Fourtrack
A gem for massive, parallel recording of streaming event logs for later replay. You know when you need one.
Usage
To record all of your SQL:
recorder = Fourtrack::Recorder.new(output_path: Rails.root.join('log/sql.jsonlines.gz'), flush_after: 1024)
ActiveSupport::Notifications.subscribe('sql.active_record') do |_, started, finished, id, payload|
recorder << JSON.dump(payload)
end
and to replay later:
File.open(Rails.root.join('log/sql.jsonlines.gz')) do |f|
player = Fourtrack::Player.new(f)
player.each_line do |line|
puts JSON.load(line)
end
end
Installation
Add this line to your application's Gemfile:
gem 'fourtrack'
And then execute:
$ bundle
Or install it yourself as:
$ gem install fourtrack
Development
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/WeTransfer/fourtrack.
License
The gem is available as open source under the terms of the MIT License.