Go: Building Web Applications

Using the log4go package for robust logging

As with most things in Go, where there's something satisfactory and extensible in the core page, it can be taken to the next level by a third party—Go's wonderful logging package is truly brought to life with log4go.

Using log4go greatly simplifies the process of file logging, console logging, and logging via TCP/UDP.

Tip

For more information on log4go, visit https://code.google.com/p/log4go/.

Each instance of a log4go Logger interface can be configured by an XML configuration file and can have filters applied to it to dictate where messaging goes. Let's look at a simple HTTP server to show how we can direct specific logs to location, as shown in the following code:

package main import ( "code.google.com/p/log4go" ...