add logger

.gitignore

@@ -0,0 +1 @@
+log/*.log

config.ru

@@ -1,7 +1,10 @@
 require 'sinatra'
+require 'logger'
 
 set :env, :production
 
+$logger = Logger.new 'log/visit.log'
+
 if defined?(run) 
   disable :run
   require './fdlint-host'

fdlint-host.rb

@@ -4,10 +4,12 @@
 require 'haml'
 require 'base64'
 require 'json'
+require 'logger'
 require_relative 'lib/fdlint/lib/runner'
 require_relative 'app/helper/readstr'
 
 $runner = XRay::Runner.new
+$logger ||= Logger.new(STDOUT)
 
 configure do 
   set :views, File.dirname(__FILE__) << '/app/view'
@@ -39,6 +41,9 @@ def css(path)
   end
   text, encoding = readstr(bin)
 
+  $logger.info "receive post #{params}"
+  t = Time.now
+
   if name
     result = $runner.send("check", text, name)
   else
@@ -47,6 +52,9 @@ def css(path)
 
   @result = format_result name, text, result
 
+  t = (Time.now - t)*1000
+  $logger.info "time elapsed: %d ms" % t
+
   if params['format'] == 'html'
     @src = text
     haml :home