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expanded example to include loading appender programmatically

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This commit is contained in:
Gareth Jones 2012-06-29 09:19:20 +10:00
parent 8f9b4444f6
commit 68b47dd51c
1 changed files with 21 additions and 2 deletions
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23
example.js
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@ -13,13 +13,27 @@ log4js.configure({
], ],
replaceConsole: true replaceConsole: true
}); });
//log4js.addAppender(log4js.fileAppender('cheese.log'), 'cheese', 'console');
//to add an appender programmatically, and without clearing other appenders
//loadAppender is only necessary if you haven't already configured an appender of this type
log4js.loadAppender('file');
log4js.addAppender(log4js.appenders.file('pants.log'), 'pants');
//a custom logger outside of the log4js/lib/appenders directory can be accessed like so
//log4js.loadAppender('what/you/would/put/in/require');
//log4js.addAppender(log4js.appenders['what/you/would/put/in/require'](args));
//or through configure as:
//log4js.configure({
// appenders: [ { type: 'what/you/would/put/in/require', otherArgs: 'blah' } ]
//});
var logger = log4js.getLogger('cheese'); var logger = log4js.getLogger('cheese');
//only errors and above get logged. //only errors and above get logged.
//you can also set this log level in the config object
//via the levels field.
logger.setLevel('ERROR'); logger.setLevel('ERROR');
//console logging methds have been replaced with log4js ones. //console logging methods have been replaced with log4js ones.
//so this will get coloured output on console, and appear in cheese.log
console.error("AAArgh! Something went wrong", { some: "otherObject", useful_for: "debug purposes" }); console.error("AAArgh! Something went wrong", { some: "otherObject", useful_for: "debug purposes" });
//these will not appear (logging level beneath error) //these will not appear (logging level beneath error)
@ -35,5 +49,10 @@ logger.fatal('Cheese was breeding ground for listeria.');
var anotherLogger = log4js.getLogger('another'); var anotherLogger = log4js.getLogger('another');
anotherLogger.debug("Just checking"); anotherLogger.debug("Just checking");
//one for pants.log
//will also go to console, since that's configured for all categories
var pantsLog = log4js.getLogger('pants');
pantsLog.debug("Something for pants");