotificationInfo(); } public Object invoke(String operationName, Object params[], String signature[]) throws MBeanException, ReflectionException { if (operationName == null) { throw new RuntimeOperationsException( new IllegalArgumentException("Operation name cannot be null"), "Cannot invoke a null operation in " + dClassName); } // Check for a recognized operation name and call the corresponding operation if(operationName.equals("addLoggerMBean")) { return addLoggerMBean((String)params[0]); } else { throw new ReflectionException( new NoSuchMethodException(operationName), "Cannot find the operation " + operationName + " in " + dClassName); } } public Object getAttribute(String attributeName) throws AttributeNotFoundException, MBeanException, ReflectionException { // Check attributeName is not null to avoid NullPointerException later on if (attributeName == null) { throw new RuntimeOperationsException(new IllegalArgumentException( "Attribute name cannot be null"), "Cannot invoke a getter of " + dClassName + " with null attribute name"); } log.debug("Called getAttribute with ["+attributeName+"]."); // Check for a recognized attributeName and call the corresponding getter if (attributeName.equals(THRESHOLD)) { return hierarchy.getThreshold(); } else if(attributeName.startsWith("logger")) { int k = attributeName.indexOf("%3D"); String val = attributeName; if(k > 0) { val = attributeName.substring(0, k)+'='+ attributeName.substring(k+3); } try { return new ObjectName("log4j:"+val); } catch(JMException e) { log.error("Could not create ObjectName" + val); } catch(RuntimeException e) { log.error("Could not create ObjectName" + val); } } // If attributeName has not been recognized throw an AttributeNotFoundException throw(new AttributeNotFoundException("Cannot find " + attributeName + " attribute in " + dClassName)); } public void addAppenderEvent(Category logger, Appender appender) { log.debug("addAppenderEvent called: logger="+logger.getName()+ ", appender="+appender.getName()); Notification n = new Notification(ADD_APPENDER+logger.getName(), this, 0); n.setUserData(appender); log.debug("sending notification."); nbs.sendNotification(n); } public void removeAppenderEvent(Category cat, Appender appender) { log.debug("removeAppenderCalled: logger="+cat.getName()+ ", appender="+appender.getName()); } public void postRegister(java.lang.Boolean registrationDone) { log.debug("postRegister is called."); hierarchy.addHierarchyEventListener(this); Logger root = hierarchy.getRootLogger(); addLoggerMBean(root); } public void removeNotificationListener(NotificationListener listener) throws ListenerNotFoundException { nbs.removeNotificationListener(listener); } public void setAttribute(Attribute attribute) throws AttributeNotFoundException, InvalidAttributeValueException, MBeanException, ReflectionException { // Check attribute is not null to avoid NullPointerException later on if (attribute == null) { throw new RuntimeOperationsException( new IllegalArgumentException("Attribute cannot be null"), "Cannot invoke a setter of "+dClassName+" with null attribute"); } String name = attribute.getName(); Object value = attribute.getValue(); if (name == null) { throw new RuntimeOperationsException( new IllegalArgumentException("Attribute name cannot be null"), "Cannot invoke the setter of "+dClassName+ " with null attribute name"); } if(name.equals(THRESHOLD)) { Level l = OptionConverter.toLevel((String) value, hierarchy.getThreshold()); hierarchy.setThreshold(l); } } }
⏎ org/apache/log4j/jmx/HierarchyDynamicMBean.java
Or download all of them as a single archive file:
File name: log4j-1.2.17-sources.jar File size: 481200 bytes Release date: 2012-05-06 Download
⇒ Download and Install apache-log4j-1.2.15.zip
⇐ Download and Install log4j-1.2.17.zip
2015-12-14, 63345👍, 0💬
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