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Source Code for Apache Log4j SLF4J Binding
Apache Log4j SLF4J Binding allows applications coded to the SLF4J API to use Log4j 2 as the implementation.
Bytecode (Java 8) for Apache Log4j SLF4J Binding is provided in a separate JAR file like log4j-slf4j-impl-2.14.1.jar.
Source Code files for Apache Log4j IOStreams 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 SLF4J Binding 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/logging/slf4j/Log4jLogger.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.logging.slf4j; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable; import org.apache.logging.log4j.Level; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.message.Message; import org.apache.logging.log4j.message.ParameterizedMessage; import org.apache.logging.log4j.message.SimpleMessage; import org.apache.logging.log4j.spi.ExtendedLogger; import org.apache.logging.log4j.util.LoaderUtil; import org.slf4j.Marker; import org.slf4j.MarkerFactory; import org.slf4j.impl.StaticMarkerBinder; import org.slf4j.spi.LocationAwareLogger; /** * SLF4J logger implementation that uses Log4j. */ public class Log4jLogger implements LocationAwareLogger, Serializable { public static final String FQCN = Log4jLogger.class.getName(); private static final long serialVersionUID = 7869000638091304316L; private static final Marker EVENT_MARKER = MarkerFactory.getMarker("EVENT"); private static final EventDataConverter CONVERTER = createConverter(); private final boolean eventLogger; private transient ExtendedLogger logger; private final String name; public Log4jLogger(final ExtendedLogger logger, final String name) { this.logger = logger; this.eventLogger = "EventLogger".equals(name); this.name = name; } @Override public void trace(final String format) { logger.logIfEnabled(FQCN, Level.TRACE, null, format); } @Override public void trace(final String format, final Object o) { logger.logIfEnabled(FQCN, Level.TRACE, null, format, o); } @Override public void trace(final String format, final Object arg1, final Object arg2) { logger.logIfEnabled(FQCN, Level.TRACE, null, format, arg1, arg2); } @Override public void trace(final String format, final Object... args) { logger.logIfEnabled(FQCN, Level.TRACE, null, format, args); } @Override public void trace(final String format, final Throwable t) { logger.logIfEnabled(FQCN, Level.TRACE, null, format, t); } @Override public boolean isTraceEnabled() { return logger.isEnabled(Level.TRACE, null, null); } @Override public boolean isTraceEnabled(final Marker marker) { return logger.isEnabled(Level.TRACE, getMarker(marker), null); } @Override public void trace(final Marker marker, final String s) { logger.logIfEnabled(FQCN, Level.TRACE, getMarker(marker), s); } @Override public void trace(final Marker marker, final String s, final Object o) { logger.logIfEnabled(FQCN, Level.TRACE, getMarker(marker), s, o); } @Override public void trace(final Marker marker, final String s, final Object o, final Object o1) { logger.logIfEnabled(FQCN, Level.TRACE, getMarker(marker), s, o, o1); } @Override public void trace(final Marker marker, final String s, final Object... objects) { logger.logIfEnabled(FQCN, Level.TRACE, getMarker(marker), s, objects); } @Override public void trace(final Marker marker, final String s, final Throwable throwable) { logger.logIfEnabled(FQCN, Level.TRACE, getMarker(marker), s, throwable); } @Override public void debug(final String format) { logger.logIfEnabled(FQCN, Level.DEBUG, null, format); } @Override public void debug(final String format, final Object o) { logger.logIfEnabled(FQCN, Level.DEBUG, null, format, o); } @Override public void debug(final String format, final Object arg1, final Object arg2) { logger.logIfEnabled(FQCN, Level.DEBUG, null, format, arg1, arg2); } @Override public void debug(final String format, final Object... args) { logger.logIfEnabled(FQCN, Level.DEBUG, null, format, args); } @Override public void debug(final String format, final Throwable t) { logger.logIfEnabled(FQCN, Level.DEBUG, null, format, t); } @Override public boolean isDebugEnabled() { return logger.isEnabled(Level.DEBUG, null, null); } @Override public boolean isDebugEnabled(final Marker marker) { return logger.isEnabled(Level.DEBUG, getMarker(marker), null); } @Override public void debug(final Marker marker, final String s) { logger.logIfEnabled(FQCN, Level.DEBUG, getMarker(marker), s); } @Override public void debug(final Marker marker, final String s, final Object o) { logger.logIfEnabled(FQCN, Level.DEBUG, getMarker(marker), s, o); } @Override public void debug(final Marker marker, final String s, final Object o, final Object o1) { logger.logIfEnabled(FQCN, Level.DEBUG, getMarker(marker), s, o, o1); } @Override public void debug(final Marker marker, final String s, final Object... objects) { logger.logIfEnabled(FQCN, Level.DEBUG, getMarker(marker), s, objects); } @Override public void debug(final Marker marker, final String s, final Throwable throwable) { logger.logIfEnabled(FQCN, Level.DEBUG, getMarker(marker), s, throwable); } @Override public void info(final String format) { logger.logIfEnabled(FQCN, Level.INFO, null, format); } @Override public void info(final String format, final Object o) { logger.logIfEnabled(FQCN, Level.INFO, null, format, o); } @Override public void info(final String format, final Object arg1, final Object arg2) { logger.logIfEnabled(FQCN, Level.INFO, null, format, arg1, arg2); } @Override public void info(final String format, final Object... args) { logger.logIfEnabled(FQCN, Level.INFO, null, format, args); } @Override public void info(final String format, final Throwable t) { logger.logIfEnabled(FQCN, Level.INFO, null, format, t); } @Override public boolean isInfoEnabled() { return logger.isEnabled(Level.INFO, null, null); } @Override public boolean isInfoEnabled(final Marker marker) { return logger.isEnabled(Level.INFO, getMarker(marker), null); } @Override public void info(final Marker marker, final String s) { logger.logIfEnabled(FQCN, Level.INFO, getMarker(marker), s); } @Override public void info(final Marker marker, final String s, final Object o) { logger.logIfEnabled(FQCN, Level.INFO, getMarker(marker), s, o); } @Override public void info(final Marker marker, final String s, final Object o, final Object o1) { logger.logIfEnabled(FQCN, Level.INFO, getMarker(marker), s, o, o1); } @Override public void info(final Marker marker, final String s, final Object... objects) { logger.logIfEnabled(FQCN, Level.INFO, getMarker(marker), s, objects); } @Override public void info(final Marker marker, final String s, final Throwable throwable) { logger.logIfEnabled(FQCN, Level.INFO, getMarker(marker), s, throwable); } @Override public void warn(final String format) { logger.logIfEnabled(FQCN, Level.WARN, null, format); } @Override public void warn(final String format, final Object o) { logger.logIfEnabled(FQCN, Level.WARN, null, format, o); } @Override public void warn(final String format, final Object arg1, final Object arg2) { logger.logIfEnabled(FQCN, Level.WARN, null, format, arg1, arg2); } @Override public void warn(final String format, final Object... args) { logger.logIfEnabled(FQCN, Level.WARN, null, format, args); } @Override public void warn(final String format, final Throwable t) { logger.logIfEnabled(FQCN, Level.WARN, null, format, t); } @Override public boolean isWarnEnabled() { return logger.isEnabled(Level.WARN, null, null); } @Override public boolean isWarnEnabled(final Marker marker) { return logger.isEnabled(Level.WARN, getMarker(marker), null); } @Override public void warn(final Marker marker, final String s) { logger.logIfEnabled(FQCN, Level.WARN, getMarker(marker), s); } @Override public void warn(final Marker marker, final String s, final Object o) { logger.logIfEnabled(FQCN, Level.WARN, getMarker(marker), s, o); } @Override public void warn(final Marker marker, final String s, final Object o, final Object o1) { logger.logIfEnabled(FQCN, Level.WARN, getMarker(marker), s, o, o1); } @Override public void warn(final Marker marker, final String s, final Object... objects) { logger.logIfEnabled(FQCN, Level.WARN, getMarker(marker), s, objects); } @Override public void warn(final Marker marker, final String s, final Throwable throwable) { logger.logIfEnabled(FQCN, Level.WARN, getMarker(marker), s, throwable); } @Override public void error(final String format) { logger.logIfEnabled(FQCN, Level.ERROR, null, format); } @Override public void error(final String format, final Object o) { logger.logIfEnabled(FQCN, Level.ERROR, null, format, o); } @Override public void error(final String format, final Object arg1, final Object arg2) { logger.logIfEnabled(FQCN, Level.ERROR, null, format, arg1, arg2); } @Override public void error(final String format, final Object... args) { logger.logIfEnabled(FQCN, Level.ERROR, null, format, args); } @Override public void error(final String format, final Throwable t) { logger.logIfEnabled(FQCN, Level.ERROR, null, format, t); } @Override public boolean isErrorEnabled() { return logger.isEnabled(Level.ERROR, null, null); } @Override public boolean isErrorEnabled(final Marker marker) { return logger.isEnabled(Level.ERROR, getMarker(marker), null); } @Override public void error(final Marker marker, final String s) { logger.logIfEnabled(FQCN, Level.ERROR, getMarker(marker), s); } @Override public void error(final Marker marker, final String s, final Object o) { logger.logIfEnabled(FQCN, Level.ERROR, getMarker(marker), s, o); } @Override public void error(final Marker marker, final String s, final Object o, final Object o1) { logger.logIfEnabled(FQCN, Level.ERROR, getMarker(marker), s, o, o1); } @Override public void error(final Marker marker, final String s, final Object... objects) { logger.logIfEnabled(FQCN, Level.ERROR, getMarker(marker), s, objects); } @Override public void error(final Marker marker, final String s, final Throwable throwable) { logger.logIfEnabled(FQCN, Level.ERROR, getMarker(marker), s, throwable); } @Override public void log(final Marker marker, final String fqcn, final int level, final String message, final Object[] params, Throwable throwable) { final Level log4jLevel = getLevel(level); final org.apache.logging.log4j.Marker log4jMarker = getMarker(marker); if (!logger.isEnabled(log4jLevel, log4jMarker, message, params)) { return; } final Message msg; if (CONVERTER != null && eventLogger && marker != null && marker.contains(EVENT_MARKER)) { msg = CONVERTER.convertEvent(message, params, throwable); } else if (params == null) { msg = new SimpleMessage(message); } else { msg = new ParameterizedMessage(message, params, throwable); if (throwable != null) { throwable = msg.getThrowable(); } } logger.logMessage(fqcn, log4jLevel, log4jMarker, msg, throwable); } private static org.apache.logging.log4j.Marker getMarker(final Marker marker) { if (marker == null) { return null; } else if (marker instanceof Log4jMarker) { return ((Log4jMarker) marker).getLog4jMarker(); } else { final Log4jMarkerFactory factory = (Log4jMarkerFactory) StaticMarkerBinder.SINGLETON.getMarkerFactory(); return ((Log4jMarker) factory.getMarker(marker)).getLog4jMarker(); } } @Override public String getName() { return name; } /** * Always treat de-serialization as a full-blown constructor, by validating the final state of * the de-serialized object. */ private void readObject(final ObjectInputStream aInputStream) throws ClassNotFoundException, IOException { // always perform the default de-serialization first aInputStream.defaultReadObject(); logger = LogManager.getContext().getLogger(name); } /** * This is the default implementation of writeObject. Customise if necessary. */ private void writeObject(final ObjectOutputStream aOutputStream) throws IOException { // perform the default serialization for all non-transient, non-static fields aOutputStream.defaultWriteObject(); } private static EventDataConverter createConverter() { try { LoaderUtil.loadClass("org.slf4j.ext.EventData"); return new EventDataConverter(); } catch (final ClassNotFoundException cnfe) { return null; } } private static Level getLevel(final int i) { switch (i) { case TRACE_INT: return Level.TRACE; case DEBUG_INT: return Level.DEBUG; case INFO_INT: return Level.INFO; case WARN_INT: return Level.WARN; case ERROR_INT: return Level.ERROR; } return Level.ERROR; } }
⏎ org/apache/logging/slf4j/Log4jLogger.java
Or download all of them as a single archive file:
File name: log4j-slf4j-impl-2.14.1-sources.jar File size: 23635 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j to SLF4J Adapter
⇐ Source Code for Apache Log4j Commons Logging Bridge
2015-11-04, 15335👍, 0💬
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