module Rack # Rack::CommonLogger forwards every request to an +app+ given, and # logs a line in the Apache common log format to the +logger+, or # rack.errors by default. class CommonLogger def initialize(app, logger=nil) @app = app @logger = logger end def call(env) dup._call(env) end def _call(env) @env = env @logger ||= self @time = Time.now @status, @header, @body = @app.call(env) [@status, @header, self] end def close @body.close if @body.respond_to? :close end # By default, log to rack.errors. def <<(str) @env["rack.errors"].write(str) @env["rack.errors"].flush end def each length = 0 @body.each { |part| length += part.size yield part } @now = Time.now # Common Log Format: http://httpd.apache.org/docs/1.3/logs.html#common # lilith.local - - [07/Aug/2006 23:58:02] "GET / HTTP/1.1" 500 - # %{%s - %s [%s] "%s %s%s %s" %d %s\n} % @logger << %{%s - %s [%s] "%s %s%s %s" %d %s %0.4f\n} % [ @env['HTTP_X_FORWARDED_FOR'] || @env["REMOTE_ADDR"] || "-", @env["REMOTE_USER"] || "-", @now.strftime("%d/%b/%Y %H:%M:%S"), @env["REQUEST_METHOD"], @env["PATH_INFO"], @env["QUERY_STRING"].empty? ? "" : "?"+@env["QUERY_STRING"], @env["HTTP_VERSION"], @status.to_s[0..3], (length.zero? ? "-" : length.to_s), @now - @time ] end end end