Loggable

Loggable is a gem that’s designed to add a logging interface to classes that don’t automatically support it.

Installation

Stable:

sudo gem install loggable

Bleeding Edge (hardly):

sudo gem install vigetlabs-loggable --source=http://gems.github.com

Usage

Using the Gem is easy, just assign a new logger to your class:

require 'rubygems'
require 'logger'
require 'loggable'

class MyClass; end

MyClass.logger = Logger.new('debug.log')

Now, any class or instance methods have access to the logger:

class MyClass
  def self.do_something
    logger.debug 'doing something in the class'
  end

  def do_something
    logger.debug 'doing something in an instance'
  end
end

The above code will write into the log file when called:

MyClass.do_something
MyClass.new.do_something

debug.log:

D, [2008-04-24T20:37:32.273930 #25821] DEBUG -- : doing something in the class
D, [2008-04-24T20:37:32.274062 #25821] DEBUG -- : doing something in an instance

Removing Logger Functionality

Calling the logger= class method to assign a logger to the class will trigger the methods necessary to start logging messages. If you want to turn off logging temporarily (without removing the logging statements from your class), comment out the line where you assign the new logger. By default, the logger is stubbed out, so any calls to methods on it will just return nil.

Credits

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.