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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2010, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.logging;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;
import org.jboss.logmanager.LogContext;
import org.jboss.logmanager.MDC;
import org.jboss.logmanager.NDC;

import static org.jboss.logmanager.Logger.AttachmentKey;

final class JBossLogManagerProvider implements LoggerProvider {

    private static final AttachmentKey KEY = new AttachmentKey();

    public Logger getLogger(final String name) {
        final SecurityManager sm = System.getSecurityManager();
        if (sm != null) {
            return AccessController.doPrivileged(new PrivilegedAction() {
                public Logger run() {
                    return doGetLogger(name);
                }
            });
        } else {
            return doGetLogger(name);
        }
    }

    private static Logger doGetLogger(final String name) {
        Logger l = LogContext.getLogContext().getAttachment(name, KEY);
        if (l != null) {
            return l;
        }
        final org.jboss.logmanager.Logger logger = org.jboss.logmanager.Logger.getLogger(name);
        l = new JBossLogManagerLogger(name, logger);
        Logger a = logger.attachIfAbsent(KEY, l);
        if (a == null) {
            return l;
        } else {
            return a;
        }
    }

    public Object putMdc(final String key, final Object value) {
        return MDC.put(key, String.valueOf(value));
    }

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

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

    @SuppressWarnings({ "unchecked" })
    public Map getMdcMap() {
        // we can re-define the erasure of this map because MDC does not make further use of the copy
        return (Map)MDC.copy();
    }

    public void clearNdc() {
        NDC.clear();
    }

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

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

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

    public String peekNdc() {
        return NDC.get();
    }

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

    public void setNdcMaxDepth(final int maxDepth) {
        NDC.trimTo(maxDepth);
    }
}