module Rails module Rack class Logger EnvironmentLog = "#{File.expand_path(Rails.root)}/log/#{Rails.env}.log" def initialize(app, log = nil) @app = app @path = Pathname.new(log || EnvironmentLog).cleanpath @cursor = ::File.size(@path) @last_checked = Time.now end def call(env) response = @app.call(env) ::File.open(@path, 'r') do |f| f.seek @cursor if f.mtime > @last_checked contents = f.read @last_checked = f.mtime @cursor += contents.length print contents end end response end end end end