org.jboss.logging.Log4jLoggerProvider Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 *
 * Copyright 2023 Red Hat, Inc.
 *
 * Licensed 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.jboss.logging;

import java.util.Collections;
import java.util.Map;

import org.apache.log4j.MDC;
import org.apache.log4j.NDC;

/**
 * An implementation of the {@linkplain LoggerProvider log provider} for log4j.
 * 
 * Please note that log4j reached end of life on August 5, 2015. Prefer using a log manager and provider.
 * 
 */
public final class Log4jLoggerProvider implements LoggerProvider {

    @Override
    public Logger getLogger(final String name) {
        return new Log4jLogger("".equals(name) ? "ROOT" : name);
    }

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

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

    @Override
    public Map getMdcMap() {
        @SuppressWarnings("unchecked")
        final Map map = MDC.getContext();
        return map == null ? Collections.emptyMap() : map;
    }

    @Override
    public Object putMdc(String key, Object val) {
        try {
            return MDC.get(key);
        } finally {
            MDC.put(key, val);
        }
    }

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

    @Override
    public void clearNdc() {
        NDC.remove();
    }

    @Override
    public String getNdc() {
        return NDC.get();
    }

    @Override
    public int getNdcDepth() {
        return NDC.getDepth();
    }

    @Override
    public String peekNdc() {
        return NDC.peek();
    }

    @Override
    public String popNdc() {
        return NDC.pop();
    }

    @Override
    public void pushNdc(String message) {
        NDC.push(message);
    }

    @Override
    public void setNdcMaxDepth(int maxDepth) {
        NDC.setMaxDepth(maxDepth);
    }
}