/*

 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.management.snmp.util;

import java.util.logging.Logger;

import java.util.logging.Level;

public class MibLogger {

    final Logger logger;

    final String className;

    static String getClassName(Class<?> clazz) {

        if (clazz == null) return null;

        if (clazz.isArray())

            return getClassName(clazz.getComponentType()) + "[]";

        final String fullname = clazz.getName();

        final int lastpoint   = fullname.lastIndexOf('.');

        final int len         = fullname.length();

        if ((lastpoint < 0) || (lastpoint >= len))

            return fullname;

        else return fullname.substring(lastpoint+1,len);

    }

    static String getLoggerName(Class<?> clazz) {

        if (clazz == null) return "sun.management.snmp.jvminstr";

        Package p = clazz.getPackage();

        if (p == null) return "sun.management.snmp.jvminstr";

        final String pname = p.getName();

        if (pname == null) return "sun.management.snmp.jvminstr";

        else return pname;

    }

    public MibLogger(Class<?> clazz) {

        this(getLoggerName(clazz),getClassName(clazz));

    }

    public MibLogger(Class<?> clazz, String postfix) {

        this(getLoggerName(clazz)+((postfix==null)?"":"."+postfix),

             getClassName(clazz));

    }

    public MibLogger(String className) {

        this("sun.management.snmp.jvminstr",className);

    }

    public MibLogger(String loggerName, String className) {

        Logger l = null;

        try {

            l = Logger.getLogger(loggerName);

        } catch (Exception x) {

            // OK. Should not happen

        }

        logger = l;

        this.className=className;

    }

    protected Logger getLogger() {

        return logger;

    }

    public boolean isTraceOn() {

        final Logger l = getLogger();

        if (l==null) return false;

        return l.isLoggable(Level.FINE);

    }

    public boolean isDebugOn() {

        final Logger l = getLogger();

        if (l==null) return false;

        return l.isLoggable(Level.FINEST);

    }

    public boolean isInfoOn() {

        final Logger l = getLogger();

        if (l==null) return false;

        return l.isLoggable(Level.INFO);

    }

    public boolean isConfigOn() {

        final Logger l = getLogger();

        if (l==null) return false;

        return l.isLoggable(Level.CONFIG);

    }

    public void config(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.CONFIG,className,

                        func,msg);

    }

    public void config(String func, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.CONFIG,className,

                        func,t.toString(),t);

    }

    public void config(String func, String msg, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.CONFIG,className,

                        func,msg,t);

    }

    public void error(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.SEVERE,className,

                        func,msg);

    }

    public void info(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.INFO,className,

                        func,msg);

    }

    public void info(String func, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.INFO,className,

                        func,t.toString(),t);

    }

    public void info(String func, String msg, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.INFO,className,

                        func,msg,t);

    }

    public void warning(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.WARNING,className,

                        func,msg);

    }

    public void warning(String func, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.WARNING,className,

                        func,t.toString(),t);

    }

    public void warning(String func, String msg, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.WARNING,className,

                        func,msg,t);

    }

    public void trace(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINE,className,

                        func,msg);

    }

    public void trace(String func, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINE,className,

                        func,t.toString(),t);

    }

    public void trace(String func, String msg, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINE,className,

                        func,msg,t);

    }

    public void debug(String func, String msg) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINEST,className,

                        func,msg);

    }

    public void debug(String func, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINEST,className,

                        func,t.toString(),t);

    }

    public void debug(String func, String msg, Throwable t) {

        final Logger l = getLogger();

        if (l!=null) l.logp(Level.FINEST,className,

                        func,msg,t);

    }

}