[logback-user] Programmmatically creatinglogger/appender/pattern

[Ceki Gulcu]

You need to invoke the start() method on most if not all logback components for 
them to function property.

Lance White wrote:
> OK, I still can't get this working, and having looked at the junit src, they're all individual tests and I couldn't find any integrated tests in there.
> 
> This is the simple test I'm trying to use. If I use the LoggerContext from the ILoggerFactory, then I get a log message to the console (using the standard stuff I presume) and no file is created. If I create the LoggerContext then no output is produced anywhere.
> 
> Java is 1.5.0_16.
> 
> Cheers
> 
> Lance
> 
> (p.s. I've got this working with log4j, but I'm trying to upgrade)
> 
> ---------------------------------------------------------------------------------
> 
> import org.slf4j.LoggerFactory;
> 
> import ch.qos.logback.classic.Logger;
> import ch.qos.logback.classic.LoggerContext;
> import ch.qos.logback.classic.PatternLayout;
> import ch.qos.logback.classic.spi.LoggingEvent;
> import ch.qos.logback.core.rolling.FixedWindowRollingPolicy;
> import ch.qos.logback.core.rolling.RollingFileAppender;
> import ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy;
> 
> public class Test2
> {
> 	public Test2() { }
> 	
> 	public void run(String name) {
> 		LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
> //		LoggerContext lc = new LoggerContext();
> 		Logger logger = lc.getLogger(name);
> 		
> 		PatternLayout layout = new PatternLayout();
> 		layout.setPattern("%d:%msg%n");
> 
> 		RollingFileAppender<LoggingEvent> rfa = new RollingFileAppender<LoggingEvent>();
> 		rfa.setContext(lc);
> 		rfa.setName(name + "_Appender");
> 		rfa.setLayout(layout);
> 		rfa.setFile("c:\\" + name + ".log");
> 
> 		SizeBasedTriggeringPolicy<LoggingEvent> triggeringPolicy = new SizeBasedTriggeringPolicy<LoggingEvent>();
> 		triggeringPolicy.setContext(lc);
> 		triggeringPolicy.setMaxFileSize(String.valueOf(50000));
> 		triggeringPolicy.start();
> 		rfa.setTriggeringPolicy(triggeringPolicy);
> 
> 		FixedWindowRollingPolicy rollingPolicy = new FixedWindowRollingPolicy();
> 		rollingPolicy.setContext(lc);
> 		rollingPolicy.setFileNamePattern("c:\\" + name + "-%i.log");
> 		rollingPolicy.setMinIndex(1);
> 		rollingPolicy.setMaxIndex(10);
> 		rollingPolicy.setParent(rfa);
> 		rollingPolicy.start();
> 		rfa.setRollingPolicy(rollingPolicy);
> 
> 	
> 		logger.info("hello");
> 	}
> 	
> 	
> 	public static void main(String[] args)
> 	{
> 		Test2 t = new Test2();
> 		t.run("fred");
> 	}
> }
> ---------------------------------------------------------------------------------
> 
> -----Original Message-----
> From: logback-user-bounces at qos.ch [mailto:logback-user-bounces at qos.ch] On Behalf Of Lance White
> Sent: 25 March 2009 16:09
> To: logback users list
> Subject: Re: [logback-user] Programmmatically creatinglogger/appender/pattern
> 
> Cheers Ceki, I'll go through those.
> 
> Lance
> 
> -----Original Message-----
> From: logback-user-bounces at qos.ch [mailto:logback-user-bounces at qos.ch] On Behalf Of Ceki Gulcu
> Sent: 25 March 2009 16:02
> To: logback users list
> Subject: Re: [logback-user] Programmmatically creatinglogger/appender/pattern
> 
> Hello Lance,
> 
> Look into the junit test cases which do that type of operation all the time. For 
> example, see:
> 
> http://logback.qos.ch/xref-test/ch/qos/logback/classic/html/HTMLLayoutTest.html
> http://logback.qos.ch/xref-test/ch/qos/logback/core/rolling/SizeBasedRollingTest.html
> 
> If that does not help, post your code here.
> 
> Lance White wrote:
>> Has anyone got any examples on how to programmatically create a logger /
>> appender / pattern et. al in-line in code?
>>
>> I can't for the life of me get this running. Currently I've got the
>> appender  (file appender in this case) creating the output files, but
>> all I get in them is stuff like:
>>
>>  %PARSER_ERROR_d:MODULE:%PARSER_ERROR_msg%
>>
>> Which looks like the pattern stuff isn't started up properly.
>>
>> Cheers
>>
>> Lance
> 

-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch