gitlab-org--gitlab-foss/config/initializers/lograge.rb

# Only use Lograge for Rails
unless Sidekiq.server?
  filename = File.join(Rails.root, 'log', "#{Rails.env}_json.log")

  Rails.application.configure do
    config.lograge.enabled = true
    # Store the lograge JSON files in a separate file
    config.lograge.keep_original_rails_log = true
    # Don't use the Logstash formatter since this requires logstash-event, an
    # unmaintained gem that monkey patches `Time`
    config.lograge.formatter = Lograge::Formatters::Json.new
    config.lograge.logger = ActiveSupport::Logger.new(filename)
    # Add request parameters to log output
    config.lograge.custom_options = lambda do |event|
      {
        time: event.time.utc.iso8601(3),
        params: event.payload[:params].except(*%w(controller action format)),
        remote_ip: event.payload[:remote_ip],
        user_id: event.payload[:user_id],
        username: event.payload[:username]
      }
    end
  end
end