org.ops4j.pax.logging.log4jv2.Log4jv2Logger Maven / Gradle / Ivy

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Pax Logging API Library is a collection of logging APIs from different libraries/facades. It supports SLF4J, Commons Logging, JULI Logging, Log4J1 API, Log4J2 API, JBoss Logging and Avalon APIs. Additionally, Pax Logging specific library is available as backend implementation with its specific configuration mechanisms, but it's not required.
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/*
 * 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.ops4j.pax.logging.log4jv2;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.Marker;
import org.apache.logging.log4j.message.Message;
import org.apache.logging.log4j.message.MessageFactory;
import org.apache.logging.log4j.spi.AbstractLogger;
import org.ops4j.pax.logging.PaxLogger;
import org.ops4j.pax.logging.PaxLoggingConstants;
import org.ops4j.pax.logging.PaxLoggingManager;
import org.ops4j.pax.logging.PaxLoggingManagerAwareLogger;
import org.ops4j.pax.logging.PaxMarker;
import org.ops4j.pax.logging.spi.support.FallbackLogFactory;
import org.osgi.framework.FrameworkUtil;
import org.osgi.service.log.LogLevel;

/**
 * This is the default logger that is used when no suitable logging implementation is available.
 */
public class Log4jv2Logger extends AbstractLogger implements PaxLoggingManagerAwareLogger {

    static final String LOG4J_FQCN = Logger.class.getName();

    private String m_name;
    private volatile PaxLogger m_delegate;

    public Log4jv2Logger(String name, MessageFactory messageFactory, PaxLogger delegate) {
        super(name, messageFactory);
        m_name = name;
        m_delegate = delegate;
    }

    @Override
    public void setPaxLoggingManager(PaxLoggingManager paxLoggingManager) {
        if (paxLoggingManager == null) {
            m_delegate = FallbackLogFactory.createFallbackLog(FrameworkUtil.getBundle(Log4jv2Logger.class), m_name);
        } else {
            m_delegate = paxLoggingManager.getLogger(m_name, LOG4J_FQCN);
        }
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, Message message, Throwable t) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, Object message, Throwable t) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Throwable t) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object... params) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, CharSequence message, Throwable t) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6, Object p7) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6, Object p7, Object p8) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public boolean isEnabled(Level level, Marker marker, String message, Object p0, Object p1, Object p2, Object p3, Object p4, Object p5, Object p6, Object p7, Object p8, Object p9) {
        boolean mf = marker == null || markerDecision(level, marker);
        return getLevel().intLevel() >= level.intLevel() && mf;
    }

    @Override
    public void logMessage(String fqcn, Level level, Marker marker, Message message, Throwable t) {
        try {
            // PAXLOGGING-302
            m_delegate.getPaxContext().put(PaxLoggingConstants._LOG4J2_MESSAGE, message);
            if (marker != null) {
                PaxMarker paxMarker = new PaxMarker(marker);
                if (level.intLevel() >= Level.TRACE.intLevel()) {
                    m_delegate.fqtrace(fqcn, paxMarker, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.DEBUG.intLevel()) {
                    m_delegate.fqdebug(fqcn, paxMarker, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.INFO.intLevel()) {
                    m_delegate.fqinfo(fqcn, paxMarker, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.WARN.intLevel()) {
                    m_delegate.fqwarn(fqcn, paxMarker, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.ERROR.intLevel()) {
                    m_delegate.fqerror(fqcn, paxMarker, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.FATAL.intLevel()) {
                    m_delegate.fqfatal(fqcn, paxMarker, message.getFormattedMessage(), t);
                }
            } else {
                if (level.intLevel() >= Level.TRACE.intLevel()) {
                    m_delegate.fqtrace(fqcn, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.DEBUG.intLevel()) {
                    m_delegate.fqdebug(fqcn, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.INFO.intLevel()) {
                    m_delegate.fqinfo(fqcn, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.WARN.intLevel()) {
                    m_delegate.fqwarn(fqcn, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.ERROR.intLevel()) {
                    m_delegate.fqerror(fqcn, message.getFormattedMessage(), t);
                } else if (level.intLevel() >= Level.FATAL.intLevel()) {
                    m_delegate.fqfatal(fqcn, message.getFormattedMessage(), t);
                }
            }
        } finally {
            m_delegate.getPaxContext().remove(PaxLoggingConstants._LOG4J2_MESSAGE);
        }
    }

    @Override
    public Level getLevel() {
        LogLevel logLevel = m_delegate.getLogLevel();
        if (logLevel == null) {
            return Level.OFF;
        }
        switch (logLevel) {
            case TRACE:
                return Level.TRACE;
            case DEBUG:
                return Level.DEBUG;
            case INFO:
                return Level.INFO;
            case WARN:
                return Level.WARN;
            case ERROR:
                return Level.ERROR;
            case AUDIT:
                return Level.ALL;
            default:
                return Level.OFF;
        }
    }

    private boolean markerDecision(Level level, Marker marker) {
        PaxMarker m = new PaxMarker(marker);
        if (level.intLevel() >= Level.ALL.intLevel()) {
            return true;
        } else if (level.intLevel() >= Level.TRACE.intLevel()) {
            return m_delegate.isTraceEnabled(m);
        } else if (level.intLevel() >= Level.DEBUG.intLevel()) {
            return m_delegate.isDebugEnabled(m);
        } else if (level.intLevel() >= Level.INFO.intLevel()) {
            return m_delegate.isInfoEnabled(m);
        } else if (level.intLevel() >= Level.WARN.intLevel()) {
            return m_delegate.isWarnEnabled(m);
        } else if (level.intLevel() >= Level.ERROR.intLevel()) {
            return m_delegate.isErrorEnabled(m);
        } else if (level.intLevel() >= Level.FATAL.intLevel()) {
            return m_delegate.isFatalEnabled(m);
        }
        return false;
    }

    @Override
    protected boolean requiresLocation() {
        return true;
    }

}