EventLog.java

package jelectrum;

import java.io.PrintStream;
import java.io.FileOutputStream;
import java.io.OutputStream;

import java.text.SimpleDateFormat;


public class EventLog
{   
    private boolean log_enabled=false;
    private PrintStream log_stream = null;
    private SimpleDateFormat sdf;

    public EventLog(Config conf)
        throws java.io.IOException
    {   
        conf.require("event_log_enabled");

        log_enabled = conf.getBoolean("event_log_enabled");

        if (log_enabled)
        {
            conf.require("event_log_path");
            log_stream = new PrintStream(new FileOutputStream(conf.get("event_log_path"), true));

        }
            sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");

    }
    public EventLog(OutputStream out)
    {
      log_stream = new PrintStream(out);
      log_enabled=true;
      sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");

    }
    public void log(Throwable e)
    {
        log(e.toString());

    }

    public void log(String msg)
    {
        if (!log_enabled) return;

        synchronized(log_stream)
        {
            String line = sdf.format(new java.util.Date()) + " - " + msg;
            log_stream.println(line);
            log_stream.flush();
        }
        

    }
    public void alarm(Throwable e)
    {
      alarm(e.toString());
    }
    public void alarm(String msg)
    {
      
      log(msg);
      String line = sdf.format(new java.util.Date()) + " - " + msg;
      System.out.println(line);

    }

}