/*
* jPOS Project [http://jpos.org]
* Copyright (C) 2000-2014 Alejandro P. Revilla
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jpos.util;
import org.jpos.core.Configurable;
import org.jpos.core.Configuration;
import org.jpos.core.ConfigurationException;
import java.io.PrintStream;
import java.util.Date;
import java.util.Hashtable;
/**
* A specific log listener that filters logs based on
* their priorities,
* priorities are ordered as follows: TRACE < DEBUG < INFO < WARN < ERROR < FATAL
* default priority is Log.INFO
* @author <a href="mailto:taherkordy@dpi2.dpi.net.ir">Alireza Taherkordi</a>
* @version $Revision$ $Date$
*/
@SuppressWarnings("unchecked")
public class FilterLogListener implements LogListener,Configurable
{
private static Hashtable levels;
static{
levels = new Hashtable(6);
levels.put(Log.TRACE, 1);
levels.put(Log.DEBUG, 2);
levels.put(Log.INFO, 3);
levels.put(Log.WARN, 4);
levels.put(Log.ERROR, 5);
levels.put(Log.FATAL, 6);
}
private String priority = Log.INFO;
PrintStream p;
public FilterLogListener() {
super();
p = System.out;
}
public FilterLogListener(PrintStream p) {
super();
setPrintStream(p);
}
public void setConfiguration (Configuration cfg)
throws ConfigurationException
{
try {
String log_priority = cfg.get("priority");
if ( (log_priority != null) && (!log_priority.trim().equals("")) && levels.containsKey(log_priority) ) {
priority = log_priority;
}
} catch (Exception e) {
throw new ConfigurationException (e);
}
}
public synchronized void setPrintStream(PrintStream p) {
this.p = p;
}
public synchronized void close() {
if (p != null) {
p.close();
p = null;
}
}
public String getPriority() {
return priority;
}
public void setPriority(String priority) {
this.priority = priority;
}
public boolean permitLogging(String tagLevel)
{
Integer I = (Integer)levels.get(tagLevel);
if (I == null)
I = (Integer)levels.get(Log.INFO);
Integer J = (Integer)levels.get(priority);
return (I >= J);
}
public synchronized LogEvent log(LogEvent ev) {
if (p != null && permitLogging(ev.getTag())) {
Date d = new Date();
p.println(
"<log realm=\"" + ev.getRealm() + "\" at=\"" + d.toString()
+ "." + d.getTime() % 1000 + "\">"
);
ev.dump(p, " ");
p.println("</log>");
p.flush();
}
return ev;
}
}