MongoidAppender

MongoidAppender is a simple implementation of a standard Logging::Appender for Tim Pease's Logging framework using Mongoid, useful for writing log messages into MongoDB. MongoidAppender has been tested with both Mongoid 3.x and 4.0.

Add this line to your application's Gemfile:

gem 'mongoid_appender'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mongoid_appender

Configure MongoidAppender as you would a normal Logging::Appender. For example, to configure your root logger to output all messages to stdout but only write :warn messages and above to MongoDB, you can use the following code:

require 'logging'
require 'mongoid'

# Some code to set up Mongoid here...

Logging.logger.root.add_appenders(
    Logging.appenders.stdout,
	MongoidAppender.new('mongoid', :level => :warn)
)

By default, MongoidAppender will write log documents into a MongoDB collection named logs. Every document has the following fields:

• level - The event level (debug, info, warn, error, etc.)
• logger - The name of the logger
• message - The log message
• exception - The log exception (if any)
• backtrace - The log backtrace (if any)

Simple!