[kris]

Beta 7 will include a new mango.log package that implements a subset of the popular Log4J facilities, including:

A hierarchical set of named loggers, with inherited attributes
Independent levels of activity for each logger
A few common Appender classes
Some preliminary Layouts (formatters)

This particular clone has even less overhead than others, because it propogates the hierarchy downward (from ancestor to child) for time-sensitive attributes.

- Kris

[kris]

For those not familiar with Log4J, you might check out the documentation over here: http://logging.apache.org/log4j/docs/documentation.html

- Kris

[kris]

Mango.log seems to work quite well, although it's truly lightweight compared to the full Log4J. Here's the limitations:

PropertyConfigurator parses a much simplified version of the property file. Mango.log only supports the settings of Logger levels at this time; setup of Appenders and Layouts are currently done "in the code", though this is not a great hardship.

PatternLayout does not exist in mango.log, since it's the perhaps the largest component of all. I'm somewhat of the opinion that it's actually just as easy for a programmer to cut & paste one of the other Layouts, such as DateLayout, and simply change the snprintf() format (or do whatever else they like). It's certainly a lot more efficient at runtime.

The NDC stuff is not currently implemented.

Have yet to implement an XMLAppender (for Chainsaw support).

Other than that it has pretty much the same functionality as Log4J, including multiple appenders per node etc. Mango.log has a dependency upon mango.io for file access (PropertyConfigurator, FileAppender) and for one of the console appenders (StdioAppender). Other than that it's completely standalone, and it would be simple to replace/augment those appenders with alternatives.

- Kris

[kris]

Mango.log now has an uber cool html administration console, allowing you to dynamically review and adjust the log/debug settings within your live application.

The console make use of the mango.servlet package, and can non-intrusively hook into any application using mango.log (server or otherwise).

I take my hat off to stonecobra for this sweet piece of work ...

[kris]

Mango.log now hooks into Chainsaw (hooks are in svn, but slated for beta-8 zipfile)

Chainsaw is a Java-based, remote logging monitor. It's written by the Log4J community, and has some really nice features. Still in alpha right now, so it has a couple of bugs. However, it will work just fine for most applications using mango.log

I can provide installation details for those who need it.

- Kris