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Source Code for Apache Log4j 1.2 Bridge
Apache Log4j 1.2 Bridge
allows applications coded to use Log4j 1.2 API to use Log4j 2 instead.
Bytecode (Java 8) for Apache Log4j 1.2 Bridge is provided in a separate JAR file like log4j-1.2-api-2.14.1.jar.
Source Code files for Apache Log4j 1.2 Bridge are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j 1.2 Bridge 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/log4j/config/PropertiesConfiguration.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.config; import org.apache.log4j.Appender; import org.apache.log4j.Layout; import org.apache.log4j.LogManager; import org.apache.log4j.PatternLayout; import org.apache.log4j.bridge.AppenderAdapter; import org.apache.log4j.bridge.AppenderWrapper; import org.apache.log4j.helpers.OptionConverter; import org.apache.log4j.spi.ErrorHandler; import org.apache.log4j.spi.Filter; import org.apache.logging.log4j.core.LoggerContext; import org.apache.logging.log4j.core.config.Configuration; import org.apache.logging.log4j.core.config.ConfigurationSource; import org.apache.logging.log4j.core.config.LoggerConfig; import org.apache.logging.log4j.core.config.status.StatusConfiguration; import org.apache.logging.log4j.util.LoaderUtil; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.SortedMap; import java.util.StringTokenizer; import java.util.TreeMap; /** * Construct a configuration based on Log4j 1 properties. */ public class PropertiesConfiguration extends Log4j1Configuration { private static final String CATEGORY_PREFIX = "log4j.category."; private static final String LOGGER_PREFIX = "log4j.logger."; private static final String ADDITIVITY_PREFIX = "log4j.additivity."; private static final String ROOT_CATEGORY_PREFIX = "log4j.rootCategory"; private static final String ROOT_LOGGER_PREFIX = "log4j.rootLogger"; private static final String APPENDER_PREFIX = "log4j.appender."; private static final String LOGGER_REF = "logger-ref"; private static final String ROOT_REF = "root-ref"; private static final String APPENDER_REF_TAG = "appender-ref"; public static final long DEFAULT_DELAY = 60000; public static final String DEBUG_KEY="log4j.debug"; private static final String INTERNAL_ROOT_NAME = "root"; private final Map<String, Appender> registry; /** * Constructor. * @param loggerContext The LoggerContext. * @param source The ConfigurationSource. * @param monitorIntervalSeconds The monitoring interval in seconds. */ public PropertiesConfiguration(final LoggerContext loggerContext, final ConfigurationSource source, int monitorIntervalSeconds) { super(loggerContext, source, monitorIntervalSeconds); registry = new HashMap<>(); } @Override public void doConfigure() { InputStream is = getConfigurationSource().getInputStream(); Properties props = new Properties(); try { props.load(is); } catch (Exception e) { LOGGER.error("Could not read configuration file [{}].", getConfigurationSource().toString(), e); return; } // If we reach here, then the config file is alright. doConfigure(props); } @Override public Configuration reconfigure() { try { final ConfigurationSource source = getConfigurationSource().resetInputStream(); if (source == null) { return null; } final PropertiesConfigurationFactory factory = new PropertiesConfigurationFactory(); final PropertiesConfiguration config = (PropertiesConfiguration) factory.getConfiguration(getLoggerContext(), source); return config == null || config.getState() != State.INITIALIZING ? null : config; } catch (final IOException ex) { LOGGER.error("Cannot locate file {}: {}", getConfigurationSource(), ex); } return null; } /** * Read configuration from a file. <b>The existing configuration is * not cleared nor reset.</b> If you require a different behavior, * then call {@link LogManager#resetConfiguration * resetConfiguration} method before calling * <code>doConfigure</code>. * * <p>The configuration file consists of statements in the format * <code>key=value</code>. The syntax of different configuration * elements are discussed below. * * <p>The level value can consist of the string values OFF, FATAL, * ERROR, WARN, INFO, DEBUG, ALL or a <em>custom level</em> value. A * custom level value can be specified in the form * level#classname. By default the repository-wide threshold is set * to the lowest possible value, namely the level <code>ALL</code>. * </p> * * * <h3>Appender configuration</h3> * * <p>Appender configuration syntax is: * <pre> * # For appender named <i>appenderName</i>, set its class. * # Note: The appender name can contain dots. * log4j.appender.appenderName=fully.qualified.name.of.appender.class * * # Set appender specific options. * log4j.appender.appenderName.option1=value1 * ... * log4j.appender.appenderName.optionN=valueN * </pre> * <p> * For each named appender you can configure its {@link Layout}. The * syntax for configuring an appender's layout is: * <pre> * log4j.appender.appenderName.layout=fully.qualified.name.of.layout.class * log4j.appender.appenderName.layout.option1=value1 * .... * log4j.appender.appenderName.layout.optionN=valueN * </pre> * <p> * The syntax for adding {@link Filter}s to an appender is: * <pre> * log4j.appender.appenderName.filter.ID=fully.qualified.name.of.filter.class * log4j.appender.appenderName.filter.ID.option1=value1 * ... * log4j.appender.appenderName.filter.ID.optionN=valueN * </pre> * The first line defines the class name of the filter identified by ID; * subsequent lines with the same ID specify filter option - value * pairs. Multiple filters are added to the appender in the lexicographic * order of IDs. * <p> * The syntax for adding an {@link ErrorHandler} to an appender is: * <pre> * log4j.appender.appenderName.errorhandler=fully.qualified.name.of.errorhandler.class * log4j.appender.appenderName.errorhandler.appender-ref=appenderName * log4j.appender.appenderName.errorhandler.option1=value1 * ... * log4j.appender.appenderName.errorhandler.optionN=valueN * </pre> * * <h3>Configuring loggers</h3> * * <p>The syntax for configuring the root logger is: * <pre> * log4j.rootLogger=[level], appenderName, appenderName, ... * </pre> * * <p>This syntax means that an optional <em>level</em> can be * supplied followed by appender names separated by commas. * * <p>The level value can consist of the string values OFF, FATAL, * ERROR, WARN, INFO, DEBUG, ALL or a <em>custom level</em> value. A * custom level value can be specified in the form * <code>level#classname</code>. * * <p>If a level value is specified, then the root level is set * to the corresponding level. If no level value is specified, * then the root level remains untouched. * * <p>The root logger can be assigned multiple appenders. * * <p>Each <i>appenderName</i> (separated by commas) will be added to * the root logger. The named appender is defined using the * appender syntax defined above. * * <p>For non-root categories the syntax is almost the same: * <pre> * log4j.logger.logger_name=[level|INHERITED|NULL], appenderName, appenderName, ... * </pre> * * <p>The meaning of the optional level value is discussed above * in relation to the root logger. In addition however, the value * INHERITED can be specified meaning that the named logger should * inherit its level from the logger hierarchy. * * <p>If no level value is supplied, then the level of the * named logger remains untouched. * * <p>By default categories inherit their level from the * hierarchy. However, if you set the level of a logger and later * decide that that logger should inherit its level, then you should * specify INHERITED as the value for the level value. NULL is a * synonym for INHERITED. * * <p>Similar to the root logger syntax, each <i>appenderName</i> * (separated by commas) will be attached to the named logger. * * <p>See the <a href="../../../../manual.html#additivity">appender * additivity rule</a> in the user manual for the meaning of the * <code>additivity</code> flag. * * * # Set options for appender named "A1". * # Appender "A1" will be a SyslogAppender * log4j.appender.A1=org.apache.log4j.net.SyslogAppender * * # The syslog daemon resides on www.abc.net * log4j.appender.A1.SyslogHost=www.abc.net * * # A1's layout is a PatternLayout, using the conversion pattern * # <b>%r %-5p %c{2} %M.%L %x - %m\n</b>. Thus, the log output will * # include # the relative time since the start of the application in * # milliseconds, followed by the level of the log request, * # followed by the two rightmost components of the logger name, * # followed by the callers method name, followed by the line number, * # the nested diagnostic context and finally the message itself. * # Refer to the documentation of {@link PatternLayout} for further information * # on the syntax of the ConversionPattern key. * log4j.appender.A1.layout=org.apache.log4j.PatternLayout * log4j.appender.A1.layout.ConversionPattern=%-4r %-5p %c{2} %M.%L %x - %m\n * * # Set options for appender named "A2" * # A2 should be a RollingFileAppender, with maximum file size of 10 MB * # using at most one backup file. A2's layout is TTCC, using the * # ISO8061 date format with context printing enabled. * log4j.appender.A2=org.apache.log4j.RollingFileAppender * log4j.appender.A2.MaxFileSize=10MB * log4j.appender.A2.MaxBackupIndex=1 * log4j.appender.A2.layout=org.apache.log4j.TTCCLayout * log4j.appender.A2.layout.ContextPrinting=enabled * log4j.appender.A2.layout.DateFormat=ISO8601 * * # Root logger set to DEBUG using the A2 appender defined above. * log4j.rootLogger=DEBUG, A2 * * # Logger definitions: * # The SECURITY logger inherits is level from root. However, it's output * # will go to A1 appender defined above. It's additivity is non-cumulative. * log4j.logger.SECURITY=INHERIT, A1 * log4j.additivity.SECURITY=false * * # Only warnings or above will be logged for the logger "SECURITY.access". * # Output will go to A1. * log4j.logger.SECURITY.access=WARN * * * # The logger "class.of.the.day" inherits its level from the * # logger hierarchy. Output will go to the appender's of the root * # logger, A2 in this case. * log4j.logger.class.of.the.day=INHERIT * </pre> * * <p>Refer to the <b>setOption</b> method in each Appender and * Layout for class specific options. * * <p>Use the <code>#</code> or <code>!</code> characters at the * beginning of a line for comments. * * <p> */ private void doConfigure(Properties properties) { String status = "error"; String value = properties.getProperty(DEBUG_KEY); if (value == null) { value = properties.getProperty("log4j.configDebug"); if (value != null) { LOGGER.warn("[log4j.configDebug] is deprecated. Use [log4j.debug] instead."); } } if (value != null) { status = OptionConverter.toBoolean(value, false) ? "debug" : "error"; } final StatusConfiguration statusConfig = new StatusConfiguration().withStatus(status); statusConfig.initialize(); configureRoot(properties); parseLoggers(properties); LOGGER.debug("Finished configuring."); } // -------------------------------------------------------------------------- // Internal stuff // -------------------------------------------------------------------------- private void configureRoot(Properties props) { String effectiveFrefix = ROOT_LOGGER_PREFIX; String value = OptionConverter.findAndSubst(ROOT_LOGGER_PREFIX, props); if (value == null) { value = OptionConverter.findAndSubst(ROOT_CATEGORY_PREFIX, props); effectiveFrefix = ROOT_CATEGORY_PREFIX; } if (value == null) { LOGGER.debug("Could not find root logger information. Is this OK?"); } else { LoggerConfig root = getRootLogger(); parseLogger(props, root, effectiveFrefix, INTERNAL_ROOT_NAME, value); } } /** * Parse non-root elements, such non-root categories and renderers. */ private void parseLoggers(Properties props) { Enumeration enumeration = props.propertyNames(); while (enumeration.hasMoreElements()) { String key = (String) enumeration.nextElement(); if (key.startsWith(CATEGORY_PREFIX) || key.startsWith(LOGGER_PREFIX)) { String loggerName = null; if (key.startsWith(CATEGORY_PREFIX)) { loggerName = key.substring(CATEGORY_PREFIX.length()); } else if (key.startsWith(LOGGER_PREFIX)) { loggerName = key.substring(LOGGER_PREFIX.length()); } String value = OptionConverter.findAndSubst(key, props); LoggerConfig loggerConfig = getLogger(loggerName); if (loggerConfig == null) { boolean additivity = getAdditivityForLogger(props, loggerName); loggerConfig = new LoggerConfig(loggerName, org.apache.logging.log4j.Level.ERROR, additivity); addLogger(loggerName, loggerConfig); } parseLogger(props, loggerConfig, key, loggerName, value); } } } /** * Parse the additivity option for a non-root category. */ private boolean getAdditivityForLogger(Properties props, String loggerName) { boolean additivity = true; String key = ADDITIVITY_PREFIX + loggerName; String value = OptionConverter.findAndSubst(key, props); LOGGER.debug("Handling {}=[{}]", key, value); // touch additivity only if necessary if ((value != null) && (!value.equals(""))) { additivity = OptionConverter.toBoolean(value, true); } return additivity; } /** * This method must work for the root category as well. */ private void parseLogger(Properties props, LoggerConfig logger, String optionKey, String loggerName, String value) { LOGGER.debug("Parsing for [{}] with value=[{}].", loggerName, value); // We must skip over ',' but not white space StringTokenizer st = new StringTokenizer(value, ","); // If value is not in the form ", appender.." or "", then we should set the level of the logger. if (!(value.startsWith(",") || value.equals(""))) { // just to be on the safe side... if (!st.hasMoreTokens()) { return; } String levelStr = st.nextToken(); LOGGER.debug("Level token is [{}].", levelStr); org.apache.logging.log4j.Level level = levelStr == null ? org.apache.logging.log4j.Level.ERROR : OptionConverter.convertLevel(levelStr, org.apache.logging.log4j.Level.DEBUG); logger.setLevel(level); LOGGER.debug("Logger {} level set to {}", loggerName, level); } Appender appender; String appenderName; while (st.hasMoreTokens()) { appenderName = st.nextToken().trim(); if (appenderName == null || appenderName.equals(",")) { continue; } LOGGER.debug("Parsing appender named \"{}\".", appenderName); appender = parseAppender(props, appenderName); if (appender != null) { LOGGER.debug("Adding appender named [{}] to loggerConfig [{}].", appenderName, logger.getName()); logger.addAppender(getAppender(appenderName), null, null); } else { LOGGER.debug("Appender named [{}] not found.", appenderName); } } } public Appender parseAppender(Properties props, String appenderName) { Appender appender = registry.get(appenderName); if ((appender != null)) { LOGGER.debug("Appender \"" + appenderName + "\" was already parsed."); return appender; } // Appender was not previously initialized. final String prefix = APPENDER_PREFIX + appenderName; final String layoutPrefix = prefix + ".layout"; final String filterPrefix = APPENDER_PREFIX + appenderName + ".filter."; String className = OptionConverter.findAndSubst(prefix, props); appender = manager.parseAppender(appenderName, className, prefix, layoutPrefix, filterPrefix, props, this); if (appender == null) { appender = buildAppender(appenderName, className, prefix, layoutPrefix, filterPrefix, props); } else { registry.put(appenderName, appender); if (appender instanceof AppenderWrapper) { addAppender(((AppenderWrapper) appender).getAppender()); } else { addAppender(new AppenderAdapter(appender).getAdapter()); } } return appender; } private Appender buildAppender(final String appenderName, final String className, final String prefix, final String layoutPrefix, final String filterPrefix, final Properties props) { Appender appender = newInstanceOf(className, "Appender"); if (appender == null) { return null; } appender.setName(appenderName); appender.setLayout(parseLayout(layoutPrefix, appenderName, props)); final String errorHandlerPrefix = prefix + ".errorhandler"; String errorHandlerClass = OptionConverter.findAndSubst(errorHandlerPrefix, props); if (errorHandlerClass != null) { ErrorHandler eh = parseErrorHandler(props, errorHandlerPrefix, errorHandlerClass, appender); if (eh != null) { appender.setErrorHandler(eh); } } parseAppenderFilters(props, filterPrefix, appenderName); String[] keys = new String[] { layoutPrefix, }; addProperties(appender, keys, props, prefix); if (appender instanceof AppenderWrapper) { addAppender(((AppenderWrapper) appender).getAppender()); } else { addAppender(new AppenderAdapter(appender).getAdapter()); } registry.put(appenderName, appender); return appender; } public Layout parseLayout(String layoutPrefix, String appenderName, Properties props) { String layoutClass = OptionConverter.findAndSubst(layoutPrefix, props); if (layoutClass == null) { return null; } Layout layout = manager.parseLayout(layoutClass, layoutPrefix, props, this); if (layout == null) { layout = buildLayout(layoutPrefix, layoutClass, appenderName, props); } return layout; } private Layout buildLayout(String layoutPrefix, String className, String appenderName, Properties props) { Layout layout = newInstanceOf(className, "Layout"); if (layout == null) { return null; } LOGGER.debug("Parsing layout options for \"{}\".", appenderName); PropertySetter.setProperties(layout, props, layoutPrefix + "."); LOGGER.debug("End of parsing for \"{}\".", appenderName); return layout; } public ErrorHandler parseErrorHandler(final Properties props, final String errorHandlerPrefix, final String errorHandlerClass, final Appender appender) { ErrorHandler eh = newInstanceOf(errorHandlerClass, "ErrorHandler"); final String[] keys = new String[] { errorHandlerPrefix + "." + ROOT_REF, errorHandlerPrefix + "." + LOGGER_REF, errorHandlerPrefix + "." + APPENDER_REF_TAG }; addProperties(eh, keys, props, errorHandlerPrefix); return eh; } public void addProperties(final Object obj, final String[] keys, final Properties props, final String prefix) { final Properties edited = new Properties(); props.stringPropertyNames().stream().filter(name -> { if (name.startsWith(prefix)) { for (String key : keys) { if (name.equals(key)) { return false; } } return true; } return false; }).forEach(name -> edited.put(name, props.getProperty(name))); PropertySetter.setProperties(obj, edited, prefix + "."); } public Filter parseAppenderFilters(Properties props, String filterPrefix, String appenderName) { // extract filters and filter options from props into a hashtable mapping // the property name defining the filter class to a list of pre-parsed // name-value pairs associated to that filter int fIdx = filterPrefix.length(); SortedMap<String, List<NameValue>> filters = new TreeMap<>(); Enumeration e = props.keys(); String name = ""; while (e.hasMoreElements()) { String key = (String) e.nextElement(); if (key.startsWith(filterPrefix)) { int dotIdx = key.indexOf('.', fIdx); String filterKey = key; if (dotIdx != -1) { filterKey = key.substring(0, dotIdx); name = key.substring(dotIdx + 1); } List<NameValue> filterOpts = filters.computeIfAbsent(filterKey, k -> new ArrayList<>()); if (dotIdx != -1) { String value = OptionConverter.findAndSubst(key, props); filterOpts.add(new NameValue(name, value)); } } } Filter head = null; Filter next = null; for (Map.Entry<String, List<NameValue>> entry : filters.entrySet()) { String clazz = props.getProperty(entry.getKey()); Filter filter = null; if (clazz != null) { filter = manager.parseFilter(clazz, filterPrefix, props, this); if (filter == null) { LOGGER.debug("Filter key: [{}] class: [{}] props: {}", entry.getKey(), clazz, entry.getValue()); filter = buildFilter(clazz, appenderName, entry.getValue()); } } if (filter != null) { if (head != null) { head = filter; } else { next.setNext(filter); } next = filter; } } return head; } private Filter buildFilter(String className, String appenderName, List<NameValue> props) { Filter filter = newInstanceOf(className, "Filter"); if (filter != null) { PropertySetter propSetter = new PropertySetter(filter); for (NameValue property : props) { propSetter.setProperty(property.key, property.value); } propSetter.activate(); } return filter; } private static <T> T newInstanceOf(String className, String type) { try { return LoaderUtil.newInstanceOf(className); } catch (ClassNotFoundException | IllegalAccessException | NoSuchMethodException | InstantiationException | InvocationTargetException ex) { LOGGER.error("Unable to create {} {} due to {}:{}", type, className, ex.getClass().getSimpleName(), ex.getMessage()); return null; } } private static class NameValue { String key, value; NameValue(String key, String value) { this.key = key; this.value = value; } @Override public String toString() { return key + "=" + value; } } }
⏎ org/apache/log4j/config/PropertiesConfiguration.java
Or download all of them as a single archive file:
File name: log4j-1.2-api-2.14.1-sources.jar File size: 168047 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j JMX GUI
⇐ Source Code for Apache Log4j Flume Appender
2015-11-17, 38185👍, 0💬
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