LogContext.java

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/*
 * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
 * Copyright (C) 2012 - Javolution (http://javolution.org/)
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software is
 * freely granted, provided that this notice is preserved.
 */
package javolution.context;
 
import javolution.lang.Configurable;
import javolution.osgi.internal.OSGiServices;
import javolution.text.TextContext;
 
public abstract class LogContext extends AbstractContext {
 
    public enum Level {
 
        DEBUG, INFO, WARNING, ERROR, FATAL
 
    }
 
    public static final Configurable<Level> LEVEL = new Configurable<Level>() {
        @Override
        protected Level getDefault() {
            return Level.DEBUG;
        }
        @Override
        public Level parse(String str) {
            return Level.valueOf(str);
        }
    };
 
    public static void debug(Object... message) {
        currentLogContext().log(Level.DEBUG, message);
    }
 
    public static LogContext enter() {
        return (LogContext) currentLogContext().enterInner();
    }
 
    public static void error(Object... message) {
        currentLogContext().log(Level.ERROR, message);
    }
 
    public static void info(Object... message) {
        currentLogContext().log(Level.INFO, message);
    }
 
    public static void warning(Object... message) {
        currentLogContext().log(Level.WARNING, message);
    }
 
    private static LogContext currentLogContext() {
        LogContext ctx = current(LogContext.class);
        if (ctx != null)
            return ctx;
        return OSGiServices.getLogContext();
    }
 
    protected LogContext() {}
 
    public abstract void prefix(Object... prefixes);
 
    public abstract void setLevel(Level level);
 
    public abstract void suffix(Object... suffixes);
 
    protected abstract void log(Level level, Object... message);
 
}