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different log4j file for multiple threads

Posted on 2008-09-30
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Last Modified: 2012-05-05
I need to create a different log4j file for each thread in a process. I want to read the configuration from one file and than change just the file name for each thread.

E.g. Process A  reads loads log4j properties file, the logfile name is processA.log

Process A now spawns 3 new threads, I want each thread to keep the same log4j confiiguation  (i.e. log level, file size etc.) and just change the names to processA_thread1.log, processA_thread2.log et.c

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Question by:sshah_tea
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muktajindal earned 2000 total points
ID: 22612927
You may have your threads as per attached code snippet.

class MyThread extends Thread {
	public MyThread(String name) {
		this.setName(name);
	}
	public synchronized void run() {
		
		Properties props = new Properties();
		props.setProperty("log4j.logger.com.myapp", "INFO, myapp");
		props.setProperty("log4j.appender.myapp", "org.apache.log4j.RollingFileAppender");
		props.setProperty("log4j.appender.myapp.File", "C:/Process_"+getName()+".log");
		props.setProperty("log4j.appender.myapp.layout", "org.apache.log4j.PatternLayout");
		props.setProperty("log4j.appender.myapp.MaxFileSize", "500KB");
		props.setProperty("log4j.appender.myapp.layout.ConversionPattern", "%d{MM-dd@HH:mm:ss} %-5p (%13F:%L) %3x - %m%n");
		props.setProperty("log4j.appender.myapp.Threshold", "INFO");
 
		PropertyConfigurator.configure(props);
		
		Logger logger = Logger.getLogger(getClass());
		System.out.println("Logging for " + getName());
		logger.info("Testing " + getName());		
	}
}

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Author Closing Comment

by:sshah_tea
ID: 31501703
perfect!! it worked!!

thanks
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