log4j.java

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/*
 *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 *  reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in
 *  the documentation and/or other materials provided with the
 *  distribution.
 *
 *  3. The end-user documentation included with the redistribution,
 *  if any, must include the following acknowledgment:
 *  "This product includes software developed by the
 *  Sun Microsystems, Inc. for Project JXTA."
 *  Alternately, this acknowledgment may appear in the software itself,
 *  if and wherever such third-party acknowledgments normally appear.
 *
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *  not be used to endorse or promote products derived from this
 *  software without prior written permission. For written
 *  permission, please contact Project JXTA at http://www.jxta.org.
 *
 *  5. Products derived from this software may not be called "JXTA",
 *  nor may "JXTA" appear in their name, without prior written
 *  permission of Sun.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED.  IN NO EVENT SHALL SUN MICROSYSTEMS OR
 *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *  ====================================================================
 *
 *  This software consists of voluntary contributions made by many
 *  individuals on behalf of Project JXTA.  For more
 *  information on Project JXTA, please see
 *  <http://www.jxta.org/>.
 *
 *  This license is based on the BSD license adopted by the Apache Foundation.
 *
 *  $Id: log4j.java,v 1.6 2005/12/21 23:41:25 bondolo Exp $
 */
package net.jxta.impl.shell.bin.log4j;

import java.io.IOException;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

import net.jxta.discovery.DiscoveryService;
import net.jxta.document.Advertisement;

import net.jxta.impl.shell.GetOpt;
import net.jxta.impl.shell.ShellApp;
import net.jxta.impl.shell.ShellEnv;
import net.jxta.impl.shell.ShellObject;

/**
 *  Adjust log4j levels
 */
public class log4j extends ShellApp {

    /**
     *  {@inheritDoc}
     **/
    public int startApp(String[] args) {
        ShellEnv env = getEnv();
        
        boolean fatal = false;
        boolean error = false;
        boolean warn = false;
        boolean info = false;
        boolean debug = false;
        boolean trace = false;
        
        Level level = null;
        
        GetOpt options = new GetOpt( args, 0, "fewidt" );
        
        while( true ) {
            int option;
            try {
                option = options.getNextOption();
            } catch( IllegalArgumentException badopt ) {
                consoleMessage( "Illegal argument :" + badopt );
                return syntaxError();
            }
                        
            if( -1 == option ) {
                break;
            }
            
            switch( option ) {
                
                case 'f' :
                    fatal = true;
                    break;
                    
                case 'e' :
                    error = true;
                    break;
                    
                case 'w' :
                    warn = true;
                    break;
                    
                case 'i' :
                    info = true;
                    break;
                    
                case 'd' :
                    debug = true;
                    break;
                    
                case 't' :
                    trace = true;
                    break;
                    
                default :
                    consoleMessage( "Unrecognized option" );
                    return syntaxError();
            }
        }
        
        if( fatal && (error || warn || info || debug || trace) ) {
            consoleMessage( "Cannot set more than one level" );
            return syntaxError();
        }
        
        if( error && (fatal || warn || info || debug || trace) ) {
            consoleMessage( "Cannot set more than one level" );
            return syntaxError();
        }
        
        if( warn && (fatal || error || info || debug || trace) ) {
            consoleMessage( "Cannot set more than one level" );
            return syntaxError();
        }
        
        if( info && (fatal || error || warn || debug || trace) ) {
            consoleMessage( "Cannot set more than one level" );
            return syntaxError();
        }
               
        if( debug && (fatal || error || warn || info || trace) ) {
            consoleMessage( "Cannot set more than one level" );
            return syntaxError();
        }
               
        if( fatal ) {
            level = Level.FATAL;
        }
        
        if( error ) {
            level = Level.ERROR;
        }
        
        if( warn ) {
            level = Level.WARN;
        }
        
        if( info ) {
            level = Level.INFO;
        }
        
        if( debug ) {
            level = Level.DEBUG;
        }
        
        if( trace ) {
            level = Level.TRACE;
        }
        
        String name = options.getNextParameter();
        
        if( null == name ) {
            consoleMessage( "Missing <logger> parameter." );
            return syntaxError();
        }
        
        do {
            Logger jxtaLogger = Logger.getLogger( name );
            
            if( null == jxtaLogger ) {
                consoleMessage( "Invalid logger name : " + name );
                return ShellApp.appMiscError;
            }
            
            Level currentLevel = jxtaLogger.getEffectiveLevel();
            
            print( currentLevel.toString() );
                        
            if( null != level ) {
                jxtaLogger.setLevel( level );
                
                print( "->" + level );
            } 
            
            println( " : " + name );
            
            name = options.getNextParameter();
        } while( null != name );
        
        return ShellApp.appNoError;
    }
    
    private int syntaxError() {
        consoleMessage( "usage : log4j [-f | -e | -w | -i | -d | -t] <logger> ... " );
        return ShellApp.appParamError;
    }
    
    /**
     *  {@inheritDoc}
     **/
    public String getDescription() {
        return "Display and optionally adjust log4j levels";
    }
    
    /**
     *  {@inheritDoc}
     **/
    public void help() {
        println("NAME");
        println("     log4j - " + getDescription() );
        println(" ");
        println("SYNOPSIS");
        println("    log4j [-f | -e | -w | -i | -d | -t] <logger> ... ");
        println(" ");
        println("DESCRIPTION");
        println(" ");
        println("Use 'log4j' to adjust log4j levels.");
        println(" ");
        println("OPTIONS");
        println("    -f           Fatal logging level.");
        println("    -e           Error logging level.");
        println("    -w           Warn logging level.");
        println("    -i           Info logging level.");
        println("    -d           Debug logging level.");
        println("    -t           Trace logging level.");
        println(" ");
        println("PARAMETERS");
        println("    <env>    One or more logger names.");
        println(" ");
        println("EXAMPLE");
        println(" ");
        println("    JXTA>log4j -d net.jxta.endpoint net.jxta.impl.resolver ");
        println("    INFO->DEBUG : net.jxta.endpoint " );
        println("    WARN->DEBUG : net.jxta.impl.resolver ");
        println(" ");
        println("    Set the packages 'net.jxta.endpoint' and " );
        println("    'net.jxta.impl.resolver' to debug lgging level.");
        println(" ");
    }
}