org.ops4j.pax.logging.jbosslogging.PaxLoggingLoggerProvider Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of pax-logging-api Show documentation

The Pax Logging API Library is to allow for the Pax Logging Service to be reloaded without stopping the many dependent bundles. It also contains the OSGi Log Service API and the Knopflerfish Log API.

There is a newer version: 2.2.7

Show newest version

/*
 * 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.jbosslogging;

import java.util.Map;

import org.jboss.logging.Logger;
import org.jboss.logging.LoggerProvider;
import org.ops4j.pax.logging.PaxContext;
import org.ops4j.pax.logging.PaxLogger;
import org.ops4j.pax.logging.PaxLoggingManager;
import org.ops4j.pax.logging.PaxLoggingService;
import org.ops4j.pax.logging.internal.Activator;
import org.ops4j.pax.logging.spi.support.FallbackLogFactory;
import org.osgi.framework.FrameworkUtil;

/**
 * {@link LoggerProvider} bridging JBoss Logging to Pax Logging.
 */
public class PaxLoggingLoggerProvider implements LoggerProvider {

    private static PaxLoggingManager paxLogging;

    /** {@link PaxContext} used when {@link org.ops4j.pax.logging.PaxLoggingService} is not available */
    private static PaxContext m_defaultContext = new PaxContext();
    /** {@link PaxContext} obtained from {@link org.ops4j.pax.logging.PaxLoggingService} */
    private static PaxContext m_context;

    public static void setPaxLoggingManager(PaxLoggingManager manager) {
        paxLogging = manager;
    }

    @Override
    public Logger getLogger(String name) {
        PaxLogger paxLogger;
        if (paxLogging == null) {
            paxLogger = FallbackLogFactory.createFallbackLog(FrameworkUtil.getBundle(Logger.class), name);
        } else {
            paxLogger = paxLogging.getLogger(name, JBossLoggingLogger.JBOSS_LOGGING_FQCN);
        }
        JBossLoggingLogger logger = new JBossLoggingLogger(name, paxLogger);
        if (paxLogging == null) {
            // just add the logger which PaxLoggingManager need to be replaced.
            synchronized (Activator.m_loggers) {
                Activator.m_loggers.add(logger);
            }
        }
        return logger;
    }

    @Override
    public void clearMdc() {
        getContext().clear();
    }

    @Override
    public Object putMdc(String key, Object value) {
        Object previous = getMdc(key);
        getContext().put(key, value);
        return previous;
    }

    @Override
    public Object getMdc(String key) {
        return getContext().get(key);
    }

    @Override
    public void removeMdc(String key) {
        getContext().remove(key);
    }

    @Override
    public Map getMdcMap() {
        return getContext().getCopyOfContextMap();
    }

    @Override
    public void clearNdc() {
        // not (yet) supported in pax-logging
    }

    @Override
    public String getNdc() {
        // not (yet) supported in pax-logging
        return null;
    }

    @Override
    public int getNdcDepth() {
        // not (yet) supported in pax-logging
        return 0;
    }

    @Override
    public String popNdc() {
        // not (yet) supported in pax-logging
        return null;
    }

    @Override
    public String peekNdc() {
        // not (yet) supported in pax-logging
        return null;
    }

    @Override
    public void pushNdc(String message) {
        // not (yet) supported in pax-logging
    }

    @Override
    public void setNdcMaxDepth(int maxDepth) {
        // not (yet) supported in pax-logging
    }

    private static PaxContext getContext() {
        PaxLoggingManager manager = PaxLoggingLoggerProvider.paxLogging;
        if (manager != null) {
            synchronized (PaxLoggingLoggerProvider.class) {
                PaxLoggingService service = manager.getPaxLoggingService();
                m_context = service != null ? service.getPaxContext() : null;
            }
        }
        return m_context != null ? m_context : m_defaultContext;
    }

}