A rails log silencer for specific calls / actions

application.rb

# config/application.rb
require File.dirname(__FILE__) + '/../lib/custom_logger.rb'

module MyApp
  class Application < Rails::Application
    # Middlewares
    config.middleware.swap Rails::Rack::Logger, CustomLogger, :silenced => ["/noisy/action.json"]
  end
end

custom_logger.rb

# lib/custom_logger.rb
class CustomLogger < Rails::Rack::Logger
  def initialize(app, opts = {})
    @app = app
    @opts = opts
    @opts[:silenced] ||= []
  end
  
  def call(env)
    if env['X-SILENCE-LOGGER'] || @opts[:silenced].include?(env['PATH_INFO'])
      Rails.logger.silence do
        @app.call(env)
      end
    else
      super(env)
    end
  end
end