Hi
I think that it can be done by having your own Appender class
something like
import org.apache.log4j.RollingFileAppender;
import org.apache.log4j.FileAppender;
import org.apache.log4j.Layout;
import java.io.IOException;
import java.io.Writer;
import java.io.File;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Calendar;
import org.apache.log4j.helpers.OptionConverter;
import org.apache.log4j.helpers.QuietWriter;
import org.apache.log4j.helpers.LogLog;
import org.apache.log4j.helpers.CountingQuietWriter;
import org.apache.log4j.spi.LoggingEvent;
public class DateTimeFileAppender extends FileAppender {
static final public String LOG_DATE_FORMAT = "LogDateFormat";
static final public String LOG_FILE_FREQUENCY = "LogFileFrequency";
protected String logDateFormat = "yyyyMMdd_HHmmss" ;
protected long logFileFreq = 2*60*60 ;
public void setLogDateFormat(String logDateFormatStr){
logDateFormat = logDateFormatStr;
}
public void setLogFileFrequency(String logFileFrequencyStr){
logFileFrequency = logFileFrequencyStr;
}
public void makeBackFileWithTimeStamp() {
File target, file;
SimpleDateFormat theFormatter = new SimpleDateFormat(logDateFormat);
Date theTime = Calendar.getInstance().getTime();
// Backup File name,
int hasDot = fileName.lastIndexOf(".") ;
int len = hasDot > 0 ? hasDot : fileName.length();
String newName = fileName.substring( 0, len ) + "_" +
theFormatter.format( theTime ) + ".log";
LogLog.debug("making back up of log with name:"+newName);
// make sure to close handle before renaming
this.closeFile();
File backLogFile = new File(newName);
File curLogFile = new File(fileName);
curLogFile.renameTo(backLogFile);
try {
// This will also close the file. This is OK since multiple
// close operations are safe.
this.setFile(fileName, false);
}
catch(IOException e) {
LogLog.error("setFile("+fileName+", false) call failed.", e);
}
}
..
...
other methods
...
protected void subAppend(LoggingEvent event) {
super.subAppend(event);
if((fileName != null) &&
// check time elapsed
timeElapsed >= logFileFrequency)
this.makeBackFileWithTimeStamp();
}
}
I hope that it works for you
Please tell me if I am wrong
-Kapil
-----Original Message-----
From: Ceki Gülcü [mailto:[EMAIL PROTECTED]]
Sent: 05 January 2002 15:37
To: Log4J Users List
Subject: Re: Logging to multiple files?
I am afraid this requirement never came up previously. Would you care to
expand on the requirement?
Regards, Ceki
At 10:36 05.01.2002 +0100, you wrote:
>Hi,
>I need to log to files based on current date, but in case where program
>restarts it must create a new file based on current time, for example:
>
>1st start:
>2002-01-01_00-00.log
>2002-01-02_00-00.log
>
>stop, 2nd start:
>2002-01-02_16-43.log
>2002-01-03_00-00.log
>2002-01-04_00-00.log
>
>Is it possible with out-of-box Log4j?
>
>Tkanks in advance, greetings,
> deacon Marcus
>
>
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--
Ceki Gülcü - http://qos.ch
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