Memolog

Memolog is an in-memory logger, which extend any other logger. Designed to work with Sentry but it's not necessary.

Add this line to your application's Gemfile:

gem "memolog"

And then execute:

$ bundle install

Or install it yourself as:

$ gem install memolog

Use this example during application initialization process (this example implement default values):

Memolog.configure do |config|
  config.debug = false
  config.formatter = Logger::Formatter.new
  config.middlewares = %i[rails sidekiq]
  config.log_size_limit = 50_000
end

Memolog.init_middlewares!

Available options are:

• debug - set it to true if you need to leave Memolog.dump result outside Memolog.run {} block.
• formatter - setup your own formatter.
• middlewares - define here what you want to initialize in #init_middlewares! call.
• log_size_limit - max log length in #dump.

Please call Memolog.extend_logger(Rails.logger) or any other logger you want to collect. After that when error occured you can call Memolog.dump in your code and get log from Rails.logger so you can collect it to another place (Sentry or etc). Also there will be unique identifier to find logs behaviour on your server or log collection system.

Memolog has init code for Rails (Middleware) and Sidekiq (Middleware). It implement all hacks on the Memolog.init! call. Also you can add Memolog.run {} around logs you want to collect and release it with Memolog.dump inside this block.

Bug reports and pull requests are welcome on GitHub at https://github.com/skirushkin/memolog.

The gem is available as open source under the terms of the MIT License.