vendor/rails/actionpack/lib/action_controller/vendor/rack-1.0/rack/commonlogger.rb

   1 module Rack
   2   # Rack::CommonLogger forwards every request to an +app+ given, and
   3   # logs a line in the Apache common log format to the +logger+, or
   4   # rack.errors by default.
   5
   6   class CommonLogger
   7     def initialize(app, logger=nil)
   8       @app = app
   9       @logger = logger
  10     end
  11
  12     def call(env)
  13       dup._call(env)
  14     end
  15
  16     def _call(env)
  17       @env = env
  18       @logger ||= self
  19       @time = Time.now
  20       @status, @header, @body = @app.call(env)
  21       [@status, @header, self]
  22     end
  23
  24     def close
  25       @body.close if @body.respond_to? :close
  26     end
  27
  28     # By default, log to rack.errors.
  29     def <<(str)
  30       @env["rack.errors"].write(str)
  31       @env["rack.errors"].flush
  32     end
  33
  34     def each
  35       length = 0
  36       @body.each { |part|
  37         length += part.size
  38         yield part
  39       }
  40
  41       @now = Time.now
  42
  43       # Common Log Format: http://httpd.apache.org/docs/1.3/logs.html#common
  44       # lilith.local - - [07/Aug/2006 23:58:02] "GET / HTTP/1.1" 500 -
  45       #             %{%s - %s [%s] "%s %s%s %s" %d %s\n} %
  46       @logger << %{%s - %s [%s] "%s %s%s %s" %d %s %0.4f\n} %
  47         [
  48          @env['HTTP_X_FORWARDED_FOR'] || @env["REMOTE_ADDR"] || "-",
  49          @env["REMOTE_USER"] || "-",
  50          @now.strftime("%d/%b/%Y %H:%M:%S"),
  51          @env["REQUEST_METHOD"],
  52          @env["PATH_INFO"],
  53          @env["QUERY_STRING"].empty? ? "" : "?"+@env["QUERY_STRING"],
  54          @env["HTTP_VERSION"],
  55          @status.to_s[0..3],
  56          (length.zero? ? "-" : length.to_s),
  57          @now - @time
  58         ]
  59     end
  60   end
  61 end